This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X120SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X120SB 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 ACPD50X120SB
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X120SB 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 ACED50X120SB (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 → ACED50X120SB
- 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 ACPD50X120SB
A double acting compact cylinder with a rod leaving both covers, the ACPD50X120SB pushes and pulls with the same 881.2 N at 0.5 MPa (1233.7 N at 0.7 MPa) because both strokes work on the rod-side area of the 50 mm bore. The through-rod resists rotation and side load, gives a symmetric mount, and the rear rod can carry a sensor flag, while fixed TPU bumpers pad both ends of the 120 mm stroke. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof tested to 1.5 MPa (215 psi), from -20 to +70 C at 30-500 mm/s.
The hard-anodized aluminium body follows the ISO 21287 short format, so it saves roughly 50% of the mounting length of an ISO 15552 profile cylinder - useful inside tight welding jigs or press fixtures. With the -S magnet this model carries, CMSE or DMSE reed and solid-state switches mount directly on the body. Note the S45C hard-chrome rod ends in a male thread (the B code). This model is discontinued: the current drop-in is ACED50X120, same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping. As a planning figure, treat about 528 N (roughly 54 kg of thrust) as the usable working force at 0.5 MPa rather than the full rating.
Airtac ACPD Double Rod Compact Cylinder ACPD50X120SB Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X120SB |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X120SB |
| 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 ACED50X120SB (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 ACPD50X120SB
| 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 ACPD50X120SB Is Used
Weld jig clamping fixture
The 881.2 N equal push and pull lets one ACPD50X120SB both clamp and retract a weld-nest clamp arm inside a jig where the short ISO 21287 body is the only thing that fits.
Push-pull transfer slide
A packaging machine shuttle that must index a tray 120 mm out and back with identical force both ways uses the through-rod, with the rear rod carrying a CMSE switch flag for position feedback.
Press-head return station
On a small benchtop marking press, the 50 mm bore lifts and lowers the head with matched 1233.7 N at 0.7 MPa, and the fixed TPU bumpers soften the ends of the stroke.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X120SB with the ACED50X120SB
At 881.2 N per direction, the 50 mm bore sits between the 40 mm (571.8 N) and 63 mm (1458.1 N) double-rod sizes at 0.5 MPa - step down if your fixture needs less, up if the 120 mm stroke carries a heavier slide. The through-rod suits symmetric tooling and the rear rod can drive a switch flag; keep in mind the piston drifts if air is lost, so add a rod lock or pilot check for a held load. FA/FB flange or LB foot mounts bolt to the ISO 21287 face, and the -S magnet on this unit accepts CMSE / DMSE switches. Since ACPD is discontinued, order ACED50X120 as the current-production equivalent and verify the mounting dimensions against the ISO 21287 drawing.
Replacement checklist
- ✓ Current-production ACE → ACED50X120SB
- ✓ 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 ACPD50X120SB FAQ
Yes - the double-rod design means a rod exits both covers, so both strokes use the rod-side area of the 50 mm bore. You get 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa in each direction, equal push and pull, with a maximum of 179.7 kgf at 1.0 MPa. For sizing, plan on roughly 528 N (about 54 kg of thrust) as usable working force at 0.5 MPa.
Order ACED50X120, the current-production ISO 21287 successor: swap the P for an E and you keep the same 50 mm bore, 120 mm stroke and force class. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions (FA/FB flange or LB foot face) against your fixture before the swap. This unit already carries the optional -S magnet, so CMSE / DMSE switches can be transferred to the replacement if you order it with -S as well.
Related AirTAC ACE Cylinders
Request a Quote for the ACED50X120SB
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