This model is discontinued
AirTAC has phased out the ACP series. You can still order this code here: we ship the current replacement ACEJ16X70-50, 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 ACPJ16X70-50
The AirTAC ACPJ Adjustable Compact Cylinder ACPJ16X70-50 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 ACEJ16X70-50 (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 → ACEJ16X70-50
- 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 ACPJ16X70-50
A stop screw trims the 70 mm stroke by up to 50 mm, so one cylinder covers a 20-70 mm working range without changing parts. The short ISO 21287-class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight fixtures and guarding where a full-length body will not fit.
Note this model is discontinued: the current-production replacement is the ACEJ16X70, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping. FA/FB flange and LB foot mounts bolt straight on, and the optional -S magnet enables CMSE / DMSE switches; without -S there is no magnet.
Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50 Technical Specifications
| Model | Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50 |
|---|---|
| Series | ACPJ DIN compact cylinder (discontinued) |
| Replacement | ACEJ16X70-50 |
| 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 ACEJ16X70-50 (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 ACPJ16X70-50
| ACPJ | DIN compact cylinder (adjustable-stroke, discontinued). |
|---|---|
| 16 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -50 | 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 ACPJ16X70-50 Is Used
Position-checked press fit on PCB fixtures
Order the -S code to add CMSE / DMSE switches so a PLC confirms the rod reached the trimmed stop before the fixture indexes; without -S there is no magnet to sense.
Clamping lids on compact test fixtures
About 60 N of usable clamping force at 0.5 MPa holds light covers during leak or electrical testing, and the short body fits inside the guard envelope.
Replacing the Airtac ACPJ Adjustable Compact Cylinder ACPJ16X70-50 with the ACEJ16X70-50
Plan on about 60 N (roughly 6 kg vertical) of real work at 0.5 MPa rather than the full rating. The adjuster is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the piston still drifts if air is lost. FA/FB flange and LB foot mounting fit standard fixtures, the optional -S magnet pairs with CMSE / DMSE switches, and the ACEJ16X70 is the current direct successor.
Replacement checklist
- ✓ Current-production ACE → ACEJ16X70-50
- ✓ 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 ACPJ16X70-50 FAQ
The -50 code is a 50 mm adjustment window: a stop screw shortens the 70 mm extend stroke by up to 50 mm, giving a usable 20-70 mm range. It shortens the stroke only - it never extends past 70 mm.
It is a compact short-body cylinder with a hard-anodized aluminium body, S45C hard-chrome rod, M5x0.8 ports, a female M4x0.7 rod thread, fixed TPU bumpers at both ends and a speed range of 30-500 mm/s. The body saves about 50% of the mounting length of an ISO 15552 profile cylinder. The ACPJ family is discontinued, so order the ACEJ16X70 as the current direct and confirm the ISO 21287 mounting dimensions before the swap.
Related AirTAC ACE Cylinders
Request a Quote for the ACEJ16X70-50
Send us the quantity and destination. We confirm price, stock and lead time on the ACEJ16X70-50 replacement — usually within 7-8 hours.