This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X120-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X120-30S in place of this model. 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 ACPJ20X120-30S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S is a double acting, 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 ACEJ20X120-30S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X120-30S
- 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 ACPJ20X120-30S
The ACPJ20X120-30S is a double acting, adjustable-stroke compact cylinder in the discontinued AirTAC ACPJ range. Its 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa (219.9 N push at 0.7 MPa), and the -30 code gives a 30 mm adjustment window: an external stop screw trims the extend stroke anywhere within 90-120 mm on site. The 120 mm stroke exceeds the 100 mm maximum standard stroke for this bore, so it is a made-to-order build. Note this model is discontinued - the current-production replacement is the ACEJ20X120, a drop-in successor in the same bore, stroke and force class.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs, guards and gantries. A hard-anodized aluminium body carries an S45C hard-chrome rod, with a fixed TPU bumper at each end and speeds of 30-500 mm/s across 0.15-1.0 MPa (22-145 psi). The fitted -S magnet accepts CMSE / DMSE reed or solid-state switches for end-of-stroke sensing. For sizing: about 0.6 of the push force is a realistic working figure, roughly 94 N, which lifts about 9 kg vertically - halve that for a 2:1 margin and match parts up to about 4-5 kg.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-30S |
| Bore size | Ø20 mm |
| Stroke | 120 mm |
| Acting type | Double acting, 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 ACEJ20X120-30S (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 | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 kgf | |
The ACEJ20X120-30S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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 (adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S Is Used
Small-parts ejector on assembly fixtures
The 157.1 N push at 0.5 MPa ejects finished clips or pins from a nest, and the 30 mm window lets a technician dial the extend stroke between 90 and 120 mm to clear the fixture without retubing the machine.
Position-verified clamping in test rigs
With the -S magnet fitted, CMSE or DMSE switches confirm full extension on an electronics test bench, while the fixed TPU bumpers quiet the 30-500 mm/s stroke at both ends.
Compact press-fit of bushings
About 94 N of usable working force at 0.5 MPa presses light bushings into plastic housings inside a guard where a full-length ISO 15552 profile cylinder would not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30S with the ACEJ20X120-30S
Size both ways before committing: the 16 mm bore gives 100.5 N push at 0.5 MPa if your load is lighter, while the next class up moves to 32 mm bores with 1/8" ports if you need more than the 157.1 N this cylinder produces. Remember the stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. Mounting uses the FA/FB flange and LB foot family plus I/Y rod knuckles on the standard face. Because the ACPJ is discontinued, order the ACEJ20X120 and confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-30S
- ✓ 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 ACPJ20X120-30S 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, M5x0.8 ports, female M6x1.0 rod thread, operating pressure 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and a fixed TPU bumper at each end. The 120 mm stroke is a made-to-order length above the 100 mm standard maximum for this bore, trimmed by a 30 mm stop-screw window.
Order the ACEJ20X120: swap the P for an E and you get the current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with the same FA/FB flange and LB foot mounting family. Because the ACP was built to a DIN standard, confirm the ISO 21287 mounting dimensions against your fixture before the swap. The ACEJ also carries the optional -S magnet for CMSE / DMSE switches if you need sensing.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-30S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-30S replacement — usually within 7-8 hours.