This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X120-10SB, 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 ACPJ20X120-10SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ20X120-10SB is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X120-10SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X120-10SB
- 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 ACPJ20X120-10SB
Double acting compact cylinder with an adjustable extend stroke, the ACPJ20X120-10SB carries a 20 mm bore, a 120 mm made-to-order stroke and a 10 mm trim window, so the stop screw sets the working stroke anywhere from 110 to 120 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N on the extend stroke at 0.7 MPa. The male rod thread (B code) bolts straight to I/Y knuckles, and the fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke sensing. This model is discontinued; the current-production replacement is the ACEJ20X120.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight gantries and guarding where a full-length body will not fit. A fixed TPU bumper at each end decelerates the piston, the hard-anodized aluminium body carries M5x0.8 ports, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-10SB |
| Bore size | Ø20 mm |
| Stroke | 120 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 ACEJ20X120-10SB (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 ACPJ20X120-10SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -10 | 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 ACPJ20X120-10SB Is Used
Fixture clamping on a CNC jig
The 10 mm trim window lets a machinist dial the clamp stroke between 110 and 120 mm to suit part tolerances, with 157.1 N of extend force at 0.5 MPa holding steel blanks against the locator.
Packaging line push-off arm
A male-thread rod drives a pusher paddle that tips cartons off a conveyor; the fitted -S magnet and a DMSE switch confirm each stroke, and the compact body fits under low guarding.
Lab sample press station
About 94 N of usable force at 0.5 MPa presses sample vials into snap caps gently, and the 30-500 mm/s speed range lets the operator slow the approach for delicate vials.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10SB with the ACEJ20X120-10SB
Note the adjuster is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod still drifts if air is lost. The 120 mm stroke exceeds the 100 mm standard maximum for this bore, so it is made to order. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ20X120 replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-10SB
- ✓ 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 ACPJ20X120-10SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N; theoretical maximum is 32 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window, so the stop screw trims the 120 mm extend stroke down to 110 mm. The 120 mm stroke is non-standard for this bore and is made to order.
The hard-anodized aluminium body is an ISO 21287-class short build that saves about 50% of the mounting length of an ISO 15552 profile cylinder, with FA/LB mounting options and M5x0.8 ports. This unit carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be mounted for position signals. The ACPJ family is discontinued; order the ACEJ20X120 as the current direct and confirm ISO 21287 mounting dimensions first.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-10SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-10SB replacement — usually within 7-8 hours.