This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X120-100B, 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 ACPJ12X120-100B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X120-100B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø12mm bore and 120mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ12X120-100B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ12 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM3×0.5
- StatusDiscontinued → ACEJ12X120-100B
- 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 ACPJ12X120-100B
The ACPJ12X120-100B is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 120 mm stroke down within the ordered 100 mm window, giving a usable range of 20-120 mm. This 12 mm bore unit delivers 56.5 N push and 42.4 N pull at 0.5 MPa, rising to 79.2 N push at 0.7 MPa, with a theoretical ceiling of 11.5 kgf at 1.0 MPa. The 120 mm stroke is beyond the 50 mm standard maximum for bore 12, so it is a made-to-order build.
Its short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into cramped jigs and guard-mounted fixtures. In practice, plan on about 34 N (roughly 3.4 kgf) of real work at 0.5 MPa, which corresponds to lifting about 2.9 kg vertically with a 2:1 margin. Note that this unit is discontinued; the current-production replacement is the ACEJ12X120, so confirm ISO 21287 mounting dimensions before swapping. The rod end is male thread (B code), the ports are M5x0.8, and no magnet is fitted - the optional -S code is required if CMSE / DMSE switch sensing is ever needed.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X120-100B |
| Bore size | Ø12 mm |
| Stroke | 120 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 ACEJ12X120-100B (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 ACPJ12X120-100B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 12 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -100 | 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 ACPJ12X120-100B Is Used
Micro part ejection from press dies
The 56.5 N push at 0.5 MPa is enough to strip small stamped clips or pins off a die, and the 100 mm trim window lets one cylinder serve several die heights between 20 and 120 mm.
Lab sample pusher in compact analysers
A 12 mm bore sliding sample trays of about 2.9 kg or less vertically (with margin) fits the tight internal envelope, and the male-thread rod (B code) takes a custom probe tip directly.
Small carton flap tuck on packaging lines
Running at 30-500 mm/s, the 20-120 mm adjustable range folds flaps on narrow cartons where a full-length profile cylinder would not fit beside the conveyor guard.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100B with the ACEJ12X120-100B
At 12 mm bore this is the smallest force class in the family: 56.5 N push at 0.5 MPa. If your load needs more, step up to the 16 mm bore (100.5 N push at 0.5 MPa) or the 20 mm bore (157.1 N push at 0.5 MPa); if less force and a shorter body suffice, a fixed-stroke ACP may cover it, with ACEJ / ACE as the current equivalents. Remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the piston still drifts if air is lost. Mounting uses FA/FB flange or LB foot on the ISO 21287 face, and sensing requires the optional -S magnet ordered at purchase. This model is discontinued; order the ACEJ12X120 as the drop-in successor.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X120-100B
- ✓ 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 ACPJ12X120-100B 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; the theoretical maximum is 11.5 kgf at 1.0 MPa. For sizing, treat about 34 N as the usable force at 0.5 MPa, which is roughly a 2.9 kg vertical lift with a 2:1 margin. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The -100 code sets a 100 mm adjustment window: an external stop screw shortens the extend stroke anywhere between 20 and 120 mm, but it is a mechanical end stop only - it never holds a load if air is lost. This ACPJ is discontinued; the current-production replacement is the ACEJ12X120 (same bore, stroke and force class). Confirm the ISO 21287 mounting dimensions before swapping, since the ACP series is DIN-standard. The 120 mm stroke itself is made to order, as the bore 12 standard maximum is 50 mm.
Related AirTAC ACE Cylinders
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Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X120-100B replacement — usually within 7-8 hours.