Airtac SI series: cylinder, supplied as SAI - SI32BX187TCTCM1NG

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Description

Specifications: SI32BX187TCTCM1NG — SI series order for a double-acting single-rod cylinder, supplied as SAI; 32 mm bore × 187 mm stroke; SUS304 rod (B); non-magnetic piston; TC trunnion + TCM1 support (store set); NBR seals (N); G1/8 ports (G).

SI is discontinued. When you order this SI model, we supply the corresponding SAI replacement.

The Airtac SI series has been updated to the Airtac SAI series.

Product Catalog

Supplied SAI — dimensions and accessories.

Download Airtac Product Catalog (PDF)

For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

Historical SI Catalog

Download Airtac Product Catalog (PDF)

Specifications, dimensions and options below describe supplied SAI. The SI catalog is historical. Original listing service references require revision checks. Check mounting dimensions and accessory codes: matching suffixes do not prove interchangeability.

SI to SAI replacement guide

Model Code Explained

Code Meaning
SI Historical SI order identity; confirmed supply is SAI
32 32 mm bore
B SUS304 stainless steel
X Separator before stroke
187 187 mm stroke
No magnet suffix Without built-in magnet
TCTCM1 TC trunnion with TCM1 support
N NBR seal option
G G1/8 working ports

TCTCM1 is the seller's package of F-SAI32TC trunnion and F-SI32TCM1 support, not a printed Airtac complete-cylinder code. Confirm bracket, support and fastener quantities.

Supplied SAI Specifications

Parameter Value
Model SI32BX187TCTCM1NG
Action Double acting, single rod
Bore 32 mm
Stroke 187 mm; Special stroke; confirm order and delivery conditions
Piston rod material SUS304 stainless steel
Magnetic piston Without magnet
Mounting selection TC trunnion with TCM1 support
Seal option NBR
Working ports G1/8; two working air ports
Working medium Air filtered to 40 µm or finer
Operating pressure 0.15–1 MPa (1.5–10 bar; approximately 22–145 psi)
Proof pressure 1.5 MPa (15 bar); not continuous operating pressure
Temperature -20 to 70 °C; apply the complete system limits
Piston speed 30–800 mm/s
Stroke tolerance +1 / -0 mm
Cushioning Adjustable pneumatic cushion; 27 mm nominal cushion reference
Rod diameter / end thread 12 mm / M10×1.25
Cylinder reference weight 964.78 g; catalog calculation, not measured shipping weight

Reference weight = 489.8 + 2.54 × 187 g, decimal grams, from the matching non-magnetic SAI single-rod base. A/B rod and H/N seal mass differences are unquantified: not certified variant mass. Excludes brackets, rod joints, sensors and packaging; actual weight prevails.

The 27 mm nominal cushion distance does not guarantee usable deceleration length for shorter strokes. Verify actual load/speed performance.

Features and Operation

ISO15552 standard cylinder, formerly ISO6431.

Compact special-shaped bidirectional piston sealing structure with oil storage.

Corrosion-resistant profiled aluminium tube; no tie rods; external sensor grooves.

Stable adjustable pneumatic cushioning.

Multiple cylinder variants and mounting accessories available.

External and Mounting Dimensions

A+stroke ends at rear-cover face; overall formulas add rear boss NA once. Bare body excludes accessories, sensors, joints and packaging. Magnetic/nonmagnetic dimensions match. Drawing-specific symbols are not extra overall dimensions. Numbers are mm; threads are explicit. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

Basic dimension / drawing symbol Dimension (mm) / thread
Illustrated A + stroke to rear-cover face 329 mm = 142 + 187
Body face span: AC + stroke 281 mm = 94 + 187
Derived bare retracted length: A + stroke + NA 332 mm = 142 + 187 + 3
Derived bare extended length: A + 2 × stroke + NA 519 mm = 142 + 2 × 187 + 3
Body cross-section 47 × 47 mm
Base drawing symbols A=142 mm before adding the actual stroke;AB=48;AC=94 mm before adding the actual stroke;AD=27.5;AE=27.5;B=47;D=12;DA=29;E=M10×1.25;EA=22;F=17;FA=6;M=30;MA=19;H=10;K=M6;KA=16;KB=32.5;N=30;NA=3;P=G1/8;PA=13;PB=5.5

Selected Mounting Dimensions

Accessory / drawing symbols Dimension (mm) / thread
TC — Intermediate trunnion mounting; F-SAI32TC A + stroke=329 = 142 + 187;C + stroke=281 = 94 + 187;D=12;F=68.5;G=52;H=76;J=31;S=47;X=3;T=32.5
TCM1 — Trunnion support type 1; F-SI32TCM1 A + stroke=329 = 142 + 187;C + stroke=281 = 94 + 187;AA=31;B=72.5;CA=40;D=11;E=9;F=60;G=80;H=65;I=12;J=5;K=52;L=64;M=79;N=12
Illustrated adjustable support center 140.5 mm = (94 + 187) / 2

Mounting and Rod-End Accessories

Mounting option Part code and material
LB — Axial foot mounting F-SI32LB; Low-carbon steel
FA — Front flange mounting F-SI32FA; Aluminium alloy
CA — Single rear clevis F-SE32CA; Ductile cast iron
CB — Double rear clevis F-SE32CB; Ductile cast iron
CR — Single clevis connection F-SI32CR; Ductile cast iron
TC — Intermediate trunnion mounting F-SAI32TC; Ductile cast iron
FTC — Front-cover trunnion mounting F-SI32FTC; Ductile cast iron
TCM1 — Trunnion support type 1 F-SI32TCM1; Ductile cast iron
TCM2 — Trunnion support type 2 F-SI32TCM2; Aluminium alloy
FB — Rear flange mounting F-SI32FA; Aluminium alloy

FA/FB share a flange plate at different positions. CR requires CB. TC/FTC need the listed TCM1/TCM2: support size numbers may differ from bore. Confirm package and fasteners.

TC is adjustable and separately orderable for this bore. Drawing-reference support centers: position for actual load.

TC locking torque: 2–3 N·m; static holding-force reference: 800 N, not cylinder thrust or payload. Above this, specify factory nonstandard fixed TC. Place bracket on barrel ledges and position it. Pre-tighten; check bracket and barrel sloping faces contact. 32/40: tighten 8 black screws through pre-, intermediate and final tightening.

