Airtac SAI series: standard cylinder - SAI40BX596FANG

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Description

Specifications: SAI40BX596FANG — SAI series double-acting single-rod cylinder; 40 mm bore × 596 mm stroke; SUS304 rod (B); non-magnetic piston; front flange mounting (FA); NBR seals (N); G1/4 ports (G).

Product Catalog

Download Airtac Product Catalog (PDF)

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

SI to SAI replacement guide

Model Code Explained

Code Meaning
SAI Standard double-acting single-rod cylinder
40 40 mm bore
B SUS304 stainless steel
X Separator before stroke
596 596 mm stroke
No magnet suffix Without built-in magnet
FA Front flange mounting
N NBR seal option
G G1/4 working ports

Technical Specifications

Parameter Value
Model SAI40BX596FANG
Action Double acting, single rod
Bore 40 mm
Stroke 596 mm; Special stroke; confirm order and delivery conditions
Piston rod material SUS304 stainless steel
Magnetic piston Without magnet
Mounting selection Front flange mounting
Seal option NBR
Working ports G1/4; 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 +1.5 / -0 mm
Cushioning Adjustable pneumatic cushion; 27 mm nominal cushion reference
Rod diameter / end thread 16 mm / M12×1.25
Cylinder reference weight 2807.08 g; catalog calculation, not measured shipping weight

Reference weight = 733 + 3.48 × 596 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 755 mm = 159 + 596
Body face span: AC + stroke 701 mm = 105 + 596
Derived bare retracted length: A + stroke + NA 758.5 mm = 159 + 596 + 3.5
Derived bare extended length: A + 2 × stroke + NA 1354.5 mm = 159 + 2 × 596 + 3.5
Body cross-section 53 × 53 mm
Base drawing symbols A=159 mm before adding the actual stroke;AB=54;AC=105 mm before adding the actual stroke;AD=32;AE=32;B=53;D=16;DA=33;E=M12×1.25;EA=24;F=17;FA=7;M=35;MA=21;H=13;K=M6;KA=17;KB=38;N=35;NA=3.5;P=G1/4;PA=17;PB=6

Selected Mounting Dimensions

Accessory / drawing symbols Dimension (mm) / thread
FA — Front flange mounting; F-SI40FA A + stroke=755 = 159 + 596;C + stroke=701 = 105 + 596;BA=35.5;BB=10;BC=53;BD=36;BE=90;BF=72;BP=9;T=38

Mounting and Rod-End Accessories

Mounting option Part code and material
LB — Axial foot mounting F-SI40LB; Low-carbon steel
FA — Front flange mounting F-SI40FA; Aluminium alloy
CA — Single rear clevis F-SE40CA; Ductile cast iron
CB — Double rear clevis F-SE40CB; Ductile cast iron
CR — Single clevis connection F-SI40CR; Ductile cast iron
TC — Intermediate trunnion mounting F-SAI40TC; Ductile cast iron
FTC — Front-cover trunnion mounting F-SI40FTC; Ductile cast iron
TCM1 — Trunnion support type 1 F-SI40TCM1; Ductile cast iron
TCM2 — Trunnion support type 2 F-SI40TCM2; Aluminium alloy
FB — Rear flange mounting F-SI40FA; 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: 4–6 N·m; static holding-force reference: 1200 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-M12X125I NC=12;ND=48;NE=62;NF=24;NG=20;NH=M12×1.25;NM=12;Reference weight=127 g
Y clevis joint — F-M12X125Y NA=25.4;NC=12;ND=48;NP=24;NQ=62;NM=12;NH=M12×1.25;PA=32.4;PB=26.2;Reference weight=175 g
Floating joint — F-M12X125F MA=58;MB=22;MC=8;MD=21;ME=28;MF=11.5;MG=7;MH=12;MI_MJ=M12×1.25;MK=12°;Reference weight=130 g
Spherical rod-end joint — F-M12X125U PA=12;PB=32;PC=12;PD=22;PE=50;PF=66;PG=M12×1.25;PH=13°;PI=22;PJ=19;PK=16;Reference weight=108 g

M12×1.25 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-SAI40-R1
NBR seal-set reference P-SAI40N-R1
Fluororubber seal-set reference P-SAI40-R2
Magnet-ring reference GMED22X36.6X5
Guide-ring reference SAI40 grooved wear-resistant guide ring associated with the magnet ring
Cover references SAI40 front cover; SAI40 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.

