This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X175-50SB, 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 ACPJ12X175-50SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X175-50SB 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 ACEJ12X175-50SB (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 → ACEJ12X175-50SB
- 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 ACPJ12X175-50SB
This 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. 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 maximum standard stroke for this bore, so it is a non-standard, made-to-order build. The male rod thread (B code) and PT ports are set by the ordering code.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarding where a full-length body will not fit. Because the -S magnet is fitted, CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke sensing. A practical sizing rule: at 0.5 MPa plan on roughly 34 N of real work (about 0.6 of the push rating), which lifts about 2.9 kg vertically with a 2:1 margin. Note that this ACPJ model is discontinued; the current-production replacement is the ACEJ12X175, and buyers should confirm ISO 21287 mounting dimensions before swapping since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X175-50SB |
| 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 ACEJ12X175-50SB (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 ACPJ12X175-50SB
| 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 ACPJ12X175-50SB Is Used
Small-part ejection from injection molds
The 56.5 N push at 0.5 MPa is enough to kick lightweight molded caps or bushings off a mold nest, and the 125-175 mm adjustable window lets the operator tune the eject position without re-machining the fixture.
Gantry pick stations with position checks
With the fitted magnet driving CMSE or DMSE switches, the cylinder confirms full extension before a vacuum gripper releases a phone-case blank, all inside a gantry frame too narrow for a long-body cylinder.
Lab dosing and sample press
A benchtop sample-prep rig uses the 2.9 kg vertical-lift class force to lower a small plunger into vials, with the stop screw set so the plunger never bottoms out on glassware.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X175-50SB with the ACEJ12X175-50SB
At 12 mm bore this sits at the light end of the ACPJ range: 56.5 N push at 0.5 MPa versus 100.5 N for the 16 mm bore and 157.1 N for the 20 mm bore, so step up a size if your load approaches 40 N. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the piston still drifts, so do not rely on it to hold a load. The male rod thread suits external knuckle joints, and FA flange or LB foot mounts bolt to the standard face. If you need position feedback, this unit already carries the optional -S magnet for CMSE / DMSE switches. For new projects, order the ACEJ12X175 instead, as this ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X175-50SB
- ✓ 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 ACPJ12X175-50SB 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 -50 code gives a 50 mm adjustment window, so the 175 mm extend stroke can be trimmed anywhere in a 125-175 mm range. The 175 mm stroke is a made-to-order build since the bore 12 standard maximum is 50 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends.
It is a compact short-body cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, male rod thread and M5x0.8 ports, about 50% shorter in mounting length than an ISO 15552 profile cylinder. The -S magnet fitted on this model allows CMSE / DMSE switch mounting. The ACPJ family is discontinued; the current-production drop-in is the ACEJ12X175 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, because the ACP is DIN-standard.
Related AirTAC ACE Cylinders
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