Samchully OJ-SC-190 Hard Top Jaws 7.5in 3-Jaw Lathe Chuck Set of 3
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This is a new set of three Samchully OJ-SC-190 hard (unhardened-style, serrated-base) top jaws designed for use with 7.5-inch (190 mm) diameter 3-jaw lathe chucks. Each jaw is individually numbered 1, 2, and 3 (stamped C097-1, C097-2, C097-3) for matched-set assembly, ensuring proper scroll engagement and concentricity when installed in the correct jaw slots. The jaws feature a fine-pitch serrated base (master jaw interface teeth clearly visible in photos) that engages the chuck's master jaws, and the top surface is ground flat and unfinished, allowing the machinist to bore or machine the gripping face to the required workpiece diameter for precision work-holding. Samchully is a South Korean manufacturer of precision chucks and workholding equipment; the OJ-SC series denotes outside-jaw (OJ) configuration for a scroll chuck (SC) with the 190 designation indicating the 190 mm (approximately 7.5 in) chuck body diameter. These jaws are sold as a complete matched set of three and are intended as replacement or spare top jaws for compatible Samchully 3-jaw scroll chucks of that size.
Product Specifications
| Compatible Chuck Diameter | 7.5 in (190 mm) |
| Number of Jaws in Set | 3 |
| Jaw Configuration | Top jaws (two-piece style, mounts on master jaws) |
| Jaw Type | Hard (unfinished, to be bored by user) |
| Jaw Orientation | Outside jaws (OJ) |
| Chuck Type Compatibility | 3-jaw scroll chuck (SC) |
| Base Interface | Fine-pitch serrated (T-nut / serrated master jaw engagement) |
| Jaw Numbering | Individually stamped 1, 2, 3 (C097-1, C097-2, C097-3) |
| Manufacturer | Samchully |
| Manufacturer Part Number | OJ-SC-190 |
| Condition | New |