The AirTAC SDA50X20SB Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 20mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA50X20SB is a double-acting, single-rod compact cylinder engineered to deliver 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. Its riveted assembly significantly shortens the axial footprint compared to conventional round-body units, making it highly effective for machinery where mounting depth is strictly limited. The unit includes a built-in piston magnet for position sensing and a male-thread M18x1.5 rod end for secure load coupling.
The 50 mm bore features a hard-anodized inner wall and operates on filtered air at 30-500 mm/s. Instead of an adjustable air cushion, it relies on a fixed NBR bumper at each end to decelerate the piston near the stroke limits. Grooves around the body accept AirTAC reed or electronic switches, enabling precise end-of-stroke detection without adding external bulk.
| Model | AirTAC SDA50X20SB Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Secures heavy cast iron engine blocks during machining operations, utilizing the 981.7 N extend force and the male M18x1.5 thread for rigid fixture attachment.
Drives short 20 mm folding strokes on high-speed corrugated box lines, where the compact riveted body minimizes frame interference and the built-in magnet confirms flap position.
Acts as a robust mechanical stop to index loaded pallets on a conveyor, handling the 50 kg vertical load capacity safely while fitting into tight conveyor stringer gaps.
This 50 mm bore generates 981.7 N push at 0.5 MPa, sitting between the SDA40 at 628.3 N and the SDA63 at 1558.6 N. When ordering, confirm the 20 mm stroke, PT1/4 port, the -S magnet requirement, and the -B male M18x1.5 rod thread. Keep in mind that a standard compact cylinder drifts if air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a lock. For suspended loads that must hold position without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 981.7 N and the pull force is 824.7 N. At 0.7 MPa, push is 1374.4 N and pull is 1154.5 N. The theoretical maximum push is 200 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the speed range is 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion or a braking lock; for high-energy cycles, slow the approach or add external shock absorbers. Because this model includes the -S magnet, you can mount AirTAC reed or electronic switches directly into the body grooves for solid-state position detection.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.