Force and Application

Parameter Value
Extension effective area 1256 mm²; catalog rounded single-rod area
Extension at 0.5 MPa 628 N theoretical
Retraction effective area 1055 mm²; catalog rounded single-rod area
Retraction at 0.5 MPa 527.5 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, 600, 700, 800 mm
Maximum / allowable stroke 1200 / 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: GPC602,GPC602D; 8 mm OD: GPC802,GPC802D; 10 mm OD: GPC1002,GPC1002D; 12 mm OD: GPC1202,GPC1202D; 4 mm OD: GPC402-M,GPC402D-M
GPL elbow 6 mm OD: GPL602,GPL602D; 8 mm OD: GPL802,GPL802D; 10 mm OD: GPL1002,GPL1002D; 12 mm OD: GPL1202,GPL1202D; 4 mm OD: GPL402-M,GPL402D-M
GPLL extended elbow 4 mm OD: GPLL402,GPLL402D; 6 mm OD: GPLL602,GPLL602D; 8 mm OD: GPLL802,GPLL802D; 10 mm OD: GPLL1002,GPLL1002D; 12 mm OD: GPLL1202,GPLL1202D
GPEB branch tee 4 mm OD: GPEB402,GPEB402D; 6 mm OD: GPEB602,GPEB602D; 8 mm OD: GPEB802,GPEB802D; 10 mm OD: GPEB1002,GPEB1002D; 12 mm OD: GPEB1202,GPEB1202D
GPED run tee 4 mm OD: GPED402,GPED402D; 6 mm OD: GPED602,GPED602D; 8 mm OD: GPED802,GPED802D; 10 mm OD: GPED1002,GPED1002D; 12 mm OD: GPED1202,GPED1202D
GPYB Y fitting 4 mm OD: GPYB402,GPYB402D; 6 mm OD: GPYB602,GPYB602D; 8 mm OD: GPYB802,GPYB802D; 10 mm OD: GPYB1002,GPYB1002D; 12 mm OD: GPYB1202,GPYB1202D
GPH banjo elbow 6 mm OD: GPH602,GPH602D; 8 mm OD: GPH802,GPH802D; 10 mm OD: GPH1002,GPH1002D
GPHF female-branch banjo 6 mm OD: GPHF602,GPHF602D; 8 mm OD: GPHF802,GPHF802D; 10 mm OD: GPHF1002,GPHF1002D
GPHW twin banjo 6 mm OD: GPHW602,GPHW602D; 8 mm OD: GPHW802,GPHW802D; 10 mm OD: GPHW1002,GPHW1002D
GPZB cross fitting 6 mm OD: GPZB602,GPZB602D; 8 mm OD: GPZB802,GPZB802D; 10 mm OD: GPZB1002,GPZB1002D
GPKD reducing distributor main 8 / branch 6 mm OD: GPKD8-602,GPKD8-602D
GBPC metal straight 4 mm OD: GBPC402; 6 mm OD: GBPC602; 8 mm OD: GBPC802; 10 mm OD: GBPC1002; 12 mm OD: GBPC1202
GBKC compression fitting 6 × 4 mm OD × ID: GBKC0604-02; 8 × 5 mm OD × ID: GBKC0805-02; 8 × 5.5 or 6 mm OD × ID: GBKC0806-02; 10 × 6.5 mm OD × ID: GBKC1065-02; 10 × 7.5 or 8 mm OD × ID: GBKC1075-02; 12 × 8 mm OD × ID: GBKC1208-02; 12 × 9 or 10 mm OD × ID: GBKC1209-02
GBB male–male adapter other end male G1/8: GBB0102; other end male G1/4: GBB0202; other end male G3/8: GBB0203; other end male G1/2: GBB0204
GBD male–female adapter other end female G1/8: GBD0102
GBZ unused auxiliary plug GBZ02
GBSL valve-exhaust silencer GBSL02
GBSLM miniature valve-exhaust silencer GBSLM02
GBESL adjustable valve-exhaust silencer GBESL02
GPSS universal flow control 6 mm OD: GPSS602A,GPSS602AD,GPSS602B,GPSS602BD; 8 mm OD: GPSS802A,GPSS802AD,GPSS802B,GPSS802BD; 10 mm OD: GPSS1002A,GPSS1002AD,GPSS1002B,GPSS1002BD
GPTL push-lock flow control 6 mm OD: GPTL602A,GPTL602AD,GPTL602B,GPTL602BD; 8 mm OD: GPTL802A,GPTL802AD,GPTL802B,GPTL802BD; 10 mm OD: GPTL1002A,GPTL1002AD,GPTL1002B,GPTL1002BD
GPSA tube-to-tube 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 valve-exhaust plug-in silencer 6 mm OD: PPA6; 8 mm OD: PPA8; 10 mm OD: PPA10; 12 mm OD: PPA12
ASC separate inline flow control female G1/4: ASC20008G
GAFR upstream filter/regulator female G1/4: GAFR20008SG,GAFR30008SG
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
PSA tube-to-tube flow control 4 mm OD: PSA4,PSA4D,PSA4-S,PSA4D-S; 6 mm OD: PSA6,PSA6D,PSA6-S,PSA6D-S; 8 mm OD: PSA8,PSA8D,PSA8-S,PSA8D-S; 10 mm OD: PSA10,PSA10D,PSA10-S,PSA10D-S; 12 mm OD: PSA12,PSA12D,PSA12-S,PSA12D-S

