This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X120-100 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X120-100 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 ACPJ20X120-100
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100 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 ACEJ20X120-100 (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 → ACEJ20X120-100
- 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 ACPJ20X120-100
This is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 120 mm stroke by up to 100 mm on site, giving a usable range of 20-120 mm. 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. Note that the 120 mm stroke exceeds the 100 mm standard maximum for this bore, so it is a made-to-order build. The ACPJ family is discontinued; the current drop-in is ACEJ20X120 in the same bore, stroke and force class.
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 slots into shallow slides and guard-mounted tooling. A fixed TPU bumper sits at both ends, and the stop screw is a mechanical end stop only - it never holds a load if air is lost. Plan on roughly 94 N of real work at 0.5 MPa (about 60% of the push rating), which lifts around 9 kg vertically with a 2:1 margin. The optional -S magnet enables CMSE / DMSE switches; this code has no magnet fitted. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-100 |
| 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 ACEJ20X120-100 (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 ACEJ20X120-100 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 ACPJ20X120-100
| 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 ACPJ20X120-100 Is Used
Carton flap tuck-down on packing lines
The 20-120 mm adjustable range lets one cylinder handle shallow and deep carton formats; 157.1 N push at 0.5 MPa seats flaps without crushing the board.
Fixture clamp in a compact CNC jig
The short body fits where a full-length profile cylinder will not, and the stop screw sets exact clamp depth per part changeover.
Ejector on a small parts sorting chute
With the optional -S magnet, CMSE / DMSE switches confirm each 120 mm extend cycle; the 30-500 mm/s speed range matches fast sort rates.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-100 with the ACEJ20X120-100
At 157.1 N push / 117.8 N pull at 0.5 MPa, this 20 mm bore suits clamps and slides in the 9 kg vertical-lift class with a 2:1 margin. Step down to the 16 mm bore (100.5 N push) for lighter fixtures, or up to the 25 mm class when you need more thrust at the same short body. The 100 mm adjustment window means one cylinder can serve several fixture depths - set the stop screw rather than re-plumbing. Match FA flange or LB foot brackets to the ISO 21287 face, and order the -S code if CMSE / DMSE position sensing is needed. For new builds, specify ACEJ20X120, the current-production replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-100
- ✓ 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 ACPJ20X120-100 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 -100 code gives a 100 mm adjustment window, so the stop screw trims the extend stroke anywhere in a 20-120 mm range. The 120 mm stroke is made to order because the standard maximum for this bore is 100 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The ACPJ family is no longer in production. Order ACEJ20X120, the ISO 21287 successor with the same bore, stroke and force class, and confirm the mounting dimensions against your fixture before swapping. For sensing, the magnet is the optional -S code on either family; without -S no magnet is fitted and CMSE / DMSE switches cannot be mounted.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-100
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-100 replacement — usually within 7-8 hours.