This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X120B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X120B 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 ACPD50X120B
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X120B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 120mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X120B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.5
- StatusDiscontinued → ACED50X120B
- 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 ACPD50X120B
A double acting, double-rod compact cylinder built to the DIN-standard ACP layout, the ACPD50X120B pushes a 16 mm rod out of both covers, so thrust is identical on each stroke: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa from the 50 mm bore. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight fixtures, guarding and gantries. A male rod thread (the B code) is fitted at each end, and the 1/8" ports sit on the 50 mm body.
Because the through-rod is guided at both covers, it tolerates side load better than a single-rod design and gives a symmetric mount; the rear rod can also carry a sensor flag. Fixed TPU bumpers decelerate the piston at both ends, speed runs 30-500 mm/s, and pressure spans 0.15-1.0 MPa (22-145 psi). At 0.5 MPa, plan on about 529 N of usable work rather than the full 881.2 N rating - roughly a 54 kg vertical pull with margin. Note this model is discontinued: the current-production drop-in is ACED50X120, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD50X120B Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X120B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X120B |
| Bore size | Ø50 mm |
| Stroke | 120 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 ACED50X120B (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 ACPD50X120B
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×120 | 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 ACPD50X120B Is Used
Reciprocating transfer slide
The through-rod drives a slide from either cover with equal 881.2 N thrust, so a pallet shuttle accelerates identically in both directions at 30-500 mm/s.
Two-position part present check
With the rear rod exposed, a flag plus CMSE or DMSE switches (fitted when the -S magnet is ordered) confirms both extend and retract on a 120 mm verification stroke.
Symmetric clamp fixture
Male threads on both rods let knuckles grip a workpiece from two sides with matched 1233.7 N force at 0.7 MPa - useful for centering a housing in a machining jig.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X120B with the ACED50X120B
At 881.2 N per direction, the 50 mm bore sits mid-range: drop to the 40 mm bore (571.8 N at 0.5 MPa) for lighter clamping, or step up to the 63 mm bore (1458.1 N) when the load grows. The 120 mm stroke is well inside the 250 mm standard limit for this bore, so no made-to-order build is needed. This unit has no magnet - order the -S code (ACPD50X120BSB) if you want CMSE or DMSE switches. FA/FB flange or LB foot brackets bolt to the standard face. Since ACPD is discontinued, specify ACED50X120 for new projects and verify the ISO 21287 footprint. Remember the piston drifts when air is lost; add a rod lock or pilot check if the load must stay put.
Replacement checklist
- ✓ Current-production ACE → ACED50X120B
- ✓ 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 ACPD50X120B FAQ
Yes - the double-rod design means both strokes use the rod-side area, so output is equal in extend and retract: 881.2 N at 0.5 MPa, 1233.7 N at 0.7 MPa, and up to 179.7 kgf at 1.0 MPa on the 50 mm bore. Rod is 16 mm with a male thread, ports are 1/8", and speed runs 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
AirTAC no longer produces the ACPD family. The current drop-in is ACED50X120 (swap the P for an E), an ISO 21287 compact cylinder in the same bore, stroke and force class with a matching mounting family. Because the ACP follows the older DIN layout, confirm the ISO 21287 mounting dimensions against your fixture before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACED50X120B
Send us the quantity and destination. We confirm price, stock and lead time on the ACED50X120B replacement — usually within 7-8 hours.