This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X100-40, 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 ACPJ12X100-40
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X100-40 is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 100mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X100-40 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke100 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X100-40
- 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 ACPJ12X100-40
The ACPJ12X100-40 is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the ordered 100 mm stroke by up to 40 mm, giving a usable range of 60-100 mm. Bore 12 mm delivers 56.5 N push and 42.4 N pull at 0.5 MPa (79.2 N / 59.4 N at 0.7 MPa, 11.5 kgf theoretical max). The 100 mm stroke exceeds the 50 mm standard for this bore, so it is made to order. Note: this model is discontinued - the current-production drop-in is ACEJ12X100.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim fixtures and guarded cells. Plan for roughly 34 N (about 3.4 kgf) of real work at 0.5 MPa, or lift about 2.9 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers at both ends, M5x0.8 ports and a female M3x0.5 rod thread. No magnet is fitted; order the optional -S code for CMSE / DMSE switches. Speed 30-500 mm/s, pressure 0.15-1.0 MPa (22-145 psi).
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-40 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-40 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X100-40 |
| Bore size | Ø12 mm |
| Stroke | 100 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 ACEJ12X100-40 (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 ACPJ12X100-40
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×100 | 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 ACPJ12X100-40 Is Used
Small-part press fit
Seats bearings or bushings into plastic housings on an electronics assembly line, with the 60-100 mm window tuned per product variant.
Reject gate on a test bench
Pushes failed PCBs off a conveyor lane; with the optional -S magnet, CMSE or DMSE switches confirm extend and retract.
Lab sample indexer
Advances vials into a sampling station inside a compact enclosure where a full-length profile cylinder would not fit.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X100-40 with the ACEJ12X100-40
At 56.5 N push (0.5 MPa) this 12 mm bore suits light clamps and small part ejectors; step up to the 16 mm bore (100.5 N push) for roughly double the force, or down if you only need positioning. The adjuster is a mechanical end stop for the extend stroke only - it does not lock the piston, so the rod drifts if air is lost. FA/FB flange or LB foot mounting bolts to the ISO 21287 face. Because the ACPJ is discontinued, spec the ACEJ12X100 and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X100-40
- ✓ 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 ACPJ12X100-40 FAQ
At 0.5 MPa it pushes 56.5 N and pulls 42.4 N; at 0.7 MPa push rises to 79.2 N and pull to 59.4 N. Theoretical maximum is 11.5 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, with a 40 mm adjustment window on the 100 mm stroke (usable 60-100 mm).
An external stop screw shortens the extend stroke by up to 40 mm within the ordered window; it cannot lengthen the stroke past 100 mm and it is not a load-holding lock. The ACPJ12X100-40 is discontinued - order the ACEJ12X100, which matches the bore, stroke and force class, and confirm the ISO 21287 mounting dimensions before the swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X100-40
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X100-40 replacement — usually within 7-8 hours.