Drawing holes: LB 4 AP; FA/FB 4 BP; CR 4 K through-holes and 4 L counterbores; TCM1 4 E; TCM2 4 L through-holes and 4 K counterbores. CA DQ/CB CP tolerance: ±0.1 mm. Hole counts do not specify supplied fastener quantities.

Rod-End Joint Dimensions

Joint / drawing symbol Dimension (mm) / thread / angle
I joint — F-M10X125I NC=10;ND=40;NE=50;NF=15;NG=20;NH=M10×1.25;NM=10;Reference weight=75 g
Y clevis joint — F-M10X125Y A=52;B=40;C=20;D=19;F=18;E=M10×1.25;G=25;H=10;I=10;Reference weight=86 g
Floating joint — F-M10X125F MA=58;MB=22;MC=7;MD=21;ME=26;MF=11;MG=6;MH=10;MI_MJ=M10×1.25;MK=12°;Reference weight=107 g
Spherical rod-end joint — F-M10X125U PA=11;PB=26;PC=10;PD=20;PE=43;PF=56;PG=M10×1.25;PH=13°;PI=19;PJ=17;PK=14;Reference weight=69 g

M10×1.25 rod joints use the carbon-steel catalog category; subparts/finishes are unspecified. Select joints/guides for load. Joint mass is excluded from cylinder weight. Y drawing: no separate pin-kit code or guaranteed kit count.

Service References — Confirm Exact Revision

Parameter Value
TPU seal-set reference P-SAI32-R1
NBR seal-set reference P-SAI32N-R1
Fluororubber seal-set reference P-SAI32-R2
Magnet-ring reference GMED17X28.8X5
Guide-ring reference SAI32 grooved wear-resistant guide ring associated with the magnet ring
Front-cover reference SAI32 front cover
Rear-cover reference SAI32 rear cover

Confirm revision, dimensions, material and fit for these original service references; interchangeability is unverified. Cover names are not order codes; seal alternatives are not all fitted.

Non-magnetic cylinder: magnet/guide-ring references imply neither a fitted magnet nor approved magnetic conversion.

SAI-coded service references retained from the original listing are not confirmed here as compatible with historical SI cylinders.

Force and Application

Parameter Value
Extension effective area 804 mm²; catalog rounded single-rod area
Extension at 0.5 MPa 402 N theoretical
Retraction effective area 690 mm²; catalog rounded single-rod area
Retraction at 0.5 MPa 345 N theoretical

Theoretical axial force = effective area (mm²) × pressure (MPa), before friction/losses. Rod area reduces retraction area. Not safe working loads or guaranteed payloads.

Installation and Maintenance

Qualified personnel only. Before maintenance: secure loads, guard motion, isolate power/air and release residual pressure. Prevent unexpected restart motion; design for power/air loss.

Use clean, dry air filtered ≤40 µm; remove water, degraded oil and debris. Protect from dust, corrosion, coolant, weld spatter, vibration, heat and freezing; assess unusually dry air. Strong magnetic fields affect sensing.

Start unloaded; increase load gradually. Align rod/load; guide against side load, bending, impact and torque. Check long-stroke buckling, sag, support and air use. Rod joints do not replace guides.

Load-ratio guidance: ≤0.7 static/low speed; ≤0.5 at 50–500 mm/s; ≤0.3 above 500 mm/s. Not structural safety factors or payload guarantees; obey cylinder pressure/speed limits.

Fit flow controls at both ports; double action normally uses meter-out. Start closed; open gradually. Set cushions for load/speed without forcing screws. Heavy/fast loads may need an external absorber or deceleration circuit.

Compressibility/leakage defeat assumed precise prolonged closed-center stops or automatic multi-cylinder synchronization. Swing links need CA/CB/TC pivots, not rigid LB mounts forced through arcs. Match flange direction/support height to load.

Normally no added oil is needed. Once introduced, continuously use additive-free ISO-VG32 turbine oil. Oil-mist guide: ≤25 mg/m³; 0.5–5 drops per 1000 L. Size lubricator for flow; avoid excess/incompatible oil.

Clean pipes; keep sealant off leading threads. Start required tape 1.5–2 threads back. Verify tube pressure/temperature, OD/ID and bend radius. Hot spatter may require metal/flame-resistant tubing.

Protect sliding surfaces; periodically operate stored cylinders and prevent corrosion. Use the lowest cylinder/fitting/valve/tube/sensor/cable limit; temperature options do not raise other ratings.

Internal Components — SAI Catalog Reference

Item Material reference
1. Nut Carbon steel / stainless steel
2. Piston rod S45C hard-chrome-plated ground bar / stainless steel
3. Front-cover O-ring TPU
4. Front cover Aluminium alloy
5. Bushing Wear-resistant material
6. Cushion O-ring TPU
7. Barrel Aluminium alloy
8. Piston-rod O-ring NBR
9. Piston Aluminium alloy
10. Piston O-ring NBR
11. Wear ring Wear-resistant material
12. Magnet Not fitted in this non-magnetic cylinder. Catalog magnetic-version reference: Plastic type for bores100 and below; rubber type for other bores
13. Hexagon socket bolt Carbon steel
14. Cushion seal TPU
15. Rear cover Aluminium alloy
16. Support screw cap Carbon steel / stainless steel

SAI structure reference, not an option material certificate. Ordered rod/seal choices prevail: A/B is not an all-stainless cylinder; a seal option does not replace every elastomer.

Series Ordering Options

Parameter Value
Rod material choices Blank: Medium-carbon steel; A: SUS420J2 stainless steel; B: SUS304 stainless steel
Seal choices Blank: TPU; H: Fluororubber; N: NBR
Magnet choice Blank: no magnet; S: magnet fitted, sensors separately selected
Thread choices PT, G or NPT as specified by the actual order; do not mix thread standards
Catalog standard strokes 25, 50, 75, 80, 100, 125, 150, 160, 175, 200, 250, 300, 350, 400, 450, 500 mm
Maximum / allowable stroke 1000 / 1800 mm; separate catalog limits, not a list of all standard strokes
Stroke tolerance bands 0–250 mm: +1 / -0 mm; 251–1000 mm: +1.5 / -0 mm; 1001–1500 mm: +2 / -0 mm; above 1500 mm not specified

Series alternatives are not simultaneous features. Confirm special strokes/unlisted combinations. Retain the full model; separately select mounts, joints, sensors and circuit parts.

