This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X20-10B, 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 ACPJ12X20-10B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X20-10B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X20-10B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X20-10B
- 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 ACPJ12X20-10B
Double acting and adjustable, the ACPJ12X20-10B is a discontinued DIN-standard compact cylinder: 12 mm bore, 20 mm stroke and a 10 mm adjustment window, so an external stop screw trims the extend stroke anywhere from 10 to 20 mm on site. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those figures rise to 79.2 N and 59.4 N, with a theoretical 11.5 kgf at 1.0 MPa. The male rod thread (B code) carries a 6 mm rod, and the port is M5x0.8.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into cramped jigs and guarding where a full-length body cannot. In practice, plan on roughly 34 N of usable push at 0.5 MPa - about 3.5 kgf of real work, or a vertical lift of around 2.9 kg with a 2:1 margin. Fixed TPU bumpers sit at both ends, speed runs 30-500 mm/s, and pressure spans 0.15-1.0 MPa (22-145 psi). This model is discontinued: the current drop-in is the ACEJ12X20, but confirm the ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X20-10B |
| Bore size | Ø12 mm |
| Stroke | 20 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 ACEJ12X20-10B (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 ACPJ12X20-10B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×20 | 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 ACPJ12X20-10B Is Used
Micro jig clamping
The 10-20 mm trimmed extend stroke and 56.5 N push at 0.5 MPa suit small clamping fixtures on electronics assembly benches where every millimetre of body length counts.
Optical inspection gates
A 6 mm male-thread rod drives a small reject pusher under a camera station; without the -S magnet, add external proximity sensing or order the ACEJ12X20 with the optional magnet.
Lab sample indexing
Speed control from 30-500 mm/s and the short ISO 21287-class body let a compact indexer advance sample trays inside tightly spaced test-rack frames.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X20-10B with the ACEJ12X20-10B
Size up if 56.5 N at 0.5 MPa is marginal: the 16 mm bore delivers 100.5 N and the 20 mm bore 157.1 N at the same pressure. Size down to nothing smaller - 12 mm is the smallest bore in the family. The stop screw only shortens the extend stroke; it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. This unit has no magnet because the -S code was not ordered; if you need CMSE or DMSE switches, order a variant with the optional -S magnet or move to the ACEJ12X20, the current-production replacement in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X20-10B
- ✓ 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 ACPJ12X20-10B 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; theoretical maximum is 11.5 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: an external stop screw shortens the 20 mm extend stroke to any setting from 10 to 20 mm. It cannot lengthen the stroke past 20 mm, and the stop is not a load-holding brake - on air loss the piston still drifts. Fixed TPU bumpers decelerate at both ends.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ12X20 (swap the P for an E), an ISO 21287 compact cylinder in the same 12 mm bore, 20 mm stroke and force class. Because the ACP is DIN-standard rather than ISO 21287, confirm the mounting dimensions against your fixture before swapping. FA/FB flange and LB foot mountings carry over in the ACE family.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X20-10B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X20-10B replacement — usually within 7-8 hours.