This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X50-30, 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 ACPJ12X50-30
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X50-30 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 50mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X50-30 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke50 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X50-30
- 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 ACPJ12X50-30
The ACPJ12X50-30 is a double acting adjustable-stroke compact cylinder, now discontinued. Its 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N and 59.4 N at 0.7 MPa), with a theoretical peak of 11.5 kgf at 1.0 MPa. The -30 code gives a 30 mm adjustment window: a stop screw trims the 50 mm extend stroke down to as little as 20 mm on site, so one cylinder covers a 20-50 mm working range. 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 tight jigs and guarding where a full-length body cannot.
Practically, plan on about 34 N of usable push at 0.5 MPa (roughly 0.6 of the rating), which lifts about 2.8 kg vertically with a 2:1 margin - enough for small caps, sensors or light fixtures. The hard-anodized aluminium body carries an S45C hard-chrome 6 mm rod, a fixed TPU bumper at each end, and an M3x0.5 female rod thread with M5x0.8 ports. No magnet is fitted on this version; the optional -S code adds one for CMSE / DMSE switches. For new builds, order the current-production ACEJ12X50, which matches this bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping, since the ACP was DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-30 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-30 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X50-30 |
| Bore size | Ø12 mm |
| Stroke | 50 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 ACEJ12X50-30 (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 ACPJ12X50-30
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -30 | 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 ACPJ12X50-30 Is Used
Small-part ejection on assembly fixtures
A 20-50 mm trimmed extend stroke with about 34 N of usable push at 0.5 MPa nudges connectors, caps or stamped parts off a nest without over-travelling the part.
Gated test stations with end-of-stroke confirmation
Order the -S version and CMSE / DMSE switches flag full extend inside guard doors; the 12 mm bore fits the 50 mm envelope beside the fixture.
Lab and dispensing head lift
Lifts about 2.8 kg vertically with margin - a dispensing nozzle, probe or light sample holder - within a body far shorter than an ISO 15552 profile cylinder.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X50-30 with the ACEJ12X50-30
Size both ways: if 56.5 N push at 0.5 MPa is marginal for your load, step up to the 16 mm bore (100.5 N push, 75.4 N pull at 0.5 MPa); if the load is under about 30 N, the same 12 mm bore in a fixed-stroke ACP may be simpler. Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. Match FA/FB flange or LB foot hardware to the ISO 21287 face, and order the -S code if you need CMSE / DMSE switch positions. This model is discontinued; the drop-in successor is the ACEJ12X50.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X50-30
- ✓ 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 ACPJ12X50-30 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa that rises to 79.2 N push and 59.4 N pull, with a theoretical maximum of 11.5 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, air filtered to 40 um. Port is M5x0.8, rod thread M3x0.5 female, rod 6 mm, and the -30 code allows the 50 mm stroke to be trimmed to 20 mm.
An external stop screw shortens the extend stroke anywhere within the 30 mm window, giving a usable 20-50 mm range; it cannot lengthen the stroke past 50 mm and it does not hold a load if air is lost. The ACPJ family is discontinued - the current-production replacement is the ACEJ12X50 (swap the P for an E), a drop-in in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, because the ACP was built to a DIN standard.
Related AirTAC ACE Cylinders
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