Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B
The AirTAC Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B is a genuine single acting, pull (spring return) ISO 21287 compact air cylinder with a Ø25mm bore and 20mm stroke, M5×0.8 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.
- BoreØ25 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeSingle acting, pull (spring return)
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
About the Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B
This AirTAC ATE25X20B is a single acting pull cylinder with a spring return, meaning the spring extends the rod and air retracts it. With a 25 mm bore, it delivers 170.9 N of pull at 0.5 MPa, net of the return spring, making it suitable for light clamping or lifting tasks.
The ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, saving valuable space in tight fixtures. The optional -S magnet is not fitted here, so no sensor can be mounted without ordering that code. For a safe working load, plan for about 103 N (0.6 x 170.9 N) of real work at 0.5 MPa, which translates to lifting about 10.5 kg vertically with a 2:1 safety margin.
Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B Technical Specifications
| Model | Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B |
|---|---|
| Series | ATE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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.
Theoretical Output Force (Ø25mm)
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 170.9 N |
| 0.7 MPa | 253.3 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).
Model Code: Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B
| ATE | ISO 21287 compact cylinder (single-acting pull, spring-return). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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.
Where the Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B Is Used
Fixture Clamping
Use in a jig to clamp small parts during drilling or light milling, where the spring-extend action holds the part and air retracts the clamp for removal.
Label Applicator
In a packaging line, this cylinder can pull a label applicator head back after each cycle, with the spring returning it to the ready position for the next part.
Small Gate Operator
Operate a small safety gate on a machine guard, where the spring keeps the gate closed and air pulls it open, ensuring fail-safe closure on power loss.
Is the Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B the Right Cylinder?
For a smaller option, the ATE20X25B offers 88.1 N pull at 0.5 MPa, while the ATE32X25B provides 296.0 N pull, both net of spring. Choose this 25 mm bore when you need moderate pull force in a compact envelope. The male rod thread (B code) simplifies mounting with rod-end accessories. Since this model lacks the -S magnet, it cannot accept CMSE or DMSE switches; order the -S variant if sensor feedback is needed. The spring extends the rod at rest and on air loss, so it does not hold a mid-stroke position.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.2 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Single-acting: do not force the rod against the spring.
- check Installation by qualified personnel per AirTAC docs.
Airtac ATE Single Acting Guided Compact Cylinder ATE25X20B FAQ
The ATE25X20B provides 170.9 N pull at 0.5 MPa and 253.3 N pull at 0.7 MPa, both net of the return spring. Minimum working pressure is 0.2 MPa to overcome the spring, and the proof pressure is 1.5 MPa (215 psi).
No, this model (without the -S code) has no magnet, so CMSE or DMSE switches cannot be mounted. To use sensors, you must order the ATE25X20SB variant with the optional -S magnet. The fixed TPU bumper at both ends absorbs end-of-stroke impact but is not adjustable.
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