This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE12X40B, 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 ACP12X40B
The AirTAC ACP Compact Cylinder ACP12X40B is a double acting DIN-standard tight/compact air cylinder with a Ø12mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE12X40B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM3×0.5
- StatusDiscontinued → ACE12X40B
- 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 ACP12X40B
A double acting compact cylinder in the DIN-standard ACP series, the ACP12X40B drives a 6 mm hard-chrome S45C rod from a 12 mm bore over a 40 mm stroke. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The male rod thread (B code) and PT port thread come as coded, and the fixed TPU bumper at each end simply decelerates the piston - it never holds a load.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why this bore size suits slim fixtures and small guarding. Note this model is discontinued: the current-production successor is the ACE12X40, so confirm ISO 21287 mounting dimensions before swapping. The optional -S magnet enables CMSE / DMSE switches; without it no magnet is fitted.
Airtac ACP Compact Cylinder ACP12X40B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP12X40B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE12X40B |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACE12X40B (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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACE12X40B 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 ACP12X40B
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 ACP12X40B Is Used
Micro part ejection
Ejects small machined pins or plastic inserts from a nest; 56.5 N at 0.5 MPa is enough for parts under 30 g, and the 40 mm stroke clears shallow die pockets.
Compact gate latch
The male-threaded rod drives a latch hook inside a tight machine guard; with the -S magnet a CMSE switch confirms the locked position in a body half the length of a full profile cylinder.
Lab sample pusher
Advances sample vials into an analyzer station; the 5.8 kg vertical-lift equivalent at 0.5 MPa handles light trays, and M5x0.8 ports suit small manifold blocks.
Replacing the Airtac ACP Compact Cylinder ACP12X40B with the ACE12X40B
For a 40 mm stroke at this force level, compare the 16 mm bore (100.5 N push at 0.5 MPa) if the load sits near 56 N, or drop to a smaller stroke rather than oversizing. If the rod must hold position with air off, add a rod lock or pilot check valve - the bumper alone will not lock anything. Order the -S code only if CMSE / DMSE position sensing is needed, and choose FA/FB flange, LB foot or CA/CB clevis to match the fixture. Since ACP is discontinued, specify the ACE12X40 as the direct and verify the ISO 21287 mounting footprint.
Replacement checklist
- ✓ Current-production ACE → ACE12X40B
- ✓ 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 ACP12X40B FAQ
Push is 56.5 N and pull 42.4 N at 0.5 MPa; at 0.7 MPa push is 79.2 N and pull 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting, 12 mm bore, 40 mm stroke, 6 mm male-thread rod, M5x0.8 port, running on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um at 30-500 mm/s.
Order the ACE12X40, the ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class in a current-production short body. Confirm the ISO 21287 mounting dimensions against your fixture first, since the ACP followed the older DIN-standard layout, and add the -S code on the ACE if you need CMSE / DMSE sensing.
Request a Quote for the ACE12X40B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE12X40B replacement — usually within 7-8 hours.