This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X5SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X5SB 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 ACPD50X5SB is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 5mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X5SB (ISO 21287 ACE), in the same bore, stroke and force class.
A double acting compact cylinder with a rod leaving both covers, the ACPD50X5SB pushes with the same 881.2 N at 0.5 MPa (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 5 mm stroke suits tiny repositioning moves, and the male rod thread (B code) plus the optional -S magnet that this model carries make switch mounting with CMSE or DMSE sensors straightforward. Its hard-anodized aluminium body is an ISO 21287 short build, roughly 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into cramped fixtures.
The through-rod resists rotation and light side load and gives a symmetric mount, and the rear rod can carry a sensor flag on a packaging or assembly machine. A fixed TPU bumper sits at each end. In practice, plan on about 529 N of real work at 0.5 MPa, which is roughly 54 kg of usable vertical load; the full rod-side rating equates to about 90 kgf. Note that this model is discontinued: the current-production drop-in is the ACED50X5 in the same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X5SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X5SB |
| Bore size | Ø50 mm |
| Stroke | 5 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 ACED50X5SB (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. |
| ×5 | 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).
A 5 mm double-rod nudge with 881.2 N at 0.5 MPa seats a folded flap on a case packer, and the rear rod carries a CMSE switch flag to confirm the move.
On a CNC jig, the male-threaded through-rod presses a blank into its nest from both sides with equal 881.2 N force, keeping the fixture symmetric.
A short 5 mm stroke on a labelling machine trims the applicator pad height, with DMSE switches reporting both end positions through the -S magnet.
At 881.2 N per side at 0.5 MPa, bore 50 sits between the 40 mm size (571.8 N) and the 63 mm size (1458.1 N); pick 40 when force is marginal and 63 when you want margin. The 5 mm stroke is well inside the 250 mm maximum standard stroke for this bore. If the load must stay put when air is lost, add a rod lock or pilot check, since a plain double-rod cylinder will drift. FA/FB flange and LB foot mounts bolt to the ISO 21287 face, and the -S magnet on this unit accepts CMSE / DMSE switches. For new projects, order the ACED50X5 instead, as this ACPD version is discontinued.
Replacement checklist
Yes. Because a rod exits both covers, both strokes use the rod-side area of the 50 mm bore: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, equal push and pull. At 1.0 MPa the maximum is 179.7 kgf. 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, temperature -20 to +70 C.
Order the ACED50X5, the ISO 21287 successor made by swapping the P for an E. It matches the same bore, stroke and force class with a short aluminium body and FA/FB flange or LB foot mounting family. Before swapping, confirm the ISO 21287 mounting dimensions, since the ACPD was built to a DIN-standard compact format.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X5SB replacement — usually within 7-8 hours.