This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-40SB, 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 ACPJ12X80-40SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-40SB is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 80mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X80-40SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke80 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X80-40SB
- 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 ACPJ12X80-40SB
The ACPJ12X80-40SB is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 80 mm stroke by up to 40 mm, giving a usable range of 40-80 mm. This 12 mm bore unit delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa), with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 80 mm stroke exceeds the 50 mm standard maximum for bore 12, so it is a made-to-order stroke. Note: this model is discontinued; the current-production replacement is ACEJ12X80.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding where a full-length body will not fit. Because the -S magnet is fitted, CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke sensing. As a rule of thumb, plan on roughly 34 N (about 3 kg vertical lift with a 2:1 margin) of real work at 0.5 MPa rather than the full 56.5 N rating. The adjuster is a mechanical end stop only - on air loss the piston still drifts, so it never holds a load.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-40SB |
| Bore size | Ø12 mm |
| Stroke | 80 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 ACEJ12X80-40SB (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 | 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 ACPJ12X80-40SB
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×80 | 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 (double rod, adjustable stroke).
Where the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40SB Is Used
Small-parts ejection on assembly fixtures
The 40-80 mm adjustable window lets a jig builder dial in the exact eject stroke for connector or pin removal, with 56.5 N of push at 0.5 MPa enough for light plastic parts.
Position-verified clamping in test benches
With the fitted magnet driving CMSE or DMSE switches, a lab bench can confirm the clamp has reached its trimmed end position before a measurement cycle starts.
Compact press-fit of bushings
At 0.7 MPa the 79.2 N push seats small bushings or dowels in electronics housings, and the short body fits inside a benchtop press frame where a longer cylinder cannot.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40SB with the ACEJ12X80-40SB
Size both ways before committing: the 16 mm bore pushes 100.5 N at 0.5 MPa if 56.5 N is marginal, while the 12 mm bore keeps force and footprint minimal for light clamping. The male rod thread (B code) suits I/Y knuckles and external tooling; FA/FB flange and LB foot mountings bolt to the standard face. If you need position sensing, this -S version already carries the magnet for CMSE / DMSE switches. For new designs, order the ACEJ12X80 instead and confirm the ISO 21287 mounting dimensions, since the ACP is DIN-standard.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-40SB
- ✓ 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 ACPJ12X80-40SB FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa those rise to 79.2 N and 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 12 mm bore uses an M5x0.8 port, the 6 mm rod carries a male thread (B code), and the extend stroke is adjustable from 80 mm down to 40 mm via the stop screw. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a fixed TPU bumper at both ends. The 80 mm stroke is made to order, since the bore 12 standard maximum is 50 mm.
Order the ACEJ12X80, the current-production ISO 21287 replacement: swap the P for an E and you get the same bore, stroke and force class in a matching short body. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, because the ACPJ was built to a DIN-standard compact format. The ACEJ also accepts the same FA/FB flange and LB foot mountings and supports the optional -S magnet for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X80-40SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-40SB replacement — usually within 7-8 hours.