This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X110 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X110 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 ACPD50X110 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 110mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X110 (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a through piston rod, the ACPD50X110 pushes and pulls with the same 881.2 N at 0.5 MPa because both strokes work on the rod-side area of the 50 mm bore. At 0.7 MPa that rises to 1233.7 N in either direction, and the rod exits both covers so the back-end rod can carry a sensor flag or a second tooling plate. The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs and gantries.
In practice, plan on roughly 529 N (about 54 kg) of usable push at 0.5 MPa, or a vertical lift of around 44 kg with a 2:1 margin. The hard-anodized aluminium body carries a fixed TPU bumper at each end, the S45C hard-chrome 16 mm rod resists wear, and speed runs 30-500 mm/s. Note that this model is discontinued: the current-production drop-in is the ACED50X110, so confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X110 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X110 |
| Bore size | Ø50 mm |
| Stroke | 110 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 ACED50X110 (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. |
| ×110 | 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 equal 881.2 N push and pull at 0.5 MPa suits a machining-center jig where the through rod must seat a part on entry and eject it on return with identical force.
A rod on both covers balances the moving carriage of a packaging-line slide, and the back-end rod carries a flag for CMSE switches when the -S magnet is ordered.
With about 44 kg of vertical lift capacity at a 2:1 margin, the 110 mm stroke raises and lowers small palletized trays on an assembly cell where headroom is short.
At 881.2 N per side at 0.5 MPa, the 50 mm bore sits mid-range: step down to the 40 mm bore (571.8 N) for lighter clamping, or up to the 63 mm bore (1458.1 N) when the job needs more force without growing the footprint. The 110 mm stroke is within the 250 mm standard limit for this bore, so no made-to-order build is required. Remember that a plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check if the load must stay put. Mounting uses FA/FB flange or LB foot on the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switches; this code has no magnet fitted. Order the ACED50X110 as the current replacement.
Replacement checklist
Because it is a double-rod cylinder, output is equal both ways: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa on the 50 mm bore, with a peak of 179.7 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 1/8" port serves both chambers. Never expect a larger push than pull - the rod-side area governs both strokes.
The ACPD50X110 is no longer in production. Its current drop-in is the ACED50X110 - swap the P for an E - which matches the same bore, stroke and force class in the ISO 21287 short-body format. Since the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions and the FA/FB or LB mounting interfaces before you swap. The optional -S magnet for CMSE / DMSE switches carries over as an option on the replacement.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X110 replacement — usually within 7-8 hours.