This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED50X40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED50X40S 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 ACPD50X40S
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD50X40S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø50mm bore and 40mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED50X40S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM10×1.5
- StatusDiscontinued → ACED50X40S
- 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 ACPD50X40S
This double acting compact cylinder carries a rod through both covers, so its 50 mm bore delivers the same 881.2 N at 0.5 MPa (1233.7 N at 0.7 MPa) whether it extends or retracts, because both strokes work on the rod-side area. The through-rod resists rotation and side load, gives a symmetric mounting face, and the rear rod can carry a sensor flag. A fixed TPU bumper sits at each end, and travel speed runs 30-500 mm/s.
The hard-anodized aluminium body follows the ISO 21287 short format, cutting roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and gantries. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing. Note that ACPD is discontinued: the current-production successor is the ACED50X40, a drop-in in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on about 528 N (roughly 54 kg) of usable push at 0.5 MPa, which lifts about 45 kg vertically with a 2:1 margin.
Airtac ACPD Double Rod Compact Cylinder ACPD50X40S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD50X40S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED50X40S |
| Bore size | Ø50 mm |
| Stroke | 40 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 ACED50X40S (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 ACPD50X40S
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 ACPD50X40S Is Used
Symmetric clamping fixture
The through-rod lets a machining fixture clamp from either end with the same 881.2 N at 0.5 MPa, ideal for a 40 mm-stroke pallet clamp on a CNC line.
Bidirectional product pusher
With equal force extending and retracting, the cylinder can push cartons off a packaging conveyor in both stroke directions without a larger bore.
Position-flagged lift station
The rear rod carries a sensor flag while the front rod lifts about 45 kg vertically at 0.5 MPa, and the fitted -S magnet feeds CMSE / DMSE switches for stroke confirmation.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD50X40S with the ACED50X40S
At 50 mm bore the rod-side force of 881.2 N at 0.5 MPa suits clamping and press-fit work in the 50-80 kg range; step down to ACPD40 (571.8 N at 0.5 MPa) for lighter loads or up to ACPD63 (1458.1 N at 0.5 MPa) when more thrust is needed. Stroke 40 mm is well inside the 250 mm maximum standard stroke for this bore. Because a plain double-rod cylinder drifts when air is lost, add a rod lock or pilot check valve if the load must stay put. FA/FB flange and LB foot mountings bolt straight to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches. Order the ACED50X40 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACED50X40S
- ✓ 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 ACPD50X40S FAQ
Yes - the double-rod design means both strokes use the rod-side area, so force is equal either way: 881.2 N at 0.5 MPa and 1233.7 N at 0.7 MPa, with a maximum of 179.7 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the 16 mm rod ends in a female M10x1.5 thread with a 1/8" port.
Order the ACED50X40: swap the P for an E and you get the current-production ISO 21287 compact cylinder in the same 50 mm bore, 40 mm stroke and force class. It keeps the short body that saves about 50% of the mounting length of an ISO 15552 profile cylinder, plus FA/FB flange and LB foot options and the optional -S magnet for CMSE / DMSE switches. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP was built to the DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACED50X40S
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