This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X45-10SB, 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 ACPJ12X45-10SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X45-10SB is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 45mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X45-10SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke45 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X45-10SB
- 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 ACPJ12X45-10SB
This double acting compact cylinder from AirTAC's ACPJ line carries a 12 mm bore with a 45 mm stroke that an external stop screw trims by up to 10 mm, giving a usable extend range of 35-45 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N and 59.4 N at 0.7 MPa. The -S code on this unit means the magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke sensing. The B code gives a male rod thread on the 6 mm rod, and the air port is M5x0.8.
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 slim test fixtures and compact pick stations. As a planning figure, about 34 N of the push force is realistic working output at 0.5 MPa, enough to lift roughly 1.7 kg vertically with a 2:1 margin. Note that this ACPJ model is discontinued; the current-production drop-in is ACEJ12X45 in the same bore, stroke and force class, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-10SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-10SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X45-10SB |
| Bore size | Ø12 mm |
| Stroke | 45 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 ACEJ12X45-10SB (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 ACPJ12X45-10SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×45 | 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 ACPJ12X45-10SB Is Used
Lab sample ejector
The 34 N working push at 0.5 MPa ejects microplate samples or test tubes from a fixture nest, and the 35-45 mm trimmed stroke matches shallow drawer depth.
PCB press-fit check station
With the fitted magnet driving a CMSE switch, the controller confirms the 45 mm extend before a 12 mm-bore press of 56.5 N seats a connector.
Watch-part clamping fixture
The male rod thread on the 6 mm rod takes a knuckle to clamp small watch or camera components, with the stop screw dialing the clamp travel between 35 and 45 mm.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X45-10SB with the ACEJ12X45-10SB
At 12 mm bore this is the smallest force step 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. If your part weight exceeds about 1.7 kg vertical lift with margin, step up a bore. The 45 mm stroke sits inside the 50 mm maximum standard stroke for this bore, so no made-to-order length is needed. The stop screw shortens the extend stroke only and acts as an end stop, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange and LB foot mountings plus I/Y rod knuckles bolt to the ISO 21287 face. Since ACPJ is discontinued, order ACEJ12X45 and verify the mounting dimensions against your fixture.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X45-10SB
- ✓ 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 ACPJ12X45-10SB FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa that rises to 79.2 N push and 59.4 N pull. The theoretical maximum is 11.5 kgf at 1.0 MPa. For sizing, plan on about 34 N of real work at 0.5 MPa, which lifts roughly 1.7 kg vertically with a 2:1 margin. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, and speed runs 30-500 mm/s.
The -10 code is a 10 mm window: a stop screw at the head shortens the 45 mm extend stroke on site, so the rod can be set anywhere from 35 to 45 mm. It is a mechanical end stop for the extend direction only and never holds a load if air is lost. Because this unit carries the optional -S magnet, CMSE / DMSE reed or solid-state switches can be fitted. The ACPJ family is discontinued; ACEJ12X45 is the current ISO 21287 drop-in with the same bore, stroke and force class, so confirm the mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X45-10SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X45-10SB replacement — usually within 7-8 hours.