This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X125-10 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X125-10 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 ACPJ20X125-10
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10 is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 125mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X125-10 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke125 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X125-10
- 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 ACPJ20X125-10
This discontinued AirTAC unit is a double acting compact cylinder with an adjustable extend stroke: the -10 code gives a 10 mm stop-screw window, so the 125 mm stroke can be trimmed on site to any usable length between 115 and 125 mm. It never lengthens the stroke past the ordered 125 mm. At 0.5 MPa the 20 mm bore pushes 157.1 N and pulls 117.8 N; at 0.7 MPa that rises to 219.9 N push. As a rule of thumb, plan on roughly 94 N (about 9.6 kgf) of real work at 0.5 MPa, which lifts about 4.8 kg vertically with a 2:1 margin. Note the 125 mm stroke exceeds the 100 mm standard limit for bore 20, so this 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, so it slots into cramped jigs and gantries. A hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). No magnet is fitted on this code, so no CMSE / DMSE switch can be read unless you order the optional -S version. Since the ACPJ family is discontinued, the current-production drop-in is the ACEJ20X125 - confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X125-10 |
| Bore size | Ø20 mm |
| Stroke | 125 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 ACEJ20X125-10 (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 ACEJ20X125-10 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 ACPJ20X125-10
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 (adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10 Is Used
Fixture clamping on a CNC jig
The 115-125 mm trim range lets a machinist dial the clamp stroke to the fixture without shims; 157.1 N push at 0.5 MPa holds light aluminum parts during drilling.
Carton kick-off at a packing head
A short 20 mm bore body kicks filled cartons off a conveyor lane; the 10 mm stop screw sets exactly how far the box travels before the next cycle.
Sample pusher in a lab autosampler
About 4.8 kg of vertical lift equivalent at 0.5 MPa with a 2:1 margin suits raising small sample trays; the compact body fits inside the instrument enclosure.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10 with the ACEJ20X125-10
Size both ways: if 157.1 N push at 0.5 MPa is more than the job needs, the 16 mm bore gives 100.5 N; if you need headroom, the next class up in the ACE range adds force at the same short length. The 10 mm stop screw is a mechanical end stop for the extend stroke only - it does not lock the piston, so on air loss the rod still drifts and an external brake is needed for load holding. FA/FB flange or LB foot mounts plus I/Y rod knuckles bolt to the standard face. Order the -S code if position sensing via CMSE / DMSE switches matters. For new projects, specify the ACEJ20X125 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X125-10
- ✓ 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 ACPJ20X125-10 FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa, 219.9 N push and 164.9 N pull; theoretical maximum is 32 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window, so the 125 mm extend stroke is trimmed anywhere in a 115-125 mm range by the external stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the 125 mm stroke is a made-to-order length above the 100 mm standard for bore 20.
Order the ACEJ20X125, the current-production ISO 21287 successor: swap the P for an E and you get the same 20 mm bore, 125 mm stroke and force class in a matching short body. Confirm the ISO 21287 mounting dimensions against your existing holes before swapping, since the ACPJ follows the older DIN-standard compact layout. Also note this code has no magnet, so if you need CMSE / DMSE switch positions, order the -S version of the replacement.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X125-10
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X125-10 replacement — usually within 7-8 hours.