
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE20X15B is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø20mm bore and 15mm 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.
This AirTAC ASE20X15B is a single acting push cylinder with spring return, so air extends the rod and the spring pulls it back. At 0.5 MPa it delivers 127.4 N of push force, net of the spring, which suits light clamping and indexing tasks.
Its ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, so it fits inside tight machine guards and small jigs. The male rod thread (B code) lets you bolt on custom tooling directly, and the fixed TPU bumper at both ends softens the stop. A safe working load is about 76 N at 0.5 MPa, so plan for real work around that figure, not the full rating.
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE20X15B |
|---|---|
| Series | ASE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push (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.
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 127.4 N |
| 0.7 MPa | 190.2 N |
Single-acting push: air extends the rod; the return spring 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).
| ASE | ISO 21287 compact cylinder (single-acting push, spring-return). |
|---|---|
| 20 | Bore size in mm. |
| ×15 | 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.
Use the 127.4 N push at 0.5 MPa to clamp small plastic parts in a drilling jig, with the spring return clearing the fixture automatically.
Drive a label tamp head with the 15 mm stroke to press labels onto boxes, relying on the fixed TPU bumper for a quiet stop.
Push a small safety gate latch into place; the spring retracts it when air is removed, keeping the mechanism fail-safe.
For a lighter push, the ASE16X15 offers 78.4 N at 0.5 MPa, while the ASE25X15 steps up to 210.1 N. Since this is single acting, the spring always returns the rod to its home position, so it does not hold a mid-stroke position on air loss. The optional -S magnet is not fitted here, so no CMSE or DMSE sensor can be used; order the -S code if you need position sensing.
Quick checklist
At 0.5 MPa the push force is 127.4 N, and at 0.7 MPa it is 190.2 N, both net of the return spring. Minimum working pressure is 0.2 MPa, maximum is 1.0 MPa (145 psi), and proof pressure is 1.5 MPa (215 psi).
No, this model has no magnet because the -S code was not ordered. To use CMSE or DMSE reed or solid-state switches, you must order the ASE20X15SB version with the optional magnet. The compact ISO 21277 body has magnet slots for those sensors.
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