This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X225B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X225B 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 ACPD50X225B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 225mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X225B (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD50X225B pushes and pulls with the same 881.2 N at 0.5 MPa because each stroke works on the rod-side area. The 50 mm bore sits in the mid-force band of the DIN-standard ACP range, and the 225 mm stroke stays inside the 250 mm standard limit for this bore, so no made-to-order build is needed. The through-rod resists rotation and light side load and gives a symmetric mount, and the rear rod can carry a sensor flag in packaging or assembly machinery.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight gantries and slide tables. A fixed TPU bumper pads both stroke ends, the hard-anodized aluminium body carries an S45C hard-chrome 16 mm rod, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). This model is discontinued: the current-production drop-in is the ACED50X225, same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. Plan on about 528 N (roughly 54 kg) of real work at 0.5 MPa, or about 45 kg of vertical lift with a 2:1 margin.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X225B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X225B |
| Bore size | Ø50 mm |
| Stroke | 225 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 ACED50X225B (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. |
| ×225 | 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 moves a pallet or fixture back and forth at the same speed and force in both directions, with the rear rod free for a position flag.
A 50 mm bore with rods on both covers clamps a workpiece between two tooling points in one stroke, useful on machining fixtures where a single-rod cylinder cannot reach.
At 30-500 mm/s and about 45 kg of vertical lift capability with a 2:1 margin, the through-rod drives a divertor arm across a packaging line without twisting under side load.
Size both ways: if 881.2 N at 0.5 MPa is more than the job needs, the ACPD40X225B gives 571.8 N in the same double-rod format; if the load is heavier, step up to the ACPD63X225B at 1458.1 N. Remember that a plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for a held load. The B code gives a male M10x1.5 rod thread; FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot and FTC brackets bolt to the standard face. This unit has no magnet - order the -S code if you want CMSE / DMSE switches. It is discontinued, so spec the ACED50X225 as the current replacement.
Replacement checklist
Being double acting with a rod on each cover, force is equal both ways: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, taken from the rod-side area of the 50 mm bore. At the full 1.0 MPa rating the peak is 179.7 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof limit.
No - the ACPD family is discontinued. The current-production drop-in is the ACED50X225, the ISO 21287 successor with the same bore, stroke and force class. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions before swapping. The fixed TPU bumpers, 1/8" ports and M10x1.5 male rod thread carry over in the same force class.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X225B replacement — usually within 7-8 hours.