This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED40X250B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED40X250B 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 ACPD40X250B
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD40X250B is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø40mm bore and 250mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED40X250B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- StatusDiscontinued → ACED40X250B
- 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 ACPD40X250B
Double acting with a rod leaving both covers, the ACPD40X250B delivers the same 571.8 N at 0.5 MPa (800.5 N at 0.7 MPa) on every stroke, because both faces work on the rod-side area. The through-rod resists rotation and side load, gives a symmetric mount, and the rear rod can carry a sensor flag. A fixed TPU bumper sits at each end, and travel speed spans 30-500 mm/s. Note: the 250 mm stroke exceeds the 200 mm standard maximum for bore 40, so this unit is made to order.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight gantries and guarding. The hard-anodized aluminium body carries an S45C hard-chrome rod, running on 0.15-1.0 MPa (22-145 psi) of clean air. Plan on about 343 N of usable work at 0.5 MPa, which lifts roughly 17 kg vertically with a 2:1 margin. This model is discontinued; the current drop-in is ACED40X250.
Airtac ACPD Double Rod Compact Cylinder ACPD40X250B Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD40X250B |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED40X250B |
| Bore size | Ø40 mm |
| Stroke | 250 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 ACED40X250B (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 ACPD40X250B
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×250 | 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 ACPD40X250B Is Used
Reciprocating transfer arm
The through-rod drives a workpiece carrier forward and back between two assembly stations, with equal 571.8 N force in each direction at 0.5 MPa.
Gantry position flag
The rear rod carries a switch flag so a vision camera on a packaging gantry can confirm mid-stroke position, using the optional -S magnet with CMSE or DMSE switches.
Clamp-and-counterclamp fixture
Both rods press simultaneously on a machined housing in a CNC fixture, doubling the effective grip from a single 40 mm bore at 0.7 MPa.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD40X250B with the ACED40X250B
At 571.8 N per side, bore 40 sits between bore 32 (345.6 N) and bore 50 (881.2 N) at 0.5 MPa, so step up to 50 if the load exceeds about 343 N of real work. The plain double-rod piston drifts when air is lost, so add a rod lock or pilot check for held loads. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switches. This model is discontinued - order ACED40X250 and confirm the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACED40X250B
- ✓ 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 ACPD40X250B FAQ
Because a rod exits both covers, force is identical both ways: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, with a maximum of 116.6 kgf at 1.0 MPa. There is no larger push than pull on this double-rod cylinder.
No, but it is a made-to-order stroke, so lead time applies. Also note this model is discontinued: the current-production ACED40X250 matches the same bore, stroke and force class, so confirm the ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACED40X250B
Send us the quantity and destination. We confirm price, stock and lead time on the ACED40X250B replacement — usually within 7-8 hours.