The AirTAC AirTAC SDA40X25SBH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 25mm 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 SDA40X25SBH is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, and piston into a highly shortened unit, drastically reducing axial mounting depth where a conventional round-body actuator would be too bulky. This specific configuration includes a male M14x1.5 piston rod end, an integrated magnet for position sensing, and high-temperature fluororubber (FKM) seals.
The 40 mm bore utilizes a PT1/8 air port and a 16 mm piston rod to handle a safe working load of roughly 377 N, which translates to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Instead of an adjustable air cushion, the internal stroke ends are protected by a fixed NBR bumper that decelerates the piston near travel limits. For high-energy cycles, operators should add an external shock absorber or slow the approach speed.
| Model | AirTAC SDA40X25SBH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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. |
| ×25 | 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 workpieces in a CNC machining center, utilizing the 628.3 N extend force to hold parts rigidly against cutting forces without exceeding footprint limits.
Drives the upper platen on a thermal sealing press, where the FKM seals withstand elevated ambient heat and the short 25 mm stroke delivers rapid cycling.
Actuates a routing flap on a parcel handling line, using the integrated magnet to trigger electronic switches for confirming package diversion.
When sizing this model, 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, allowing you to tune the actuator precisely to your load. Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the end of the stroke rather than locking it. If your application requires absolute position holding, you must integrate an external rod lock or a pilot-operated check valve. To order, confirm the 40 mm bore, 25 mm stroke, PT1/8 port, male M14x1.5 rod thread (-B), magnet (-S), and FKM seal (-H).
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa. 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.
It relies on a fixed NBR bumper at each end to decelerate the piston. This is not an adjustable air cushion, so for high-speed or high-energy loads, you should slow the approach or install an external shock absorber.
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.