Specifications: SDA50X30 is an AirTAC double-acting cylinder with a 50 mm bore, 30 mm stroke, no magnetic option in the standard suffix position, and female-threaded rod end.
Product Catalog
Download Airtac Product Catalog (PDF)
Download 2022 cylinder installation and weight tables (PDF)
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
Model Code Explained
| Code |
Meaning for This Model |
| SDA |
double-acting cylinder |
| 50 |
50 mm bore |
| X30 |
30 mm nominal stroke |
| Blank magnetic position |
No magnetic piston selected by the standard order-code position |
| Blank rod-end position |
female-threaded rod end |
| Blank mounting suffix |
No optional mounting bracket selected |
| Blank pipe-thread suffix |
Metric connection at the small bores; PT is the standard pipe-thread option where a pipe port is used |
Technical Specifications
| Parameter |
Details |
| Action |
double-acting cylinder |
| Working medium |
Air filtered through a 40 μm filter or finer |
| Operating pressure |
0.15–1 MPa |
| Proof pressure |
1.5 MPa; a proof-test rating, not the continuous operating limit |
| Ambient and fluid temperature |
−20 to 70 °C |
| Piston speed |
30–500 mm/s |
| Stroke tolerance |
+1.0 / 0 mm up to 100 mm stroke; +1.5 / 0 mm above 100 mm |
| Cushioning |
Bumper |
| Air connection |
PT 1/4 |
Product Features
- The body/rear-cover and piston/rod connections use a compact riveted construction.
- The rolled and hard-anodized bore provides wear resistance.
- The compact double-lip piston seal retains lubricant; switch grooves run around the body.
Dimensions for This Bore and Configuration
Dimensions are in millimeters unless a thread, angle or tolerance is stated. Letter labels follow the 148–153 printed-page drawings in the 2022 Chinese catalog. A base letter value is not automatically an overall length; use its stated stroke relationship.
| Parameter |
Details |
| A |
37 mm |
| AC |
28 mm |
| AB |
9 mm |
| B |
62 mm |
| BA |
71.5 mm |
| D |
20 mm |
| DA |
5 mm |
| E |
M10 × 1.5 |
| EA |
15 mm |
| H |
17 mm |
| J |
10.5 mm |
| JA |
6.5 mm |
| K |
M8 × 1.25 |
| KA |
25 mm |
| KB |
48 mm |
| M |
38 mm |
| MA |
4 mm |
| P |
PT1/4 |
| PA |
10.5 mm |
| PB |
10.5 mm |
| T |
Not listed for this size |
| Through-hole diameter |
6.7 mm |
Stroke-dependent Drawing Relationships
| Parameter |
Details |
| A outline |
A + stroke |
| AC outline |
AC + stroke |
| Stroke used in the order code |
30 mm |
Construction and Materials
| Parameter |
Details |
| 1 Rear cover |
Aluminum alloy |
| 2 Bumper |
NBR |
| 3 Piston |
Aluminum alloy |
| 4 Piston seal |
NBR |
| 5 Piston rod |
Hard-chrome-plated S45C steel |
| 6 Body |
Aluminum alloy |
| 7 Front cover |
Aluminum alloy |
| 8 O-ring |
NBR |
| 9 C-ring |
Spring steel |
| 10 Rod seal |
NBR |
| 11 Hex nut |
Carbon steel |
| 12 Bushing |
Wear-resistant material |
Item numbers identify the catalog sectional drawing. They are component references, not spare-part order codes or package quantities.
Matching Accessories and Mounting
| Parameter |
Details |
| Cylinder mounting |
Use the mounting holes and dimensions shown for this body and action type. No unrelated compact-cylinder bracket is established as interchangeable by this chapter. |
| Magnetic switch condition |
This code does not select a magnetic piston. A magnetic switch cannot provide piston-position sensing on a non-magnetic cylinder. |
Accessory codes are listed for selection. Optional brackets, rod joints and switches are separate items unless the selected code or the stated pin note expressly identifies them. Component item numbers do not specify purchase quantities.
Stroke and Option Selection
| Parameter |
Details |
| Standard strokes for this bore/action |
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 100, 110, 120, 130 mm |
| Intermediate strokes |
The catalog allows a nonstandard intermediate stroke with the outer dimensions of the next larger standard stroke; this does not extend the maximum allowable stroke. |
| Magnetic selection |
Select the magnetic option before ordering a position switch; electrical type, cable and connector are selected separately. |
Selection, Installation and Operation
- Select bore from the required thrust and available pressure; then check stroke, load direction, mounting, cushioning and sensing. The general catalog load-factor references are at most 0.7 for static/slow work and at most 0.5 for 50–500 mm/s motion. They do not replace the load and guide checks for this cylinder.
- Keep the piston rod and load aligned. Support lateral or eccentric loads with an appropriate guide; avoid applying bending force or tightening torque through the rod or guide.
- Use clean filtered air. Prevent freezing, water, dust and corrosive substances from entering the cylinder. The cylinder is prelubricated; if lubrication is introduced, use additive-free ISO VG32 oil and continue that lubrication.
- Start with the speed controller restricted, then open it gradually. Choose the circuit and flow-control direction for the action and load; a double-acting meter-out circuit is a general reference, not a guarantee of equal speed or precise stopping.
- Isolate the air and electrical supplies and release trapped pressure before maintenance. Check the mounting and retained parts before repressurizing. A C-ring must be fully seated before operation.
