This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X70-10S, 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 ACPJ Adjustable Compact Cylinder ACPJ12X70-10S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X70-10S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 70mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X70-10S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke70 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X70-10S
- 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 ACPJ Adjustable Compact Cylinder ACPJ12X70-10S
A double acting compact cylinder with an adjustable extend stroke, the ACPJ12X70-10S carries a 12 mm bore and a 70 mm stroke trimmed by a 10 mm stop window, so the working range is 60-70 mm. 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. Note that the 70 mm stroke exceeds the 50 mm maximum standard stroke for bore 12, so this unit is made to order. This model is discontinued; the current-production replacement is the ACEJ12X70, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
The hard-anodized aluminium body with an S45C hard-chrome rod saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped fixture plates and guarding frames. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-of-stroke sensing. For sizing, plan on about 34 N of real work at 0.5 MPa (roughly 0.6 of the push figure), which lifts about 2.9 kg vertically with a 2:1 margin. Operating window is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper sits at both ends.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-10S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-10S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X70-10S |
| Bore size | Ø12 mm |
| Stroke | 70 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| 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 ACEJ12X70-10S (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACPJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-10S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 ACPJ Adjustable Compact Cylinder ACPJ12X70-10S Is Used
Micro part ejection from a jig
The 56.5 N push at 0.5 MPa is enough to kick small pressed or moulded parts out of a fixture nest, and the 60-70 mm trim range lets you tune the eject travel without re-plumbing.
Position-confirmed slide on a test rig
With the -S magnet fitted, a CMSE or DMSE switch signals full extension on an electronics test fixture, while the short body fits inside the rig's guarding.
Light clamping of PCB assemblies
About 34 N of usable force at 0.5 MPa holds a circuit board or small cover during a screwdriving or gluing step, with the TPU bumper softening the approach at both ends.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-10S with the ACEJ12X70-10S
Bore 12 delivers 56.5 N push at 0.5 MPa; step down only if your load is under about 34 N, and step up to bore 16 (100.5 N push at 0.5 MPa) if the 6 mm rod or the 42.4 N pull force feels marginal for your return stroke. The stop screw only shortens the extend stroke inside the 10 mm window - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Mounting uses FA/FB flanges or LB feet on the ISO 21287 face, and this -S unit already carries the optional magnet for CMSE / DMSE switches. Order the ACEJ12X70 as the current drop-in replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X70-10S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-10S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N. At 0.7 MPa the figures are 79.2 N push and 59.4 N pull. The theoretical maximum is 11.5 kgf at 1.0 MPa. For real work, budget roughly 34 N (about 0.6 of the push force), which corresponds to lifting about 2.9 kg vertically with a 2:1 margin. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The -10 code is a 10 mm adjustment window: an external stop screw shortens the 70 mm extend stroke on site, giving a usable range of 60-70 mm. It cannot lengthen the stroke past the ordered value, and it is an end stop only - it will not hold a load if air pressure is lost. The ACPJ family is discontinued; the ACEJ12X70 is the current ISO 21287 drop-in successor in the same bore, stroke and force class, so confirm its mounting dimensions before swapping. This unit's 70 mm stroke is a made-to-order value above the 50 mm standard maximum for bore 12.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X70-10S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X70-10S replacement — usually within 7-8 hours.