Separate options; not an included kit or stock promise. Connect both SAI40 working ports with G1/4 fittings/correct seals; check insertion depth, tool/rotation clearance, flow and tube loads. PT/G/NPT are not interchangeable. G needs correct face seals/mating surfaces. The M12×1.25 rod thread is not an air port.

Use suitable soft nylon/PU; match exact OD and compression-fitting ID. Where offered: D black, blank grey, -M miniature; -S specified stainless-304 parts, not an all-stainless cylinder/circuit. GPHF has male RA/extra female RB of G1/4; connect or permissibly seal RB, not a tube socket. Tees/Y/cross/distributors must not bridge chambers or unrelated controls.

Standard push-in fittings, direct/threadless controls and listed silencers: 0–1 MPa, −20–70 °C. GBPC: 0–0.9 MPa, 0–150 °C; SAI pressure path 0.15–0.9 MPa. GBKC/GBB/GBD/GBZ: 0–1 MPa, 0–150 °C; SAI pressure path 0.15–1 MPa. General cylinder −20–70 °C with 0–150 °C parts gives 0–70 °C or narrower. Apply lower valve/tube/sensor limits; component vacuum data do not rate a vacuum cylinder.

Install threads using the body hex, not locking nut; fully insert tube before tightening. GBKC0806-02 accepts 8 × 5.5 or 8 × 6 mm; 8 × 5 mm needs GBKC0805-02. GBB/GBD are same-standard adapters: BB male–male, BD male–female; table labels the other end. Match gender/size/flow; no cross-thread conversion. GBZ closes permitted unused auxiliary ports only, 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 action; B needs a designed meter-in circuit. Start closed/open slowly. Closed leakage is allowed: not safety shutoffs. GPTL caps on 1/4-port variants: adjustment reference: 0.16 N·m, not pipe-thread torque. Do not force caps/end stops. PSA/PSA-S/GPSA are metric tube-to-tube controls without A/B suffixes; match both ODs/check-throttle symbol. GPSA does not mean G thread.

Listed silencers serve separate valve exhaust: match thread/flow/backpressure. Not cylinder-port fittings, inlet filters or shutoffs. GBESL adjustment changes backpressure. PPA6/8/10/12 have plain metric stems for matching sockets: POM body/cap, PE filter, 0–1 MPa, −20–70 °C; 25 dB at 0.5 MPa is a catalog test, not a site-noise promise. PPA has no D or thread suffix. GBSL catalog test: 13 dB at 0.5 MPa; do not apply PT noise figures to G variants.

ASC20008G: separate two-female-G1/4-port inline control; needs male fittings. Follow P/A/check-throttle symbol. 0.05–0.95 MPa, −20–70 °C and 40 µm-or-finer filtered air; SAI pressure path 0.15–0.95 MPa before lower limits. Rated flow is not guaranteed cylinder speed.