Magnetic Sensing

This model has no built-in magnet. DMSE and CMSE magnetic sensors are not applicable to this piston as ordered; adding a sensor does not add a magnet. A separately confirmed magnetic cylinder configuration is required for magnetic detection.

Connection and Tube-Side Options

Separately selected component Complete ordering codes; tube dimensions as labelled
GPC straight 6 mm OD: GPC601,GPC601D; 8 mm OD: GPC801,GPC801D; 10 mm OD: GPC1001,GPC1001D; 12 mm OD: GPC1201,GPC1201D
GPL elbow 6 mm OD: GPL601,GPL601D; 8 mm OD: GPL801,GPL801D; 10 mm OD: GPL1001,GPL1001D; 12 mm OD: GPL1201,GPL1201D
GPC miniature straight 4 mm OD: GPC401-M,GPC401D-M; 6 mm OD: GPC601-M,GPC601D-M
GPL miniature elbow 4 mm OD: GPL401-M,GPL401D-M; 6 mm OD: GPL601-M,GPL601D-M
GPLL extended elbow 4 mm OD: GPLL401,GPLL401D; 6 mm OD: GPLL601,GPLL601D; 8 mm OD: GPLL801,GPLL801D; 10 mm OD: GPLL1001,GPLL1001D
GPEB branch tee 4 mm OD: GPEB401,GPEB401D; 6 mm OD: GPEB601,GPEB601D; 8 mm OD: GPEB801,GPEB801D; 10 mm OD: GPEB1001,GPEB1001D
GPED run tee 4 mm OD: GPED401,GPED401D; 6 mm OD: GPED601,GPED601D; 8 mm OD: GPED801,GPED801D; 10 mm OD: GPED1001,GPED1001D
GPYB Y fitting 4 mm OD: GPYB401,GPYB401D; 6 mm OD: GPYB601,GPYB601D; 8 mm OD: GPYB801,GPYB801D; 10 mm OD: GPYB1001,GPYB1001D
GPH banjo elbow 4 mm OD: GPH401,GPH401D; 6 mm OD: GPH601,GPH601D; 8 mm OD: GPH801,GPH801D
GPHF female-branch banjo 4 mm OD: GPHF401,GPHF401D; 6 mm OD: GPHF601,GPHF601D; 8 mm OD: GPHF801,GPHF801D
GPHW twin banjo 4 mm OD: GPHW401,GPHW401D; 6 mm OD: GPHW601,GPHW601D; 8 mm OD: GPHW801,GPHW801D
GPZB cross fitting 6 mm OD: GPZB601,GPZB601D; 8 mm OD: GPZB801,GPZB801D
GPKD reducing distribution fitting main 6 / branch 4 mm OD: GPKD6-401,GPKD6-401D
GBPC metal straight 4 mm OD: GBPC401; 6 mm OD: GBPC601; 8 mm OD: GBPC801; 10 mm OD: GBPC1001
GBKC compression fitting 4 × 2.5 mm OD × ID: GBKC0425-01; 6 × 4 mm OD × ID: GBKC0604-01; 8 × 5 mm OD × ID: GBKC0805-01; 8 × 5.5 or 6 mm OD × ID: GBKC0806-01
GBB male–male adapter male G1/8: GBB0101; male G1/4: GBB0102; male G3/8: GBB0103
GBZ unused auxiliary port plug GBZ01
Threaded valve-exhaust silencers GBSL01,GBSLM01,GBESL01
GPTL push-lock flow control 6 mm OD: GPTL601A,GPTL601AD,GPTL601B,GPTL601BD; 8 mm OD: GPTL801A,GPTL801AD,GPTL801B,GPTL801BD
GPSS universal flow control 6 mm OD: GPSS601A,GPSS601AD,GPSS601B,GPSS601BD; 8 mm OD: GPSS801A,GPSS801AD,GPSS801B,GPSS801BD
PSA / PSA-S inline flow control 4 mm OD: PSA4,PSA4-S,PSA4D,PSA4D-S; 6 mm OD: PSA6,PSA6-S,PSA6D,PSA6D-S; 8 mm OD: PSA8,PSA8-S,PSA8D,PSA8D-S; 10 mm OD: PSA10,PSA10-S,PSA10D,PSA10D-S; 12 mm OD: PSA12,PSA12-S,PSA12D,PSA12D-S
GPSA inline flow control 4 mm OD: GPSA4,GPSA4D; 6 mm OD: GPSA6,GPSA6D; 8 mm OD: GPSA8,GPSA8D; 10 mm OD: GPSA10,GPSA10D; 12 mm OD: GPSA12,GPSA12D
PPA plug-in valve-exhaust silencer 6 mm OD: PPA6; 8 mm OD: PPA8; 10 mm OD: PPA10; 12 mm OD: PPA12
US98A / UE95A PU tubing 4 × 2.5 mm OD × ID: US98A040025100MBU,UE95A040025100MBU; 6 × 4 mm OD × ID: US98A060040100MBU,UE95A060040100MBU; 8 × 5 mm OD × ID: US98A080050100MBU,UE95A080050100MBU; 10 × 6.5 mm OD × ID: US98A100065100MBU,UE95A100065100MBU; 12 × 8 mm OD × ID: US98A120080100MBU,UE95A120080100MBU
ASC separate inline threaded flow control ASC10006G
GAFR upstream filter/regulator GAFR20006SG

Separately selected alternatives; no supplied-kit or stock promise. Connect both SAI32 working ports with actual G1/8 fittings and correct seals. Check insertion depth, tool/rotation clearance, flow and tube loads. PT/G/NPT are not interchangeable; G needs the correct face seal/mating surface. M10 × 1.25 is the rod thread, not an air port.

Use suitable soft nylon/PU and match OD; compression fittings also need the listed ID. Where offered: D = black, blank = grey, -M = miniature; -S identifies specified 304 stainless parts, not an all-stainless cylinder/circuit. GPHF: male and extra female G1/8 connections; connect or permissibly seal the female branch, which is not a tube socket. Never bridge chambers or unrelated controls with tees, Y/cross/distributors.

