This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X125-100B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X125-100B 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 ACPJ20X125-100B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100B 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 ACEJ20X125-100B (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 → ACEJ20X125-100B
- 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 ACPJ20X125-100B
Double acting and adjustable, the ACPJ20X125-100B is a discontinued DIN-standard compact cylinder with a 20 mm bore, a 125 mm made-to-order stroke and a male rod thread (the B code). At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. The -100 code sets a 100 mm adjustment window: a stop screw trims the extend stroke on site anywhere from 25 mm to the full 125 mm. The 125 mm stroke exceeds the 100 mm standard maximum for this bore, so it is produced to order.
The hard-anodized aluminium body with an S45C hard-chrome rod saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding. Fixed TPU bumpers sit at both ends; they decelerate only and never hold a load on lost air. Plan on about 94 N (roughly 9.6 kgf) of real work at 0.5 MPa, or lift about 8 kg vertically with a 2:1 margin. Note there is no magnet in this unit - the -S code is the optional way to get one for CMSE / DMSE switches. For current production, order the ACEJ20X125 and confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X125-100B |
| 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 ACEJ20X125-100B (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 ACEJ20X125-100B 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 ACPJ20X125-100B
| 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 ACPJ20X125-100B Is Used
Carton ejector on a case packer
The 157.1 N push at 0.5 MPa clears filled cartons off a forming station, and the stop screw trims the extend stroke between 25 mm and 125 mm to match different case sizes.
Part clamp in a CNC fixture
About 94 N of usable clamping force at 0.5 MPa holds small aluminium workpieces, and the short body fits where a full-length profile cylinder cannot.
Light vertical lift on an assembly bench
With a 2:1 margin the rod lifts about 8 kg vertically, ideal for raising a small pallet or nest at the end of a manual assembly line.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X125-100B with the ACEJ20X125-100B
Size the force first: a 16 mm bore gives 100.5 N push at 0.5 MPa, while stepping up to a larger bore buys headroom if 157.1 N at 0.5 MPa feels marginal for your load. The 100 mm window suits one cylinder covering several product lengths on the same station. Remember the stop screw is a mechanical end stop, not a mid-stroke lock - the rod still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switch sensing. This model is discontinued; the ACEJ20X125 is the current drop-in, so verify mounting dimensions before ordering.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X125-100B
- ✓ 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 ACPJ20X125-100B 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; theoretical maximum is 32 kgf at 1.0 MPa. The -100 code gives a 100 mm adjustment window: an external stop screw shortens the 125 mm extend stroke to any length from 25 mm upward. The 125 mm stroke is a made-to-order length, since the standard maximum for a 20 mm bore is 100 mm.
No - the ACPJ family is discontinued. The current-production replacement is the ACEJ20X125, an ISO 21287 compact cylinder in the same bore, stroke and force class. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. Also note this unit has no magnet; the -S code is the optional way to add one for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X125-100B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X125-100B replacement — usually within 7-8 hours.