The AirTAC SDA50X55BH Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 55mm 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 SDA50X55BH is a double-acting single-rod compact cylinder engineered with a 50 mm bore and 55 mm stroke. It generates 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. The riveted body design minimizes axial mounting depth, providing a distinct footprint advantage in tight machinery compared to standard round-body units. This specific SKU includes a male M18x1.5 threaded piston rod for direct load coupling.
Equipped with fluororubber (FKM) seals, the -H variant targets environments requiring enhanced thermal or oil resistance. The bore features a hard-anodized inner wall and a two-way piston seal. Deceleration at stroke ends relies on a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or add external shock absorbers for high-energy loads.
| Model | AirTAC SDA50X55BH Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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. |
| ×55 | 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).
Actuates a film gripper arm on a pallet wrapping machine, utilizing the 981.7 N push force to secure stretch wrap tightly against heavy pallet loads.
Indexes sheet metal blanks into the correct backgauge position on a CNC press brake, where the short 55 mm stroke and compact body fit neatly behind the die.
Drives a routing flap on a high-speed beverage bottling conveyor to sort containers into parallel lanes without requiring a long profile cylinder.
When sizing this actuator, stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while stepping up to the SDA63 provides 1558.6 N. Confirm your ordering essentials: 50 mm bore, 55 mm stroke, PT1/4 port, male M18x1.5 rod thread, and FKM seals. Note that this configuration lacks a piston magnet, so position sensing is not supported without the -S option.
Because this is a double-acting cylinder, it will not hold a load if air pressure drops or the valve is centered—the piston will drift. The fixed NBR bumper only decelerates the stroke near the end points and does not function as a mechanical lock. If your application requires position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 50 mm bore double-acting cylinder provides a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. At 0.7 MPa, the push force is 1374.4 N. The theoretical maximum push force is 200 kgf at 1.0 MPa. It operates on filtered air at 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot support AirTAC reed or electronic switches. You would need to specify the -S option to add a magnet for sensing. Additionally, it uses a fixed NBR bumper for end-stop deceleration rather than an adjustable air cushion.
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