Ordinary push-in fittings/flow controls: 0–1 MPa, −20–70 °C. GBPC: 0–0.9 MPa, 0–150 °C; SAI path 0.15–0.9 MPa, 0–70 °C. GBKC/GBB/GBZ: 0–1 MPa, 0–150 °C; SAI path 0.15–1 MPa, 0–70 °C. Apply lower valve/tube/sensor limits. Component vacuum ratings do not rate the cylinder assembly for vacuum.

GBKC0806-01 takes 8 × 5.5 or 8 × 6 mm tube; 8 × 5 mm needs GBKC0805-01. Install threads using the body hex, not the tube nut; insert tube fully before tightening. GBB has two male ends; match its labelled second end to a female component. GBZ is only for permitted unused auxiliary connections, never active cylinder ports.

Cylinder-end A controls thread → tube exhaust (meter-out), with free reverse supply; B controls tube → cylinder supply (meter-in). A is usual for double-acting exhaust control; B needs a designed meter-in circuit. Start closed/open slowly; not safety isolation. GPTL1/8 cap adjustment: 0.08 N·m recommended, not pipe-thread torque. PSA/PSA-S/GPSA: threadless metric tube-to-tube, no A/B suffix; match both ODs/flow symbol. GPSA does not mean G thread.

PPA6/8/10/12: plain 6/8/10/12 mm stems for matching metric push-in sockets on separate valve exhaust; POM body/cap, PE filter, 0–1 MPa, −20–70 °C. The 25 dB at 0.5 MPa catalog test is not a site-noise promise. No D/thread suffix. PPA/threaded silencers are not cylinder-port parts, inlet filters or shutoffs. Match exhaust thread/flow/backpressure; GBESL adjustment changes backpressure.

ASC: separate inline control, two female ports needing male fittings. Follow P/A/check-throttle symbols. Component 0.05–0.95 MPa, −20–70 °C; SAI path 0.15–0.95 MPa or narrower.

GAFR20006SG: separate upstream filter/regulator, 40 µm element, PC bowl, manual/differential-pressure drain, bracket/gauge. Inlet ≤1 MPa; setting 0.15–0.9 MPa; −5–70 °C, non-freezing. Check flow, pressure drop, condensate, bowl environment and downstream limits. Not cylinder-mounted or a vacuum regulator.

US98A/UE95A: blue 100 m coil examples, not supplied cut lengths; 1 MPa at 23 °C, with temperature derating. US98A −20–70 °C; UE95A −40–70 °C; apply lower assembly limits. Match OD/ID, bend radius, routing and flow. Extra 4/10/12 mm ODs do not inherit the 6 × 4 / 8 × 5 speed references.

Separate Directional-Valve and Tube Examples

G1/8 examples: 4V11006BG, 4V12006BG, 4V21006BG, 4V22006BG, 4A11006G, 4A12006G, 4A21006G, 4A22006G. Valve P/A/B and R/S are G1/8 in these06 examples. Separately piped 5V PT examples: 5V11006B050, 5V12006B050, 5V21006B050, 5V22006B050. Their PT ports require their own correctly threaded fittings; a G cylinder does not change valve thread. Separate circuit examples; no speed guarantee. B means DC24V; cylinder SKU does not select voltage. 10/20 are single/double actuation. Listed 5V uses 050 (0.5 m leads), internal pilot and PT ports only; no G or NPT 5V code is inferred. Listed 4V uses default DIN entry and internal pilot; I flying-lead or -W external-pilot variants are not these examples. 4A needs independent pneumatic pilot commands, no coil voltage; verify pilot-port thread and pilot-air supply. The listed valve limit is 0.15–0.8 MPa with 40 µm filtered air, below the cylinder maximum of 1.0 MPa. Verify switching logic; apply the circuit conditions below.

Blue 100 m coil examples: PA6060040100MBU (PA6, 6×4 mm, -10 to 70°C,3 MPa at 23°C,min bend 45 mm); PA12060040100MBU (PA12, 6×4 mm, -40 to 70°C,2 MPa at 23°C,min bend 35 mm); UN54D060040100MBU (flame-resistant, 6×4 mm, -20 to 70°C,1 MPa at 23°C,min bend 12 mm); UN54D080050100MBU (flame-resistant, 8×5 mm, -20 to 70°C,1 MPa at 23°C,min bend 18 mm). Derate pressure for temperature; select compatible fittings and length. Coils are not supplied cut lengths. No reviewed nylon 8×5 mm option; 8×6 is different. Flame resistance is not a fireproof-system claim.

M5 chart entries are separate valve connections, not SAI cylinder ports. 4M needs NAMUR; no SAI mounting/adapter compatibility is established.

Circuit-Sizing Reference

Theoretical reference speed Flow-area and tube reference
300 mm/s 1.3 mm² effective flow area; 6 × 4 mm tube OD × ID
400 mm/s 1.7 mm² effective flow area; 6 × 4 mm tube OD × ID
500 mm/s 2.1 mm² effective flow area; 6 × 4 mm tube OD × ID
600 mm/s 2.5 mm² effective flow area; 8 × 5 mm tube OD × ID
700 mm/s 2.9 mm² effective flow area; 8 × 5 mm tube OD × ID
800 mm/s 3.4 mm² effective flow area; 8 × 5 mm tube OD × ID

Generic bore-based circuit references, not measured SAI32 speeds. Flow area is neither piston area nor rated valve flow. Pressure, tube length and load are unspecified; the 0.5 MPa force example does not apply. Design for actual valve flow, fittings, tubing, cushioning, exhaust backpressure and the 30–800 mm/s cylinder limit. Similar nominal sizes do not make metric tubes fit inch sockets.

Use the catalog above for dimensions, mounting drawings and symbol positions. Before installation, check full configuration, space and separately selected accessories.

Product form

Specifications: SI32BX187TCTCM1NG — SI series order for a double-acting single-rod cylinder, supplied as SAI; 32 mm bore × 187 mm... Read more

SKU: SI32BX187TCTCM1NG

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    Description

    Specifications: SI32BX187TCTCM1NG — SI series order for a double-acting single-rod cylinder, supplied as SAI; 32 mm bore × 187 mm stroke; SUS304 rod (B); non-magnetic piston; TC trunnion + TCM1 support (store set); NBR seals (N); G1/8 ports (G).