GAFR20008SG,GAFR30008SG: separate upstream G1/4 filter/regulator: 40 µm, PC bowl, differential/manual drain, bracket/round gauge, no reverse-flow valve. Inlet ≤1 MPa, setting 0.15–0.9 MPa, −5–70 °C non-freezing. Respect IN/OUT, flow/pressure loss, condensate, bowl environment and downstream limits. Not cylinder-mounted or a vacuum regulator.

US98A/UE95A examples: blue 100 m coils, not included cut lengths; 1 MPa at 23 °C with temperature derating: US98A −20–70 °C, UE95A −40–70 °C. Match OD/ID, bend radius, routing and flow; thinner low-pressure tubes are not equivalent. Only listed sizing diameters have the reference-speed association.

Separate Directional-Valve and Tube Examples

4A G: single control 4A11006G, 4A21006G, 4A21008G; double control 4A12006G, 4A22006G, 4A22008G. 4V G: single control 4V11006BG, 4V21006BG, 4V21008BG; double control 4V12006BG, 4V22006BG, 4V22008BG. 5V PT: single control 5V11006B050, 5V21006B050, 5V21008B050; double control 5V12006B050, 5V22006B050, 5V22008B050. All listed B versions use DC24V. 4V has DIN entry and internal pilot; 5V has 0.5 m leads (050) and internal pilot. 4A has single/double pneumatic control, external pilot supply and no coil. 4A configurations 20008: single control has one PT1/8 pilot port, double has two; confirm pilot threads on G versions.

10006 (G: 4A/4V; PT: 5V): P/A/B/R/S 1/8; 20006 (G: 4A/4V; PT: 5V): P/A/B/R/S 1/8; 20008 (G: 4A/4V; PT: 5V): P 1/4, A/B 1/4, R/S 1/8. Ports use the assigned PT/G thread; select endpoints independently. Separate piped valve examples, not direct cylinder fittings or included parts. Operating range: 0.15–0.8 MPa, −20 to 70 °C, 40 µm filtration. Verify flow/load, pilot supply/exhaust backpressure; apply lower component limits.

PA6 nylon: 3 MPa at 23 °C, -10 to 70 °C; PA6060040100MBU: 6 × 4 mm, min. bend radius 45 mm. PA12 nylon: 2 MPa at 23 °C, -40 to 70 °C; PA12060040100MBU: 6 × 4 mm, min. bend radius 35 mm. UN54D flame-resistant tubing: 1 MPa at 23 °C, -20 to 70 °C; UN54D060040100MBU: 6 × 4 mm, min. bend radius 12 mm; UN54D080050100MBU: 8 × 5 mm, min. bend radius 18 mm; UN54D100065100MBU: 10 × 6.5 mm, min. bend radius 20 mm. All are blue 100 m coils; derate pressure above 23 °C. UN54D flame-resistant does not mean fireproof. Match exact OD, ID, tube compatibility and bend radius; PA6/PA12 sizes 8 × 5 and 10 × 6.5 mm are not established here.

M5 and 4M NAMUR have separate valve interfaces, not direct SAI mounts. No unverified direct adapter or complete kit is specified.

Circuit-Sizing Reference

Theoretical reference speed Flow-area and tube reference
300 mm/s 2 mm² effective flow area; 6 × 4 mm tube OD × ID
400 mm/s 2.6 mm² effective flow area; 6 × 4 mm tube OD × ID
500 mm/s 3.3 mm² effective flow area; 8 × 5 mm tube OD × ID
600 mm/s 3.9 mm² effective flow area; 8 × 5 mm tube OD × ID
700 mm/s 4.6 mm² effective flow area; 10 × 6.5 mm tube OD × ID
800 mm/s 5.2 mm² effective flow area; 10 × 6.5 mm tube OD × ID

Generic bore references, not measured SAI speeds. Flow area is not piston area or rated valve flow. Pressure/tube length/load are unspecified; the 0.5 MPa force example does not apply. Obey the 30–800 mm/s cylinder limit, actual valve/fitting/tube flow, cushions and exhaust backpressure. 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: SAI40BX596FANG — SAI series double-acting single-rod cylinder; 40 mm bore × 596 mm stroke; SUS304 rod (B); non-magnetic piston;... Read more

SKU: SAI40BX596FANG

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    Description

    Specifications: SAI40BX596FANG — SAI series double-acting single-rod cylinder; 40 mm bore × 596 mm stroke; SUS304 rod (B); non-magnetic piston; front flange mounting (FA); NBR seals (N); G1/4 ports (G).

