This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X45-30, 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 ACPJ12X45-30
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X45-30 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 45mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X45-30 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke45 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X45-30
- 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 ACPJ12X45-30
The ACPJ12X45-30 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 45 mm stroke by up to 30 mm on site, giving a usable range of 15-45 mm. 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, with a theoretical maximum of 11.5 kgf at 1.0 MPa. Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding where a full-length body will not fit.
A rule of thumb for real work: plan on about 34 N (roughly 60% of the push rating) at 0.5 MPa, which corresponds to lifting about 3 kg vertically - and halve that for a 2:1 margin on a real part. The body is hard-anodized aluminium with an S45C hard-chrome rod, fixed TPU bumpers at both ends, a female M3x0.5 rod thread and M5x0.8 ports. This model carries no magnet, so position switches cannot be fitted; the optional -S code adds one for CMSE / DMSE switches. The ACPJ family is discontinued - the current-production drop-in is ACEJ12X45, and you should confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-30 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-30 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X45-30 |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACEJ12X45-30 (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 ACPJ12X45-30
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 ACPJ12X45-30 Is Used
Small-part ejection from plastic injection molds
The 15-45 mm adjustable range trims the eject stroke to clear shallow cavities, and 56.5 N push at 0.5 MPa is enough for light nylon or POM parts.
Clamping in compact electronics test jigs
The short body fits inside tight fixture frames, and about 34 N of usable push holds PCBs or small housings against a nest during probe testing.
Sample pusher in laboratory dispensing equipment
Speeds of 30-500 mm/s let the 12 mm bore index microplates or vials gently, with the stop screw set to a repeatable short stroke.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-30 with the ACEJ12X45-30
Size the bore both ways: if 56.5 N push at 0.5 MPa is more than your load needs, the next size down does not exist in this family (12 mm is the smallest), so trim the pressure instead; if you need more, the 16 mm bore gives 100.5 N push at 0.5 MPa. Keep in mind the stop screw only shortens the extend stroke - it is an end stop, not a mid-stroke lock, so the rod will still drift if air is lost. FA/FB flange and LB foot mounts bolt to the standard face, and the female M3x0.5 rod thread takes I/Y knuckles. Order the -S variant if you need CMSE / DMSE sensing. For new projects, specify the ACEJ12X45, the current replacement in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X45-30
- ✓ 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 ACPJ12X45-30 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 pressure 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, and the port is M5x0.8 with a female M3x0.5 rod thread. The -30 code means the 45 mm stroke can be shortened by up to 30 mm, so the extend stroke is adjustable anywhere in a 15-45 mm window.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with fixed TPU bumpers at both ends and FA/FB flange or LB foot mounting on the standard face. The ACPJ family is no longer in production: the current drop-in is ACEJ12X45 (swap the P for an E), which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, because the ACP is DIN-standard. If you need position sensing, order the -S version with the optional magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
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