This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X125-10B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X125-10B 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 ACPJ20X125-10B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10B 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 ACEJ20X125-10B (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 → ACEJ20X125-10B
- 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 ACPJ20X125-10B
The ACPJ20X125-10B is a discontinued double acting compact cylinder in the DIN-standard ACP family, with a 20 mm bore, a 125 mm made-to-order stroke and a male (B code) rod thread on the 10 mm rod. The -10 code gives a 10 mm adjustment window: a stop screw trims the extend stroke on site, so the usable range is 115-125 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits slim jigs and guarding where a full-length body cannot.
Practical sizing: treat about 94 N (roughly 9.6 kg of vertical lift) as the realistic working output at 0.5 MPa instead of the full 157.1 N rating. The 125 mm stroke exceeds the 100 mm maximum standard stroke for a 20 mm bore, so this unit is built to order. Fluid is air filtered to 40 um, pressure runs 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof, speed is 30-500 mm/s, and fixed TPU bumpers sit at both ends. No magnet is fitted on this version, so no CMSE or DMSE switch can be mounted; order the -S code if sensing is needed. For new projects, the current-production drop-in is the ACEJ20X125 - confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X125-10B |
| 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 ACEJ20X125-10B (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 | 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 ACEJ20X125-10B 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 ACPJ20X125-10B
| 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 ACPJ20X125-10B Is Used
Compact ejection on assembly fixtures
The 157.1 N push at 0.5 MPa (about 9.6 kg of practical vertical effort) ejects finished parts from a 125 mm-deep nest, with the 10 mm window letting you shorten the throw to 115 mm once the tooling is proven.
Carton clamp on a small packaging head
A 219.9 N push at 0.7 MPa holds light cartons against a back plate in a tight packaging frame, where the short body fits inside guarding that a full-length profile cylinder cannot.
Press-fit of small bushings
The 32 kgf theoretical maximum at 1.0 MPa is enough to seat small bushings in electronics subassemblies, and the male rod thread bolts straight to a knuckle on the press ram.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-10B with the ACEJ20X125-10B
Compare both directions before committing: the 16 mm bore delivers 100.5 N push / 75.4 N pull at 0.5 MPa, while the 20 mm bore here gives 157.1 N / 117.8 N - step up only if the 16 mm falls short of your load. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock: on air loss the piston still drifts, so do not rely on it to hold a load. Mounting uses FA/FB flanges or LB feet on the ISO 21287 face, and the male rod thread suits I/Y knuckles directly. This model is discontinued; the ACEJ20X125 is the current replacement in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X125-10B
- ✓ 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 ACPJ20X125-10B 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; the theoretical maximum is 32 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window, so the 125 mm extend stroke can be trimmed anywhere in a 115-125 mm range by the stop screw. The 125 mm stroke is a made-to-order length, since the maximum standard stroke for a 20 mm bore is 100 mm. This model is discontinued - the ACEJ20X125 is the current drop-in.
It is a short-body compact cylinder with a hard-anodized aluminium body and an S45C hard-chrome rod, about 50% shorter in mounting length than an ISO 15552 profile cylinder, with fixed TPU bumpers at both ends that simply decelerate at the ends of travel. This version has no magnet, so CMSE or DMSE switches cannot be fitted; the optional -S magnet code enables them. Mounting is FA/FB flange or LB foot on the ISO 21287 face. Since the ACPJ is discontinued, confirm the ISO 21287 mounting dimensions of the ACEJ20X125 before ordering the swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X125-10B
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