This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X70-75B, 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 ACPJ12X70-75B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X70-75B 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 ACEJ12X70-75B (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 → ACEJ12X70-75B
- 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 ACPJ12X70-75B
Double acting and adjustable, the ACPJ12X70-75B is a discontinued DIN-standard compact cylinder with a 12 mm bore, a 70 mm made-to-order stroke (above the 50 mm standard limit for this bore) and a 75 mm adjustment window. A stop screw trims the extend stroke on site, so the usable range is 0-70 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those figures rise to 79.2 N and 59.4 N, with a theoretical 11.5 kgf at 1.0 MPa. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits shallow jigs and tight guards.
The male rod thread (B code) takes an external knuckle directly, and the port is M5x0.8. Plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rated push), which lifts about 2.8 kg vertically with a 2:1 margin. The body is hard-anodized aluminium with an S45C hard-chrome rod, fixed TPU bumpers at both ends, and a speed range of 30-500 mm/s. No magnet is fitted on this version; the optional -S code adds one for CMSE / DMSE switches. This model is discontinued - the current drop-in is the ACEJ12X70, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X70-75B |
| 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 ACEJ12X70-75B (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 ACPJ12X70-75B
| 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 ACPJ12X70-75B Is Used
Small-parts ejection in plastic molding
A 56.5 N push at 0.5 MPa clears thin ABS or PP parts from shallow cavities, and the 0-70 mm adjustable range lets the operator dial the eject travel per mold.
Bench-top press for connector assembly
With about 34 N of usable force at 0.5 MPa, this bore presses crimp terminals and micro-switches in electronics workcells where a full-length cylinder will not fit.
Light lift-and-lower in lab automation
The rod lifts about 2.8 kg vertically with a 2:1 margin, enough for sample trays and microplate stacks, while the male thread accepts a knuckle for guided tooling.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X70-75B with the ACEJ12X70-75B
For a 70 mm stroke at this force level, compare the 16 mm bore (100.5 N push at 0.5 MPa) if your load sits near the upper end of what the 12 mm bore can move, or step down only for very light positioning. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock: on air loss the piston still drifts, so add a separate clamp if you must hold a load. Mount with FA/FB flanges or LB feet on the standard face, and order the -S magnet code if you need CMSE / DMSE switch feedback. Since this unit is discontinued, spec the ACEJ12X70 as the current-production replacement and verify the ISO 21287 mounting dimensions against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X70-75B
- ✓ 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 ACPJ12X70-75B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N; theoretical maximum is 11.5 kgf at 1.0 MPa. The -75 code is a 75 mm adjustment window: a stop screw shortens the 70 mm extend stroke on site, giving a usable range of 0-70 mm. The 70 mm stroke itself is a made-to-order length, since the standard maximum for a 12 mm bore is 50 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
It is a short-body compact cylinder in the ISO 21287 class with a hard-anodized aluminium body, an S45C hard-chrome 6 mm rod, an M5x0.8 port, a male rod thread (B code) and fixed TPU bumpers at both ends. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flanges or LB feet bolt to the standard face. No magnet is fitted; the optional -S code enables CMSE / DMSE switches. The ACPJ family is discontinued - order the ACEJ12X70 as the current drop-in and confirm the ISO 21287 mounting dimensions first.
Related AirTAC ACE Cylinders
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