This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X20-20S, 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 ACPJ16X20-20S
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X20-20S is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 20mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X20-20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke20 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X20-20S
- 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 ACPJ16X20-20S
Double acting and adjustable, the ACPJ16X20-20S is a DIN-standard compact cylinder with a 16 mm bore and a 20 mm stroke trimmed by a 20 mm stop-screw window, so the extend stroke can be set anywhere from 0 to 20 mm on site. At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa those figures rise to 140.7 N and 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The hard-anodized aluminium body with an S45C hard-chrome rod keeps the short ISO 21287-class package, saving roughly 50% of the mounting length of an ISO 15552 profile cylinder.
Plan on about 60 N of usable push at 0.5 MPa, which lifts roughly 5 kg vertically with a 2:1 margin - enough for small clamps, gates and part ejectors. The -S code means the magnet is fitted, so CMSE / DMSE reed or solid-state switches can be mounted for end-of-stroke signals. Note that this model is discontinued: the current-production replacement is the ACEJ16X20, a drop-in in the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP series is DIN-standard.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20S Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20S |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X20-20S |
| Bore size | Ø16 mm |
| Stroke | 20 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 ACEJ16X20-20S (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 ACPJ16X20-20S
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 ACPJ16X20-20S Is Used
Bench-top press jig
The 100.5 N push at 0.5 MPa and 0-20 mm trim range suit light staking or marking on small electronics brackets where the stroke must be set exactly.
Reject gate on a packaging line
With the fitted magnet and CMSE / DMSE switches, the PLC confirms gate open and closed positions at up to 500 mm/s travel speed.
Fixture clamp in a tight CNC cell
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits inside guard panels and fixture plates a full-length cylinder cannot reach.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20S with the ACEJ16X20-20S
Size between bores: an ACPJ12 gives 56.5 N push at 0.5 MPa, while stepping up to an ACPJ20 raises it to 157.1 N - pick the 16 mm when your load sits between those. The stop screw only shortens the extend stroke; it is a mechanical end stop, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange and LB foot mountings plus I/Y rod knuckles bolt to the standard face, and the fitted -S magnet accepts CMSE / DMSE switches. Order the ACEJ16X20 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X20-20S
- ✓ 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 ACPJ16X20-20S FAQ
Push is 100.5 N and pull 75.4 N at 0.5 MPa; at 0.7 MPa push is 140.7 N and pull 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, fluid air filtered to 40 um, port M5x0.8, female rod thread M4x0.7, fixed TPU bumpers both ends. The model is discontinued; the ACEJ16X20 is the current replacement.
The -20 code is a 20 mm adjustment window: an external stop screw shortens the 20 mm extend stroke by up to 20 mm, giving a usable range of 0-20 mm set on site. It acts only as a mechanical end stop for extension - it never lengthens the stroke past 20 mm and does not hold a load if air pressure drops. The fixed TPU bumpers at both ends simply decelerate the piston at each end of travel.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X20-20S
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X20-20S replacement — usually within 7-8 hours.