The AirTAC Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X600-50S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 50 mm range without swapping the cylinder. Ø63mm bore, 600mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ63X600-50S is a double-acting, single-rod pneumatic cylinder that puts stroke-end fine-tuning directly in your hands. With a 63 mm bore and a nominal 600 mm stroke, its rear-cap adjusting screw provides a 50 mm adjustable range, letting you dial in the exact stop position on the machine without swapping the cylinder or adding external hard stops. The built-in magnet (-S suffix) allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for reliable end-of-stroke or mid-stroke position feedback.
This model delivers a push force of 1559 N at 0.5 MPa and can reach 2805 N at the maximum operating pressure of 0.9 MPa, while the pull force is 1402 N at 0.5 MPa due to the 20 mm piston rod. The 28 mm air cushion at each end decelerates the load smoothly, and the PT1/4 port supplies ample flow for speeds of 30-800 mm/s. The body length A(SCJ) is 197 mm plus the stroke, making it a compact solution for applications where stroke length must be verified or adjusted during commissioning or after mechanical wear.
| Model | Airtac AIRTAC SCJ63 Standard Cylinder SCJ63X600-50S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø63 mm |
| Nominal stroke | 600 mm |
| Stroke adjustment | Up to 50 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. |
| ×600 | Nominal (maximum) stroke length in mm. |
| -50 | 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.
Fine-tune the end-stop position by up to 50 mm during machine commissioning. The rear adjusting screw lets technicians dial in the exact stroke without dismounting the cylinder, drastically cutting setup time on new automation lines.
Quickly adapt to different product sizes on packaging or sorting conveyors. The 50 mm adjustment range allows a single cylinder model to handle multiple formats, reducing the inventory of fixed-stroke cylinders needed for a flexible production line.
Compensate for mechanical wear in linkages or tooling over time. As pivot points wear and clearances increase, the adjustable stroke can be extended slightly to maintain precise end-of-travel positioning, extending the service life of the entire assembly.
Choose the SCJ63 when your application needs the force of a 63 mm bore—1559 N push at 0.5 MPa—with the flexibility to adjust the stroke end by up to 50 mm. If your force requirement is lower, the 50 mm bore SCJ50 series provides 982 N push at the same pressure in a lighter package; for higher force, step up to the 80 mm bore SCJ80 which delivers 2513 N push. The adjustable stroke is ideal for commissioning and format changes, but if your stroke is fixed and never needs field adjustment, the standard SC63 fixed-stroke cylinder is a more economical choice. For strokes of 600 mm, be mindful of side-loading on the 20 mm rod; if the load is not guided externally, consider adding an external guide rail or switching to a guided cylinder to prevent rod bending and premature seal wear. This SCJ63X600-50S is a direct replacement for an existing AirTAC SCJ63 of the same bore, nominal stroke, and 50 mm adjust range with a magnet, PT ports, and basic mounting.
Adjustable-stroke checklist
At 0.5 MPa, the push force is 1559 N and the pull force is 1402 N. The maximum push force at the 0.9 MPa operating limit is 2805 N. The pull force is lower because the 20 mm piston rod reduces the effective area on the return stroke.
A rear-cap adjusting screw sets the physical end-stop for the piston, shortening the stroke by up to 50 mm from the nominal 600 mm maximum. It is a mechanical stroke-end limiter, not a locking device. The cylinder will not hold a load if air pressure is lost; an external rod lock or pilot-operated check valve is required for static load holding.
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