This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X120-30B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X120-30B 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 ACPJ20X120-30B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30B 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 ACEJ20X120-30B (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 → ACEJ20X120-30B
- 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 ACPJ20X120-30B
The ACPJ20X120-30B is a double acting, adjustable-stroke compact cylinder in the DIN-standard ACPJ family, now discontinued. Its 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa (219.9 N / 164.9 N at 0.7 MPa, 32 kgf theoretical max at 1.0 MPa). The -30 code gives a 30 mm adjustment window: a stop screw trims the extend stroke anywhere in a 90-120 mm range, so one cylinder serves several fixture depths. Note the 120 mm stroke exceeds the 100 mm standard maximum for bore 20, so it is a made-to-order build.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs, guards and gantries. A hard-anodized aluminium body with an S45C hard-chrome 10 mm rod, fixed TPU bumpers at both ends and M5x0.8 ports complete the package. This unit has a male rod thread (B code) and no magnet, since the magnet is the optional -S code. For a current-production swap, order the ACEJ20X120 and confirm ISO 21287 mounting dimensions first. As a sizing guide, plan on roughly 94 N (about 9.6 kg) of real work at 0.5 MPa, or lift about 8 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-30B |
| 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 ACEJ20X120-30B (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 ACEJ20X120-30B 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 ACPJ20X120-30B
| 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 ACPJ20X120-30B Is Used
Press-fit jig for electronics housings
The 157.1 N push at 0.5 MPa presses connectors and bushings into small plastic housings, while the 30 mm window lets the operator trim the stop as fixture inserts wear.
Short-station clamping on a rotary indexing table
The short body, roughly half the length of an ISO 15552 profile cylinder, fits under low fixture plates on a 4-station rotary table; the 90-120 mm adjustable range covers different part heights.
Carton ejector on a small packaging line
Running at 30-500 mm/s, the cylinder kicks finished cartons off a conveyor at up to 120 mm travel, with the male rod thread (B code) simplifying bracket attachment.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-30B with the ACEJ20X120-30B
At 157.1 N push (0.5 MPa), the 20 mm bore sits between the 16 mm bore (100.5 N) and the next size up for heavier clamping. If your load needs more than about 94 N of usable force, stay at 20 mm; if it is lighter, the 16 mm saves space. The 30 mm adjustment window suits stations where the stop position is tuned on site, but remember the stop is a mechanical end stop only - on air loss the piston drifts, so it is not a mid-stroke lock. Match FA/FB flange or LB foot mounts to your fixture, and if you need position switches, order the -S version with the magnet so CMSE / DMSE switches work. This model is discontinued: the ACEJ20X120 is the current drop-in with the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-30B
- ✓ 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 ACPJ20X120-30B FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa that rises to 219.9 N push and 164.9 N pull, with a theoretical maximum of 32 kgf at 1.0 MPa. It is double acting with a 30 mm adjustment window (usable stroke 90-120 mm), M5x0.8 ports, a 10 mm male-thread rod, operating pressure 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s and fixed TPU bumpers at both ends. The 120 mm stroke is a made-to-order length since the bore 20 standard maximum is 100 mm.
Yes, the whole ACPJ family is out of production. The current-production replacement is the ACEJ20X120 (swap the P for an E), which matches the same bore, stroke and force class in the ISO 21287 short-body format - confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard. On sensors: this exact code has no magnet, because the magnet is the optional -S code; with -S ordered, CMSE or DMSE reed and solid-state switches can be mounted.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-30B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-30B replacement — usually within 7-8 hours.