    SI is discontinued. When you order this SI model, we supply the corresponding SAI replacement.

    The Airtac SI series has been updated to the Airtac SAI series.

    Product Catalog

    Supplied SAI — dimensions and accessories.

    Download Airtac Product Catalog (PDF)

    For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

    Historical SI Catalog

    Download Airtac Product Catalog (PDF)

    Specifications, dimensions and options below describe supplied SAI. The SI catalog is historical. Original listing service references require revision checks. Check mounting dimensions and accessory codes: matching suffixes do not prove interchangeability.

    SI to SAI replacement guide

    Model Code Explained

    Code Meaning
    SI Historical SI order identity; confirmed supply is SAI
    32 32 mm bore
    B SUS304 stainless steel
    X Separator before stroke
    187 187 mm stroke
    No magnet suffix Without built-in magnet
    TCTCM1 TC trunnion with TCM1 support
    N NBR seal option
    G G1/8 working ports

    TCTCM1 is the seller's package of F-SAI32TC trunnion and F-SI32TCM1 support, not a printed Airtac complete-cylinder code. Confirm bracket, support and fastener quantities.

    Supplied SAI Specifications

    Parameter Value
    Model SI32BX187TCTCM1NG
    Action Double acting, single rod
    Bore 32 mm
    Stroke 187 mm; Special stroke; confirm order and delivery conditions
    Piston rod material SUS304 stainless steel
    Magnetic piston Without magnet
    Mounting selection TC trunnion with TCM1 support
    Seal option NBR
    Working ports G1/8; two working air ports
    Working medium Air filtered to 40 µm or finer
    Operating pressure 0.15–1 MPa (1.5–10 bar; approximately 22–145 psi)
    Proof pressure 1.5 MPa (15 bar); not continuous operating pressure
    Temperature -20 to 70 °C; apply the complete system limits
    Piston speed 30–800 mm/s
    Stroke tolerance +1 / -0 mm
    Cushioning Adjustable pneumatic cushion; 27 mm nominal cushion reference
    Rod diameter / end thread 12 mm / M10×1.25
    Cylinder reference weight 964.78 g; catalog calculation, not measured shipping weight

    Reference weight = 489.8 + 2.54 × 187 g, decimal grams, from the matching non-magnetic SAI single-rod base. A/B rod and H/N seal mass differences are unquantified: not certified variant mass. Excludes brackets, rod joints, sensors and packaging; actual weight prevails.

    The 27 mm nominal cushion distance does not guarantee usable deceleration length for shorter strokes. Verify actual load/speed performance.

    Features and Operation

    ISO15552 standard cylinder, formerly ISO6431.

    Compact special-shaped bidirectional piston sealing structure with oil storage.

    Corrosion-resistant profiled aluminium tube; no tie rods; external sensor grooves.

    Stable adjustable pneumatic cushioning.

    Multiple cylinder variants and mounting accessories available.

    External and Mounting Dimensions

    A+stroke ends at rear-cover face; overall formulas add rear boss NA once. Bare body excludes accessories, sensors, joints and packaging. Magnetic/nonmagnetic dimensions match. Drawing-specific symbols are not extra overall dimensions. Numbers are mm; threads are explicit. For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.

    Basic dimension / drawing symbol Dimension (mm) / thread
    Illustrated A + stroke to rear-cover face 329 mm = 142 + 187
    Body face span: AC + stroke 281 mm = 94 + 187
    Derived bare retracted length: A + stroke + NA 332 mm = 142 + 187 + 3
    Derived bare extended length: A + 2 × stroke + NA 519 mm = 142 + 2 × 187 + 3
    Body cross-section 47 × 47 mm
    Base drawing symbols A=142 mm before adding the actual stroke;AB=48;AC=94 mm before adding the actual stroke;AD=27.5;AE=27.5;B=47;D=12;DA=29;E=M10×1.25;EA=22;F=17;FA=6;M=30;MA=19;H=10;K=M6;KA=16;KB=32.5;N=30;NA=3;P=G1/8;PA=13;PB=5.5

    Selected Mounting Dimensions

    Accessory / drawing symbols Dimension (mm) / thread
    TC — Intermediate trunnion mounting; F-SAI32TC A + stroke=329 = 142 + 187;C + stroke=281 = 94 + 187;D=12;F=68.5;G=52;H=76;J=31;S=47;X=3;T=32.5
    TCM1 — Trunnion support type 1; F-SI32TCM1 A + stroke=329 = 142 + 187;C + stroke=281 = 94 + 187;AA=31;B=72.5;CA=40;D=11;E=9;F=60;G=80;H=65;I=12;J=5;K=52;L=64;M=79;N=12
    Illustrated adjustable support center 140.5 mm = (94 + 187) / 2

    Mounting and Rod-End Accessories

    Mounting option Part code and material
    LB — Axial foot mounting F-SI32LB; Low-carbon steel
    FA — Front flange mounting F-SI32FA; Aluminium alloy
    CA — Single rear clevis F-SE32CA; Ductile cast iron
    CB — Double rear clevis F-SE32CB; Ductile cast iron
    CR — Single clevis connection F-SI32CR; Ductile cast iron
    TC — Intermediate trunnion mounting F-SAI32TC; Ductile cast iron
    FTC — Front-cover trunnion mounting F-SI32FTC; Ductile cast iron
    TCM1 — Trunnion support type 1 F-SI32TCM1; Ductile cast iron
    TCM2 — Trunnion support type 2 F-SI32TCM2; Aluminium alloy
    FB — Rear flange mounting F-SI32FA; Aluminium alloy

    FA/FB share a flange plate at different positions. CR requires CB. TC/FTC need the listed TCM1/TCM2: support size numbers may differ from bore. Confirm package and fasteners.

    TC is adjustable and separately orderable for this bore. Drawing-reference support centers: position for actual load.

    TC locking torque: 2–3 N·m; static holding-force reference: 800 N, not cylinder thrust or payload. Above this, specify factory nonstandard fixed TC. Place bracket on barrel ledges and position it. Pre-tighten; check bracket and barrel sloping faces contact. 32/40: tighten 8 black screws through pre-, intermediate and final tightening.

