This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACE40X20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACE40X20B 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 ACP40X20B
The AirTAC Airtac ACP Compact Cylinder ACP40X20B is a double acting DIN-standard tight/compact air cylinder with a Ø40mm bore and 20mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE40X20B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke20 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → ACE40X20B
- 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 ACP40X20B
The ACP40X20B is a double acting compact cylinder in the discontinued AirTAC ACP DIN-standard series, with a 40 mm bore and a short 20 mm stroke. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight clamping fixtures and guarded stations where a full-length body will not reach. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, rising to 879.6 N at 0.7 MPa, with a theoretical peak of 128.1 kgf at 1.0 MPa.
The B code gives a male rod thread on the 12 mm S45C hard-chrome rod, and the hard-anodized aluminium body carries 1/8" ports. A fixed TPU bumper sits at both ends to soften end-of-travel contact. Plan on about 377 N of real work at 0.5 MPa rather than the full rating, which is roughly a 32 kg vertical lift with a 2:1 margin. This model is discontinued; the current-production drop-in is ACE40X20, so confirm ISO 21287 mounting dimensions before swapping. The magnet is not fitted - order the -S code to enable CMSE / DMSE switches.
Airtac ACP Compact Cylinder ACP40X20B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP40X20B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE40X20B |
| Bore size | Ø40 mm |
| Stroke | 20 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 ACE40X20B (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 ACE40X20B 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 ACP40X20B
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | 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 ACP40X20B Is Used
Press-fit bushings in housings
The 628.3 N push at 0.5 MPa seats small bushings and dowels in automotive bracket assemblies, and the 20 mm stroke suits short in-and-out press stations.
Clamping on CNC fixtures
A 32 kg vertical-lift equivalent and a short body make this cylinder a fit for side clamps on machining fixtures where a full-length body would foul the cutter path.
Carton hold-down on packing lines
The male-thread rod (B code) takes a knuckle to hold cartons flat during taping, with the fixed TPU bumper softening each 20 mm stroke at 30-500 mm/s.
Replacing the Airtac ACP Compact Cylinder ACP40X20B with the ACE40X20B
Size both ways: if 628.3 N at 0.5 MPa is more than your jig needs, the ACP32X25 delivers 402.1 N in the same compact format; if you need more, the ACP50X20 reaches 981.7 N. Note that a plain ACP40X20B drifts when air is lost - add a rod lock or pilot check valve if the load must hold. FA/FB flange, LB foot and CA/CB clevis mounts bolt to the standard face, and the optional -S magnet enables CMSE / DMSE position switches. For new projects, order the ACE40X20 instead, since ACP is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACE40X20B
- ✓ 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 ACP40X20B FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa, 879.6 N push and 800.5 N pull; theoretical maximum 128.1 kgf at 1.0 MPa. It is a double acting compact cylinder, 40 mm bore, 20 mm stroke, 12 mm male-thread rod, 1/8" PT ports, operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um.
Order ACE40X20, the current-production ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class in a matching short body. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions before swapping. Also note the magnet is not fitted on this unit; the -S code is what enables CMSE / DMSE switches.
Request a Quote for the ACE40X20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE40X20B replacement — usually within 7-8 hours.