This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED40X250S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED40X250S 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 ACPD40X250S
The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD40X250S 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 ACED40X250S (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 → ACED40X250S
- 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 ACPD40X250S
A double acting compact cylinder with a rod leaving both covers, the ACPD40X250S delivers 571.8 N at 0.5 MPa in either direction because both strokes work on the rod-side area. The 250 mm stroke is above the 200 mm standard limit for the 40 mm bore, so it is made to order. The hard-anodized aluminium body keeps the mounting length about 50% shorter than an ISO 15552 profile cylinder, which is why it fits 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. Fixed TPU bumpers sit at both ends and the rod runs 30-500 mm/s. With the -S magnet fitted, CMSE or DMSE reed and solid-state switches mount directly on the body. This model is discontinued: the current-production drop-in is ACED40X250, so confirm ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on roughly 343 N (about 35 kgf) of usable push at 0.5 MPa rather than the full 571.8 N rating.
Airtac ACPD Double Rod Compact Cylinder ACPD40X250S Technical Specifications
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD40X250S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED40X250S |
| 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 ACED40X250S (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 ACPD40X250S
| 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 ACPD40X250S Is Used
Reciprocating conveyor pusher
The through-rod drives a pusher bar from one side while the rear rod carries a switch flag, giving 571.8 N at 0.5 MPa to divert cartons on a packaging line.
Symmetric clamp fixture
Equal force in both directions lets one cylinder clamp and release a machining fixture with identical 800.5 N at 0.7 MPa, no reverse-bore derating.
Small vertical lift station
With a 2:1 margin the rod-side force lifts about 29 kg vertically, enough for raising gauge plates or small pallets in an assembly cell.
Replacing the Airtac ACPD Double Rod Compact Cylinder ACPD40X250S with the ACED40X250S
Size both ways: if 571.8 N at 0.5 MPa is more than the job needs, the ACPD32X250-class bore gives 345.6 N; if you need more, the 50 mm bore reaches 881.2 N. Note the 250 mm stroke is a made-to-order length for both bores. Remember that a plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check for a held load. FA/FB flange, LB foot and clevis options bolt to the ISO 21287 face, and the -S magnet enables CMSE / DMSE switches. Order ACED40X250 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACED40X250S
- ✓ 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 ACPD40X250S FAQ
Because a rod exits both covers, force is equal both ways: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, on the rod-side area. Maximum force at 1.0 MPa is 116.6 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, air filtered to 40 um, speed 30-500 mm/s.
The 40 mm bore tops out at 200 mm as a standard stroke, so 250 mm is made to order. This ACPD model is also discontinued; the current-production drop-in is ACED40X250 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions and the FA/FB or LB bracket fit before swapping, and note the fixed TPU bumper only decelerates at the ends - it never holds a load.
Related AirTAC ACE Cylinders
Request a Quote for the ACED40X250S
Send us the quantity and destination. We confirm price, stock and lead time on the ACED40X250S replacement — usually within 7-8 hours.