This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE20X175B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE20X175B 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 ACP20X175B 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 ACE20X175B (ISO 21287 ACE), in the same bore, stroke and force class.
The ACP20X175B is a double acting compact cylinder in the DIN-standard ACP series, with a 20 mm bore and a 175 mm stroke that is made to order because it exceeds the 100 mm maximum standard stroke for this bore. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The male rod thread (B code) and PT port thread are set by the code, and the port itself is M5x0.8 because ports depend only on bore.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. As a rule of thumb, plan on about 94 N of usable push at 0.5 MPa, which corresponds to lifting roughly 9 kg vertically with a 2:1 margin. This model is discontinued: the current-production drop-in is the ACE20X175, so confirm the ISO 21287 mounting dimensions before swapping. Note that without air pressure the piston drifts - use a rod lock or pilot check valve if the load must be held.
| Model | Airtac ACP Compact Cylinder ACP20X175B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE20X175B |
| 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 ACE20X175B (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 ACE20X175B 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 157.1 N push at 0.5 MPa and short body make this cylinder a fit for drill jigs and small assembly fixtures where a full-length profile cylinder will not fit.
With about 9 kg of practical vertical lift capacity at 0.5 MPa, it suits ejecting small aluminium housings or stamped clips from a nest on an automated bench.
The 175 mm made-to-order stroke reaches across narrow conveyor frames to push cartons or trays off the line at speeds from 30 to 500 mm/s.
Size against neighbours: the 16 mm bore gives 100.5 N push at 0.5 MPa, while the 25 mm bore reaches 245.4 N - choose the 25 if your 157.1 N requirement has little margin. The 175 mm stroke is non-standard for bore 20 (max standard 100 mm), so order it as a made-to-order build. If you need position sensing, order the -S variant instead; this B-coded unit has no magnet, so CMSE or DMSE switches cannot be fitted. FA/FB flange, LB foot and CA/CB clevis mountings are available. For new projects, specify the ACE20X175, the current replacement in the same force class.
Replacement checklist
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa, 219.9 N push and 164.9 N pull; theoretical maximum 32 kgf at 1.0 MPa. It is double acting with a 20 mm bore, 175 mm non-standard stroke, 10 mm male-thread rod, M5x0.8 port, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s and a fixed TPU bumper at both ends.
The ACP family is discontinued; the current-production drop-in is the ACE20X175, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. This unit has no magnet, so no switch can be mounted; order the -S code to enable CMSE or DMSE reed or solid-state switches.
Send us the quantity and destination. We confirm price, stock and lead time on the ACE20X175B replacement — usually within 7-8 hours.