This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X100-20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X100-20B 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 ACPJ20X100-20B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-20B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 100mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X100-20B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke100 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X100-20B
- 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 ACPJ20X100-20B
This is a double acting compact cylinder with an adjustable extend stroke, now discontinued. The 20 mm bore delivers 157.1 N push and 117.8 N pull 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 -20 code gives a 20 mm adjustment window: an external stop screw trims the 100 mm stroke down to 80 mm on site, so one cylinder covers an 80-100 mm range. Running speed is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which matters in tight jigs and gantries. With the 157.1 N push figure, plan for about 94 N of real work at 0.5 MPa, which lifts roughly 9 kg vertically - or about 4-5 kg with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and the B code gives a male 10 mm rod thread. Note the stop screw is a mechanical end stop, not a mid-stroke lock: on air loss the piston still drifts. This model is discontinued - the current drop-in is ACEJ20X100, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X100-20B |
| Bore size | Ø20 mm |
| Stroke | 100 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 ACEJ20X100-20B (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 ACEJ20X100-20B 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 ACPJ20X100-20B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -20 | 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 ACPJ20X100-20B Is Used
Fixture clamping on CNC pallets
The 80-100 mm adjustable window lets one cylinder serve several pallet variants, and 157.1 N push at 0.5 MPa clamps light aluminium workpieces without crushing.
Small-parts eject from assembly dies
At 219.9 N push at 0.7 MPa the 20 mm bore ejects stamped clips and connectors from shallow die pockets, with the stop screw setting exact ejection depth.
Packaging line push-off stations
Speeds of 30-500 mm/s suit diverting cartons off a belt at a guard-mounted station where the short body saves about 50% of the length of an ISO 15552 profile cylinder.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-20B with the ACEJ20X100-20B
Size both ways: the 16 mm bore gives 100.5 N push at 0.5 MPa if your load is lighter, while the 25 mm class pushes harder if 157.1 N is marginal. For vertical duty remember the stop screw cannot hold a load on air loss - add a separate brake or counterbalance if that matters. The B male rod thread suits I/Y knuckles directly; FA flange and LB foot mountings bolt to the same face. No magnet is fitted on this code, so position switches cannot be used - order the -S variant if you need CMSE / DMSE sensing. Since ACPJ is discontinued, specify ACEJ20X100 as the current replacement and verify the ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X100-20B
- ✓ 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 ACPJ20X100-20B FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push is 219.9 N and pull 164.9 N; theoretical maximum is 32 kgf at 1.0 MPa. The bore is 20 mm with a 10 mm male-threaded rod (B code), M5x0.8 ports, PT body thread, operating pressure 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, and fixed TPU bumpers at both ends. The -20 code trims the 100 mm extend stroke by up to 20 mm.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ20X100, which keeps the same bore, stroke and force class in the ISO 21287 short-body format. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ACP was built to the older DIN standard. Also note this -20B code has no magnet; if you need CMSE / DMSE switch positions, order the -S magnet option on the replacement.
Related AirTAC ACE Cylinders
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