This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ACEJ12X40-40SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ACEJ12X40-40SB 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 ACPJ12X40-40SB
The AirTAC Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-40SB is a double acting, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 40mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X40-40SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X40-40SB
About the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-40SB
The ACPJ12X40-40SB is a double acting, adjustable-stroke compact cylinder in the discontinued AirTAC ACPJ range. Its 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical peak of 11.5 kgf at 1.0 MPa. The -40 code sets a 40 mm adjustment window: a stop screw trims the extend stroke anywhere from 0 to 40 mm on site, so one cylinder covers several jig positions. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clamped straight onto the body for end-of-stroke sensing.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits cramped fixtures, guarding and pick stations. A hard-anodized aluminium body with an S45C hard-chrome 6 mm rod, fixed TPU bumpers at both ends, M5x0.8 ports and a male rod thread (the B code) round out the build. As a planning figure, budget about 34 N (roughly 3 kg of vertical lift with a 2:1 margin) of real work at 0.5 MPa rather than the full rating. Note that this model is discontinued: the current-production drop-in is the ACEJ12X40, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-40SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-40SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X40-40SB |
| Bore size | Ø12 mm |
| Stroke | 40 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 ACEJ12X40-40SB (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 (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 ACEJ12X40-40SB 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 ACPJ12X40-40SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 ACPJ12X40-40SB Is Used
Small-part ejection from plastic molds
The trimmed 0-40 mm extend stroke nudges finished clips or connectors off a mold or nest, with 56.5 N of push at 0.5 MPa enough for light free-falling parts.
Position-verified test fixtures
Because the -S magnet is fitted, CMSE or DMSE switches confirm the rod has reached the trimmed stop before an electrical test or marking cycle starts.
Clamping PCBs in burn-in racks
About 34 N of usable clamp force at 0.5 MPa holds circuit boards gently against contacts, and the short body fits inside dense rack pitch where a full-length cylinder cannot.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-40SB with the ACEJ12X40-40SB
Size against the load: at 0.5 MPa this bore pushes 56.5 N, so keep continuous work near 34 N. If your part or tooling weighs more, step up to the 16 mm bore (100.5 N push at 0.5 MPa); for lighter, tighter duties the same family starts at 12 mm. The male rod thread (B) pairs with I/Y knuckles, and FA/FB flange or LB foot mounts bolt to the standard face. The -S magnet on this unit accepts CMSE / DMSE switches; without an -S code there is no magnet. The stop screw is a mechanical end stop for the extend stroke only - it is not a mid-stroke lock, and on air loss the piston still drifts. This model is discontinued; order the ACEJ12X40 as the current replacement and verify ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X40-40SB
- ✓ 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 ACPJ12X40-40SB FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa it pushes 79.2 N and pulls 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. It is double acting with a 40 mm stroke trimmed by a 40 mm adjustment window, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, M5x0.8 ports, a 6 mm male-thread rod and fixed TPU bumpers both ends.
AirTAC no longer produces the ACPJ family. The current drop-in is the ACEJ12X40 (swap the P for an E), an ISO 21287 compact cylinder in the same bore, stroke and force class with a matching mounting family. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions against your fixture before swapping.
Related AirTAC ACE Cylinders
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