This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X80-40S, 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 ACPJ12X80-40S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X80-40S 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 ACEJ12X80-40S (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 → ACEJ12X80-40S
- 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 ACPJ12X80-40S
This compact cylinder works double acting: air both extends and retracts the 6 mm rod. The -40 code adds a 40 mm adjustment window, so a stop screw trims the extend stroke anywhere in a 40-80 mm range on site. At 0.5 MPa the bore 12 body pushes 56.5 N and pulls 42.4 N, enough for light clamping and small-part ejection. Note that the 80 mm stroke is longer than the 50 mm maximum standard stroke for bore 12, so this unit is a made-to-order build.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in slim fixtures and guarded cells. The magnet is the optional -S code and this model carries it, so CMSE or DMSE reed and solid-state switches can be fitted for end-of-stroke sensing. Plan on roughly 34 N of real work at 0.5 MPa (about 60% of the rated push), which lifts about 2.9 kg vertically with a 2:1 margin. This model is discontinued; the current drop-in is ACEJ12X80, and buyers should confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X80-40S |
| 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 ACEJ12X80-40S (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 ACPJ12X80-40S
| 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 ACPJ12X80-40S Is Used
Adjustable ejector on a small assembly station
The 40-80 mm trimmed extend stroke lets one cylinder eject parts of different heights from a nest without re-plumbing, with 56.5 N of push at 0.5 MPa for light plastic components.
Position-verified slide in a compact test rig
The fitted -S magnet and CMSE / DMSE switches confirm extend and retract inside a short body that saves about 50% of the length of an ISO 15552 profile cylinder.
Light hold-down on a PCB test pallet
About 34 N of usable force at 0.5 MPa (roughly 2.9 kg vertical with margin) is enough to clamp thin boards against a fixture, with the fixed TPU bumper softening both ends.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X80-40S with the ACEJ12X80-40S
Size both ways: if 56.5 N push at 0.5 MPa is marginal, step up to bore 16 for 100.5 N; if the load is a few grams, bore 12 is already the smallest in the family. The 40 mm window suits a fixture where product sizes vary and the extend stroke is trimmed rather than changed. The stop screw is a mechanical end stop only - it does not lock the piston mid-stroke, and on air loss the rod can drift, so add a separate clamp for load holding. FA/FB flange and LB foot mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. This model is discontinued; order ACEJ12X80 as the current replacement and verify ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X80-40S
- ✓ 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 ACPJ12X80-40S FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push is 79.2 N and pull is 59.4 N, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: a stop screw shortens the 80 mm extend stroke to any value from 40 to 80 mm. It is a mechanical end stop, not a mid-stroke lock. The 80 mm stroke is non-standard for bore 12 (max standard 50 mm), so it is made to order.
This unit carries the optional -S magnet, so CMSE or DMSE reed and solid-state switches mount directly on the body for end-of-stroke signalling. The ACPJ family is discontinued; the current-production drop-in is ACEJ12X80 in the same bore, stroke and force class. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions of the ACEJ before swapping, and check the M5x0.8 port and FA/FB or LB mounting match.
Related AirTAC ACE Cylinders
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Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X80-40S replacement — usually within 7-8 hours.