This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X150-40SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X150-40SB 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 ACPJ20X150-40SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-40SB 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 ACEJ20X150-40SB (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 → ACEJ20X150-40SB
- 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 ACPJ20X150-40SB
This is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 150 mm stroke anywhere inside a 40 mm window, so the working range is 110-150 mm. The 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 ceiling of 32 kgf at 1.0 MPa. The 150 mm stroke exceeds the 100 mm standard maximum for bore 20, so it is a made-to-order build. Note that this model is discontinued; the current-production successor is ACEJ20X150, the same bore, stroke and force class.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped indexing tables and gantry pick stations. Because the -S magnet is fitted on this unit, CMSE or DMSE reed and solid-state switches can be clamped straight onto the hard-anodized aluminium body. The male (B code) rod thread carries the load, and a fixed TPU bumper at each end decelerates the piston. For sizing, count on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. Confirm ISO 21287 mounting dimensions before swapping in the ACEJ.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-40SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-40SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X150-40SB |
| 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 ACEJ20X150-40SB (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 ACEJ20X150-40SB 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 ACPJ20X150-40SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -40 | 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 ACPJ20X150-40SB Is Used
Indexing dial-table ejection
Trims the extend stroke between 110 and 150 mm to eject finished parts off a rotary indexing fixture without retuning the stop each changeover.
Small pallet lift-assist
With about 8 kg of vertical lift capacity at a 2:1 margin, it raises small palletized trays or lids on a compact assembly cell gantry.
Switched end-position check
The fitted -S magnet lets a CMSE or DMSE switch confirm full retract on a PCB test press before the next cycle is released.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-40SB with the ACEJ20X150-40SB
Size the bore both ways: if 157.1 N push at 0.5 MPa is more than your jig needs, the 16 mm bore gives 100.5 N; if you need more, step up to a 25 mm or 32 mm bore in the ACEJ family. Remember the adjuster is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the piston still drifts if air is lost. This unit already carries the optional -S magnet for CMSE / DMSE switches and the B male rod thread; FA flange or LB foot mounts bolt to the standard face. Since the ACPJ is discontinued, order ACEJ20X150 as the drop-in and verify the ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X150-40SB
- ✓ 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 ACPJ20X150-40SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N. The theoretical maximum is 32 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C.
The -40 code sets a 40 mm window: an external stop screw shortens the 150 mm extend stroke on site, giving a usable 110-150 mm range; it cannot lengthen the stroke past 150 mm. The bumper at each end is a fixed TPU pad, not a load brake. This ACPJ is discontinued - the current drop-in is ACEJ20X150, so confirm the ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
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