This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACED40X275S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACED40X275S 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.

The AirTAC Airtac ACPD Double Rod Compact Cylinder ACPD40X275S is a double acting, double rod DIN-standard tight/compact air cylinder with a Ø40mm bore and 275mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACED40X275S (ISO 21287 ACE), in the same bore, stroke and force class.
This is a double acting compact cylinder with a rod leaving both covers, so the 40 mm bore delivers the same 571.8 N at 0.5 MPa (800.5 N at 0.7 MPa) whether it pushes or pulls, because both strokes work on the rod-side area. The through-rod resists rotation and light side load, gives a symmetric mounting face, and the rear rod can carry a sensor flag. The 275 mm stroke is longer than the 200 mm standard maximum for this bore, so it is a made-to-order build.
The hard-anodized aluminium body is an ISO 21287 short design that saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which matters in deep-stroke but space-limited machines. A fixed TPU bumper sits at each end. The S code on this model means the optional -S magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clamped on for end-position sensing. Note this model is discontinued; the current-production replacement is the ACED40X275, and you should confirm the ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on about 343 N of usable work at 0.5 MPa, which lifts roughly 29 kg vertically with a 2:1 margin.
| Model | Airtac ACPD Double Rod Compact Cylinder ACPD40X275S |
|---|---|
| Series | ACPD DIN compact cylinder (discontinued) |
| Replacement | ACED40X275S |
| Bore size | Ø40 mm |
| Stroke | 275 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 ACED40X275S (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.
| 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).
| ACPD | DIN compact cylinder (double-rod, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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).
The through-rod drives a pallet slide in both directions with equal 571.8 N force at 0.5 MPa, while the rear rod carries a CMSE switch flag for mid-stroke confirmation on the 275 mm travel.
A symmetric double-rod mount keeps the gripper head square on a compact gantry where the short ISO 21287 body fits between guide rails, lifting parts of about 29 kg with a 2:1 margin.
Equal push and pull force lets one arm both eject cartons and retract the pusher on a packaging conveyor, with DMSE switches confirming each end of the long made-to-order stroke.
At 40 mm bore you get 571.8 N both ways at 0.5 MPa; step down to a 32 mm bore for 345.6 N or up to 50 mm for 881.2 N if the load changes. Remember that a plain double-rod cylinder drifts when air is lost, so add a rod lock or pilot check if the load must stay put. This unit already carries the optional -S magnet for CMSE / DMSE switches, and FA/FB flange or LB foot mounts bolt to the ISO 21287 face. Since the ACPD is discontinued, order the ACED40X275 as the drop-in successor and verify the mounting dimensions against the ISO 21287 drawing.
Replacement checklist
Yes. Because a rod exits both covers, both strokes use the rod-side area: 571.8 N at 0.5 MPa and 800.5 N at 0.7 MPa, equal in push and pull. At 1.0 MPa the maximum is 116.6 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed range 30-500 mm/s, and air filtered to 40 um.
Strokes beyond 200 mm are made to order, so this 275 mm unit is a non-standard build. The ACPD family is discontinued; the current-production replacement is the ACED40X275 (P changed to E), a drop-in in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Send us the quantity and destination. We confirm price, stock and lead time on the ACED40X275S replacement — usually within 7-8 hours.