Airtac ATE Single Acting Guided Compact Cylinder ATE25X20SB
The AirTAC Airtac ATE Single Acting Guided Compact Cylinder ATE25X20SB 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 ATE25X20SB
This AirTAC ATE25X20SB is a single acting pull cylinder with spring return, so the spring extends the rod and air retracts it. At 0.5 MPa it delivers a net pull of 170.9 N, and at 0.7 MPa that rises to 253.3 N, with the spring force already subtracted.
The ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, which helps it fit into tight machine guards and gantries. The optional -S magnet is fitted here, so CMSE or DMSE switches can be mounted for position sensing. For a safe working load, plan for about 102 N (roughly 10 kg) of real work at 0.5 MPa, not the full rating.
Airtac ATE Single Acting Guided Compact Cylinder ATE25X20SB Technical Specifications
| Model | Airtac ATE Single Acting Guided Compact Cylinder ATE25X20SB |
|---|---|
| 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 ATE25X20SB
| 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 ATE25X20SB Is Used
Jig Clamping
Use the 170.9 N pull at 0.5 MPa to retract a clamp pin in a CNC fixture, with the spring extending it for part loading. The compact body fits under a workholding plate.
Gate Diverter
Retract a small diverter flap on a packaging conveyor to redirect lightweight cartons. The 20 mm stroke is enough for a quick changeover, and the TPU bumper absorbs end-of-stroke impact.
Guard Interlock
Pull a safety latch on a machine guard open with air, letting the spring close it when power is lost. The fail-to-extended behavior suits a normally closed guard position.
Is the Airtac ATE Single Acting Guided Compact Cylinder ATE25X20SB the Right Cylinder?
For a lighter pull, the ATE20X25 offers 88.1 N at 0.5 MPa, while the ATE32X25 steps up to 296.0 N. This 25 mm bore model suits applications needing a compact, spring-extend pull action with a 20 mm stroke. Since it is single acting, the spring returns the rod to its extended position on air loss; it does not hold a mid-stroke position. Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets, and the male rod thread (B) simplifies attachment.
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 ATE25X20SB FAQ
At 0.5 MPa the net pull is 170.9 N, and at 0.7 MPa it is 253.3 N, both after subtracting the return spring force. The minimum working pressure is 0.2 MPa, and the proof pressure is 1.5 MPa (215 psi).
The ATE25X20SB body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into machine guards and gantries where a full-length cylinder would not. The fixed TPU bumper at both ends decelerates the rod at stroke limits, and the optional -S magnet allows CMSE or DMSE switches.
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