    Product Catalog

    Download Airtac Product Catalog (PDF)

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

    SI to SAI replacement guide

    Model Code Explained

    Code Meaning
    SAI Standard double-acting single-rod cylinder
    40 40 mm bore
    B SUS304 stainless steel
    X Separator before stroke
    596 596 mm stroke
    No magnet suffix Without built-in magnet
    FA Front flange mounting
    N NBR seal option
    G G1/4 working ports

    Technical Specifications

    Parameter Value
    Model SAI40BX596FANG
    Action Double acting, single rod
    Bore 40 mm
    Stroke 596 mm; Special stroke; confirm order and delivery conditions
    Piston rod material SUS304 stainless steel
    Magnetic piston Without magnet
    Mounting selection Front flange mounting
    Seal option NBR
    Working ports G1/4; 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 +1.5 / -0 mm
    Cushioning Adjustable pneumatic cushion; 27 mm nominal cushion reference
    Rod diameter / end thread 16 mm / M12×1.25
    Cylinder reference weight 2807.08 g; catalog calculation, not measured shipping weight

    Reference weight = 733 + 3.48 × 596 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 755 mm = 159 + 596
    Body face span: AC + stroke 701 mm = 105 + 596
    Derived bare retracted length: A + stroke + NA 758.5 mm = 159 + 596 + 3.5
    Derived bare extended length: A + 2 × stroke + NA 1354.5 mm = 159 + 2 × 596 + 3.5
    Body cross-section 53 × 53 mm
    Base drawing symbols A=159 mm before adding the actual stroke;AB=54;AC=105 mm before adding the actual stroke;AD=32;AE=32;B=53;D=16;DA=33;E=M12×1.25;EA=24;F=17;FA=7;M=35;MA=21;H=13;K=M6;KA=17;KB=38;N=35;NA=3.5;P=G1/4;PA=17;PB=6

    Selected Mounting Dimensions

    Accessory / drawing symbols Dimension (mm) / thread
    FA — Front flange mounting; F-SI40FA A + stroke=755 = 159 + 596;C + stroke=701 = 105 + 596;BA=35.5;BB=10;BC=53;BD=36;BE=90;BF=72;BP=9;T=38

    Mounting and Rod-End Accessories

    Mounting option Part code and material
    LB — Axial foot mounting F-SI40LB; Low-carbon steel
    FA — Front flange mounting F-SI40FA; Aluminium alloy
    CA — Single rear clevis F-SE40CA; Ductile cast iron
    CB — Double rear clevis F-SE40CB; Ductile cast iron
    CR — Single clevis connection F-SI40CR; Ductile cast iron
    TC — Intermediate trunnion mounting F-SAI40TC; Ductile cast iron
    FTC — Front-cover trunnion mounting F-SI40FTC; Ductile cast iron
    TCM1 — Trunnion support type 1 F-SI40TCM1; Ductile cast iron
    TCM2 — Trunnion support type 2 F-SI40TCM2; Aluminium alloy
    FB — Rear flange mounting F-SI40FA; 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: 4–6 N·m; static holding-force reference: 1200 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-M12X125I NC=12;ND=48;NE=62;NF=24;NG=20;NH=M12×1.25;NM=12;Reference weight=127 g
    Y clevis joint — F-M12X125Y NA=25.4;NC=12;ND=48;NP=24;NQ=62;NM=12;NH=M12×1.25;PA=32.4;PB=26.2;Reference weight=175 g
    Floating joint — F-M12X125F MA=58;MB=22;MC=8;MD=21;ME=28;MF=11.5;MG=7;MH=12;MI_MJ=M12×1.25;MK=12°;Reference weight=130 g
    Spherical rod-end joint — F-M12X125U PA=12;PB=32;PC=12;PD=22;PE=50;PF=66;PG=M12×1.25;PH=13°;PI=22;PJ=19;PK=16;Reference weight=108 g

    M12×1.25 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-SAI40-R1
    NBR seal-set reference P-SAI40N-R1
    Fluororubber seal-set reference P-SAI40-R2
    Magnet-ring reference GMED22X36.6X5
    Guide-ring reference SAI40 grooved wear-resistant guide ring associated with the magnet ring
    Cover references SAI40 front cover; SAI40 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.

