This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED40X50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED40X50S 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 ACPD40X50S
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD40X50S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø40mm bore and 50mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED40X50S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- StatusDiscontinued → ACED40X50S
- 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 ACPD40X50S
A double acting compact cylinder with a rod leaving both covers, the ACPD40X50S pushes and pulls with identical output: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa in either direction, since both strokes work on the rod-side area of the 40 mm bore. The 12 mm through-rod resists rotation and side load, carries a symmetric mount, and leaves the rear rod free for a sensor flag. At 0.5 MPa the realistic working effort is about 343 N, which lifts roughly 29 kg vertically with a 2:1 margin - enough to match a small fixture or part weight directly.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantries. A hard-anodized aluminium body pairs with an S45C hard-chrome rod, a fixed TPU bumper sits at each end, and speeds run 30-500 mm/s. This model carries the optional -S magnet, so CMSE / DMSE switches can be mounted for position feedback. Note: the ACPD family is discontinued - the current-production drop-in is the ACED40X50, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD40X50S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD40X50S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED40X50S |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting, double rod |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACED40X50S (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 (Ø40mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 572 N |
| 0.7 MPa | 800 N |
| Max (@1.0 MPa) | 117 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 ACPD40X50S
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACPD40X50S Is Used
Symmetric CNC fixture clamping
The equal 571.8 N push and pull at 0.5 MPa clamps and unclamps a machining fixture with one air circuit, while the 50 mm stroke suits shallow part pockets.
Two-way conveyor gate diverter
A rod on each cover lets the gate push product off the line in either stroke direction with identical 800.5 N force at 0.7 MPa, and the rear rod can carry a flag for a switch.
Pick-and-place z-axis lift
The through-rod resists rotation on a small assembly-cell z-axis, lifting about 29 kg vertically at 0.5 MPa with a 2:1 margin over the 50 mm travel.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD40X50S with the ACED40X50S
At 50 mm stroke this 40 mm bore delivers 571.8 N both ways at 0.5 MPa. Step down to a 32 mm bore (345.6 N) for lighter clamping, or up to a 50 mm bore (881.2 N) when the load grows. Remember that a plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check if the load must stay put. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the -S magnet on this unit accepts CMSE / DMSE switches. For new projects, order the ACED40X50 instead, as the ACPD line is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACED40X50S
- ✓ 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 ACPD40X50S FAQ
Yes - the double-rod design means both strokes use the rod-side area, so force is equal both ways: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, with a peak of 116.6 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 1/8" port serves the 40 mm bore. The fixed TPU bumper at each end only decelerates the piston at the ends of travel.
Order the ACED40X50, the current-production ISO 21287 successor: swap the P for an E and you keep the same 40 mm bore, 50 mm stroke and force class. Because the ACP was built to a DIN-standard footprint, confirm the ISO 21287 mounting dimensions against your fixture before swapping. FA/FB flange and LB foot options carry over, and the -S magnet code still enables CMSE / DMSE switch mounting.
Related AirTAC ACE Cylinders
Request a Quote for the ACED40X50S
Send us the quantity and destination. We confirm price, stock and lead time on the ACED40X50S replacement — usually within 7-8 hours.