This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X100-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X100-50S 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 ACPJ20X100-50S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50S 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 ACEJ20X100-50S (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 → ACEJ20X100-50S
- 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 ACPJ20X100-50S
This is a double acting compact cylinder with an adjustable extend stroke: the -50 code gives a 50 mm window, so the stop screw trims the 100 mm stroke anywhere down to 50 mm on site. 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 S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted directly on the hard-anodized aluminium body.
In practice that 157.1 N push supports roughly 94 N of real work at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and gantries. Note this ACPJ model is discontinued; the current-production drop-in is the ACEJ20X100, so confirm ISO 21287 mounting dimensions before swapping. A fixed TPU bumper sits at both ends and speed runs 30-500 mm/s.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X100-50S |
| 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 ACEJ20X100-50S (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 ACEJ20X100-50S 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 ACPJ20X100-50S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -50 | 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 ACPJ20X100-50S Is Used
Fixture clamping on CNC pallets
The 50-100 mm adjustable window lets a machinist trim the clamp stroke per fixture, and 157.1 N at 0.5 MPa holds light aluminum parts during drilling.
Position-flagged ejector on packaging lines
With the fitted magnet and a CMSE switch, the PLC confirms each 100 mm eject stroke of a carton pusher, running at up to 500 mm/s.
Small parts press-fit station
About 8 kg of vertical lift capacity with a 2:1 margin suits pressing bushings into plastic housings on an electronics assembly bench.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50S with the ACEJ20X100-50S
Size against the 157.1 N push at 0.5 MPa: the 16 mm bore gives 100.5 N if the load is lighter, while stepping up to a larger bore adds force if you need more than about 94 N of usable thrust. The 50 mm adjuster shortens the extend stroke only - it never lengthens past 100 mm and it is a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the fitted -S magnet pairs with CMSE / DMSE switches. Since this model is discontinued, order the ACEJ20X100 as the current replacement and verify the ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X100-50S
- ✓ 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 ACPJ20X100-50S 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. The -50 code sets a 50 mm adjustment window, so the stop screw trims the 100 mm extend stroke anywhere down to 50 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
It is a short ISO 21287-class compact cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, M6x1.0 female rod thread and M5x0.8 ports, saving about 50% of the mounting length of an ISO 15552 profile cylinder. Fixed TPU bumpers decelerate at both ends, and the fitted -S magnet accepts CMSE / DMSE switches. This model is discontinued - the current drop-in is the ACEJ20X100; confirm ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X100-50S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X100-50S replacement — usually within 7-8 hours.