This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACE40X70B, 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 ACP40X70B
The AirTAC ACP Compact Cylinder ACP40X70B 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 ACE40X70B (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 → ACE40X70B
- 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 ACP40X70B
A double acting compact cylinder in the DIN-standard ACP series, the ACP40X70B pairs a 40 mm bore with a 70 mm stroke and a male-threaded 12 mm rod (the B code). 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. The hard-anodized aluminium body with an S45C hard-chrome rod runs on 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, and air enters through a 1/8" port.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why this bore class fits so well inside guarding, slide fixtures and gantry pick stations. Note that this unit is discontinued: the current-production direct is the ACE40X70, so confirm the ISO 21287 mounting dimensions before swapping. A fixed TPU bumper at each end simply decelerates the piston; it never holds a load, and without the optional -S magnet no CMSE or DMSE switch can be fitted.
Airtac ACP Compact Cylinder ACP40X70B Technical Specifications
| Model | Airtac ACP Compact Cylinder ACP40X70B |
|---|---|
| Series | ACP DIN compact cylinder (discontinued) |
| Replacement | ACE40X70B |
| 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 ACE40X70B (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 ACE40X70B 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 ACP40X70B
| 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 ACP40X70B Is Used
Fixture clamping on CNC pallets
The 628.3 N push at 0.5 MPa clamps aluminium or small steel workpieces in machining fixtures, and the 70 mm stroke clears part loading inside tight fixture plates.
Palletizer push-off arm
With about 38 kg of practical vertical or lateral capacity at 0.5 MPa, this bore nudges cartons off a conveyor lane where a full-length body would not fit.
Press-fit pin insertion
The male rod thread (B code) takes an I/Y knuckle for short press or insertion moves on connector and terminal assemblies, running 30-500 mm/s.
Replacing the Airtac ACP Compact Cylinder ACP40X70B with the ACE40X70B
For a 70 mm stroke in the 600 N class, the 40 mm bore is the natural pick; step down to the 32 mm bore (402.1 N push at 0.5 MPa) for lighter clamping, or up to the 50 mm bore (981.7 N) when the load grows. The B code gives a male rod thread, and the PT port thread suits standard fittings. If the load must stay put when air is lost, add a rod lock or pilot check valve rather than relying on the bumper. FA/FB flange, LB foot and CA/CB clevis mountings bolt straight on, and ordering the -S code adds the optional magnet for CMSE / DMSE switches. Buy the ACE40X70 instead - this ACP model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACE40X70B
- ✓ 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 ACP40X70B 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; the theoretical maximum is 128.1 kgf at 1.0 MPa. The model is discontinued - the current-production replacement is the ACE40X70 (swap the P for an E), which matches the same 40 mm bore, 70 mm stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN standard.
It is a short-body compact cylinder with a hard-anodized aluminium body, threaded aluminium covers, an S45C hard-chrome rod and a fixed TPU bumper at each end. Switches are possible only when you order the optional -S magnet code; this unit (no S) has no magnet, so CMSE or DMSE reed or solid-state switches cannot be mounted. Mounting options include FA/FB flange, LB foot and CA/CB clevis.
Request a Quote for the ACE40X70B
Send us the quantity and destination. We confirm price, stock and lead time on the ACE40X70B replacement — usually within 7-8 hours.