This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-20B, 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 ACPJ12X175-20B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-20B 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 ACEJ12X175-20B (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 → ACEJ12X175-20B
- 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 ACPJ12X175-20B
This double acting compact cylinder trims its extend stroke on site: the -20 code gives a 20 mm stop-screw window, so the 175 mm stroke is usable anywhere from 155 to 175 mm. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The 175 mm stroke exceeds the 50 mm standard maximum for bore 12, so it is a made-to-order build. Note this model is discontinued; the current-production replacement is ACEJ12X175.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which suits slim pick-and-place heads and guarded test rigs. A fixed TPU bumper sits at both ends and the male rod thread (B code) takes an external knuckle directly. Plan on about 34 N of real work at 0.5 MPa (roughly a 2.8 kg vertical lift with a 2:1 margin) rather than the full rating. No magnet is fitted - the optional -S code is required before CMSE / DMSE switches can be used.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-20B |
| 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 ACEJ12X175-20B (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 ACPJ12X175-20B
| 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 ACPJ12X175-20B Is Used
Benchtop test station actuator
The 155-175 mm adjustable reach presses small sensors or PCBs into a test nest, with 56.5 N of push at 0.5 MPa enough for light contact and seating checks.
Micro-part ejection from a mold or fixture
A 6 mm male-thread rod drives a knock-off pin that nudges 2-3 kg parts free of a compact jig, using the stop screw to fine-tune ejector travel.
Slide gate on a slim conveyor diverter
The short body fits beside a narrow conveyor frame where a full-length profile cylinder will not, deflecting small cartons between lanes at 30-500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-20B with the ACEJ12X175-20B
At 12 mm bore this is the smallest force class in the family; step up to 16 mm for 100.5 N push or 20 mm for 157.1 N at 0.5 MPa if the load needs more margin. The stop screw only shortens the extend stroke and does not lock position - on air loss the piston still drifts, so add a separate clamp if holding matters. FA/FB flange and LB foot mountings fit the ISO 21287 face. For new designs, order ACEJ12X175 and confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-20B
- ✓ 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 ACPJ12X175-20B 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 20 mm adjustment window on the 175 mm stroke, an M5x0.8 port, male rod thread, 0.15-1.0 MPa (22-145 psi) operating pressure and 30-500 mm/s speed. The 175 mm stroke is a made-to-order length above the 50 mm standard maximum for bore 12.
No - the ACPJ family is discontinued. The current-production drop-in is ACEJ12X175, which swaps the P for an E and matches the same bore, stroke and force class in the ISO 21287 short-body format. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. Also note no magnet is fitted on this version; the optional -S code is what enables CMSE / DMSE switch mounting.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X175-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X175-20B replacement — usually within 7-8 hours.