This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X150-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X150-30S 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 ACPJ20X150-30S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-30S 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 ACEJ20X150-30S (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 → ACEJ20X150-30S
- 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 ACPJ20X150-30S
The ACPJ20X150-30S is a double acting compact cylinder with an adjustable stroke: a stop screw trims the 150 mm extend stroke by up to 30 mm, giving a usable range of 120-150 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 peak of 32 kgf at 1.0 MPa. The 150 mm stroke exceeds the 100 mm standard for this bore, so it is a made-to-order build. This model carries the optional -S magnet, so CMSE / DMSE switches can be mounted for end-of-stroke signalling.
Its hard-anodized aluminium short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper sits at both ends, and the S45C hard-chrome rod runs at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) air. Note that the stop screw only limits the extend stroke - it is not a mid-stroke lock, so the piston still drifts if air is lost. Plan on roughly 94 N (about 9.6 kgf) of real work at 0.5 MPa, or lift about 8 kg vertically with a 2:1 margin. The ACPJ family is discontinued; the current-production drop-in is the ACEJ20X150 - confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-30S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-30S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X150-30S |
| 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 ACEJ20X150-30S (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 ACEJ20X150-30S 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 ACPJ20X150-30S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -30 | 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 ACPJ20X150-30S Is Used
Clamp fixture on a CNC milling jig
The 30 mm trim window lets you dial the 150 mm stroke down to 120 mm to match part height, and the 157.1 N push at 0.5 MPa holds aluminium workpieces firmly during machining.
Carton ejector on a packing line
At 30-500 mm/s the rod pushes finished cartons off a conveyor lane, and the fitted -S magnet with a DMSE switch confirms full extension before the next box indexes.
Sample lift in a lab automation gantry
The short body saves about 50% of the length of an ISO 15552 profile cylinder, fitting under a low gantry beam while lifting about 8 kg vertically with a 2:1 margin.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-30S with the ACEJ20X150-30S
Size the bore both ways: the 16 mm bore gives 100.5 N push at 0.5 MPa if your load is lighter, while the next size up, a 25 mm bore, adds margin for heavier clamping. With 157.1 N push at 0.5 MPa, keep the working load near 94 N so the cylinder is not running at its limit. The female M6x1.0 rod thread accepts standard I/Y knuckles, and FA flange or LB foot mounts bolt to the ISO 21287 face. If you need position feedback, this -S version already carries the magnet for CMSE / DMSE switches. For new projects, order the ACEJ20X150 instead - this ACPJ model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X150-30S
- ✓ 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 ACPJ20X150-30S 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; the theoretical maximum is 32 kgf at 1.0 MPa. The 20 mm bore has an M5x0.8 port, a 10 mm rod with female M6x1.0 thread, and runs on 0.15-1.0 MPa (22-145 psi) air at 30-500 mm/s. The 150 mm stroke is non-standard (made to order), with a 30 mm adjustment window trimming the extend stroke to 120-150 mm.
Order the ACEJ20X150, the ISO 21287 successor: swap the P for an E and you get the same bore, stroke and force class in current production. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. The ACEJ keeps FA/LB mounting options and the -S magnet code for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X150-30S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X150-30S replacement — usually within 7-8 hours.