This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X75-20, 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 ACPJ12X75-20
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X75-20 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 75mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X75-20 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke75 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X75-20
- 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 ACPJ12X75-20
This is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 75 mm stroke by up to 20 mm, giving a usable range of 55-75 mm. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N push at 0.7 MPa), with a theoretical peak of 11.5 kgf at 1.0 MPa. The 75 mm stroke exceeds the 50 mm standard for this bore, so it is a made-to-order stroke. Note this model is discontinued; the current-production replacement is the ACEJ12X75.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures where a full-length body will not fit. A fixed TPU bumper sits at both ends, and the hard-anodized aluminium body carries an S45C hard-chrome 6 mm rod with an M3x0.5 female thread. As a rule of thumb, plan on about 34 N of real work at 0.5 MPa (roughly 60% of the push rating), which lifts about 1.7 kg vertically with a 2:1 margin. No magnet is fitted on this version, so position switches cannot be mounted.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X75-20 |
| Bore size | Ø12 mm |
| Stroke | 75 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 ACEJ12X75-20 (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 ACPJ12X75-20
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -20 | 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 ACPJ12X75-20 Is Used
Small-parts ejection in assembly jigs
The 55-75 mm trimmed extend range ejects finished clips or pins from a jig, with 56.5 N push at 0.5 MPa enough for light plastic parts.
Clamping fixture on a compact machining cell
The short body, about 50% shorter than an ISO 15552 profile cylinder, fits inside guarded clamping stations where space is limited.
Sorting gate on a packaging line
The 6 mm hard-chrome rod with M3x0.5 female thread drives a lightweight diverter gate at 30-500 mm/s to route small cartons between lanes.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X75-20 with the ACEJ12X75-20
At 12 mm bore you get 56.5 N push at 0.5 MPa; if your load needs more, the 16 mm bore gives 100.5 N and the 20 mm bore 157.1 N under the same pressure. The stop screw is a mechanical end stop for the extend stroke only - on air loss the piston still drifts, so do not rely on it to hold a load mid-stroke. Mounting is FA/FB flange or LB foot, and the optional -S magnet code enables CMSE / DMSE switches if you later need position sensing. Since this model is discontinued, order the ACEJ12X75 as the drop-in successor and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X75-20
- ✓ 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 ACPJ12X75-20 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 bore is 12 mm, stroke 75 mm (non-standard, made to order, since the bore's standard maximum is 50 mm), with a 20 mm adjustment window giving 55-75 mm. Port is M5x0.8, rod thread M3x0.5 female, pressure 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper at both ends.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ12X75 (swap the P for an E), which matches the same bore, stroke and force class in the ISO 21287 short-body format. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, because the ACP was built to a DIN-standard footprint. If you need position sensing on the replacement, order the -S magnet code so CMSE / DMSE switches can be fitted.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X75-20
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X75-20 replacement — usually within 7-8 hours.