This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X175 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X175 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 ACPD Double Rod Compact Cylinder ACPD50X175 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 175mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X175 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a through rod, the ACPD50X175 drives a 50 mm bore over a 175 mm stroke and pushes 881.2 N in EACH direction at 0.5 MPa, because both strokes work on the rod-side area. At 0.7 MPa that rises to 1233.7 N either way, peaking at 179.7 kgf at 1.0 MPa. The 16 mm rod exits both covers, so the rear rod resists rotation and side load and can carry a sensor flag while the front rod does the work.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight guarding and slide assemblies. A fixed TPU bumper sits at both ends and the hard-anodized aluminium body carries an S45C hard-chrome rod. In practice, plan on about 529 N of usable push at 0.5 MPa - enough to lift roughly 45 kg vertically with a 2:1 margin. Note: this model is discontinued; the current drop-in is the ACED50X175, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X175 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X175 |
| Bore size | Ø50 mm |
| Stroke | 175 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED50X175 (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | 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 through rod drives a pallet slide on a small-parts assembly line, with the rear rod carrying a flag for position sensing at 30-500 mm/s.
881.2 N both ways at 0.5 MPa presses bushings into housings on a machine-shop bench, and the symmetric rod mount keeps the tooling square.
A packaging machine uses the 175 mm stroke to push cartons between lanes, with the fixed TPU bumpers absorbing end-of-travel shock.
At 881.2 N per direction (0.5 MPa), the 50 mm bore sits between the 40 mm (571.8 N) and 63 mm (1458.1 N) double-rod units - step down for lighter clamping, up for heavier presses. The piston drifts when air is lost, so add a rod lock or pilot check if the load must stay put. FA/FB flange or LB foot mounting fits the standard face, and the optional -S magnet enables CMSE / DMSE switches; this code has no magnet. Order the ACED50X175 for current production.
Replacement checklist
It is a double-rod cylinder, so output is equal both ways: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa on each stroke (rod-side area), with a maximum of 179.7 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, -20 to +70 C.
Order the ACED50X175, the current ISO 21287 replacement (swap the P for an E). It matches the same 50 mm bore, 175 mm stroke and force class with a matching short body and mounting family, but confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP was built to a DIN standard.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X175 replacement — usually within 7-8 hours.