This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X50 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 ACPD50X50 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 50mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X50 (ISO 21287 ACE), in the same bore, stroke and force class.
The ACPD50X50 is a double acting, double-rod compact cylinder in the discontinued DIN-standard ACP family: a 50 mm bore with a 16 mm rod leaving BOTH covers, so the piston pushes and pulls with identical force. At 0.5 MPa it delivers 881.2 N in each direction (1233.7 N at 0.7 MPa), and the through-rod resists rotation and side load while the rear rod can carry a sensor flag. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper sits at each end.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures, and FA/FB flange or LB foot brackets bolt straight to its face. Dividing the 881.2 N rating by 9.81 gives roughly 89 kgf, so plan on lifting about 45 kg vertically with a 2:1 margin. Note that this model is discontinued: the current-production drop-in is the ACED50X50 (swap the P for an E), so confirm the ISO 21287 mounting dimensions before ordering.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X50 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X50 |
| Bore size | Ø50 mm |
| Stroke | 50 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 ACED50X50 (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. |
| ×50 | 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 clamps from either cover with the same 881.2 N at 0.5 MPa, letting one cylinder act on a workpiece from both sides of a machining fixture.
Equal force in both directions makes the 50 mm stroke ideal for reciprocating pushers that index cartons between conveyor lanes at 30-500 mm/s.
The rear rod carries a switch flag for end-of-travel detection on pick-and-place gantries, provided the optional -S magnet version is ordered with CMSE or DMSE switches.
At 881.2 N per side at 0.5 MPa, the 50 mm bore suits clamping and pressing in the 80-90 kgf class; step down to the 40 mm bore (571.8 N) for lighter jigs or up to the 63 mm bore (1458.1 N) for heavier presses. Like any plain double-rod cylinder it drifts when air is lost, so add a rod lock or pilot check for a held load. This unit has no magnet: order the -S code if you need CMSE / DMSE switch positions. For new builds, specify the ACED50X50 instead, since ACPD is discontinued.
Replacement checklist
Because a 16 mm rod exits both covers, both strokes use the rod-side area: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, identical push and pull. Peak force at 1.0 MPa is 179.7 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, and speed runs 30-500 mm/s.
It is a short ISO 21287-class compact cylinder whose body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod, fixed TPU bumpers and a 1/8" port. The ACPD50X50 is discontinued; the current drop-in is the ACED50X50, so confirm the ISO 21287 mounting dimensions before swapping.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X50 replacement — usually within 7-8 hours.