This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-50, 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 ACPJ12X80-50
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-50 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 80mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X80-50 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke80 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X80-50
- 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 ACPJ12X80-50
This compact cylinder is double acting, so air drives the rod out and pulls it back, and the -50 code adds a 50 mm adjustment window: an external stop screw trims the 80 mm extend stroke down to any setting in a 30-80 mm range. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The 80 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build.
The hard-anodized aluminium body with an S45C hard-chrome rod keeps the mounting length roughly 50% shorter than an ISO 15552 profile cylinder, which is why it slots into tight fixture plates and guarding where a full-length body will not fit. In practice, plan on about 34 N (roughly 3.4 kgf) of usable push at 0.5 MPa, enough to lift about 2.9 kg vertically with a 2:1 margin. Note this model is discontinued: the current-production replacement is the ACEJ12X80, and you should confirm the ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-50 |
| Bore size | Ø12 mm |
| Stroke | 80 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 ACEJ12X80-50 (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 ACPJ12X80-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×80 | 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 ACPJ12X80-50 Is Used
Small-parts ejection on assembly fixtures
The 30-80 mm adjustable extend range lets a jig builder dial in the exact eject distance for connector or pin trays, with 56.5 N of push at 0.5 MPa clearing lightweight parts reliably.
Indexing slide in a compact test station
With the optional -S magnet and CMSE / DMSE switches, end-of-travel signals confirm each 80 mm index of a sample holder, all inside a body about 50% shorter than an ISO 15552 profile cylinder.
Light clamping of PCB or lens carriers
About 34 N of usable clamping force at 0.5 MPa holds delicate circuit boards or optical trays during a solder or inspection cycle, and the stop screw trims the stroke to the carrier height.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50 with the ACEJ12X80-50
Size this bore when your load sits under about 34 N of real working force at 0.5 MPa; if you need more, the 16 mm bore gives 100.5 N push and the 20 mm bore 157.1 N at the same pressure. The stop screw only shortens the extend stroke and is not a mid-stroke lock - on air loss the piston still drifts, so add a separate valve or lock if position must hold. FA/FB flange and LB foot mountings bolt to the standard face, and if you need reed or solid-state switches, order the -S variant with the optional magnet for CMSE / DMSE sensors - this version has no magnet fitted. For new projects, specify the ACEJ12X80 instead, as this ACPJ model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-50
- ✓ 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 ACPJ12X80-50 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 12 mm bore uses an M5x0.8 port, a 6 mm rod with M3x0.5 female thread, runs at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s, and the 80 mm stroke is a made-to-order length above the 50 mm standard maximum for this bore.
The -50 code sets a 50 mm window: an external stop screw shortens the 80 mm extend stroke to any length from 30 to 80 mm, and a fixed TPU bumper decelerates the piston at both ends. It is a mechanical stop only - it never holds a load if air is lost. The ACPJ family is discontinued, so order the ACEJ12X80 as the current drop-in and confirm the ISO 21287 mounting dimensions before the swap.
Related AirTAC ACE Cylinders
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