This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE40X90B, the same code under the new prefix. 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 ACP40X90B
The AirTAC ACP Compact Cylinder ACP40X90B is a double acting DIN-standard tight/compact air cylinder with a Ø40mm bore and 90mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE40X90B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke90 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → ACE40X90B
- 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 ACP40X90B
The ACP40X90B is a double acting compact cylinder in the DIN-standard ACP series, with a 40 mm bore and 90 mm stroke driving a 12 mm hard-chrome S45C rod through a male thread (the B code). At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, and its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight guards and fixtures. Air supply runs 0.15-1.0 MPa (22-145 psi) with speeds of 30-500 mm/s.
This exact model is discontinued; the current-production direct is ACE40X90, which matches the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping. The fixed TPU bumper at each end only softens end-of-stroke contact; it never holds a load, so add a rod lock or pilot check valve if the rod must stay put when air is lost. FA/FB flange, LB foot and CA/CB clevis mounts bolt to the standard face, and the optional -S magnet enables CMSE / DMSE switches.
Airtac ACP Compact Cylinder ACP40X90B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP40X90B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE40X90B |
| Bore size | Ø40 mm |
| Stroke | 90 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 ACE40X90B (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 ACE40X90B 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 ACP40X90B
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 (double rod, adjustable stroke).
Where the Airtac ACP Compact Cylinder ACP40X90B Is Used
CNC fixture clamping
The 628.3 N push at 0.5 MPa clamps steel brackets in milling fixtures, and the short body fits between jaws where a full-length cylinder cannot.
Carton press-down station
A 90 mm stroke presses flaps or inserts on a packaging line running 30-500 mm/s, with the fixed TPU bumper softening each end of travel.
Replacing the Airtac ACP Compact Cylinder ACP40X90B with the ACE40X90B
Size between neighbours: a 32 mm bore gives 402.1 N push at 0.5 MPa, while a 50 mm bore reaches 981.7 N, so pick the 40 mm when your load sits between roughly 250 and 600 N. The 90 mm stroke is well inside the 200 mm maximum standard stroke for this bore, so it is a catalogue item. Choose the B code for a male rod thread, PT ports, and add the -S suffix only if you need position sensing. Order ACE40X90 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACE40X90B
- ✓ 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 ACP40X90B FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa push rises to 879.6 N and pull to 800.5 N; theoretical maximum is 128.1 kgf at 1.0 MPa. It is double acting, takes air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), and runs 30-500 mm/s from -20 to +70 C with a 1/8" port.
No - the ACP family is discontinued. Order ACE40X90, the ISO 21287 successor with the same 40 mm bore, 90 mm stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN-standard footprint. Mounting options (FA/FB flange, LB foot, CA/CB clevis) and the optional -S magnet for CMSE / DMSE switches carry over in concept.
Request a Quote for the ACE40X90B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE40X90B replacement — usually within 7-8 hours.