
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE20X5 is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø20mm bore and 5mm 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 ASE20X5 is a single acting push cylinder with spring return, delivering a net push force of 127.4 N at 0.5 MPa and 190.2 N at 0.7 MPa. Its 5 mm stroke suits short-travel clamping or indexing tasks, and the minimum working pressure is 0.2 MPa.
The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, fitting into tight machine guards or fixtures. The fixed TPU bumper at both ends absorbs end-of-stroke energy, and the hard-anodized aluminium body with S45C hard-chrome rod resists wear. For a safe working load, plan for about 76 N (0.6 x 127.4 N) of real work at 0.5 MPa, or about 7.8 kg vertical lift with a 2:1 margin.
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE20X5 |
|---|---|
| Series | ASE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 5 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. |
| ×5 | 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 ASE20X5 to clamp small parts in a CNC fixture, where its 5 mm stroke and 127.4 N force hold components securely during drilling or milling.
In a packaging line, this cylinder extends to press a label onto a product, then springs back quickly, handling up to 190.2 N at 0.7 MPa for consistent application.
Mount the ASE20X5 to push a safety pin or latch in a machine guard, using its compact body to fit within a slim profile and retract automatically when air is removed.
Choose the ASE20X5 for very short strokes up to 5 mm where space is limited; its 127.4 N push at 0.5 MPa suits light clamping or part ejection. For a smaller option, the ASE16 offers 78.4 N at 0.5 MPa, while the ASE25 provides 210.1 N for heavier loads. Since it is single acting, the spring retracts the rod on air loss, so 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, with an optional -S magnet for CMSE or DMSE sensors if ordered.
Quick checklist
The ASE20X5 provides a net push force of 127.4 N at 0.5 MPa and 190.2 N at 0.7 MPa, already accounting for the return spring. The minimum working pressure is 0.2 MPa, and the proof pressure is 1.5 MPa (215 psi).
The ISO 21287 compact body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight spaces like machine guards or small fixtures. The fixed TPU bumper at both ends absorbs end-of-stroke impact, and the optional -S magnet allows CMSE or DMSE sensors to detect rod position.
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