This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X150-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X150-50 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 ACPJ20X150-50
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50 is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 150mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X150-50 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke150 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X150-50
- 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 ACPJ20X150-50
The ACPJ20X150-50 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 150 mm stroke by up to 50 mm on site, giving a usable range of 100-150 mm. At 0.5 MPa the 20 mm bore pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N, with a theoretical 32 kgf at 1.0 MPa. The 150 mm stroke exceeds the 100 mm maximum standard stroke for bore 20, so this unit is made to order. Note that this model is discontinued - the current-production replacement is the ACEJ20X150.
In practice, plan for roughly 94 N of real work at 0.5 MPa (about 60% of the rated push), 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 gantries and guarding. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries an S45C hard-chrome 10 mm rod, and the rod end is female M6x1.0 with M5x0.8 ports. Speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X150-50 |
| Bore size | Ø20 mm |
| Stroke | 150 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 ACEJ20X150-50 (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 ACEJ20X150-50 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 ACPJ20X150-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 ACPJ20X150-50 Is Used
Benchtop press fixture
The 157.1 N push at 0.5 MPa suits light staking and marking of small aluminium housings, with the 50 mm window letting one cylinder serve several die heights between 100 and 150 mm.
Packaging line reject pusher
With about 94 N of usable force, the cylinder can kick underweight cartons off a narrow conveyor lane, and the compact body fits beside the frame where a full-length cylinder will not.
Lab sample clamp
The 100-150 mm adjustable range clamps sample trays in an automated test rig, lifting about 8 kg vertically with a 2:1 margin at 0.5 MPa.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50 with the ACEJ20X150-50
Size between bores: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while stepping up to a larger bore buys force you may not need for a 150 mm stroke at this class. If your fixture needs position feedback, remember this code has no magnet - order the -S version to enable CMSE / DMSE switches. FA/FB flange and LB foot mounts bolt to the standard face. The stop screw only limits the extend stroke mechanically; on air loss the piston can still drift, so it is not a load-holding device. For new designs, specify the ACEJ20X150, the current drop-in successor - confirm ISO 21287 mounting dimensions before swapping since the ACP is DIN-standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X150-50
- ✓ 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 ACPJ20X150-50 FAQ
At 0.5 MPa: push 157.1 N, pull 117.8 N. At 0.7 MPa: push 219.9 N, pull 164.9 N. Theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and the port is M5x0.8. A practical rule of thumb is about 94 N of usable push at 0.5 MPa, roughly 8 kg of vertical lift with margin.
The -50 code is a 50 mm window: an external stop screw shortens the extend stroke anywhere between 100 and 150 mm; it cannot lengthen the stroke past 150 mm. The stop is a mechanical end stop, not a mid-stroke lock, so the rod can still drift on air loss. The ACPJ family is discontinued - the current-production replacement is the ACEJ20X150, which matches the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, because the ACP is DIN-standard.
Related AirTAC ACE Cylinders
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