The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X160-20S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 20 mm range without swapping the cylinder. Ø80mm bore, 160mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X160-20S is a double-acting, single-rod tie-rod cylinder that delivers 2513 N of push force at 0.5 MPa, making it a robust actuator for medium-to-heavy industrial tasks. Its defining feature is the rear-cap adjusting screw, which provides up to 20 mm of field-adjustable stroke-end reduction, allowing operators to fine-tune the stopping position without removing the cylinder from the machine.
This model is equipped with a built-in magnet, enabling direct mounting of CMSG/DMSG/EMSG sensors for reliable end-of-stroke detection. The 25 mm diameter piston rod, PT3/8 ports, and a 28 mm air cushion at each end ensure smooth deceleration. The SCJ body length for this 80 mm bore is 239 mm, making it a compact yet powerful solution for format changeovers and commissioning adjustments.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X160-20S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 160 mm |
| Stroke adjustment | Up to 20 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 28 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×160 | Nominal (maximum) stroke length in mm. |
| -20 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 20 mm adjust range lets technicians dial in the exact stroke end during machine installation, compensating for minor assembly tolerances without needing custom spacer blocks.
Quickly adapt the cylinder's end position when switching between product sizes on a packaging line, reducing downtime and eliminating the need for multiple fixed-stroke cylinders.
Over time, tooling or stops can wear. The rear adjusting screw allows for a simple stroke-end correction, maintaining precise operation without replacing the entire actuator.
Choose the SCJ80X160-20S when you need a 160 mm nominal stroke with the ability to shorten it by up to 20 mm in the field. If your force requirements are lower, stepping down to the 63 mm bore reduces push force to 1559 N at 0.5 MPa; for higher demands, the 100 mm bore provides 3927 N. For applications requiring a fixed, non-adjustable stroke, the standard SC80X160 is a simpler alternative. This SCJ is a direct replacement for any AirTAC SCJ80X160-20S with PT ports, a basic mount, and a magnet. For strokes of 300 mm or more, consider an external guide or a guided cylinder to protect the 25 mm rod from side-load bending.
Adjustable-stroke checklist
A screw in the rear cap limits the piston's return stroke. By turning this screw, you can reduce the effective stroke from the nominal 160 mm down by up to 20 mm. It adjusts the stroke end position only and does not change the cylinder's output force.
At the standard 0.5 MPa operating pressure, the push force is 2513 N and the pull force is 2268 N. The maximum push force at 0.9 MPa is 4523 N. The pull force is lower due to the area of the 25 mm piston rod.
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