This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X35-40S, 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 ACPJ12X35-40S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X35-40S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 35mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X35-40S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke35 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X35-40S
- 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 ACPJ12X35-40S
Double acting and adjustable, the ACPJ12X35-40S is a discontinued DIN-standard compact cylinder with a 12 mm bore and 35 mm stroke. 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 peak of 11.5 kgf at 1.0 MPa. The hard-anodized aluminium body keeps the mounting length roughly 50% shorter than an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
The -40 code sets a 40 mm adjustment window: a stop screw trims the extend stroke anywhere from 0 to 35 mm on site, and fixed TPU bumpers pad both ends. Because the 12 mm bore pushes 56.5 N at 0.5 MPa, plan on roughly 34 N of usable work (about 3 kg lifted vertically with a 2:1 margin). The fitted -S magnet accepts CMSE / DMSE switches. This model is discontinued; the current-production drop-in is the ACEJ12X35 - confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X35-40S |
| Bore size | Ø12 mm |
| Stroke | 35 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 ACEJ12X35-40S (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 ACPJ12X35-40S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×35 | 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 ACPJ12X35-40S Is Used
Position-verified micro stops
The fitted -S magnet plus a CMSE switch confirms end-of-stroke on small assembly fixtures, while the 40 mm window lets technicians trim the 35 mm extend stroke without changing cylinders.
Compact ejection on SMD trays
With a body about 50% shorter than an ISO 15552 profile cylinder, the 12 mm bore slides under low-clearance guards to push 56.5 N at 0.5 MPa - enough to eject lightweight trays from pick-and-place nests.
Adjustable clamping of small brackets
A stop screw set anywhere in the 0-35 mm range clamps aluminium brackets in CNC secondary operations; fixed TPU bumpers soften both ends at speeds from 30 to 500 mm/s.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X35-40S with the ACEJ12X35-40S
Size against neighbours: the 16 mm bore gives 100.5 N push at 0.5 MPa if 56.5 N falls short, while stepping down is not possible below 12 mm in this family. The stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the rod still drifts if air is lost. FA/FB flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet works with CMSE / DMSE switches. Order the ACEJ12X35 as the current replacement and verify ISO 21287 mounting dimensions first.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X35-40S
- ✓ 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 ACPJ12X35-40S 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 -40 code is a 40 mm adjustment window: an external stop screw shortens the 35 mm extend stroke anywhere down to 0 mm. It is a mechanical end stop, not a load-holding lock - on air loss the piston still drifts. Operating range is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s.
No - the ACPJ12X35-40S is discontinued. The current-production replacement is the ACEJ12X35, an ISO 21287 compact cylinder in the same bore, stroke and force class. Because the ACP was DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. The replacement keeps the M5x0.8 port, 6 mm rod with M3x0.5 female thread, FA/FB flange and LB foot options, and the -S magnet code for CMSE / DMSE switches.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X35-40S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X35-40S replacement — usually within 7-8 hours.