    Force and Application

    Parameter Value
    Extension effective area 1256 mm²; catalog rounded single-rod area
    Extension at 0.5 MPa 628 N theoretical
    Retraction effective area 1055 mm²; catalog rounded single-rod area
    Retraction at 0.5 MPa 527.5 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, 600, 700, 800 mm
    Maximum / allowable stroke 1200 / 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: GPC602,GPC602D; 8 mm OD: GPC802,GPC802D; 10 mm OD: GPC1002,GPC1002D; 12 mm OD: GPC1202,GPC1202D; 4 mm OD: GPC402-M,GPC402D-M
    GPL elbow 6 mm OD: GPL602,GPL602D; 8 mm OD: GPL802,GPL802D; 10 mm OD: GPL1002,GPL1002D; 12 mm OD: GPL1202,GPL1202D; 4 mm OD: GPL402-M,GPL402D-M
    GPLL extended elbow 4 mm OD: GPLL402,GPLL402D; 6 mm OD: GPLL602,GPLL602D; 8 mm OD: GPLL802,GPLL802D; 10 mm OD: GPLL1002,GPLL1002D; 12 mm OD: GPLL1202,GPLL1202D
    GPEB branch tee 4 mm OD: GPEB402,GPEB402D; 6 mm OD: GPEB602,GPEB602D; 8 mm OD: GPEB802,GPEB802D; 10 mm OD: GPEB1002,GPEB1002D; 12 mm OD: GPEB1202,GPEB1202D
    GPED run tee 4 mm OD: GPED402,GPED402D; 6 mm OD: GPED602,GPED602D; 8 mm OD: GPED802,GPED802D; 10 mm OD: GPED1002,GPED1002D; 12 mm OD: GPED1202,GPED1202D
    GPYB Y fitting 4 mm OD: GPYB402,GPYB402D; 6 mm OD: GPYB602,GPYB602D; 8 mm OD: GPYB802,GPYB802D; 10 mm OD: GPYB1002,GPYB1002D; 12 mm OD: GPYB1202,GPYB1202D
    GPH banjo elbow 6 mm OD: GPH602,GPH602D; 8 mm OD: GPH802,GPH802D; 10 mm OD: GPH1002,GPH1002D
    GPHF female-branch banjo 6 mm OD: GPHF602,GPHF602D; 8 mm OD: GPHF802,GPHF802D; 10 mm OD: GPHF1002,GPHF1002D
    GPHW twin banjo 6 mm OD: GPHW602,GPHW602D; 8 mm OD: GPHW802,GPHW802D; 10 mm OD: GPHW1002,GPHW1002D
    GPZB cross fitting 6 mm OD: GPZB602,GPZB602D; 8 mm OD: GPZB802,GPZB802D; 10 mm OD: GPZB1002,GPZB1002D
    GPKD reducing distributor main 8 / branch 6 mm OD: GPKD8-602,GPKD8-602D
    GBPC metal straight 4 mm OD: GBPC402; 6 mm OD: GBPC602; 8 mm OD: GBPC802; 10 mm OD: GBPC1002; 12 mm OD: GBPC1202
    GBKC compression fitting 6 × 4 mm OD × ID: GBKC0604-02; 8 × 5 mm OD × ID: GBKC0805-02; 8 × 5.5 or 6 mm OD × ID: GBKC0806-02; 10 × 6.5 mm OD × ID: GBKC1065-02; 10 × 7.5 or 8 mm OD × ID: GBKC1075-02; 12 × 8 mm OD × ID: GBKC1208-02; 12 × 9 or 10 mm OD × ID: GBKC1209-02
    GBB male–male adapter other end male G1/8: GBB0102; other end male G1/4: GBB0202; other end male G3/8: GBB0203; other end male G1/2: GBB0204
    GBD male–female adapter other end female G1/8: GBD0102
    GBZ unused auxiliary plug GBZ02
    GBSL valve-exhaust silencer GBSL02
    GBSLM miniature valve-exhaust silencer GBSLM02
    GBESL adjustable valve-exhaust silencer GBESL02
    GPSS universal flow control 6 mm OD: GPSS602A,GPSS602AD,GPSS602B,GPSS602BD; 8 mm OD: GPSS802A,GPSS802AD,GPSS802B,GPSS802BD; 10 mm OD: GPSS1002A,GPSS1002AD,GPSS1002B,GPSS1002BD
    GPTL push-lock flow control 6 mm OD: GPTL602A,GPTL602AD,GPTL602B,GPTL602BD; 8 mm OD: GPTL802A,GPTL802AD,GPTL802B,GPTL802BD; 10 mm OD: GPTL1002A,GPTL1002AD,GPTL1002B,GPTL1002BD
    GPSA tube-to-tube 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 valve-exhaust plug-in silencer 6 mm OD: PPA6; 8 mm OD: PPA8; 10 mm OD: PPA10; 12 mm OD: PPA12
    ASC separate inline flow control female G1/4: ASC20008G
    GAFR upstream filter/regulator female G1/4: GAFR20008SG,GAFR30008SG
    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
    PSA tube-to-tube flow control 4 mm OD: PSA4,PSA4D,PSA4-S,PSA4D-S; 6 mm OD: PSA6,PSA6D,PSA6-S,PSA6D-S; 8 mm OD: PSA8,PSA8D,PSA8-S,PSA8D-S; 10 mm OD: PSA10,PSA10D,PSA10-S,PSA10D-S; 12 mm OD: PSA12,PSA12D,PSA12-S,PSA12D-S

