This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X120-20S, 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 ACPJ16X120-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X120-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm 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 ACEJ16X120-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke120 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X120-20S
- 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 ACPJ16X120-20S
The ACPJ16X120-20S is a double acting compact cylinder with an adjustable extend stroke: a stop screw trims the 120 mm stroke by up to 20 mm, giving a usable range of 100-120 mm. The 16 mm bore delivers 100.5 N push and 75.4 N pull at 0.5 MPa, rising to 140.7 N push at 0.7 MPa, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The 120 mm stroke exceeds the 75 mm maximum standard stroke for this bore, so it is a non-standard, made-to-order build.
Its short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and sliding guards. In practice, plan for roughly 60 N (about 6 kgf) of usable push at 0.5 MPa, which lifts about 5 kg vertically with a 2:1 margin. The -S code means the optional magnet is fitted on this model, so CMSE or DMSE switches can be mounted directly. Note: this model is discontinued; the current-production replacement is ACEJ16X120 - confirm ISO 21287 mounting dimensions before swapping, since the ACP is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X120-20S |
| Bore size | Ø16 mm |
| Stroke | 120 mm |
| Acting type | Double acting, double rod, adjustable stroke |
| Port size | M5×0.8 |
| Rod thread | M4×0.7 |
| 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 75 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ACEJ16X120-20S (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 (Ø16mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 75 N |
| 0.7 MPa | 106 N |
| Max (@1.0 MPa) | 15 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 ACPJ16X120-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -20 | 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 ACPJ16X120-20S Is Used
Carton ejector on a packing line
The 100.5 N push at 0.5 MPa slides small cartons off a conveyor lane, and the 100-120 mm adjustable range lets the operator tune the eject position without re-piping.
Position-verified clamp in an assembly jig
With the fitted -S magnet, CMSE or DMSE switches confirm full clamp at each end of the 120 mm stroke, feeding a PLC interlock on a small-part fixture.
Divert gate on a sorting conveyor
About 5 kg of vertical lift equivalent at a 2:1 margin suits a lightweight gate flap, and the compact body fits the narrow frame under the belt.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X120-20S with the ACEJ16X120-20S
Size between bores: the 12 mm bore pushes 56.5 N at 0.5 MPa, while the 20 mm bore reaches 157.1 N - choose 16 mm when 100.5 N push and 75.4 N pull cover the job with margin. The stop screw only shortens the extend stroke; it is not a mid-stroke lock, so on air loss the piston still drifts and an external stop is needed for load holding. FA/FB flange and LB foot mountings bolt to the standard face, and I/Y rod knuckles suit the M4x0.7 female rod thread. For new designs, order the ACEJ16X120 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X120-20S
- ✓ 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 ACPJ16X120-20S FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa it pushes 140.7 N and pulls 105.6 N; theoretical maximum is 20.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window, so the 120 mm extend stroke can be trimmed anywhere in a 100-120 mm range. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), 30-500 mm/s, with a fixed TPU bumper at both ends. The 120 mm stroke is a made-to-order, non-standard build for this bore.
The short ISO 21287-class aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with M5x0.8 ports and an 8 mm hard-chrome rod. Because this model carries the -S magnet option, CMSE or DMSE reed or solid-state switches mount along the body. The ACPJ family is discontinued; the current drop-in is ACEJ16X120 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 ACEJ16X120-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X120-20S replacement — usually within 7-8 hours.