This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-20S, 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 ACPJ12X175-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-20S 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 ACEJ12X175-20S (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 → ACEJ12X175-20S
- 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 ACPJ12X175-20S
This double acting compact cylinder pushes with 56.5 N and pulls with 42.4 N at 0.5 MPa (79.2 / 59.4 N at 0.7 MPa), with a theoretical peak of 11.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: a stop screw trims the 175 mm extend stroke on site, so the usable range is 155-175 mm. The 175 mm stroke is beyond the 50 mm standard maximum for a 12 mm bore, so it is a made-to-order build. Note this model is discontinued; the current-production replacement is ACEJ12X175, the same bore, stroke and force class.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into slim pick-and-place heads and guarded test rigs. The -S magnet is fitted on this unit, so CMSE / DMSE reed or solid-state switches can be clipped on for end-of-stroke signals. As a rule of thumb, plan on about 34 N (roughly 3.5 kgf) of real work at 0.5 MPa, and expect it to lift about 2.9 kg vertically with a 2:1 margin. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-20S |
| 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 ACEJ12X175-20S (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 ACPJ12X175-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×175 | 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 ACPJ12X175-20S Is Used
Micro part ejection from stamping dies
The 56.5 N push at 0.5 MPa is enough to strip small terminals or shims off a die face, and the 155-175 mm adjustable reach clears deep die pockets.
Sample probe advance in lab analysers
The fitted -S magnet with CMSE switches confirms probe home and extended positions, while the 20 mm trim dials the dip depth to the vial geometry.
Light gate actuation on electronics conveyors
A 2.9 kg vertical lift rating with margin suits small divertor flaps, and the short body fits under low conveyor frames where a profile cylinder will not.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20S with the ACEJ12X175-20S
At 12 mm bore this is the lightest force step: 56.5 N push at 0.5 MPa versus 100.5 N for a 16 mm bore and 157.1 N for a 20 mm bore, so step up if your part weight or clamp force is close to the limit. The stop screw only shortens the extend stroke - it is not a mid-stroke lock, and the rod will drift if air is lost, so use a separate clamp or brake for load holding. FA/FB flange and LB foot mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Before ordering, confirm the ISO 21287 mounting dimensions of the ACEJ12X175 replacement, since the ACP series is DIN-standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-20S
- ✓ 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 ACPJ12X175-20S 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 12 mm bore uses an M5x0.8 port (PT) and a female M3x0.5 rod thread, the 6 mm rod is S45C hard-chrome, operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the 175 mm stroke is a made-to-order length above the 50 mm standard maximum for this bore.
The -20 code adds a stop screw that shortens the extend stroke by up to 20 mm, giving a usable 155-175 mm range; it cannot lengthen the stroke past 175 mm, and it does not hold a load if air is lost. The ACPJ family is discontinued - order the ACEJ12X175 as the current drop-in successor in the same bore, stroke and force class, and confirm the ISO 21287 mounting dimensions before swapping, because the ACP was built to a DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X175-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X175-20S replacement — usually within 7-8 hours.