This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED40X250 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED40X250 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 ACPD40X250
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD40X250 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 ACED40X250 (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 → ACED40X250
- 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 ACPD40X250
A double acting compact cylinder with a rod exiting both covers, the ACPD40X250 delivers an identical 571.8 N at 0.5 MPa (800.5 N at 0.7 MPa) on every stroke, since both sides work on the rod-side area. The 250 mm stroke is beyond the 200 mm standard limit for the 40 mm bore, so this unit is made to order. Its hard-anodized aluminium body keeps the mounting length roughly 50% shorter than an ISO 15552 profile cylinder, which is why it slots into tight gantries and guarded stations.
The through-rod resists rotation and side load and gives a symmetric mount, and the rear rod can carry a sensor flag in pick-and-place rigs. A fixed TPU bumper sits at each end to soften the stroke. Plan on about 343 N of usable push at 0.5 MPa, which lifts roughly 29 kg vertically with a 2:1 margin. Note: this model is discontinued; the current-production drop-in is the ACED40X250, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPD Double Rod Compact Cylinder ACPD40X250 Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD40X250 |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED40X250 |
| 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 ACED40X250 (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 ACPD40X250
| 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 ACPD40X250 Is Used
Symmetric CNC part ejector
The rear rod pushes finished 40 mm-bore workpieces out of a fixture while the front rod returns a stop pin, both strokes delivering 571.8 N at 0.5 MPa.
Conveyor guide-rail adjuster
A 250 mm made-to-order stroke lets packaging lines reposition guide rails across wide product changes, with the through-rod keeping the rail bracket square.
Flag carrier on a gantry loader
With the optional -S magnet ordered, CMSE or DMSE switches read position off the back-end rod, so a machine builder gets end-of-stroke signals without extra brackets.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD40X250 with the ACED40X250
At 40 mm bore you get 571.8 N both ways at 0.5 MPa; step down to the 32 mm bore (345.6 N) for lighter clamps or up to the 50 mm bore (881.2 N) for heavier tooling. The 250 mm stroke is a made-to-order length, since the standard maximum for this bore is 200 mm. Female M8x1.25 rod thread and 1/8" PT ports come as coded. FA/FB flange or LB foot mounts bolt to the ISO 21287 face. This model is discontinued - the ACED40X250 is the current drop-in, so verify ISO 21287 mounting dimensions before ordering. A plain double-rod cylinder will drift when air is lost, so add a rod lock or pilot check if the load must stay put.
Replacement checklist
- ✓ Current-production ACE → ACED40X250
- ✓ 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 ACPD40X250 FAQ
Because a rod exits both covers, force is equal in both directions: 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. Both strokes use the rod-side area, so push and pull are identical. Operating range is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
It is a non-standard, made-to-order stroke, so lead time and price differ from catalog lengths. Also note this ACPD model is discontinued: the current-production replacement is the ACED40X250 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP follows the older DIN-standard footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACED40X250
Send us the quantity and destination. We confirm price, stock and lead time on the ACED40X250 replacement — usually within 7-8 hours.