The AirTAC Airtac SCJ63 Standard Cylinder SCJ63X110-75S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 75 mm range without swapping the cylinder. Ø63mm bore, 110mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X110-75S is a double-acting, single-rod pneumatic cylinder with a field-adjustable stroke, offering a nominal 110 mm maximum stroke that can be shortened by up to 75 mm via the rear-cap adjusting screw. With a 63 mm bore, it delivers a push force of 1559 N at 0.5 MPa, making it a strong candidate for medium-duty positioning tasks where the end-stop needs fine-tuning during commissioning or after tooling wear.
This model includes a built-in magnet (-S suffix), allowing direct mounting of CMSG/DMSG/EMSG reed or solid-state sensors on the tie-rod barrel for precise end-of-stroke detection. The piston rod is 20 mm in diameter with an M16x1.5 thread, and the body length (A dimension) is 197 mm, providing a compact yet robust package for integration into machine frames.
| Model | Airtac SCJ63 Standard Cylinder SCJ63X110-75S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 110 mm |
| Stroke adjustment | Up to 75 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. |
| ×110 | Nominal (maximum) stroke length in mm. |
| -75 | 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.
Engineers can fine-tune the 110 mm stroke by up to 75 mm during machine setup without swapping cylinders, rapidly dialing in the optimal actuator throw for new automation sequences.
In high-cycle fixturing, the adjustable screw can be periodically advanced to compensate for pad or tooling wear, maintaining consistent clamp force without reprogramming the machine.
The 75 mm adjustment range allows a single SCJ63 cylinder to handle multiple product sizes, letting operators quickly reset a pusher or gate's end-stop for different box or carton formats.
Select the SCJ63X110-75S when your application requires a 63 mm bore for its 1559 N push force at standard plant pressure, but you need the flexibility to dial in the exact stroke end position within a 75 mm window. If your force requirement is slightly lower, stepping down to a 40 mm bore (628 N push) saves space and air consumption; for higher demands, the 80 mm bore delivers 2513 N push. The adjustable stroke is ideal for process development, but once a stroke is permanently fixed, a standard SC fixed-stroke cylinder is a more economical choice.
For a direct replacement, match the 63 mm bore, 110 mm nominal stroke, 75 mm adjust range, PT port thread, basic mounting, and the integrated magnet. This SCJ cylinder uses a basic mount by default; for pivoting applications, the TC centre trunnion kit (F-SC63TC) can be ordered separately. For strokes over 300 mm, always assess side-loading on the 20 mm rod and consider adding an external guide rail to prevent bending.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The push force is greater because the single rod reduces the piston area on the return side. The maximum operating push force at 0.9 MPa is 2805 N.
A rear-cap screw mechanically limits the piston's stroke end, shortening the 110 mm nominal stroke by up to 75 mm. It is a physical end-stop, not a position lock. If air pressure is lost, the cylinder will not hold its position; an external rod brake or pilot-operated check valve is required for load holding.
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