The AirTAC AirTAC SDA40X55 Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 55mm 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 SDA40X55 is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston and rod into an ultra-short unit, drastically reducing axial mounting depth compared to conventional round-body designs. This specific configuration features a 16 mm piston rod and a female M8x1.25 rod-end thread, operating on a PT1/8 port.
This model relies on a fixed NBR bumper at each end to decelerate the stroke, meaning it is not an adjustable air cushion. Without the -S option, this SKU lacks a piston magnet and cannot accept AirTAC reed or electronic switches. For high kinetic energy applications, slowing the approach speed or adding an external shock absorber is advised.
| Model | AirTAC SDA40X55 Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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. |
| ×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 routing gates on packaging lines to push cartons between belt segments, utilizing the 55 mm stroke to clear the conveyor lane efficiently.
Drives small bronze bushings into aluminum housings on an assembly fixture, applying steady 628.3 N force at 0.5 MPa without over-stressing the part.
Secures printed circuit boards during automated wave soldering, gripping the edges gently while maintaining a low-profile footprint inside the machinery.
When sizing this 40 mm bore, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. Based on the 628.3 N output at 0.5 MPa, a safe working load is roughly 377 N (about 60 percent capacity), translating to a vertical lift of approximately 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 55 mm stroke, PT1/8 port, female rod thread, and no sensor magnet.
Remember that a standard SDA body does not hold its position if air pressure drops or the valve is centered. The piston will drift, and the fixed bumper only decelerates near the stroke end rather than locking the load. If your application requires strict position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa this cylinder provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
No, this specific SKU lacks the internal piston magnet, so it cannot trigger AirTAC reed or electronic switches. You must order the -S variant to enable sensing. Additionally, it uses fixed NBR bumpers rather than adjustable air cushions to decelerate the stroke end.
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.