This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-50, 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 ACPJ12X175-50
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-50 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 175mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X175-50 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke175 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X175-50
- 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 ACPJ12X175-50
The ACPJ12X175-50 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 175 mm stroke by up to 50 mm, giving a usable range of 125-175 mm on site. Bore 12 mm delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 / 59.4 N at 0.7 MPa, 11.5 kgf theoretical max at 1.0 MPa). The 175 mm stroke exceeds the 50 mm maximum standard stroke for this bore, so it is a made-to-order build. Note: the ACPJ family is discontinued; the current drop-in is ACEJ12X175 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
The hard-anodized aluminium body with S45C hard-chrome rod saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim jigs and guarding where a full-length body cannot. In practice, plan on about 34 N of real work at 0.5 MPa (roughly 60% of the rating), which lifts about 2.9 kg vertically with a 2:1 margin. Fluid is air filtered to 40 um, pressure 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends. This version has no magnet; the optional -S code adds one for CMSE / DMSE switches.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-50 |
| Bore size | Ø12 mm |
| Stroke | 175 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 ACEJ12X175-50 (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 ACPJ12X175-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -50 | 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 ACPJ12X175-50 Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to strip tiny molded clips off a core pin, and the 125-175 mm adjustable range lets the molder tune the eject position without swapping the cylinder.
Sample pusher in a lab analyzer
A 6 mm rod advancing sample vials into a cuvette reader fits the 2.9 kg vertical-lift class, and the short ISO 21287 body hides inside the analyzer chassis.
Carton flap tuck on a packaging line
Folding light cardboard flaps needs only about 34 N of usable force; the LB foot mount bolts the cylinder alongside the conveyor frame where space is tight.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50 with the ACEJ12X175-50
At 12 mm bore this is the lightest force class: 56.5 N push at 0.5 MPa suits small clamping and eject tasks; step up to the 16 mm bore (100.5 N push) or 20 mm bore (157.1 N push) if the load is heavier. The stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock - the piston still drifts if air is lost, so do not rely on it to hold a load. Mounting is FA/FB flange or LB foot with a female M3x0.5 rod thread and PT ports. If you need position sensing, order the -S variant with the optional magnet. For new designs, specify the current ACEJ12X175 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-50
- ✓ 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 ACPJ12X175-50 FAQ
Push is 56.5 N and pull 42.4 N at 0.5 MPa; at 0.7 MPa it is 79.2 N push and 59.4 N pull, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with an M5x0.8 port, female M3x0.5 rod thread and a 50 mm stroke adjustment window (125-175 mm usable).
The 50 mm standard maximum for a 12 mm bore means this 175 mm stroke is a made-to-order build, so lead time applies. The ACPJ family is discontinued; AirTAC's current replacement is the ISO 21287 ACEJ12X175, a drop-in in the same bore, stroke and force class. Verify the ISO 21287 mounting dimensions against your fixture before ordering the swap.
Related AirTAC ACE Cylinders
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