This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X110B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X110B 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 ACPD50X110B 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 ACED50X110B (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD50X110B pushes and pulls with identical force: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa in either direction, because both strokes work on the rod-side area of the 50 mm bore. The through-rod resists rotation and side load, gives a symmetric mounting face, and the rear rod can carry a sensor flag, while fixed TPU bumpers decelerate the piston at each end. Speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi) of clean, 40 um filtered air.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and gantries. For sizing, plan on about 529 N of usable push at 0.5 MPa - roughly a 54 kg horizontal load - or a vertical lift of about 44 kg with a 2:1 margin. Note this model is discontinued: the current-production drop-in is ACED50X110, same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X110B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X110B |
| 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 ACED50X110B (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 through-rod lets a CNC fixture clamp from either end with the same 881.2 N, ideal for pallet trunnions that need equal grip both ways.
A packaging line reject arm driven both directions at 1233.7 N at 0.7 MPa, with the rear rod carrying a position flag for the -S magnet option.
Lab and QC benches use the 110 mm stroke to load and retract samples at identical force, with the 1/8" port keeping plumbing compact.
At 881.2 N per direction, the 50 mm bore suits clamping and pressing fixtures needing 60-90 kg of working force; step down to the 40 mm bore (571.8 N) for lighter work or up to the 63 mm bore (1458.1 N) for heavier strokes. The 110 mm stroke sits well inside the 250 mm standard maximum for this bore. This unit has a male rod thread (B code) and no magnet - order the -S code if you need CMSE or DMSE switch positions. Since the ACPD is discontinued, specify ACED50X110 as the current replacement and verify the ISO 21287 mounting pattern. For loads that must stay put on air loss, add a rod lock or pilot check - the bare cylinder will drift.
Replacement checklist
Yes - the double-rod design exposes the rod-side area on both strokes, so output is equal each way: 881.2 N at 0.5 MPa, 1233.7 N at 0.7 MPa, and a maximum of 179.7 kgf at 1.0 MPa. Never size it from a larger single-rod push figure. In practice, budget about 529 N (roughly 54 kg) of usable force at 0.5 MPa, or a vertical lift of about 44 kg with a 2:1 safety margin.
The ACPD family is no longer in production; the current drop-in is ACED50X110 - just swap the P for an E - which matches the same 50 mm bore, 110 mm stroke and force class in the ISO 21287 short-body format. Because the ACP was built to a DIN-standard footprint, confirm the ISO 21287 mounting dimensions and the FA/FB flange or LB foot pattern before ordering. Also note the magnet is optional: without the -S code no CMSE or DMSE switch can be fitted.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X110B replacement — usually within 7-8 hours.