This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X175SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X175SB 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.

The AirTAC Airtac ACP Compact Cylinder ACP20X175SB is a double acting DIN-standard tight/compact air cylinder with a Ø20mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE20X175SB (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP20X175SB is a double acting DIN-standard compact cylinder with a 20 mm bore and a 175 mm stroke, built on a hard-anodized aluminium body with an S45C hard-chrome piston rod and a fixed TPU bumper at each end. Because the short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight jigs, guards and gantries where a full-length cylinder simply will not fit. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa.
The S code in this model means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly on the body for end-of-stroke sensing, and the B code gives a male rod thread. Plan for roughly 94 N (about 9.6 kg) of real work at 0.5 MPa, which corresponds to lifting around 4.8 kg vertically with a 2:1 margin. Note that the 175 mm stroke exceeds the 100 mm maximum standard stroke for this bore, so it is a made-to-order build. This model is discontinued; the current-production drop-in is the ACE20X175, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACP Compact Cylinder ACP20X175SB |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X175SB |
| Bore size | Ø20 mm |
| Stroke | 175 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE20X175SB (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 | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
The ACE20X175SB produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×175 | 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).
The short body fits inside dense fixture plates on CNC jig tables, where the 157.1 N push at 0.5 MPa clamps aluminium workpieces through the male rod thread.
With the -S magnet fitted, CMSE or DMSE switches confirm each 175 mm eject stroke on electronics assembly lines, pushing finished PCB trays off a conveyor at up to 500 mm/s.
Lifts about 4.8 kg vertically with a 2:1 margin - enough for raising sensor heads or small covers in packaging machines where mounting space is limited.
Size both ways: if 157.1 N of push at 0.5 MPa is more than your task needs, the 16 mm bore delivers 100.5 N; if you need headroom, the 25 mm bore gives 245.4 N at the same pressure. Remember that a plain cylinder of this type drifts when air is lost or the valve centres, so add a rod lock or pilot check valve if the load must stay put. The 175 mm stroke is non-standard for this bore and made to order. FA/FB flange, LB foot and CA/CB clevis mountings plus I/Y rod knuckles bolt to the standard face, and the ACE20X175 is the current replacement - verify the ISO 21287 mounting dimensions before ordering.
Replacement checklist
It is a double acting 20 mm bore cylinder: push 157.1 N and pull 117.8 N at 0.5 MPa, push 219.9 N and pull 164.9 N at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the air must be filtered to 40 um. The rod is 10 mm with a male thread, the port is M5x0.8, and the 175 mm stroke is a made-to-order length above the 100 mm standard maximum.
Order the ACE20X175, the current-production ISO 21287 successor made by swapping the P for an E. It matches the same bore, stroke and force class with a similar short body and mounting family, but because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. This model carries the optional -S magnet for CMSE / DMSE switches, and the ACE range supports the same sensing approach.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X175SB replacement — usually within 7-8 hours.