This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X70-20, 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 ACPJ16X70-20
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X70-20 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 ACEJ16X70-20 (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 → ACEJ16X70-20
- 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 ACPJ16X70-20
The ACPJ16X70-20 is a double acting compact cylinder with an adjustable stroke: a stop screw trims the 70 mm extend stroke by up to 20 mm on site, giving a usable range of 50-70 mm.
The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into slim jigs and guarding where a full-length body will not fit. A hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and the rod ends in a female M4x0.7 thread with an M5x0.8 port. Note: this model is discontinued - the current-production replacement is the ACEJ16X70, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X70-20 |
| 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 ACEJ16X70-20 (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 ACPJ16X70-20
| 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 ACPJ16X70-20 Is Used
Compact clamp in an electronics fixture
The short body, about 50% shorter than an ISO 15552 profile cylinder, fits between fixture walls, and the 60 N usable force holds small PCB carriers securely.
Gate pusher on a packaging line
At 30-500 mm/s the rod deflects lightweight cartons or triggers a divert gate, and the female M4x0.7 rod thread accepts standard knuckle brackets.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-20 with the ACEJ16X70-20
The 70 mm stroke is within the 75 mm standard range for this bore. The adjuster is a mechanical end stop for the extend stroke only - it does not hold a load if air is lost. If you need position sensing, order the -S variant with the optional magnet for CMSE / DMSE switches; this version has no magnet. FA/FB flange and LB foot mounts bolt to the standard face. For new builds, specify the ACEJ16X70 instead.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X70-20
- ✓ 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 ACPJ16X70-20 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. The theoretical maximum is 20.5 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window, so the 70 mm extend stroke can be trimmed to any length between 50 and 70 mm with the stop screw. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
Order the ACEJ16X70, the current-production ISO 21287 replacement: swap the P for an E and you get the same 16 mm bore, 70 mm stroke and force class in a matching short body. Because the ACP is DIN-standard, confirm the ISO 21287 mounting dimensions before swapping. If you need sensors, choose the -S code so the optional magnet is fitted for CMSE / DMSE switches; the fixed TPU bumpers and FA/FB flange or LB foot mounting carry over.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X70-20
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X70-20 replacement — usually within 7-8 hours.