This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ASE50X5S, the same code under the new prefix. 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.

The AirTAC ASP Single Acting Guided Compact Cylinder ASP50X5S is a single acting, push (spring return) DIN-standard tight/compact air cylinder with a Ø50mm bore and 5mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ASE50X5S (ISO 21287 ACE), in the same bore, stroke and force class.
A single acting push cylinder with spring return, the ASP50X5S extends its 16 mm rod with compressed air and lets the internal spring pull it back home - one air line is all the plumbing takes. At the short 5 mm stroke, it delivers 875.5 N of push at 0.5 MPa (1268.2 N at 0.7 MPa), both figures already net of the return spring, and it starts moving from just 0.2 MPa. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signalling.
The hard-anodized aluminium body with an S45C hard-chrome rod saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why this bore class slots into tight jigs and guard-locked stations. Note that this model is discontinued: the current-production direct is the ASE50X5, so confirm the ISO 21287 mounting dimensions before you swap.
| Model | Airtac ASP Single Acting Guided Compact Cylinder ASP50X5S |
|---|---|
| Series | ASP DIN compact cylinder (discontinued) |
| Replacement | ASE50X5S |
| Bore size | Ø50 mm |
| Stroke | 5 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 ASE50X5S (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.
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 875.5 N |
| 0.7 MPa | 1268.2 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.
| ASP | DIN compact cylinder (single-acting push, spring-return, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×5 | 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 (double rod, adjustable stroke).
A 5 mm jab with 875.5 N at 0.5 MPa nudges a formed carton off a forming shoe on a packaging line, and the spring retracts the pin the instant air drops.
Clamps a machined aluminium blank against a hardened stop inside a compact fixture body where a full-length cylinder simply has no room.
Kicks caps or bushings off a conveyor edge into a chute; about 45 kg of vertical-lift equivalent means even dense steel parts move cleanly.
Compare against neighbours in the same force band: the ASP40X5S gives 556.8 N at 0.5 MPa if your load is lighter, while the ASP63X5S reaches 1420.5 N when you need more margin at the same short stroke. Remember the spring drives the rod fully back on air loss, so this unit cannot hold a mid-stroke position. Mounting brackets and the fitted magnet with CMSE / DMSE switches should be matched to the ASE50X5 you will standardize on, since the ASP50X5S is discontinued.
Replacement checklist
Push is 875.5 N at 0.5 MPa and 1268.2 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, temperature -20 to +70 C, and a 1/8" port on the 50 mm bore. The rod is 16 mm with a female M10x1.5 thread.
Order the ASE50X5, the current ISO 21287 successor: swap the P for an E and you keep the same 50 mm bore, 5 mm stroke and force class. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since this ASP was built to a DIN-standard compact pattern. The fixed TPU bumpers at both ends and the optional -S magnet for CMSE / DMSE switches carry over in the same spirit.
Send us the quantity and destination. We confirm price, stock and lead time on the ASE50X5S replacement — usually within 7-8 hours.