This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ASE20X25S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ASE20X25S in place of this model. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.
Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S
The AirTAC Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S is a single acting, push (spring return) DIN-standard tight/compact air cylinder with a Ø20mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ASE20X25S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeSingle acting, push (spring return)
- Rod threadM6×1.0
- StatusDiscontinued → ASE20X25S
About the Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S
A single acting push cylinder with spring return, the ASP20X25S extends its 10 mm rod on air and retracts on the built-in spring, so one air line is all the plumbing a 20 mm bore machine needs. At 0.5 MPa the net push is 127.4 N (190.2 N at 0.7 MPa), already discounted for the spring, and 0.2 MPa is the minimum working pressure to overcome the spring. The short ISO 21287-class body cuts roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs and guarding where a full-length body will not fit.
This unit carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signalling. A rule of thumb for real work: budget about 76 N (roughly 7.7 kgf) of usable push at 0.5 MPa, which lifts about 6 kg vertically with a 2:1 margin. Note that the ASP series is discontinued; the current-production drop-in is the ASE20X25, so confirm the ISO 21287 mounting dimensions before swapping.
Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S Technical Specifications
| Model | Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S |
|---|---|
| Series | ASP DIN compact cylinder (discontinued) |
| Replacement | ASE20X25S |
| Bore size | Ø20 mm |
| Stroke | 25 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 bumper (both ends) |
| Max standard stroke | Up to 25 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ASE20X25S (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
Theoretical Output Force (Ø20mm)
| 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.
Model Code: Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S
| ASP | DIN compact cylinder (single-acting push, spring-return, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (adjustable stroke).
Where the Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S Is Used
Bench-top press jig
A 127.4 N net push at 0.5 MPa seats small terminals or dowels in electronics assembly fixtures, with the spring clearing the part the instant air drops.
Reject gate on a packaging line
The 25 mm stroke flicks an off-spec carton off a conveyor lane; the -S magnet and a DMSE switch confirm the gate reached home every cycle.
Lab sample ejector
A single M5x0.8 air line drives the plunger that pushes vials out of a holder, and the spring return empties the station with no valve on the exhaust side.
Replacing the Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S with the ASE20X25S
Size the job both ways: the 16 mm bore gives 78.4 N at 0.5 MPa, while stepping up to 25 mm buys 210.1 N. If your clamping or ejecting load sits between those, this 20 mm bore at 127.4 N net is the match. Remember the spring drives the rod home on air loss, so it will not hold a mid-stroke position. Mounting brackets from the FA/FB flange, LB foot and CA/CB clevis family bolt straight on, and the -S magnet in this code lets CMSE / DMSE switches report stroke end. Order the ASE20X25 as the current replacement and verify ISO 21287 dimensions.
Replacement checklist
- ✓ Current-production ACE → ASE20X25S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ASP Single Acting Guided Compact Cylinder ASP20X25S FAQ
Net of the return spring it pushes 127.4 N at 0.5 MPa and 190.2 N at 0.7 MPa. Operating pressure is 0.2-1.0 MPa (28-145 psi), proof 1.5 MPa (215 psi), speed 50-500 mm/s, temperature -20 to +70 C, air filtered to 40 um, port M5x0.8, female rod thread M6x1.0, rod 10 mm, fixed TPU bumper at both ends.
Order the ASE20X25, the current-production ISO 21287 successor: swap the P for an E and you get the same 20 mm bore, 25 mm stroke and force class. Confirm the ISO 21287 mounting dimensions against your fixture before the swap, since the ASP was built to a DIN-standard compact pattern.
Request a Quote for the ASE20X25S
Send us the quantity and destination. We confirm price, stock and lead time on the ASE20X25S replacement — usually within 7-8 hours.