This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE40X250S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE40X250S 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 ACP Compact Cylinder ACP40X250S
The AirTAC Airtac ACP Compact Cylinder ACP40X250S is a double acting 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 ACE40X250S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke250 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → ACE40X250S
- 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 ACP Compact Cylinder ACP40X250S
Double acting DIN-standard compact cylinder with a 40 mm bore and a made-to-order 250 mm stroke, the ACP40X250S pushes 628.3 N and pulls 571.8 N at 0.5 MPa (879.6 N / 800.5 N at 0.7 MPa). Its hard-anodized aluminium body is roughly 50% shorter than an ISO 15552 profile cylinder, so the long 250 mm travel still fits shallow guards and sliding gantries. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the barrel for end-of-stroke sensing.
At the rod end you get a female M8x1.25 thread on a 12 mm S45C hard-chrome rod, with 1/8" ports and a fixed TPU bumper at both ends. Divide the 628.3 N push by gravity and halve it for a 2:1 margin and this cylinder lifts about 32 kg vertically - enough for a loaded palletizing fixture or a die cart. Note the ACP line is discontinued: the current-production drop-in is ACE40X250, so confirm ISO 21287 mounting dimensions before you swap.
Airtac ACP Compact Cylinder ACP40X250S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP40X250S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE40X250S |
| Bore size | Ø40 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| 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 ACE40X250S (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 572 N |
| 0.7 MPa | 880 N | 800 N |
| Max (@1.0 MPa) | 128 kgf | |
The ACE40X250S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACP Compact Cylinder ACP40X250S
| ACP | DIN compact cylinder (double-acting, 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 ACP Compact Cylinder ACP40X250S Is Used
Vertical lift on a packaging machine
A 250 mm stroke raising a 30 kg product tray between an infeed conveyor and a carton magazine, sized with margin from the 32 kg vertical-lift equivalent at 0.5 MPa.
Slide feed on a CNC bar puller
Compact body tucked beside a lathe spindle pushing bar stock into collets, where the short ISO 21287 footprint beats a full-length profile cylinder and the -S magnet signals full extension.
Press-fit station in an electronics line
Applying about 377 N of usable force to seat connectors into PCB housings, with CMSE switches confirming both ends of the 250 mm travel before the next pallet indexes.
Replacing the Airtac ACP Compact Cylinder ACP40X250S with the ACE40X250S
Size both ways: a 32 mm bore gives 402.1 N push at 0.5 MPa, while a 50 mm bore reaches 981.7 N - pick the 40 mm when your load sits between roughly 250 and 600 N. Plan on about 377 N of real work (0.6 of the rated push) rather than the full 628.3 N. Remember the piston drifts when air is lost, so add a rod lock or pilot check valve if the load must stay put. The 250 mm stroke is beyond the 200 mm standard for this bore, so it is made to order. FA/FB flange, LB foot and CA/CB clevis brackets bolt to the same face, and the -S magnet is already fitted for CMSE / DMSE switches. Order ACE40X250 as the current replacement and verify ISO 21287 hole patterns.
Replacement checklist
- ✓ Current-production ACE → ACE40X250S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACP Compact Cylinder ACP40X250S FAQ
Push is 628.3 N and pull 571.8 N at 0.5 MPa; at 0.7 MPa push rises to 879.6 N and pull to 800.5 N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. It is double acting with a 40 mm bore, 250 mm made-to-order stroke, 12 mm rod with female M8x1.25 thread, 1/8" ports, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s and a fixed TPU bumper at both ends. The model is discontinued; ACE40X250 is the drop-in successor.
The hard-anodized aluminium body follows the short ISO 21287 format, saving about 50% of the mounting length of an ISO 15552 profile cylinder, which matters when a 250 mm stroke has to fit inside a guarded slide. Because this model carries the optional -S magnet, CMSE or DMSE reed and solid-state switches clamp directly onto the barrel for position feedback. Before ordering, confirm the ISO 21287 mounting dimensions against your fixture, since ACP is DIN-standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACE40X250S
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