This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X25-30, 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 ACPJ20X25-30
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ20X25-30 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 25mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X25-30 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X25-30
- 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 ACPJ20X25-30
The ACPJ20X25-30 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 25 mm stroke on site within the ordered 30 mm window, so the usable range is 0-25 mm. Air drives the piston both ways, a fixed TPU bumper sits at each end, and the hard-anodized aluminium body carries an S45C hard-chrome rod on a 10 mm rod. At 0.5 MPa this 20 mm bore pushes 157.1 N and pulls 117.8 N, running at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped jigs and guarding where a full-length cylinder cannot. Note this unit has no magnet (the -S code adds one for CMSE / DMSE switches), and the ACPJ family is discontinued: order the current ACEJ20X25 and confirm the ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X25-30 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X25-30 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X25-30 |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 100 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ20X25-30 (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 (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 118 N |
| 0.7 MPa | 165 N |
| Max (@1.0 MPa) | 24 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 ACPJ20X25-30
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 ACPJ20X25-30 Is Used
Product stopper on packaging lines
A 25 mm extend stroke is enough to raise a stop blade under cartons on a conveyor, and the compact short body fits under low guard rails where an ISO 15552 profile cylinder would not.
Sample press in lab automation
About 94 N of usable force at 0.5 MPa presses microplate lids and sample caps gently, with the fixed TPU bumper softening both ends at 30-500 mm/s speeds.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X25-30 with the ACEJ20X25-30
The 30 mm adjustment window suits stations where the final position is tuned during commissioning. Remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flanges and LB feet bolt to the same face, and the optional -S magnet enables CMSE / DMSE sensing. Since ACPJ is discontinued, spec the ACEJ20X25 as the current direct and verify ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X25-30
- ✓ 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 ACPJ20X25-30 FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The bore is 20 mm with a 10 mm rod, M6x1.0 female rod thread, M5x0.8 ports, 0.15-1.0 MPa (22-145 psi) operating pressure, -20 to +70 C, 30-500 mm/s, and a fixed TPU bumper at both ends. The extend stroke is adjustable within the 30 mm window.
No - the ACPJ family is discontinued. The current-production replacement is the ACEJ20X25, an ISO 21287 compact cylinder in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP follows the older DIN-standard footprint. If you need position sensing, order the -S version so the optional magnet is fitted for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X25-30
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X25-30 replacement — usually within 7-8 hours.