This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X100-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X100-50 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 ACPJ20X100-50
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50 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 ACEJ20X100-50 (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 → ACEJ20X100-50
- 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 ACPJ20X100-50
The ACPJ20X100-50 is a double acting compact cylinder with an adjustable stroke, now discontinued. Its 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N push at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. The -50 code sets a 50 mm adjustment window, so an external stop screw trims the extend stroke anywhere between 50 and 100 mm on site. Air filtered to 40 um drives it at 0.15-1.0 MPa (22-145 psi) with speeds of 30-500 mm/s.
The short ISO 21287-class body cuts mounting length by roughly half versus an ISO 15552 profile cylinder, which matters in cramped jig plates and guarding. A hard-anodized aluminium body carries an S45C hard-chrome rod, with a fixed TPU bumper at each end. Plan on about 94 N of usable push at 0.5 MPa, which lifts roughly 8 kg vertically with a 2:1 margin. The magnet is not fitted here; order the -S code if you later need CMSE / DMSE switch sensing. For new builds, the current-production ACEJ20X100 is the drop-in successor - confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X100-50 |
| 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 ACEJ20X100-50 (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 ACEJ20X100-50 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 ACPJ20X100-50
| 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 ACPJ20X100-50 Is Used
Fixture clamp with trimmable reach
On a CNC milling fixture, the 50 mm window lets a technician dial the clamp stroke between 50 and 100 mm to suit different part heights, using about 94 N of practical clamping force at 0.5 MPa.
Carton push-off on a packing line
A packaging station ejects filled cartons sideways; the 157.1 N push at 0.5 MPa slides a 6-8 kg box off the conveyor, and the short body fits under a low guard rail.
Sample press in a lab bench unit
A benchtop sample-prep module presses caps onto vials; the 219.9 N push at 0.7 MPa seats caps firmly, and the 30-500 mm/s speed range lets the cycle be tuned per recipe.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X100-50 with the ACEJ20X100-50
At 20 mm bore this sits mid-range: the 16 mm bore gives 100.5 N push at 0.5 MPa for lighter clamps, while stepping up adds force if 157.1 N push feels marginal. The 100 mm stroke is the maximum standard stroke for bore 20, so no made-to-order length is needed. The stop screw only shortens the extend stroke - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange or LB foot mounting suits fixture plates, and the female M6x1.0 rod thread takes standard knuckles. Since this model is discontinued, spec the ACEJ20X100 and verify the ISO 21287 footprint.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X100-50
- ✓ 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 ACPJ20X100-50 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 -50 code gives a 50 mm adjustment window, so the external stop screw trims the 100 mm extend stroke down to as little as 50 mm. It runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um at 30-500 mm/s, with a fixed TPU bumper at both ends.
Sensing needs the optional -S magnet code, which this model does not carry, so no CMSE or DMSE switch can be mounted as ordered - order an -S version if sensing is required. The ACPJ family is discontinued; the current-production replacement is the ACEJ20X100, which matches the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP follows the DIN-standard footprint.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X100-50
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