This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X70-75, 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 ACPJ12X70-75
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X70-75 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 ACEJ12X70-75 (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 → ACEJ12X70-75
- 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 ACPJ12X70-75
This is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 70 mm stroke on site within the ordered 75 mm window, giving a usable range of 0-70 mm. At 0.5 MPa the 12 mm bore pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs where a full-length body will not fit. Note the 70 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build.
Plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rated push), which lifts about 2.9 kg vertically with a 2:1 margin. The body is hard-anodized aluminium with an S45C hard-chrome rod and fixed TPU bumpers at both ends. No magnet is fitted on this version, so position switches cannot be mounted; order the -S code for the optional magnet that accepts CMSE / DMSE switches. This model is discontinued - the current drop-in is ACEJ12X70, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X70-75 |
| 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 ACEJ12X70-75 (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 ACPJ12X70-75
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -75 | 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 ACPJ12X70-75 Is Used
Multi-product ejection jig
A 56.5 N push at 0.5 MPa ejects small plastic caps or connector housings off a nest, and the 0-70 mm adjustable range handles several part lengths on one fixture.
Small-part press check station
With the optional -S magnet fitted, CMSE or DMSE switches flag end-of-stroke on a 70 mm verify stroke in electronics assembly cells.
Compact indexing stopper
The short body, about 50% shorter than an ISO 15552 profile cylinder, fits inside a conveyor side frame as a 70 mm part stopper on a packaging line.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75 with the ACEJ12X70-75
Size up if 56.5 N at 0.5 MPa is marginal: the 16 mm bore delivers 100.5 N push at the same pressure. If 56.5 N covers the job with margin, stay at 12 mm. The 75 mm window lets one cylinder serve several product lengths on the same fixture - set the stop once per changeover. Remember the stop screw is an end stop for the extend stroke only, not a mid-stroke lock: on air loss the piston still drifts, so do not rely on it to hold a load. FA/FB flange and LB foot mountings bolt to the standard face, and the female M3x0.5 rod thread suits I/Y knuckles. For new builds, specify ACEJ12X70 instead - this ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X70-75
- ✓ 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 ACPJ12X70-75 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum is 11.5 kgf at 1.0 MPa. The -75 code is a 75 mm adjustment window: the stop screw shortens the 70 mm extend stroke on site, so the usable range is 0-70 mm. It runs double acting on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, at 30-500 mm/s. The 70 mm stroke is a made-to-order length since the bore 12 standard maximum is 50 mm.
Only with the optional -S magnet code - this version has no magnet, so no CMSE or DMSE switch can be mounted. The ACPJ family is discontinued; the current-production drop-in is ACEJ12X70 in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, since the ACP was built to a DIN-standard compact footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X70-75
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X70-75 replacement — usually within 7-8 hours.