The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X275-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø63mm bore, 275mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X275-10S brings field-adjustable stroke control to a 63 mm bore double-acting cylinder, delivering 1559 N of push force at 0.5 MPa and up to 2805 N at the maximum 0.9 MPa operating pressure. The rear-cap screw provides a 10 mm adjustment range, letting you fine-tune the stroke end position during commissioning or format changes without removing the cylinder. A built-in magnet allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke sensing.
This single-rod cylinder uses a 20 mm diameter piston rod with an M16x1.5 thread and PT1/4 ports. The 28 mm air cushion at each end decelerates the piston smoothly, protecting the end caps during high-speed operation. The body length A(SCJ) is 197 mm, slightly longer than the fixed-stroke SC version due to the rear adjusting mechanism. Operating on 40 µm filtered air from 0.15 to 1.0 MPa, it handles temperatures from -20 to +70 °C with the standard TPU seal.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X275-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -10 | 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.
During machine setup, the 10 mm rear screw lets technicians dial in the exact stroke end for gripper closure or part ejection without swapping shims or hard stops.
In high-cycle clamping fixtures, the adjustable stroke end takes up pad wear over time, maintaining consistent clamp force without reprogramming the PLC or changing the cylinder.
When a packaging line switches between box sizes, the operator adjusts the stroke end to match the new pusher travel, reducing downtime compared to replacing a fixed-stroke cylinder.
Step up to the SCJ80 series for 2513 N push at 0.5 MPa if your load exceeds the 1559 N this 63 mm bore provides; step down to SCJ50 (982 N push) for lighter, more compact installations. If your application never needs stroke adjustment, the fixed-stroke SC63 cylinder is a simpler, slightly shorter alternative. For guided loads or high side-force scenarios, pair this cylinder with an external linear guide or consider a guided cylinder instead. The SCJ63X275-10S directly replaces another AirTAC SCJ63 with a 275 mm nominal stroke, 10 mm adjust range, PT ports, basic mounting, and the -S magnet option.
Adjustable-stroke checklist
At 0.5 MPa, push force is 1559 N and pull force is 1402 N (the pull force is lower because the 20 mm rod reduces the effective piston area on the return stroke). At 0.7 MPa, push rises to 2182 N, and at the maximum operating pressure of 0.9 MPa, push reaches 2805 N.
Yes, if you need up to 10 mm of stroke-end adjustability. The SCJ shares the same bore, rod, port, and mounting footprint as the SC series. Ensure the slightly longer body length A(SCJ) of 197 mm fits your space, and match the port thread (PT), magnet option (-S), and mounting style.
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