    Separate options; not an included kit or stock promise. Connect both SAI40 working ports with G1/4 fittings/correct seals; check insertion depth, tool/rotation clearance, flow and tube loads. PT/G/NPT are not interchangeable. G needs correct face seals/mating surfaces. The M12×1.25 rod thread is not an air port.

    Use suitable soft nylon/PU; match exact OD and compression-fitting ID. Where offered: D black, blank grey, -M miniature; -S specified stainless-304 parts, not an all-stainless cylinder/circuit. GPHF has male RA/extra female RB of G1/4; connect or permissibly seal RB, not a tube socket. Tees/Y/cross/distributors must not bridge chambers or unrelated controls.

    Standard push-in fittings, direct/threadless controls and listed silencers: 0–1 MPa, −20–70 °C. GBPC: 0–0.9 MPa, 0–150 °C; SAI pressure path 0.15–0.9 MPa. GBKC/GBB/GBD/GBZ: 0–1 MPa, 0–150 °C; SAI pressure path 0.15–1 MPa. General cylinder −20–70 °C with 0–150 °C parts gives 0–70 °C or narrower. Apply lower valve/tube/sensor limits; component vacuum data do not rate a vacuum cylinder.

    Install threads using the body hex, not locking nut; fully insert tube before tightening. GBKC0806-02 accepts 8 × 5.5 or 8 × 6 mm; 8 × 5 mm needs GBKC0805-02. GBB/GBD are same-standard adapters: BB male–male, BD male–female; table labels the other end. Match gender/size/flow; no cross-thread conversion. GBZ closes permitted unused auxiliary ports only, 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 action; B needs a designed meter-in circuit. Start closed/open slowly. Closed leakage is allowed: not safety shutoffs. GPTL caps on 1/4-port variants: adjustment reference: 0.16 N·m, not pipe-thread torque. Do not force caps/end stops. PSA/PSA-S/GPSA are metric tube-to-tube controls without A/B suffixes; match both ODs/check-throttle symbol. GPSA does not mean G thread.

    Listed silencers serve separate valve exhaust: match thread/flow/backpressure. Not cylinder-port fittings, inlet filters or shutoffs. GBESL adjustment changes backpressure. PPA6/8/10/12 have plain metric stems for matching sockets: POM body/cap, PE filter, 0–1 MPa, −20–70 °C; 25 dB at 0.5 MPa is a catalog test, not a site-noise promise. PPA has no D or thread suffix. GBSL catalog test: 13 dB at 0.5 MPa; do not apply PT noise figures to G variants.

    ASC20008G: separate two-female-G1/4-port inline control; needs male fittings. Follow P/A/check-throttle symbol. 0.05–0.95 MPa, −20–70 °C and 40 µm-or-finer filtered air; SAI pressure path 0.15–0.95 MPa before lower limits. Rated flow is not guaranteed cylinder speed.

