This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-50S, 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 ACPJ12X80-50S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-50S 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 ACEJ12X80-50S (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 → ACEJ12X80-50S
- 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 ACPJ12X80-50S
This double acting compact cylinder trims its extend stroke on site: the -50 stop screw shortens the 80 mm stroke by up to 50 mm, giving a usable 30-80 mm range. At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull, rising to 79.2 N push at 0.7 MPa. The 80 mm stroke exceeds the 50 mm standard maximum for this bore, so it is made to order.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim jigs and guarding where a full-length body will not fit. Because about 34 N of the rated push is a realistic working figure, the rod lifts roughly 2.9 kg vertically with a 2:1 margin - enough for small covers, sensors or light fixtures. The -S magnet is fitted on this model, so CMSE / DMSE switches mount directly. Note: the ACPJ family is discontinued; the current drop-in is ACEJ12X80 - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-50S |
| 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 ACEJ12X80-50S (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 ACPJ12X80-50S
| 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 ACPJ12X80-50S Is Used
Vision-inspection camera positioning
A 30-80 mm extend range lets a lab technician dial in the exact camera drop height over a PCB pallet, with the -S magnet feeding CMSE switch feedback to the controller.
Sample vial ejector in a compact analyzer
At 56.5 N push the rod ejects 10 mL vials from a tray slot; the 2.9 kg vertical-lift margin covers the light tray weight with room to spare.
Small-part gate on an assembly cell conveyor
The short body mounts between conveyor frames where a full-length profile cylinder cannot, and the stop screw sets a repeatable 45 mm gate throw.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-50S with the ACEJ12X80-50S
Size up if 56.5 N push at 0.5 MPa is marginal: the 16 mm bore gives 100.5 N and the 20 mm bore 157.1 N at the same pressure. Size down only if the 42.4 N pull and 6 mm rod suit a lighter return task. The stop screw is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts, so add a separate clamp for holding. FA/FB flange and LB foot mountings bolt to the standard face. This unit carries the optional -S magnet for CMSE / DMSE switches. Replacement: ACEJ12X80.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-50S
- ✓ 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 ACPJ12X80-50S FAQ
Push 56.5 N and pull 42.4 N at 0.5 MPa; push 79.2 N and pull 59.4 N at 0.7 MPa; theoretical maximum 11.5 kgf at 1.0 MPa. Bore 12 mm, stroke 80 mm (non-standard, made to order), adjustable window 50 mm, rod 6 mm with female M3x0.5 thread, port M5x0.8 (PT), speed 30-500 mm/s, pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), temperature -20 to +70 C, fixed TPU bumper both ends.
An external stop screw shortens the extend stroke anywhere within the ordered 50 mm window, so the rod can stop between 30 and 80 mm; it cannot lengthen the stroke past 80 mm. The bumper is a fixed TPU pad at each end only. The ACPJ is discontinued - the current-production drop-in is ACEJ12X80 in the same bore, stroke and force class; confirm ISO 21287 mounting dimensions before ordering.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X80-50S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-50S replacement — usually within 7-8 hours.