
The AirTAC Airtac ATE Single Acting Guided Compact Cylinder ATE40X25 is a genuine single acting, pull (spring return) ISO 21287 compact air cylinder with a Ø40mm bore and 25mm stroke, 1/8" air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
This ATE40X25 is a single acting pull cylinder, spring-extend type, from AirTAC's ISO 21287 compact line. With a 40 mm bore and 25 mm stroke, it delivers 500.3 N of pull at 0.5 MPa, net of the return spring, so you can plan real work around that figure. The short body takes up about half the mounting length of an ISO 15552 profile cylinder, making it a strong fit for tight machine guards and compact gantries.
The body is hard-anodized aluminium with an S45C hard-chrome rod, and a fixed TPU bumper at each end absorbs stop energy. A practical rule: at 0.5 MPa, plan for about 300 N of safe working load, which translates to lifting roughly 30 kg vertically with a 2:1 margin. The optional -S magnet is not fitted here, so no CMSE or DMSE sensor can be mounted unless you order that code.
| Model | Airtac ATE Single Acting Guided Compact Cylinder ATE40X25 |
|---|---|
| Series | ATE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 25 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 500.3 N |
| 0.7 MPa | 729.0 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa. Single-acting strokes are short (Ø12 to 10 mm, Ø16-100 to 25 mm).
| ATE | ISO 21287 compact cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
In a CNC fixture, use the ATE40X25 to pull a clamp arm down onto a workpiece. The 500.3 N pull at 0.5 MPa secures parts during drilling, and the compact body fits under the spindle guard.
Mount it on a small parts bin to retract a latch that releases a tilt mechanism. The spring extend keeps the latch closed at rest, and air pull opens it for access, saving floor space in a kitting station.
On a shrink-wrap line, the cylinder pulls a dancer roller to maintain film tension. The 729 N pull at 0.7 MPa handles light film rolls, and the short stroke suits the limited travel needed.
For a lighter pull, the ATE32X25 offers 296.0 N at 0.5 MPa, while stepping up to the ATE50X25 gives 775.0 N at the same pressure. Since this is single acting pull, the spring extends the rod at rest and air retracts it; it does not hold a mid-stroke position on air loss. Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets, all matching the ISO 21287 face. The female rod thread is M8x1.25, and the port is 1/8" PT.
Quick checklist
The ATE40X25 delivers 500.3 N pull at 0.5 MPa and 729 N pull at 0.7 MPa, both net of the return spring. Minimum working pressure is 0.2 MPa, operating range is 0.2-1.0 MPa (28-145 psi), and proof pressure is 1.5 MPa (215 psi). Speed range is 50-500 mm/s, and the port is 1/8" PT.
The ATE40X25's short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into machine guards and gantries where a full-length cylinder won't. It has a fixed TPU bumper at both ends to absorb stop energy, and mounting brackets like FA/FB flange, LB foot, and CA/CB clevis bolt directly to the ISO 21287 face. The optional -S magnet is required for CMSE or DMSE sensors.
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