This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-40, 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 ACPJ12X175-40
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-40 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 ACEJ12X175-40 (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 → ACEJ12X175-40
- 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 ACPJ12X175-40
This is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 175 mm stroke by up to 40 mm, giving a usable range of 135-175 mm on site. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, and the 175 mm stroke is a non-standard, made-to-order length because the standard maximum for the 12 mm bore is 50 mm. The ACPJ family is discontinued; the current-production replacement is the ACEJ12X175, so confirm ISO 21287 mounting dimensions before swapping from this DIN-standard body.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, which suits the 135-175 mm trim range for tight jigs and guarding. A fixed TPU bumper at each end decelerates the piston only - it never holds or brakes a load, and on air loss the piston drifts. Plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rating), which lifts about 3.5 kg vertically, or about 1.7 kg with a 2:1 margin. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and this unit has no magnet fitted - the optional -S code is required for CMSE / DMSE switches.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-40 |
| 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 ACEJ12X175-40 (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 ACPJ12X175-40
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×175 | Stroke length in mm. |
| -40 | 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 ACPJ12X175-40 Is Used
Ejector on a small assembly jig
The 40 mm window lets one cylinder serve several part heights between 135 and 175 mm, with 56.5 N enough to push light plastic housings off a nest at 0.5 MPa.
Stopper on a benchtop fixture
The short body trims mounting length by about half versus an ISO 15552 profile cylinder, so the 175 mm stroke fits under a low fixture plate; the stop screw sets the exact extend position.
Sample pusher in a lab dispenser
About 1.7 kg of vertical lift with a 2:1 margin covers microplate trays, and the 30-500 mm/s speed band matches gentle dosing moves.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-40 with the ACEJ12X175-40
For a 12 mm bore this is the top of the force class: 56.5 N push at 0.5 MPa versus 100.5 N from a 16 mm bore and 157.1 N from a 20 mm bore. If your trimmed load needs more than about 34 N of usable thrust, step up to the 16 mm frame. The female M3x0.5 rod thread and PT ports suit small tooling plates; FA/FB flange and LB foot mountings bolt to the ISO 21287 face. The 175 mm stroke is made to order, and the ACEJ12X175 is the drop-in successor - verify its mounting dimensions before ordering.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-40
- ✓ 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 ACPJ12X175-40 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. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, port M5x0.8, rod thread M3x0.5 female. The 175 mm stroke is a made-to-order length above the 50 mm standard maximum for this bore.
The -40 code is a 40 mm window: an external stop screw shortens the extend stroke anywhere between 135 and 175 mm. It is a mechanical end stop only - it does not lock the piston, which still drifts on air loss. The ACPJ family is discontinued; the ACEJ12X175 is the current ISO 21287 drop-in in the same bore, stroke and force class, so confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
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