The AirTAC AirTAC SDA40X75B Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 75mm 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 SDA40X75B 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 to drastically reduce axial mounting depth, making it ideal for machinery where a standard round-body unit would protrude too far. The internal bore is hard-anodized and uses a two-way piston seal for longevity.
This specific SKU includes the -B option, meaning it features a male M14x1.5 threaded piston rod end for secure mechanical coupling to your load, rather than the default female M8x1.25 thread. The 40 mm bore utilizes a PT1/8 air port. Because this model lacks the -S magnet code, it cannot directly host AirTAC reed or electronic switches in the body grooves. End-stopping relies on a fixed NBR bumper that decelerates the piston near stroke end, which is not an adjustable air cushion.
| Model | AirTAC SDA40X75B Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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 housings inside machining centers. The 75 mm stroke provides ample reach to clear the work envelope, while the 628.3 N push force firmly locks the part against locators.
Drives mechanical arms to tuck top flaps on case packers. The short riveted body minimizes interference in tight overhead packaging frames, operating smoothly at speeds up to 500 mm/s.
Actuates routing gates on conveyor lines to sort heavy wooden pallets. The male M14x1.5 rod end threads directly into heavy-duty linkage brackets for reliable load transfer.
When sizing this 40 mm bore actuator, 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 at the same pressure. For the SDA40X75B, the 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (using a 60% design margin) or a vertical lift capacity of about 32 kg with a 2:1 safety factor. Ensure your flow rates can support the 30-500 mm/s speed range.
This unit ships with a male M14x1.5 piston rod and PT1/8 ports. Note that a plain double-acting cylinder drifts when air pressure is lost or the valve is centered; the fixed NBR bumper only slows the piston near the end of travel and does not function as a locking brake. If your application demands position holding on air loss, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and operating temperature from -20 to +70 C.
No, this model uses a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. For high kinetic energy loads, add an external shock absorber. Additionally, this specific SKU lacks a piston magnet, so it cannot support magnetic switches; you would need the SDA40X75BS variant to utilize reed or electronic sensing.
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.