Circuit Selection Reference at 500 mm/s
| Parameter |
Details |
| Reference bore |
50 mm |
| Effective flow area at the reference speed |
5.1 mm² |
| Tube outside / inside diameter |
10 / 6.5 mm |
| Example speed controller |
PTL02 |
| Example silencer |
BSL02 |
| Example solenoid valves |
5V21008 / 5V22008 |
| Example air-piloted valves |
4A21008 / 4A22008 |
The general 2022 selection table gives these circuit examples for this bore at a theoretical 500 mm/s reference speed. They are not included accessories, a guaranteed achieved speed, or a statement that every example screws directly into this cylinder. Match the actual port thread, action, tubing, valve capacity and operating conditions.
Optional air connections, tubing and controls
For the 10 mm OD tubing in the circuit reference in this description, choose either a straight fitting or an A-type controller at each cylinder port. Match the separate valve work and pilot ends as listed, keep the two chamber lines separate, and order options separately.
-
PC1002: PT1/4 male × 10 mm tube OD
Straight cylinder-port connection; no speed adjustment; also connects the selected valve A/B work ports
-
PTL1002A: PT1/4 male × 10 mm tube OD; A-type
Alternative cylinder-port meter-out speed controller for the same tube OD
-
PC1001: PT1/8 male × 10 mm tube OD
Only for the separate 4A air-pilot port when its pilot line uses 10 mm OD tubing
-
US98A100065100MBU: polyester polyurethane; 10 mm OD × 6.5 mm ID; blue, 100 m roll
Optional straight tubing example; cut to the required installed length
-
UE95A100065100MBU: polyether polyurethane; 10 mm OD × 6.5 mm ID; blue, 100 m roll
Optional straight tubing example; cut to the required installed length
-
5V21008A050, 5V21008A200, 5V22008A050, 5V22008A200: PT1/4 female main ports; PT1/8 female exhaust ports; terminal-cable version
220 V AC solenoid direction control for extension and retraction
-
5V21008B050, 5V21008B200, 5V22008B050, 5V22008B200: PT1/4 female main ports; PT1/8 female exhaust ports; terminal-cable version
24 V DC solenoid direction control for extension and retraction
-
5V21008C050, 5V21008C200, 5V22008C050, 5V22008C200: PT1/4 female main ports; PT1/8 female exhaust ports; terminal-cable version
110 V AC solenoid direction control for extension and retraction
-
5V21008E050, 5V21008E200, 5V22008E050, 5V22008E200: PT1/4 female main ports; PT1/8 female exhaust ports; terminal-cable version
24 V AC solenoid direction control for extension and retraction
-
5V21008F050, 5V21008F200, 5V22008F050, 5V22008F200: PT1/4 female main ports; PT1/8 female exhaust ports; terminal-cable version
12 V DC solenoid direction control for extension and retraction
-
BSL01: PT1/8 male
Silencer at the selected 5V200 or 4A200 valve exhaust ports R/S
The A-type controller restricts flow from the cylinder port toward the tube; reverse flow is free. Recommended cap-rotation torque is 0.16 N·m, not thread-tightening torque. Seal tapered PT connections correctly.
The listed gray fittings and controllers accept soft nylon or polyurethane tubing and are rated for 0–1 MPa and −20 to +70°C. Check tube insertion, wrench clearance and every connected part’s limits.
Choose the valve voltage and control action for your circuit. The 5V210 codes are single-solenoid spring-return valves; 5V220 codes are double-solenoid valves with memory. The final 050 or 200 selects a 0.5 m or 2 m terminal cable as part of the complete valve configuration. AC versions use 2.0 VA with +15%/−10% voltage tolerance; DC versions use 1.6 W with ±10% tolerance. These terminal-cable valves have dust protection; they are not DIN-plug versions.
The existing 4A21008 and 4A22008 pneumatic alternatives need one or two external pilot signals respectively through separate PT1/8 pilot ports. The listed pilot connection assumes 10 mm OD pilot tubing; match both ends of the pilot line and the actual control signal. Seal the tapered PT pilot threads with suitable thread sealant. Use only the chosen electrical or pneumatic control scheme.
With either listed valve family, the working circuit is limited to 0.15–0.8 MPa and −20 to +70°C, subject to any lower component limit. These choices do not guarantee a particular cylinder speed; verify flow, pressure loss and the load.
For these selected valves, the actual exhaust ports R/S are PT1/8; use BSL01. The BSL02 in the general circuit reference has a different thread and is not a direct fit to these exhaust ports. Keep exhaust paths open and do not fit silencers to the cylinder working ports. Silencer limits are 0–1 MPa and −20 to +70°C.
The blue 100 m tube codes are purchasable packaging examples, not the required installed tube length. US98A is polyester polyurethane (−20 to +70°C); UE95A is polyether polyurethane (−40 to +70°C). Both listed standard sizes are rated to 1 MPa at 23°C; apply temperature derating and the lowest limit of the whole circuit. Avoid solvents, corrosive media and prolonged direct sunlight.
Minimum bend radii for the listed US98A/UE95A tube are 25/20 mm. Check the actual route and tube length before ordering.
Weight Reference
Catalog reference weight: 489 g. Calculated from the catalog base weight and stroke increment for this bore/configuration; it is a reference, not a measured weight.
For detailed product dimensions and mounting drawings, please download and refer to the PDF catalog.
