This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ12X120-100SB, 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 ACPJ12X120-100SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ12X120-100SB 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 ACEJ12X120-100SB (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 → ACEJ12X120-100SB
- 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 ACPJ12X120-100SB
Double acting and adjustable, the ACPJ12X120-100SB is a discontinued DIN-standard compact cylinder with a 12 mm bore and a 120 mm stroke trimmed by a 100 mm adjustment window. A stop screw shortens the extend stroke on site, giving a usable range of 20-120 mm; it cannot lengthen the stroke past the ordered 120 mm. At 0.5 MPa it pushes 56.5 N and pulls 42.4 N, rising to 79.2 N push at 0.7 MPa, with a theoretical maximum of 11.5 kgf at 1.0 MPa. The 120 mm stroke exceeds the 50 mm standard maximum for this bore, so it is a made-to-order build.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures where a full-length body will not fit. This -S version carries the optional magnet, so CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke sensing, and the B code gives a male rod thread. A fixed TPU bumper at each end absorbs end-of-travel impact but never locks or holds a load - on air loss the piston drifts. Note the family is discontinued: the current-production drop-in is ACEJ12X120, and buyers should confirm ISO 21287 mounting dimensions before swapping. As a rule of thumb, plan on about 34 N of real work at 0.5 MPa, which lifts roughly 1.7 kg vertically with a 2:1 margin.
Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ12X120-100SB |
| 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 ACEJ12X120-100SB (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 ACPJ12X120-100SB
| 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 ACPJ12X120-100SB Is Used
Small-part ejection from plastic molds
The 56.5 N push at 0.5 MPa is enough to kick light molded caps or bushings off a mold face, and the 20-120 mm adjustable range lets the setter dial the eject distance without changing cylinders.
Position-verified test fixtures
With the fitted -S magnet driving CMSE or DMSE switches, a bench-top electronics test jig can confirm the 6 mm rod has reached the trimmed extend position before the probe cycle starts.
Light clamping on compact assembly stations
About 34 N of usable work at 0.5 MPa suits holding small PCB brackets or connector housings during a screwdriving step, where the short body fits inside a tight gantry frame.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ12X120-100SB with the ACEJ12X120-100SB
Size both ways: if 56.5 N push at 0.5 MPa is more than the job needs, the smaller ACPJ10 class is lighter still; if the load approaches the 34 N working band, step up to the 16 mm bore, which delivers 100.5 N push at 0.5 MPa. The stop screw is a mechanical end stop for the extend stroke only - it is not a mid-stroke lock, so do not rely on it to hold a vertical load when air is lost. FA/FB flange and LB foot mountings bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Order ACEJ12X120 as the current replacement and verify ISO 21287 mounting dimensions before the swap.
Replacement checklist
- ✓ Current-production ACE → ACEJ12X120-100SB
- ✓ 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 ACPJ12X120-100SB 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 -100 code is a 100 mm adjustment window, so the stop screw can trim the 120 mm extend stroke anywhere down to 20 mm. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, port M5x0.8, rod 6 mm with male thread. The 120 mm stroke is a made-to-order build above the 50 mm standard maximum for this bore.
The short-body build saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow jigs and guards. It is a hard-anodized aluminium body with an S45C hard-chrome rod and fixed TPU bumpers at both ends. The ACPJ family is discontinued; the current-production drop-in is ACEJ12X120 in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ12X120-100SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ12X120-100SB replacement — usually within 7-8 hours.