    GAFR20008SG,GAFR30008SG: separate upstream G1/4 filter/regulator: 40 µm, PC bowl, differential/manual drain, bracket/round gauge, no reverse-flow valve. Inlet ≤1 MPa, setting 0.15–0.9 MPa, −5–70 °C non-freezing. Respect IN/OUT, flow/pressure loss, condensate, bowl environment and downstream limits. Not cylinder-mounted or a vacuum regulator.

    US98A/UE95A examples: blue 100 m coils, not included cut lengths; 1 MPa at 23 °C with temperature derating: US98A −20–70 °C, UE95A −40–70 °C. Match OD/ID, bend radius, routing and flow; thinner low-pressure tubes are not equivalent. Only listed sizing diameters have the reference-speed association.

    Separate Directional-Valve and Tube Examples

    4A G: single control 4A11006G, 4A21006G, 4A21008G; double control 4A12006G, 4A22006G, 4A22008G. 4V G: single control 4V11006BG, 4V21006BG, 4V21008BG; double control 4V12006BG, 4V22006BG, 4V22008BG. 5V PT: single control 5V11006B050, 5V21006B050, 5V21008B050; double control 5V12006B050, 5V22006B050, 5V22008B050. All listed B versions use DC24V. 4V has DIN entry and internal pilot; 5V has 0.5 m leads (050) and internal pilot. 4A has single/double pneumatic control, external pilot supply and no coil. 4A configurations 20008: single control has one PT1/8 pilot port, double has two; confirm pilot threads on G versions.

    10006 (G: 4A/4V; PT: 5V): P/A/B/R/S 1/8; 20006 (G: 4A/4V; PT: 5V): P/A/B/R/S 1/8; 20008 (G: 4A/4V; PT: 5V): P 1/4, A/B 1/4, R/S 1/8. Ports use the assigned PT/G thread; select endpoints independently. Separate piped valve examples, not direct cylinder fittings or included parts. Operating range: 0.15–0.8 MPa, −20 to 70 °C, 40 µm filtration. Verify flow/load, pilot supply/exhaust backpressure; apply lower component limits.

    PA6 nylon: 3 MPa at 23 °C, -10 to 70 °C; PA6060040100MBU: 6 × 4 mm, min. bend radius 45 mm. PA12 nylon: 2 MPa at 23 °C, -40 to 70 °C; PA12060040100MBU: 6 × 4 mm, min. bend radius 35 mm. UN54D flame-resistant tubing: 1 MPa at 23 °C, -20 to 70 °C; UN54D060040100MBU: 6 × 4 mm, min. bend radius 12 mm; UN54D080050100MBU: 8 × 5 mm, min. bend radius 18 mm; UN54D100065100MBU: 10 × 6.5 mm, min. bend radius 20 mm. All are blue 100 m coils; derate pressure above 23 °C. UN54D flame-resistant does not mean fireproof. Match exact OD, ID, tube compatibility and bend radius; PA6/PA12 sizes 8 × 5 and 10 × 6.5 mm are not established here.

    M5 and 4M NAMUR have separate valve interfaces, not direct SAI mounts. No unverified direct adapter or complete kit is specified.

    Circuit-Sizing Reference

    Theoretical reference speed Flow-area and tube reference
    300 mm/s 2 mm² effective flow area; 6 × 4 mm tube OD × ID
    400 mm/s 2.6 mm² effective flow area; 6 × 4 mm tube OD × ID
    500 mm/s 3.3 mm² effective flow area; 8 × 5 mm tube OD × ID
    600 mm/s 3.9 mm² effective flow area; 8 × 5 mm tube OD × ID
    700 mm/s 4.6 mm² effective flow area; 10 × 6.5 mm tube OD × ID
    800 mm/s 5.2 mm² effective flow area; 10 × 6.5 mm tube OD × ID

    Generic bore references, not measured SAI speeds. Flow area is not piston area or rated valve flow. Pressure/tube length/load are unspecified; the 0.5 MPa force example does not apply. Obey the 30–800 mm/s cylinder limit, actual valve/fitting/tube flow, cushions and exhaust backpressure. 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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