This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X120-100S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X120-100S 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 ACPJ20X120-100S
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100S is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø20mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ20X120-100S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ20 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- StatusDiscontinued → ACEJ20X120-100S
- 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 ACPJ20X120-100S
Double acting and adjustable, the ACPJ20X120-100S is a discontinued DIN-standard compact cylinder with a 20 mm bore, a 120 mm made-to-order stroke (above the 100 mm standard limit for this bore) and a 100 mm trim window: an external stop screw shortens the extend stroke on site anywhere between 20 and 120 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa. In practice that means roughly 94 N of usable push at 0.5 MPa, enough to lift 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 fixtures, and the -S code on this model carries the optional magnet, so CMSE / DMSE switches can be mounted for end-of-stroke sensing. A hard-anodized aluminium body, S45C hard-chrome rod, fixed TPU bumpers at both ends and a 30-500 mm/s speed range complete the build. This model is discontinued; the current-production drop-in is the ACEJ20X120, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-100S |
| Bore size | Ø20 mm |
| Stroke | 120 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 ACEJ20X120-100S (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 ACEJ20X120-100S 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 ACPJ20X120-100S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -100 | 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 ACPJ20X120-100S Is Used
Fixture clamping with trim
Clamps PCB test fixtures or small die-set parts where the 100 mm window lets one cylinder serve several part heights, trimming extend stroke from 20 to 120 mm on the machine.
Small part press-fit
Presses bearings, dowels or terminals into housings on an electronics assembly bench using about 94 N of usable push at 0.5 MPa, with CMSE switches confirming bottom of stroke.
Packaging line diverters
Kicks cartons or blisters off a conveyor lane; the short body fits under low guards where a full-length profile cylinder would not, and the 30-500 mm/s speed range matches line tempo.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100S with the ACEJ20X120-100S
At 20 mm bore this sits mid-range: the 16 mm bore pushes 100.5 N at 0.5 MPa, while stepping up gives more force in the same compact family. Size on the 94 N usable push figure rather than the full 157.1 N rating. Note the stop screw trims the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts on air loss. FA/FB flange and LB foot mountings suit ISO 21287 fixtures, and the -S magnet on this unit accepts CMSE / DMSE switches. For new builds, order the ACEJ20X120 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-100S
- ✓ 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 ACPJ20X120-100S FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push is 219.9 N and pull 164.9 N. Theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof rating, air filtered to 40 um, and speed 30-500 mm/s. The 120 mm stroke is a made-to-order length (standard tops out at 100 mm for this bore) with a 100 mm adjustment window.
A stop screw shortens the extend stroke on site by up to 100 mm, giving a usable range of 20-120 mm; it cannot lengthen the stroke past the ordered 120 mm and it does not hold a load if air is lost. This ACPJ is discontinued - the current drop-in is the ACEJ20X120 (same bore, stroke and force class). Confirm ISO 21287 mounting dimensions before swapping, since the ACP follows the DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-100S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-100S replacement — usually within 7-8 hours.