
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE40X15B is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø40mm bore and 15mm 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.
Single acting push cylinder with spring return, the ASE40X15B extends its 12 mm rod on air and retracts on the spring when pressure drops. At the 40 mm bore it delivers 556.8 N of push at 0.5 MPa (808.1 N at 0.7 MPa), already net of the spring, and it runs from just 0.2 MPa (28-145 psi working band, 1.5 MPa / 215 psi proof). The B code gives a male rod thread on a hard-chrome plated S45C shaft.
Built to ISO 21287, the hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarded cells. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the roller-burnished bore resists wear. Plan on roughly 334 N (about 34 kg) of usable push at 0.5 MPa for real work, or around 28 kg of vertical lift with a 2:1 margin. Speed range is 50-500 mm/s.
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE40X15B |
|---|---|
| Series | ASE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 15 mm |
| Acting type | Single acting, push (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.
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 556.8 N |
| 0.7 MPa | 808.1 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). |
|---|---|
| 40 | 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.
A 15 mm clamp stroke and 556.8 N at 0.5 MPa is enough to seat small aluminium brackets in milling fixtures, with the spring releasing the part the moment air is cut.
Push finished bushings out of a locating nest on a small press bench - the compact body fits where a full-length profile cylinder will not, and one air line is all it needs.
Spring-return push holds flaps or lids down during taping at up to 500 mm/s approach speed; on power loss the pad lifts clear automatically.
At 556.8 N push at 0.5 MPa, the 40 mm bore sits between the 32 mm (352.5 N) and 50 mm (875.5 N) single-acting sizes - step down for lighter clamps, up if your load is near the limit. The 15 mm stroke suits short clamp-and-release moves only; this series is not for long travels. Because the spring drives the rod home on air loss, it cannot hold a mid-stroke position. Order the -S code if you want the optional magnet for CMSE / DMSE switches; this plain ASE40X15B has no magnet. FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets bolt to the standard ISO 21287 face, and I/Y knuckles suit the male rod thread.
Quick checklist
It is a single acting push, spring-return cylinder: 556.8 N push at 0.5 MPa and 808.1 N at 0.7 MPa, both already net of the return spring. Working pressure is 0.2-1.0 MPa (28-145 psi) with 1.5 MPa (215 psi) proof, air filtered to 40 um, speed 50-500 mm/s, bore 40 mm, stroke 15 mm, rod 12 mm with a male thread (B code) and a 1/8" port.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and a fixed TPU bumper at each end absorbs end-of-stroke shock. Sensing is optional: order the -S version to get the magnet for CMSE / DMSE switches - this plain model carries no magnet, so no switch can be mounted on it.
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