Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB
The AirTAC Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB 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.
- BoreØ40 mm
- Stroke25 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM8×1.25
- CushionFixed TPU bumper (both ends)
About the Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB
This ATE40X25SB is a single acting pull cylinder with a spring that extends the rod and air that retracts it, delivering a net pull of 500.3 N at 0.5 MPa and 729 N at 0.7 MPa. Its ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, making it a fit for tight machine guarding and gantry tooling where space is at a premium.
The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in continuous cycling, while the fixed TPU bumper absorbs end-of-stroke impact. With the optional -S magnet fitted, this unit works with CMSE or DMSE switches for position sensing. For a real-world load, plan on lifting about 31 kg vertically at 0.5 MPa with a 2:1 safety margin, since the full 500 N rating is not for continuous work.
Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB Technical Specifications
| Model | Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB |
|---|---|
| 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.
Theoretical Output Force (Ø40mm)
| 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).
Model Code: Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB
| 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.
Where the Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB Is Used
Jig Clamp Retract
In a CNC machining fixture, this cylinder pulls a locating pin out of a bore after the part is clamped. The 500.3 N pull at 0.5 MPa clears the pin reliably, while the short body fits under the fixture table where a longer cylinder would not.
Gate Release
On a packaging conveyor, this unit retracts a stop gate to let a carton pass. The spring extends the gate to block the next item when air is off, providing a fail-safe that keeps products in place during a pressure drop. The 25 mm stroke is enough to clear the product path.
Guard Door Latch
For a robotic cell safety gate, this cylinder pulls a latch bolt to unlock the door. The 729 N pull at 0.7 MPa overcomes the latch friction, and the compact body mounts inside the aluminum framing. The fixed TPU bumper prevents hard end-stop noise during high-speed cycling.
Is the Airtac ATE Single Acting Guided Compact Cylinder ATE40X25SB the Right Cylinder?
Choose this 40 mm bore when you need a net pull of 500.3 N at 0.5 MPa in a short-stroke package. If your application is lighter, the 32 mm bore offers 296 N at the same pressure, while stepping up to the 50 mm bore provides 775 N for heavier retracts. Remember that this is a spring-extend cylinder, so it returns to the extended position on air loss and does not hold a mid-stroke position.
With the male rod thread (B code) and 1/8" port, it connects directly to your tooling and air supply. The optional -S magnet is fitted here, so you can mount CMSE or DMSE sensors to confirm rod position. Mounting options include FA/FB flange, LB foot, CA/CB clevis, and SDB pivot brackets to match your fixture.
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 ATE40X25SB FAQ
The ATE40X25SB delivers a net pull of 500.3 N at 0.5 MPa and 729 N at 0.7 MPa, with the spring force already subtracted. The minimum working pressure is 0.2 MPa to overcome the return spring. It operates from 0.2-1.0 MPa (28-145 psi) and has a proof pressure of 1.5 MPa (215 psi).
The ISO 21287 compact body saves about 50% of the mounting length compared to an ISO 15552 profile cylinder, so it fits into machine guards and gantries where space is limited. The fixed TPU bumper absorbs end-of-stroke energy, and the optional -S magnet allows CMSE or DMSE sensors to be mounted for position feedback.
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