This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X35-40B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X35-40B 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 ACPJ12X35-40B
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40B is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 35mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X35-40B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke35 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X35-40B
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40B
The ACPJ12X35-40B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 35 mm stroke by up to 40 mm, giving a usable range of 0-35 mm on site. At 0.5 MPa the 12 mm bore delivers 56.5 N push and 42.4 N pull, rising to 79.2 N push at 0.7 MPa. Because the short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, it slots into slim fixtures, small guarding and tight gantries where a full-length body simply will not fit.
For sizing, treat about 34 N (0.6 x the 56.5 N push) as the realistic working force at 0.5 MPa, which corresponds to lifting roughly 2.8 kg vertically with a 2:1 margin. The rod end is male thread (the B code), the port is M5x0.8, and a fixed TPU bumper decelerates the piston at each end. Note that no magnet is fitted on this version - the optional -S code is what enables CMSE / DMSE switch sensing. This model is discontinued; the current-production drop-in is the ACEJ12X35, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X35-40B |
| Bore size | Ø12 mm |
| Stroke | 35 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M3×0.5 |
| 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 50 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ12X35-40B (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 (Ø12mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 57 N | 42 N |
| 0.7 MPa | 79 N | 59 N |
| Max (@1.0 MPa) | 12 kgf | |
The ACEJ12X35-40B 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 ACPJ12X35-40B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×35 | 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 ACPJ12X35-40B Is Used
Micro part ejection from small molds
The 56.5 N push at 0.5 MPa is enough to strip tiny plastic or stamped parts off a small mold or nest, and the 0-35 mm adjustable range lets the operator set the exact eject depth on the machine.
Compact gating on electronics assembly lines
A short-body stop gate for PCB carriers: the trimmed extend stroke sets gate travel precisely, and ordering the -S version adds the magnet so CMSE / DMSE switches confirm gate closed.
Sample press in lab automation
With about 34 N of practical working force and a male-thread rod for quick tooling attachment, this bore class suits light sample pressing or vial capping stations inside compact instrument enclosures.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40B with the ACEJ12X35-40B
At 12 mm bore this is the lightest force class: 56.5 N push at 0.5 MPa. Step up to the 16 mm bore for 100.5 N push, or down only if you need less than 34 N of usable force. The 40 mm adjustment window suits stations where the final extend position is tuned during commissioning; remember the stop screw shortens the stroke and does not hold a load if air is lost. Mounting uses the FA/FB flange or LB foot family, and the male rod thread (B) pairs with I/Y knuckles. Since the ACPJ12X35-40B is discontinued, order the ACEJ12X35 as the current replacement and verify the ISO 21287 footprint first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X35-40B
- ✓ 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 ACPJ12X35-40B FAQ
At 0.5 MPa: 56.5 N push and 42.4 N pull. At 0.7 MPa: 79.2 N push and 59.4 N pull. Theoretical maximum is 11.5 kgf at 1.0 MPa. In practice plan on about 34 N of usable push at 0.5 MPa (0.6 of the rating), which lifts roughly 2.8 kg vertically with a 2:1 safety margin. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and the port is M5x0.8.
The -40 code is a 40 mm adjustment window: an external stop screw shortens the 35 mm extend stroke anywhere within that window, giving a 0-35 mm usable range. The stop is a mechanical end stop only - it never holds a load if air pressure is lost. The ACPJ12X35-40B is discontinued; the current-production replacement is the ACEJ12X35 (swap the P for an E), a drop-in in the same bore, stroke and force class. Confirm the ISO 21287 mounting dimensions before converting, since the ACP series was built to the DIN standard.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X35-40B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X35-40B replacement — usually within 7-8 hours.