This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ20X120-10B, 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 ACPJ20X120-10B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ20X120-10B 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 ACEJ20X120-10B (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 → ACEJ20X120-10B
- 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 ACPJ20X120-10B
The ACPJ20X120-10B is a double acting compact cylinder with an adjustable extend stroke, built on a hard-anodized aluminium body with an S45C hard-chrome piston rod. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 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 cannot. The 120 mm stroke is a non-standard, made-to-order length, since the longest catalog stroke for a 20 mm bore is 100 mm.
The -10 code adds a 10 mm adjustment window: an external stop screw trims the extend stroke on site, giving a usable range of 110-120 mm. That stop is a mechanical end stop only - it shortens the stroke, it does not lock or hold a load, and on air loss the piston still drifts. Fixed TPU bumpers at both ends absorb end-of-travel impact. Rod end is a male thread (the B code), the air port is M5x0.8, and no magnet is fitted because the -S code was not ordered. This model is discontinued; the current-production replacement is the ACEJ20X120, and buyers should confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-10B |
| 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 ACEJ20X120-10B (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 ACPJ20X120-10B
| 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 ACPJ20X120-10B Is Used
Light part ejection
Mounted under a small stamping die, the cylinder ejects finished clips off the tool; the male rod thread (B code) takes a knuckle or a custom platen directly.
Short-stroke diverting
On a packaging line, the trimmed 110-120 mm extend stroke nudges cartons from one lane to another, with the fixed TPU bumpers softening each end of travel at up to 500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-10B with the ACEJ20X120-10B
Mounting uses the FA/FB flange and LB foot family on the standard compact face; order the -S code if you later need CMSE / DMSE switches, since this unit has no magnet. For new designs, specify the ACEJ20X120 instead - same bore, stroke and force class, currently in production.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-10B
- ✓ 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 ACPJ20X120-10B 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. 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, air filtered to 40 um, port M5x0.8, rod 10 mm with male thread, and a 10 mm adjustable window on the 120 mm stroke.
Order the ACEJ20X120, the current-production ISO 21287 replacement: swap the P for an E and you get the same 20 mm bore, 120 mm stroke and force class in a direct short body. Because the ACPJ was built to a DIN-standard compact format, confirm the ISO 21287 mounting dimensions against your fixture before swapping. Also note this unit has no position magnet; if you need CMSE or DMSE switch sensing, order the -S version of the replacement.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-10B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-10B replacement — usually within 7-8 hours.