This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X30-30B, 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 ACPJ12X30-30B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X30-30B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 30mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X30-30B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke30 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X30-30B
- 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 ACPJ12X30-30B
A double acting compact cylinder with an adjustable stroke, the ACPJ12X30-30B uses a 12 mm bore and a 30 mm base stroke that an external stop screw trims anywhere in a 30 mm window, giving a usable extend range of 0-30 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those figures rise to 79.2 N and 59.4 N, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
Plan on about 34 N of real work at 0.5 MPa (roughly 60% of the rated push), which corresponds to lifting about 3 kg vertically - halve that to around 1.5 kg if you want a 2:1 margin on a vertical lift. The male rod thread (B code) takes an M3x0.5 knuckle, the port is M5x0.8, and a fixed TPU bumper sits at both ends. Note this model is discontinued: the current-production drop-in is the ACEJ12X30, so confirm ISO 21287 mounting dimensions before swapping, since the ACP family was built to a DIN-standard footprint.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-30B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-30B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X30-30B |
| Bore size | Ø12 mm |
| Stroke | 30 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 ACEJ12X30-30B (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 ACPJ12X30-30B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×30 | 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 ACPJ12X30-30B Is Used
Micro part ejection
Ejects finished watch or connector pins from a machining nest, with the 0-30 mm trim tuned to the exact nest depth and 56.5 N enough for 5 g parts.
Small assembly press
Presses a snap-fit battery cover on a PCB fixture; the stop screw sets a repeatable 12 mm extend so the male M3x0.5 rod lands in the same spot each cycle.
Label hold-down clamp
Clamps a roll of labels against a guide on a packaging head, where the compact body fits inside the guard and about 34 N of usable force holds the web without crushing it.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-30B with the ACEJ12X30-30B
For light clamping and positioning at 0.5 MPa, 56.5 N push covers small parts and low-force fixtures; step down is not available below 12 mm in this family, while the 16 mm bore gives 100.5 N and the 20 mm bore 157.1 N if the load grows. The stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the rod can drift if air is lost. If you need position sensing, the optional -S magnet enables CMSE / DMSE switches; this B-coded unit has no magnet fitted. FA/FB flange and LB foot mounts bolt to the standard face. Order the ACEJ12X30 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X30-30B
- ✓ 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 ACPJ12X30-30B FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum 11.5 kgf at 1.0 MPa. Bore 12 mm, stroke 30 mm with a 30 mm adjustment window (0-30 mm usable extend), rod 6 mm with male M3x0.5 thread, M5x0.8 port, 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, air filtered to 40 um.
An external stop screw shortens the 30 mm extend stroke by up to 30 mm, so you can set any extend length from 0 to 30 mm on site; it cannot lengthen the stroke past the ordered value, and it is a mechanical end stop, not a load-holding brake. The ACPJ family is discontinued - the current-production drop-in is the ACEJ12X30 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 footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X30-30B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X30-30B replacement — usually within 7-8 hours.