This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X40-10SB, the same code under the new prefix. 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 ACPJ12X40-10SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB is a double acting, double rod, 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 ACEJ12X40-10SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X40-10SB
- 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 ACPJ12X40-10SB
This is a double acting, adjustable-stroke compact cylinder in the discontinued AirTAC ACPJ series. The 12 mm bore delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa), and the -10 code gives a 10 mm trim window: an external stop screw shortens the 40 mm extend stroke on site, so the usable range is 30-40 mm. The B code specifies a male rod thread on the 6 mm rod, and the S code means the magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted directly on the hard-anodized aluminium body.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it suits tight jigs and guarded assemblies. A fixed TPU bumper sits at both ends, speed runs 30-500 mm/s, and pressure spans 0.15-1.0 MPa (22-145 psi). For sizing, plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rated push), which corresponds to lifting about 3 kg vertically with a 2:1 margin. Note this model is discontinued: the current-production replacement is ACEJ12X40, and buyers should confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X40-10SB |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting, double rod, 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 ACEJ12X40-10SB (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 | Force (both ways) |
|---|---|
| 0.5 MPa | 42 N |
| 0.7 MPa | 59 N |
| Max (@1.0 MPa) | 9 kgf |
ACPJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -10 | 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 (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to tip lightweight molded caps or clips off a core pin, and the 10 mm trim window lets the operator fine-tune the 40 mm stroke so parts clear the fixture without overtravel.
Position-checked gate on a benchtop tester
Because the -S magnet is fitted, a CMSE switch on the 12 mm body confirms the gated fixture is fully retracted before a test cycle starts, at speeds from 30-500 mm/s.
Light clamping in an electronics assembly jig
About 3 kg of vertical lift capability with a 2:1 margin covers holding PCBs or connector housings down during a screwdriving step, and the male rod thread accepts a knuckle for the clamp tip.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X40-10SB with the ACEJ12X40-10SB
At 12 mm bore this is the smallest force class in the family: 56.5 N push at 0.5 MPa versus 100.5 N for the 16 mm bore and 157.1 N for the 20 mm bore. Step up if your part weight or friction load exceeds the roughly 34 N usable figure at 0.5 MPa. The 40 mm stroke sits inside the 50 mm maximum standard stroke for this bore, so no made-to-order length is needed. The 10 mm adjust window trims the extend stroke only - it is a mechanical end stop, not a mid-stroke lock, so the piston will still drift if air is lost. Match FA/FB flange or LB foot mounts and I/Y rod knuckles to the mounting face, and remember the magnet here is the optional -S code carried by this unit. For new designs, order the ACEJ12X40 instead, as ACPJ is discontinued.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X40-10SB
- ✓ 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 ACPJ12X40-10SB 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. The -10 code gives a 10 mm adjustment window: the external stop screw shortens the 40 mm extend stroke, so the usable range is 30-40 mm. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), with a 1.5 MPa (215 psi) proof pressure, and the M5x0.8 port depends only on the 12 mm bore.
No - the ACPJ series is discontinued. The current-production drop-in is the ACEJ12X40, which swaps the P for an E and matches 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 before swapping. This unit carries the optional -S magnet for CMSE / DMSE switches, has a male rod thread on the 6 mm rod, and uses fixed TPU bumpers at both ends.
Related AirTAC ACE Cylinders
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