This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X125-100SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X125-100SB 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 ACPJ20X125-100SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100SB 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 ACEJ20X125-100SB (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 → ACEJ20X125-100SB
- 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 ACPJ20X125-100SB
This is a double acting compact cylinder with an adjustable extend stroke, and it is discontinued: the current-production replacement is the ACEJ20X125, which swaps the P for an E in the same bore, stroke and force class. The 20 mm bore pushes 157.1 N and pulls 117.8 N at 0.5 MPa, rising to 219.9 N at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. The -100 code gives a 100 mm adjustment window, so a stop screw trims the 125 mm extend stroke anywhere down to 25 mm on site. Note the 125 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 matters in tight jigs and gantries. The male rod thread (B code) bolts to I/Y knuckles, and FA/FB flange or LB foot mounts face the standard ISO 21287 pattern - confirm those dimensions before swapping to the ACEJ. Because this model carries the -S magnet, CMSE / DMSE reed or solid-state switches can be fitted for end-of-stroke sensing. As a planning figure, about 94 N (roughly 9 kgf) of the 0.5 MPa push is realistic for real work, which lifts about 5 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X125-100SB |
| 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 ACEJ20X125-100SB (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 ACEJ20X125-100SB 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 ACPJ20X125-100SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -100 | 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 ACPJ20X125-100SB Is Used
Fixture clamping on CNC jigs
The 25-125 mm trimmed extend range lets one cylinder serve several part heights on a milling jig, with 157.1 N of push at 0.5 MPa holding steel blanks against a stop.
Small-box ejection on packaging lines
At 30-500 mm/s the 20 mm bore kicks cartons or blisters off a conveyor lane, and the -S magnet plus a DMSE switch confirms each eject cycle completed.
Sample press in lab automation
About 94 N of usable force presses vials or microplate lids in compact analyser heads where the short body must fit under a guard.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100SB with the ACEJ20X125-100SB
Size both ways: if 157.1 N of push at 0.5 MPa is more than your fixture needs, the 16 mm bore delivers 100.5 N in the same compact family; if you need more, step up beyond bore 20 in the ACE range. Remember the stop screw only trims the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. The male rod thread suits clevis knuckles and tooling plates; add FA/FB flange or LB foot hardware to match your fixture. Order the ACEJ20X125 as the current drop-in and verify the ISO 21287 mounting footprint first.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X125-100SB
- ✓ 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 ACPJ20X125-100SB 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. Plan on roughly 94 N of real work at 0.5 MPa, which lifts about 5 kg vertically with a 2:1 margin. Operating range is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The -100 code is a 100 mm window: an external stop screw shortens the 125 mm extend stroke down to 25 mm, set by hand on the machine. The fixed TPU bumper at both ends just decelerates the piston at each end. The ACPJ family is discontinued - order the ACEJ20X125, the current ISO 21287 drop-in in the same bore, stroke and force class, and confirm the mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X125-100SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X125-100SB replacement — usually within 7-8 hours.