The AirTAC Airtac SCJ80 Standard Cylinder SCJ80X80-40S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 40 mm range without swapping the cylinder. Ø80mm bore, 80mm nominal stroke, PT3/8 ports and adjustable end cushioning.
The SCJ80X80-40S delivers 2513 N of push force at 0.5 MPa in an 80 mm bore, single-rod double-acting body. Its rear-cap adjusting screw provides a 40 mm field-adjustable stroke-end range, letting you fine-tune the piston stop position without swapping the cylinder or adding external hard stops.
A built-in magnet is integrated into the piston, so CMSG/DMSG/EMSG reed and solid-state sensors clamp directly onto the tie-rod barrel for reliable end-of-stroke detection. The 25 mm diameter piston rod and PT3/8 ports handle standard industrial air supply, while the 28 mm air cushion decelerates the load smoothly at both ends.
| Model | Airtac SCJ80 Standard Cylinder SCJ80X80-40S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø80 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 40 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. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -40 | 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.
Dial in the exact stroke end during machine commissioning without machining custom stops. The 40 mm adjustment range lets technicians fine-tune the actuator position on the fly.
Quickly adapt stroke length for different product sizes on packaging or assembly lines. Operators adjust the rear screw to match new box heights or pallet dimensions in minutes.
Take up mechanical play or tooling wear over time by slightly extending the stroke end. The SCJ80X80-40S maintains consistent clamping or pressing depth without replacing the cylinder.
Step up to the 100 mm bore SCJ100 series if your application needs the 3927 N push force at 0.5 MPa; step down to the 63 mm bore for a more compact 1559 N. This SCJ model is the right choice when commissioning or format changes demand a variable stroke end—if the stroke is fixed, the standard SC80 series without the adjust screw is a simpler, lower-cost alternative. For exact replacement, match an SCJ cylinder with an 80 mm bore, 80 mm nominal stroke, a 40 mm adjust range, PT ports, basic mounting, and the -S magnet option.
Adjustable-stroke checklist
At 0.5 MPa, the cylinder produces 2513 N pushing and 2268 N pulling (the pull force is lower because the 25 mm rod reduces the piston area on the return stroke). At the maximum operating pressure of 0.9 MPa, the push force reaches 4523 N.
Yes, if you need the 40 mm field-adjustable stroke end. The SCJ80X80-40S shares the same bore, rod diameter, and port size as an SC80, but the body length A(SCJ) is 239 mm—slightly longer than the fixed-stroke version to accommodate the adjusting screw mechanism. Ensure your mounting arrangement has clearance for the rear adjuster.
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