This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X150-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X150-50S 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 ACPJ20X150-50S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50S 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 ACEJ20X150-50S (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 → ACEJ20X150-50S
- 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 ACPJ20X150-50S
This ACPJ20X150-50S is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 150 mm stroke by up to 50 mm, giving a usable range of 100-150 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. Its 150 mm stroke exceeds the 100 mm standard maximum for this bore, so it is a made-to-order build. Note: this model is discontinued - the current-production replacement is the ACEJ20X150, so confirm ISO 21287 mounting dimensions before swapping.
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. Because the -S code is on this unit, the magnet is fitted and CMSE / DMSE reed or solid-state switches can be mounted directly. A practical sizing figure: about 0.6 of the push force, roughly 94 N, is a realistic working load at 0.5 MPa, which corresponds to lifting about 8 kg vertically with a 2:1 margin. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries an S45C hard-chrome rod, and speed runs 30-500 mm/s.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X150-50S |
| 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 ACEJ20X150-50S (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 ACEJ20X150-50S 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 ACPJ20X150-50S
| 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 ACPJ20X150-50S Is Used
Fixture clamping on CNC pallets
The 157.1 N push at 0.5 MPa secures aluminium brackets in machining fixtures, and the 100-150 mm trim range lets one cylinder serve different pallet heights.
Carton push-off on packaging lines
With about 94 N of practical working force, this unit diverts small cartons off a conveyor lane, while CMSE switches (magnet fitted) confirm each push completed.
Sample press in lab automation
The short body fits inside compact analytical enclosures where an ISO 15552 profile cylinder would not, pressing sample vials with repeatable 100-150 mm travel.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-50S with the ACEJ20X150-50S
At 20 mm bore you get 157.1 N push at 0.5 MPa - if your load needs less, the 16 mm bore offers 100.5 N in the same family; if you need more, step up a frame size for roughly 1.5x the force. The 50 mm window means you can dial the extend stroke anywhere between 100 and 150 mm, but remember the stop screw is an end stop only: on air loss the piston still drifts, so do not treat it as a load-holding lock. FA/FB flange or LB foot mounts bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke sensing. Order the ACEJ20X150 as the current drop-in successor.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X150-50S
- ✓ 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 ACPJ20X150-50S 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 150 mm extend stroke can be trimmed anywhere down to 100 mm with the stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
Yes - this unit carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount on the body for end-of-stroke detection. The ACPJ family is discontinued; the current-production replacement is the ACEJ20X150, an ISO 21287 compact cylinder in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ACP was built to a DIN-standard footprint.
Related AirTAC ACE Cylinders
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