This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X150-20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X150-20B 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 ACPJ20X150-20B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-20B 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 ACEJ20X150-20B (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 → ACEJ20X150-20B
- 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 ACPJ20X150-20B
This is a double acting compact cylinder with an adjustable extend stroke, built to the DIN-standard short-body format. 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 maximum of 32 kgf at 1.0 MPa. The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight gantries and guarding where a full-length body cannot. The 150 mm stroke exceeds the 100 mm standard limit for bore 20, so this unit is made to order.
The -20 code sets a 20 mm adjustment window: a stop screw trims the extend stroke on site anywhere between 130 and 150 mm, and a fixed TPU bumper sits at both ends. The male rod thread (B code) bolts to I/Y knuckles on the ISO 21287 face. As a rule of thumb, plan for roughly 94 N of usable work at 0.5 MPa, which lifts about 9 kg vertically with margin. Note this model is discontinued; the current-production drop-in is ACEJ20X150 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X150-20B |
| 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 ACEJ20X150-20B (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 ACEJ20X150-20B 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 ACPJ20X150-20B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -20 | 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 ACPJ20X150-20B Is Used
Jig clamping on CNC fixtures
The 157.1 N push at 0.5 MPa clamps aluminium workpieces in machining jigs, and the 130-150 mm trim range lets the setter dial in clamp position without shimming.
Small-parts press fitting
About 94 N of usable force at 0.5 MPa suits light press-in tasks such as bushings into plastic housings on an electronics assembly bench.
Product divert on packaging lines
The long 150 mm reach pushes cartons off a conveyor lane, with the short body saving roughly half the mounting length of an ISO 15552 profile cylinder under low guards.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X150-20B with the ACEJ20X150-20B
Size both ways: if 157.1 N push at 0.5 MPa is more than the job needs, the 16 mm bore gives 100.5 N; if the load needs more, step up to a 25 mm or 32 mm bore. The stop screw is a mechanical end stop only - on air loss the piston still drifts, so do not treat it as a load-holding brake. This version has no magnet (no S code), so no CMSE or DMSE switch can be mounted; order the -S variant if position sensing is needed. FA/FB flanges and LB feet bolt straight to the ISO 21287 face. Since ACPJ is discontinued, specify ACEJ20X150 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X150-20B
- ✓ 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 ACPJ20X150-20B 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 code gives a 20 mm adjustment window, so the extend stroke can be trimmed from 150 mm down to 130 mm with the stop screw. The 150 mm stroke is a made-to-order length since bore 20 normally tops out at 100 mm standard.
It is a DIN-standard compact cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, M5x0.8 ports, a male rod thread and fixed TPU bumpers at both ends, running at 0.15-1.0 MPa (22-145 psi) and 30-500 mm/s. The ACPJ family is discontinued; the current-production drop-in is ACEJ20X150 in the same bore, stroke and force class - confirm ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X150-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X150-20B replacement — usually within 7-8 hours.