This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X55 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X55 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.
Airtac ACPD Double Rod Compact Cylinder ACPD50X55
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X55 is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 55mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X55 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke55 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.5
- StatusDiscontinued → ACED50X55
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACPD Double Rod Compact Cylinder ACPD50X55
A double acting compact cylinder with a rod exiting both covers, the ACPD50X55 pushes and pulls with identical output because both strokes work on the rod-side area: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa in either direction. The 16 mm through-rod resists rotation and side load, gives a symmetric mounting face, and leaves the rear rod free to carry a sensor flag. A fixed TPU bumper sits at each end, and travel speed runs 30-500 mm/s.
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. At 0.5 MPa the thrust equals about 90 kgf, so plan on lifting roughly 45 kg vertically with a 2:1 margin. Note this model is discontinued: the current-production drop-in is the ACED50X55 (same bore, stroke and force class), and buyers should confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD50X55 Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X55 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X55 |
| Bore size | Ø50 mm |
| Stroke | 55 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 ACED50X55 (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.
Theoretical Output Force (Ø50mm)
| 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).
Model Code: Airtac ACPD Double Rod Compact Cylinder ACPD50X55
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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).
Where the Airtac ACPD Double Rod Compact Cylinder ACPD50X55 Is Used
Symmetric CNC part clamp
The equal 881.2 N force in both directions lets one cylinder clamp and release a machined housing fixture with the same grip either way, no reverse-bore math needed.
Reciprocating slide on a packaging line
The 16 mm through-rod anchors the carriage on both covers, resisting rotation at 30-500 mm/s while the rear rod carries a flag for position sensing.
Bench-top press for electronics assembly
About 45 kg of vertical lift capacity with a 2:1 margin presses connectors into PCBs in a compact cell where a full-length profile cylinder will not fit.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X55 with the ACED50X55
For this 50 mm bore, 881.2 N per direction at 0.5 MPa suits clamping and press-fit work around 500 N of real effort once you keep a margin. Step down to the 40 mm bore (571.8 N) for lighter loads or up to the 63 mm bore (1458.1 N) when you need more thrust in the same short body. The plain piston drifts when air is lost, so add a rod lock or pilot check if the load must stay put. FA/FB flange or LB foot mounts bolt to the ISO 21287 face, and CMSE / DMSE switches require the optional -S magnet code (this unit has no magnet). Since ACPD50X55 is discontinued, order the ACED50X55 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACED50X55
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPD Double Rod Compact Cylinder ACPD50X55 FAQ
Because it is a double-rod cylinder, force is equal both ways (rod-side area on each stroke): 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. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure, on air filtered to 40 um.
Order the ACED50X55, the current-production ISO 21287 successor (swap the P for an E). It matches the same 50 mm bore, 55 mm stroke and force class, but confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard. FA/FB flange and LB foot options carry over, and the optional -S magnet enables CMSE / DMSE switches.
Request a Quote for the ACED50X55
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X55 replacement — usually within 7-8 hours.