Airtac ATE Single Acting Guided Compact Cylinder ATE40X20SB
The AirTAC Airtac ATE Single Acting Guided Compact Cylinder ATE40X20SB is a genuine single acting, pull (spring return) ISO 21287 compact air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 ATE40X20SB
This ATE40X20SB is a single acting pull cylinder, meaning the spring extends the rod and air retracts it, with forces net of the spring. At 0.5 MPa it delivers 500.3 N of pull, and at 0.7 MPa that rises to 729 N, so it can handle moderate retraction tasks in a compact envelope.
The ISO 21287 short body takes up about half the mounting length of an ISO 15552 profile cylinder, which helps when space is tight. The male rod thread (the B in the code) simplifies direct coupling to a moving mechanism, and the optional -S magnet is fitted here, so CMSE or DMSE switches can be mounted for position sensing. For a real-world estimate, at 0.5 MPa this unit can safely handle about 30 kg of vertical work with a 2:1 margin.
Airtac ATE Single Acting Guided Compact Cylinder ATE40X20SB Technical Specifications
| Model | Airtac ATE Single Acting Guided Compact Cylinder ATE40X20SB |
|---|---|
| Series | ATE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 20 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 ATE40X20SB
| ATE | ISO 21287 compact cylinder (single-acting pull, spring-return). |
|---|---|
| 40 | 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 ATE40X20SB Is Used
Jig Retraction
Use the 500.3 N pull at 0.5 MPa to retract a locating pin or clamp in a CNC fixture, where the spring extend keeps the part seated when air is off.
Labeler Tensioner
In a packaging line, this cylinder can pull a dancer roller to maintain web tension on a label applicator, with the spring extending the roller when the line stops.
Guard Door Latch
Mount it on a machine guard to pull a latch bolt open when air is applied, and let the spring extend the bolt to lock the guard when air is removed for safety.
Is the Airtac ATE Single Acting Guided Compact Cylinder ATE40X20SB the Right Cylinder?
When sizing, compare this 40 mm bore against a smaller 32 mm bore (296 N at 0.5 MPa) if your load is light, or a larger 50 mm bore (775 N at 0.5 MPa) if you need more pull. Remember the spring returns the rod to its extended position on air loss, so it does not hold a mid-stroke position. With a 1/8" port and a male rod thread, this model suits direct mounting to a clevis or rod end, and the optional -S magnet allows CMSE or DMSE sensor feedback.
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 ATE40X20SB FAQ
The ATE40X20SB is single acting pull, with forces net of the return spring. At 0.5 MPa it pulls 500.3 N, and at 0.7 MPa it pulls 729 N. The minimum working pressure is 0.2 MPa, and the proof pressure is 1.5 MPa (215 psi).
Yes, the S in the code ATE40X20SB means it has the optional magnet fitted, so you can mount CMSE or DMSE reed or solid-state switches to detect the piston position. Without the S code, no magnet is present and sensors cannot be used.
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