This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X70-20B, 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 ACPJ16X70-20B
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X70-20B is a double acting, double rod, adjustable stroke DIN-standard tight/compact air cylinder with a Ø16mm bore and 70mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ACEJ16X70-20B (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ16 mm
- Stroke70 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod, adjustable stroke
- Rod threadM4×0.7
- StatusDiscontinued → ACEJ16X70-20B
- 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 ACPJ16X70-20B
A double acting compact cylinder with an adjustable extend stroke, the ACPJ16X70-20B carries a 16 mm bore, a 70 mm stroke and a male-threaded 8 mm rod (the B code). Air feeds through M5x0.8 ports at 0.15-1.0 MPa (22-145 psi), and the stop screw trims the extend stroke by up to 20 mm, giving a usable 50-70 mm range. At 0.5 MPa it pushes 100.5 N, so plan for roughly 60 N of real work, which is about 6 kg of vertical lift with a sensible margin. The short ISO 21287-class body saves about 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.
This model is DISCONTINUED. The current-production replacement is ACEJ16X70, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping, since the ACP family was built to a DIN-standard footprint. Construction is a hard-anodized aluminium body with an S45C hard-chrome rod, fixed TPU bumpers at both ends, and speeds of 30-500 mm/s. Note that no magnet is fitted on this code (no S), so no CMSE or DMSE switch can be mounted; order the -S variant if sensing is needed.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20B Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20B |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X70-20B |
| Bore size | Ø16 mm |
| Stroke | 70 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 ACEJ16X70-20B (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 ACPJ16X70-20B
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×70 | 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 ACPJ16X70-20B Is Used
Small-parts ejection from CNC fixtures
The 100.5 N push at 0.5 MPa is enough to kick finished aluminium or brass parts off a locating pin, and the 50-70 mm adjustable range lets the setter dial in the exact eject travel without shimming.
Carton flap tuck on a packaging line
With a 70 mm stroke trimmed down as needed and 30-500 mm/s speed control, the cylinder folds top flaps on small e-commerce cartons inside tight machine frames that a longer body cannot enter.
Bench-top go/no-go test stations
A male-threaded 8 mm rod bolts straight to an I-type knuckle to press a probe onto PCB assemblies; note this code has no magnet, so add the -S option if CMSE or DMSE end-position sensing is required.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20B with the ACEJ16X70-20B
Size the bore to the load: at 0.5 MPa this 16 mm bore delivers 100.5 N push and 75.4 N pull; step down to a 12 mm bore (56.5 N push) for lighter clamping, or up to a 20 mm bore (157.1 N push) for heavier tooling. The 20 mm window shortens the extend stroke only - it never lengthens it past 70 mm - and the stop is a mechanical end stop, not a mid-stroke lock, so the piston can drift on air loss. Mounting uses FA/FB flanges or LB feet on the ISO 21287 face. This unit is discontinued; order ACEJ16X70 as the drop-in successor and verify mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X70-20B
- ✓ 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 ACPJ16X70-20B FAQ
At 0.5 MPa it pushes 100.5 N and pulls 75.4 N; at 0.7 MPa push rises to 140.7 N and pull to 105.6 N, with a theoretical maximum of 20.5 kgf at 1.0 MPa. The -20 code sets a 20 mm adjustment window: a stop screw shortens the 70 mm extend stroke to any value from 50 to 70 mm. It is a mechanical end stop only - it does not hold a load if air is lost. Operating range is 0.15-1.0 MPa (22-145 psi) with speeds of 30-500 mm/s.
No - the ACPJ family is discontinued. The current-production drop-in is ACEJ16X70, which keeps the same 16 mm bore, 70 mm stroke and force class in a short ISO 21287 body with FA/FB flange and LB foot options. Because the ACP was built to a DIN-standard footprint, confirm the ISO 21287 mounting dimensions before swapping. Also note the optional -S magnet is what enables CMSE / DMSE switch mounting; without it no sensor can be fitted.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X70-20B
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X70-20B replacement — usually within 7-8 hours.