The AirTAC AirTAC SDA40X50BH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 50mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X50BH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 50 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The riveted unibody design significantly reduces axial mounting depth compared to round-body alternatives, making it highly effective for machinery where spatial footprint is restricted. This specific SKU includes an FKM fluororubber seal for enhanced thermal and oil resistance.
Equipped with a male M14x1.5 threaded piston rod (overriding the default female M8x1.25), it provides a robust mechanical coupling for your load. The unit relies on a fixed NBR bumper at each end to decelerate the stroke, meaning it is not an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot support magnetic reed or electronic switches.
| Model | AirTAC SDA40X50BH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 aluminum engine blocks during CNC machining, utilizing the 628.3 N extend force and FKM seals to withstand cutting fluid exposure.
Pushes formed plastic bottles out of a continuous molding line, where the male M14x1.5 rod end firmly attaches to the custom ejection fork.
Actuates a routing gate on a 50 mm stroke to redirect heavy timber pallets, taking advantage of the short riveted body to fit within tight conveyor framing.
When sizing this actuator, stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. For this 40 mm bore, the safe working load is approximately 377 N (60% of the 0.5 MPa rating), translating to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Ensure your ordering essentials match the 40 mm bore, 50 mm stroke, PT1/8 port, male M14x1.5 rod thread, and FKM seals. Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates near the stroke end and does not function as a lock. To maintain vertical position holding, an external rod lock or pilot-operated check valve is required.
Quick checklist
This double-acting cylinder delivers 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
No. This model uses fixed NBR bumpers to decelerate at the stroke ends, which cannot be field-adjusted like an air cushion; for high energy cycles, slow the approach or add external shock absorbers. Additionally, this SKU lacks the -S piston magnet, so it cannot trigger AirTAC reed or electronic switches.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 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.