This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X30-20SB, 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 ACPJ12X30-20SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X30-20SB is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 30mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X30-20SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke30 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X30-20SB
- 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 ACPJ12X30-20SB
The ACPJ12X30-20SB is a double acting, adjustable-stroke compact cylinder in the discontinued ACPJ family, with a 12 mm bore and a 30 mm stroke that an external stop screw can trim by up to 20 mm, giving a usable extend range of 10-30 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim jigs and guarding where a full-length body will not fit.
The -S code on this model means the optional magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-of-stroke sensing; the B code gives a male rod thread on the 6 mm rod. Applying the usual 0.6 factor to the 56.5 N push leaves about 34 N of practical working force, which corresponds to lifting roughly 3 kg vertically - halve that to about 1.5 kg if you want a 2:1 margin. This model is discontinued: the current-production drop-in is the ACEJ12X30, so confirm the ISO 21287 mounting dimensions before swapping, since the ACPJ follows the older DIN-standard footprint.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-20SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-20SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X30-20SB |
| Bore size | Ø12 mm |
| Stroke | 30 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 ACEJ12X30-20SB (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 ACPJ12X30-20SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -20 | 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 ACPJ12X30-20SB Is Used
Small-part ejection from plastic molds
The 34 N practical push at 0.5 MPa is enough to tip light molded caps or clips off a core pin, and the 10-30 mm trimmed stroke matches shallow die pockets.
Position-verified test fixtures
With the fitted -S magnet driving CMSE or DMSE switches, an electronics bench fixture can confirm the 6 mm rod has fully reached the trimmed extend position before a probe cycles.
Label or stamp head on a packaging line
A 12 mm bore pressing a date-code stamp needs only a few newtons; the short body fits inside a compact print head carriage where an ISO 15552 profile cylinder would be twice as long.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X30-20SB with the ACEJ12X30-20SB
Size in both directions: if 56.5 N at 0.5 MPa is marginal for your load, step up to the 16 mm bore for 100.5 N; if the load is a few newtons, the same 12 mm bore in a shorter fixed-stroke ACP may be enough. Remember the stop screw only shortens the extend stroke within the 20 mm window - it never lengthens it past 30 mm and it is not a mid-stroke lock, so the rod will still drift if air is lost. Mounting is FA/FB flange or LB foot, and the fitted -S magnet accepts CMSE / DMSE switches. Order the ACEJ12X30 as the current replacement and verify the ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X30-20SB
- ✓ 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 ACPJ12X30-20SB FAQ
It 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. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa, 79.2 N push and 59.4 N pull; theoretical maximum 11.5 kgf at 1.0 MPa. The -20 stop screw trims the 30 mm extend stroke anywhere down to 10 mm, and a fixed TPU bumper decelerates the rod at both ends.
No - the ACPJ family is discontinued. The current-production drop-in is the ACEJ12X30 (swap the P for an E), which matches the same 12 mm bore, 30 mm stroke and force class in the ISO 21287 short-body format. Because the ACPJ follows the older DIN-standard footprint, confirm the ISO 21287 mounting dimensions before swapping. This unit carries the optional -S magnet, so CMSE / DMSE switches work on it; the ACEJ equivalent needs the -S code to include the magnet.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X30-20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X30-20SB replacement — usually within 7-8 hours.