    Drawing holes: LB 4 AP; FA/FB 4 BP; CR 4 K through-holes and 4 L counterbores; TCM1 4 E; TCM2 4 L through-holes and 4 K counterbores. CA DQ/CB CP tolerance: ±0.1 mm. Hole counts do not specify supplied fastener quantities.

    Rod-End Joint Dimensions

    Joint / drawing symbol Dimension (mm) / thread / angle
    I joint — F-M10X125I NC=10;ND=40;NE=50;NF=15;NG=20;NH=M10×1.25;NM=10;Reference weight=75 g
    Y clevis joint — F-M10X125Y A=52;B=40;C=20;D=19;F=18;E=M10×1.25;G=25;H=10;I=10;Reference weight=86 g
    Floating joint — F-M10X125F MA=58;MB=22;MC=7;MD=21;ME=26;MF=11;MG=6;MH=10;MI_MJ=M10×1.25;MK=12°;Reference weight=107 g
    Spherical rod-end joint — F-M10X125U PA=11;PB=26;PC=10;PD=20;PE=43;PF=56;PG=M10×1.25;PH=13°;PI=19;PJ=17;PK=14;Reference weight=69 g

    M10×1.25 rod joints use the carbon-steel catalog category; subparts/finishes are unspecified. Select joints/guides for load. Joint mass is excluded from cylinder weight. Y drawing: no separate pin-kit code or guaranteed kit count.

    Service References — Confirm Exact Revision

    Parameter Value
    TPU seal-set reference P-SAI32-R1
    NBR seal-set reference P-SAI32N-R1
    Fluororubber seal-set reference P-SAI32-R2
    Magnet-ring reference GMED17X28.8X5
    Guide-ring reference SAI32 grooved wear-resistant guide ring associated with the magnet ring
    Front-cover reference SAI32 front cover
    Rear-cover reference SAI32 rear cover

    Confirm revision, dimensions, material and fit for these original service references; interchangeability is unverified. Cover names are not order codes; seal alternatives are not all fitted.

    Non-magnetic cylinder: magnet/guide-ring references imply neither a fitted magnet nor approved magnetic conversion.

    SAI-coded service references retained from the original listing are not confirmed here as compatible with historical SI cylinders.

    Force and Application

    Parameter Value
    Extension effective area 804 mm²; catalog rounded single-rod area
    Extension at 0.5 MPa 402 N theoretical
    Retraction effective area 690 mm²; catalog rounded single-rod area
    Retraction at 0.5 MPa 345 N theoretical

    Theoretical axial force = effective area (mm²) × pressure (MPa), before friction/losses. Rod area reduces retraction area. Not safe working loads or guaranteed payloads.

    Installation and Maintenance

    Qualified personnel only. Before maintenance: secure loads, guard motion, isolate power/air and release residual pressure. Prevent unexpected restart motion; design for power/air loss.

    Use clean, dry air filtered ≤40 µm; remove water, degraded oil and debris. Protect from dust, corrosion, coolant, weld spatter, vibration, heat and freezing; assess unusually dry air. Strong magnetic fields affect sensing.

    Start unloaded; increase load gradually. Align rod/load; guide against side load, bending, impact and torque. Check long-stroke buckling, sag, support and air use. Rod joints do not replace guides.

    Load-ratio guidance: ≤0.7 static/low speed; ≤0.5 at 50–500 mm/s; ≤0.3 above 500 mm/s. Not structural safety factors or payload guarantees; obey cylinder pressure/speed limits.

    Fit flow controls at both ports; double action normally uses meter-out. Start closed; open gradually. Set cushions for load/speed without forcing screws. Heavy/fast loads may need an external absorber or deceleration circuit.

    Compressibility/leakage defeat assumed precise prolonged closed-center stops or automatic multi-cylinder synchronization. Swing links need CA/CB/TC pivots, not rigid LB mounts forced through arcs. Match flange direction/support height to load.

    Normally no added oil is needed. Once introduced, continuously use additive-free ISO-VG32 turbine oil. Oil-mist guide: ≤25 mg/m³; 0.5–5 drops per 1000 L. Size lubricator for flow; avoid excess/incompatible oil.

    Clean pipes; keep sealant off leading threads. Start required tape 1.5–2 threads back. Verify tube pressure/temperature, OD/ID and bend radius. Hot spatter may require metal/flame-resistant tubing.

    Protect sliding surfaces; periodically operate stored cylinders and prevent corrosion. Use the lowest cylinder/fitting/valve/tube/sensor/cable limit; temperature options do not raise other ratings.

    Internal Components — SAI Catalog Reference

    Item Material reference
    1. Nut Carbon steel / stainless steel
    2. Piston rod S45C hard-chrome-plated ground bar / stainless steel
    3. Front-cover O-ring TPU
    4. Front cover Aluminium alloy
    5. Bushing Wear-resistant material
    6. Cushion O-ring TPU
    7. Barrel Aluminium alloy
    8. Piston-rod O-ring NBR
    9. Piston Aluminium alloy
    10. Piston O-ring NBR
    11. Wear ring Wear-resistant material
    12. Magnet Not fitted in this non-magnetic cylinder. Catalog magnetic-version reference: Plastic type for bores100 and below; rubber type for other bores
    13. Hexagon socket bolt Carbon steel
    14. Cushion seal TPU
    15. Rear cover Aluminium alloy
    16. Support screw cap Carbon steel / stainless steel

    SAI structure reference, not an option material certificate. Ordered rod/seal choices prevail: A/B is not an all-stainless cylinder; a seal option does not replace every elastomer.

    Series Ordering Options

    Parameter Value
    Rod material choices Blank: Medium-carbon steel; A: SUS420J2 stainless steel; B: SUS304 stainless steel
    Seal choices Blank: TPU; H: Fluororubber; N: NBR
    Magnet choice Blank: no magnet; S: magnet fitted, sensors separately selected
    Thread choices PT, G or NPT as specified by the actual order; do not mix thread standards
    Catalog standard strokes 25, 50, 75, 80, 100, 125, 150, 160, 175, 200, 250, 300, 350, 400, 450, 500 mm
    Maximum / allowable stroke 1000 / 1800 mm; separate catalog limits, not a list of all standard strokes
    Stroke tolerance bands 0–250 mm: +1 / -0 mm; 251–1000 mm: +1.5 / -0 mm; 1001–1500 mm: +2 / -0 mm; above 1500 mm not specified

    Series alternatives are not simultaneous features. Confirm special strokes/unlisted combinations. Retain the full model; separately select mounts, joints, sensors and circuit parts.

