This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE40X70S, 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 ACP40X70S
The AirTAC ACP Compact Cylinder ACP40X70S is a double acting DIN-standard tight/compact air cylinder with a Ø40mm bore and 70mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACE40X70S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM8×1.25
- StatusDiscontinued → ACE40X70S
- 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 ACP40X70S
The ACP40X70S is a double acting compact cylinder in the discontinued AirTAC ACP DIN-standard series, with a 40 mm bore and 70 mm stroke. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa those rise to 879.6 N and 800.5 N, with a theoretical ceiling of 128.1 kgf at 1.0 MPa. Because the short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight jigs and guarding where a full-length body will not fit. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the tube.
The hard-anodized aluminium body carries a fixed TPU bumper at both ends and the S45C hard-chromed 12 mm rod ends in a female M8x1.25 thread. Note that this model is discontinued: the current-production direct is ACE40X70, so confirm the ISO 21287 mounting dimensions before swapping.
Airtac ACP Compact Cylinder ACP40X70S Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP40X70S |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE40X70S |
| Bore size | Ø40 mm |
| Stroke | 70 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 ACE40X70S (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 ACE40X70S 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 ACP40X70S
| ACP | DIN compact cylinder (double-acting, discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 ACP40X70S Is Used
Fixture clamping on CNC machining centres
The 628.3 N push at 0.5 MPa holds aluminium housings against locators in a 70 mm-stroke clamp slot where a full-length body would foul the fixture plate.
Packaging line pusher stations
Running at 30-500 mm/s, the compact body diverts cartons between conveyor lanes, with CMSE switches on the fitted -S magnet confirming extend and retract positions.
Small press and riveting benches
At 0.7 MPa the 879.6 N push drives light riveting and staking heads on bench tooling, with the fixed TPU bumper softening end-of-stroke contact.
Replacing the Airtac ACP Compact Cylinder ACP40X70S with the ACE40X70S
At 628.3 N push and 571.8 N pull at 0.5 MPa, the 40 mm bore suits clamping and pressing fixtures in the 35-40 kgf working band. If your load sits below about 245 N, the 25 mm bore (245.4 N push) saves space and air; if you need over 900 N, step up to the 50 mm bore at 981.7 N. Remember the piston drifts when air is lost, so add a rod lock or pilot check valve for held loads. FA/FB flange, LB foot and CA/CB clevis mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Order ACE40X70 as the current replacement and verify ISO 21287 hole patterns first.
Replacement checklist
- ✓ Current-production ACE → ACE40X70S
- ✓ 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 ACP40X70S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa it pushes 879.6 N and pulls 800.5 N; the theoretical maximum is 128.1 kgf at 1.0 MPa. 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. It is double acting with a fixed TPU bumper at both ends and a 12 mm rod with female M8x1.25 thread.
Order ACE40X70, the current-production ISO 21287 successor: swap the P for an E and you get the same 40 mm bore, 70 mm stroke and force class in a matching short body. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions and FA/FB, LB or CA/CB hole patterns before swapping. The ACE also carries the optional -S magnet for CMSE / DMSE switches, and related types such as ACPD, ACPJ, ASP and ATP all map into the ACE family.
Request a Quote for the ACE40X70S
Send us the quantity and destination. We confirm price, stock and lead time on the ACE40X70S replacement — usually within 7-8 hours.