This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ20X120-40SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ20X120-40SB 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 ACPJ20X120-40SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-40SB 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 ACEJ20X120-40SB (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 → ACEJ20X120-40SB
- 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 ACPJ20X120-40SB
Double acting and adjustable, this discontinued ACPJ20X120-40SB carries a 20 mm bore with a 120 mm made-to-order stroke (above the 100 mm standard limit for bore 20) and a 40 mm trim window, so an external stop screw shortens the extend stroke anywhere in the 80-120 mm range. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. The -S code on this model means the optional magnet is fitted, so CMSE / DMSE reed or solid-state switches can be clamped straight onto the body for end-of-stroke signalling.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped fixtures a full-length body cannot. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers at both ends, and a male rod thread (B code) with PT ports. As a rule of thumb, budget about 94 N (roughly 9 kg) of real work at 0.5 MPa, which lifts about 4 kg vertically with a 2:1 margin. Production has ended: the current drop-in is the ACEJ20X120 - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-40SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-40SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ20X120-40SB |
| 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 ACEJ20X120-40SB (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 ACEJ20X120-40SB 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 ACPJ20X120-40SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×120 | 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 ACPJ20X120-40SB Is Used
Fixture clamping on CNC pallets
The 157.1 N push at 0.5 MPa seats small aluminium or plastic workpieces in drill jigs, and the 80-120 mm trim window lets one cylinder serve several pallet heights.
Position-checked ejector on assembly stations
With the fitted -S magnet, CMSE or DMSE switches confirm the rod has reached the trimmed extend position before the next station indexes.
Bottle-capping press on a packaging line
About 9 kg of usable force at 0.5 MPa presses caps onto 100-500 ml containers, and the compact body fits under low guard panels.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ20X120-40SB with the ACEJ20X120-40SB
Size both ways before committing: bore 16 delivers 100.5 N push at 0.5 MPa, while bore 25-class and larger bodies step up from this model's 157.1 N. If your load needs mid-stroke holding, note the stop screw is a mechanical end stop only - on air loss the piston still drifts, so add a valve or external lock. This unit already includes the -S magnet for CMSE / DMSE switches and the B male rod thread; FA/FB flange and LB foot mountings bolt to the ISO 21287 face. Because the 120 mm stroke is non-standard for bore 20, order it made-to-order or specify the ACEJ20X120 replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ20X120-40SB
- ✓ 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 ACPJ20X120-40SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa, 219.9 N push and 164.9 N pull; theoretical maximum is 32 kgf at 1.0 MPa. The -40 code gives a 40 mm adjustment window, so the extend stroke can be trimmed anywhere between 80 and 120 mm. The 120 mm stroke itself is a made-to-order length, since bore 20 normally tops out at 100 mm standard. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ20X120, which keeps the same bore, stroke and force class in the ISO 21287 short-body format. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping. This specific unit carries the optional -S magnet and a male rod thread (B code); on replacements ordered without -S there is no magnet, so add the S code if you need CMSE / DMSE switch position feedback.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ20X120-40SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ20X120-40SB replacement — usually within 7-8 hours.