    Magnetic Sensing

    This model has no built-in magnet. DMSE and CMSE magnetic sensors are not applicable to this piston as ordered; adding a sensor does not add a magnet. A separately confirmed magnetic cylinder configuration is required for magnetic detection.

    Connection and Tube-Side Options

    Separately selected component Complete ordering codes; tube dimensions as labelled
    GPC straight 6 mm OD: GPC601,GPC601D; 8 mm OD: GPC801,GPC801D; 10 mm OD: GPC1001,GPC1001D; 12 mm OD: GPC1201,GPC1201D
    GPL elbow 6 mm OD: GPL601,GPL601D; 8 mm OD: GPL801,GPL801D; 10 mm OD: GPL1001,GPL1001D; 12 mm OD: GPL1201,GPL1201D
    GPC miniature straight 4 mm OD: GPC401-M,GPC401D-M; 6 mm OD: GPC601-M,GPC601D-M
    GPL miniature elbow 4 mm OD: GPL401-M,GPL401D-M; 6 mm OD: GPL601-M,GPL601D-M
    GPLL extended elbow 4 mm OD: GPLL401,GPLL401D; 6 mm OD: GPLL601,GPLL601D; 8 mm OD: GPLL801,GPLL801D; 10 mm OD: GPLL1001,GPLL1001D
    GPEB branch tee 4 mm OD: GPEB401,GPEB401D; 6 mm OD: GPEB601,GPEB601D; 8 mm OD: GPEB801,GPEB801D; 10 mm OD: GPEB1001,GPEB1001D
    GPED run tee 4 mm OD: GPED401,GPED401D; 6 mm OD: GPED601,GPED601D; 8 mm OD: GPED801,GPED801D; 10 mm OD: GPED1001,GPED1001D
    GPYB Y fitting 4 mm OD: GPYB401,GPYB401D; 6 mm OD: GPYB601,GPYB601D; 8 mm OD: GPYB801,GPYB801D; 10 mm OD: GPYB1001,GPYB1001D
    GPH banjo elbow 4 mm OD: GPH401,GPH401D; 6 mm OD: GPH601,GPH601D; 8 mm OD: GPH801,GPH801D
    GPHF female-branch banjo 4 mm OD: GPHF401,GPHF401D; 6 mm OD: GPHF601,GPHF601D; 8 mm OD: GPHF801,GPHF801D
    GPHW twin banjo 4 mm OD: GPHW401,GPHW401D; 6 mm OD: GPHW601,GPHW601D; 8 mm OD: GPHW801,GPHW801D
    GPZB cross fitting 6 mm OD: GPZB601,GPZB601D; 8 mm OD: GPZB801,GPZB801D
    GPKD reducing distribution fitting main 6 / branch 4 mm OD: GPKD6-401,GPKD6-401D
    GBPC metal straight 4 mm OD: GBPC401; 6 mm OD: GBPC601; 8 mm OD: GBPC801; 10 mm OD: GBPC1001
    GBKC compression fitting 4 × 2.5 mm OD × ID: GBKC0425-01; 6 × 4 mm OD × ID: GBKC0604-01; 8 × 5 mm OD × ID: GBKC0805-01; 8 × 5.5 or 6 mm OD × ID: GBKC0806-01
    GBB male–male adapter male G1/8: GBB0101; male G1/4: GBB0102; male G3/8: GBB0103
    GBZ unused auxiliary port plug GBZ01
    Threaded valve-exhaust silencers GBSL01,GBSLM01,GBESL01
    GPTL push-lock flow control 6 mm OD: GPTL601A,GPTL601AD,GPTL601B,GPTL601BD; 8 mm OD: GPTL801A,GPTL801AD,GPTL801B,GPTL801BD
    GPSS universal flow control 6 mm OD: GPSS601A,GPSS601AD,GPSS601B,GPSS601BD; 8 mm OD: GPSS801A,GPSS801AD,GPSS801B,GPSS801BD
    PSA / PSA-S inline flow control 4 mm OD: PSA4,PSA4-S,PSA4D,PSA4D-S; 6 mm OD: PSA6,PSA6-S,PSA6D,PSA6D-S; 8 mm OD: PSA8,PSA8-S,PSA8D,PSA8D-S; 10 mm OD: PSA10,PSA10-S,PSA10D,PSA10D-S; 12 mm OD: PSA12,PSA12-S,PSA12D,PSA12D-S
    GPSA inline flow control 4 mm OD: GPSA4,GPSA4D; 6 mm OD: GPSA6,GPSA6D; 8 mm OD: GPSA8,GPSA8D; 10 mm OD: GPSA10,GPSA10D; 12 mm OD: GPSA12,GPSA12D
    PPA plug-in valve-exhaust silencer 6 mm OD: PPA6; 8 mm OD: PPA8; 10 mm OD: PPA10; 12 mm OD: PPA12
    US98A / UE95A PU tubing 4 × 2.5 mm OD × ID: US98A040025100MBU,UE95A040025100MBU; 6 × 4 mm OD × ID: US98A060040100MBU,UE95A060040100MBU; 8 × 5 mm OD × ID: US98A080050100MBU,UE95A080050100MBU; 10 × 6.5 mm OD × ID: US98A100065100MBU,UE95A100065100MBU; 12 × 8 mm OD × ID: US98A120080100MBU,UE95A120080100MBU
    ASC separate inline threaded flow control ASC10006G
    GAFR upstream filter/regulator GAFR20006SG

    Separately selected alternatives; no supplied-kit or stock promise. Connect both SAI32 working ports with actual G1/8 fittings and correct seals. Check insertion depth, tool/rotation clearance, flow and tube loads. PT/G/NPT are not interchangeable; G needs the correct face seal/mating surface. M10 × 1.25 is the rod thread, not an air port.

