This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X20-20SB, 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 ACPJ16X20-20SB
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB 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 ACEJ16X20-20SB (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 → ACEJ16X20-20SB
- 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 ACPJ16X20-20SB
The ACPJ16X20-20SB is a double acting, adjustable-stroke compact cylinder with a 16 mm bore and 20 mm stroke, and it is now discontinued - the current-production replacement is the ACEJ16X20. Air drives the piston both ways, while a stop screw trims the extend stroke anywhere within the ordered 20 mm window, giving a usable range of 0-20 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 ceiling of 20.5 kgf at 1.0 MPa.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. Because the -S magnet is fitted on this model, CMSE or DMSE reed and solid-state switches can be clamped straight onto the hard-anodized aluminium body. As a planning rule, keep real work to about 60 N (roughly 6 kg vertical lift with margin) rather than the full 100.5 N rating. A fixed TPU bumper sits at both ends, the S45C rod is hard-chrome plated, and the male rod thread (B code) suits knuckle accessories. Confirm ISO 21287 mounting dimensions before swapping to the ACEJ16X20.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X20-20SB |
| 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 ACEJ16X20-20SB (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 ACPJ16X20-20SB
| 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 ACPJ16X20-20SB Is Used
Fixture clamping on small CNC jigs
The 0-20 mm adjustable window lets a machinist dial in exact clamp travel on 16 mm-bore fixtures, with 100.5 N of push at 0.5 MPa holding light aluminium parts.
Position-verified ejector on packaging lines
With the fitted -S magnet, a CMSE switch confirms full extend before the carton pusher retracts, at cycle speeds up to 500 mm/s.
Compact press head for electronics assembly
The short body fits inside a benchtop press frame where an ISO 15552 profile cylinder would overhang, delivering 140.7 N at 0.7 MPa for connector seating.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X20-20SB with the ACEJ16X20-20SB
Size the bore by load: the 12 mm bore gives 56.5 N push at 0.5 MPa, while stepping up to 20 mm raises it to 157.1 N - pick 16 mm when your part weight sits between those bands. This unit carries the optional -S magnet and a male rod thread, so pair it with CMSE / DMSE switches and I or Y knuckles if position feedback and pivoting tooling are needed. Note the stop screw only shortens the extend stroke and drifts on air loss - it is not a mid-stroke lock. For new designs, order the ACEJ16X20 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X20-20SB
- ✓ 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 ACPJ16X20-20SB 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. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, and the port is M5x0.8 with an 8 mm rod.
A stop screw shortens the extend stroke by up to 20 mm within the ordered -20 window, so usable travel is 0-20 mm; it is a mechanical end stop, not a load-holding lock, so the rod still drifts if air is lost. The ACPJ family is discontinued - order the ACEJ16X20, the current ISO 21287 drop-in in the same bore, stroke and force class, and confirm its mounting dimensions before swapping.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X20-20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X20-20SB replacement — usually within 7-8 hours.