    Use suitable soft nylon/PU and match OD; compression fittings also need the listed ID. Where offered: D = black, blank = grey, -M = miniature; -S identifies specified 304 stainless parts, not an all-stainless cylinder/circuit. GPHF: male and extra female G1/8 connections; connect or permissibly seal the female branch, which is not a tube socket. Never bridge chambers or unrelated controls with tees, Y/cross/distributors.

    Ordinary push-in fittings/flow controls: 0–1 MPa, −20–70 °C. GBPC: 0–0.9 MPa, 0–150 °C; SAI path 0.15–0.9 MPa, 0–70 °C. GBKC/GBB/GBZ: 0–1 MPa, 0–150 °C; SAI path 0.15–1 MPa, 0–70 °C. Apply lower valve/tube/sensor limits. Component vacuum ratings do not rate the cylinder assembly for vacuum.

    GBKC0806-01 takes 8 × 5.5 or 8 × 6 mm tube; 8 × 5 mm needs GBKC0805-01. Install threads using the body hex, not the tube nut; insert tube fully before tightening. GBB has two male ends; match its labelled second end to a female component. GBZ is only for permitted unused auxiliary connections, never active cylinder ports.

    Cylinder-end A controls thread → tube exhaust (meter-out), with free reverse supply; B controls tube → cylinder supply (meter-in). A is usual for double-acting exhaust control; B needs a designed meter-in circuit. Start closed/open slowly; not safety isolation. GPTL1/8 cap adjustment: 0.08 N·m recommended, not pipe-thread torque. PSA/PSA-S/GPSA: threadless metric tube-to-tube, no A/B suffix; match both ODs/flow symbol. GPSA does not mean G thread.

    PPA6/8/10/12: plain 6/8/10/12 mm stems for matching metric push-in sockets on separate valve exhaust; POM body/cap, PE filter, 0–1 MPa, −20–70 °C. The 25 dB at 0.5 MPa catalog test is not a site-noise promise. No D/thread suffix. PPA/threaded silencers are not cylinder-port parts, inlet filters or shutoffs. Match exhaust thread/flow/backpressure; GBESL adjustment changes backpressure.

    ASC: separate inline control, two female ports needing male fittings. Follow P/A/check-throttle symbols. Component 0.05–0.95 MPa, −20–70 °C; SAI path 0.15–0.95 MPa or narrower.

    GAFR20006SG: separate upstream filter/regulator, 40 µm element, PC bowl, manual/differential-pressure drain, bracket/gauge. Inlet ≤1 MPa; setting 0.15–0.9 MPa; −5–70 °C, non-freezing. Check flow, pressure drop, condensate, bowl environment and downstream limits. Not cylinder-mounted or a vacuum regulator.

    US98A/UE95A: blue 100 m coil examples, not supplied cut lengths; 1 MPa at 23 °C, with temperature derating. US98A −20–70 °C; UE95A −40–70 °C; apply lower assembly limits. Match OD/ID, bend radius, routing and flow. Extra 4/10/12 mm ODs do not inherit the 6 × 4 / 8 × 5 speed references.

    Separate Directional-Valve and Tube Examples

    G1/8 examples: 4V11006BG, 4V12006BG, 4V21006BG, 4V22006BG, 4A11006G, 4A12006G, 4A21006G, 4A22006G. Valve P/A/B and R/S are G1/8 in these06 examples. Separately piped 5V PT examples: 5V11006B050, 5V12006B050, 5V21006B050, 5V22006B050. Their PT ports require their own correctly threaded fittings; a G cylinder does not change valve thread. Separate circuit examples; no speed guarantee. B means DC24V; cylinder SKU does not select voltage. 10/20 are single/double actuation. Listed 5V uses 050 (0.5 m leads), internal pilot and PT ports only; no G or NPT 5V code is inferred. Listed 4V uses default DIN entry and internal pilot; I flying-lead or -W external-pilot variants are not these examples. 4A needs independent pneumatic pilot commands, no coil voltage; verify pilot-port thread and pilot-air supply. The listed valve limit is 0.15–0.8 MPa with 40 µm filtered air, below the cylinder maximum of 1.0 MPa. Verify switching logic; apply the circuit conditions below.

    Blue 100 m coil examples: PA6060040100MBU (PA6, 6×4 mm, -10 to 70°C,3 MPa at 23°C,min bend 45 mm); PA12060040100MBU (PA12, 6×4 mm, -40 to 70°C,2 MPa at 23°C,min bend 35 mm); UN54D060040100MBU (flame-resistant, 6×4 mm, -20 to 70°C,1 MPa at 23°C,min bend 12 mm); UN54D080050100MBU (flame-resistant, 8×5 mm, -20 to 70°C,1 MPa at 23°C,min bend 18 mm). Derate pressure for temperature; select compatible fittings and length. Coils are not supplied cut lengths. No reviewed nylon 8×5 mm option; 8×6 is different. Flame resistance is not a fireproof-system claim.

    M5 chart entries are separate valve connections, not SAI cylinder ports. 4M needs NAMUR; no SAI mounting/adapter compatibility is established.

    Circuit-Sizing Reference

    Theoretical reference speed Flow-area and tube reference
    300 mm/s 1.3 mm² effective flow area; 6 × 4 mm tube OD × ID
    400 mm/s 1.7 mm² effective flow area; 6 × 4 mm tube OD × ID
    500 mm/s 2.1 mm² effective flow area; 6 × 4 mm tube OD × ID
    600 mm/s 2.5 mm² effective flow area; 8 × 5 mm tube OD × ID
    700 mm/s 2.9 mm² effective flow area; 8 × 5 mm tube OD × ID
    800 mm/s 3.4 mm² effective flow area; 8 × 5 mm tube OD × ID

    Generic bore-based circuit references, not measured SAI32 speeds. Flow area is neither piston area nor rated valve flow. Pressure, tube length and load are unspecified; the 0.5 MPa force example does not apply. Design for actual valve flow, fittings, tubing, cushioning, exhaust backpressure and the 30–800 mm/s cylinder limit. Similar nominal sizes do not make metric tubes fit inch sockets.

    Use the catalog above for dimensions, mounting drawings and symbol positions. Before installation, check full configuration, space and separately selected accessories.

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