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Job Description:

  • 1) Sets up and operates battery of ball-truing machines to grind bowling balls spherically to size and smooth them preparatory to finishing and polishing: Installs conical grinding rings on opposing spindles and adjusts clearances and angle of cut, using wrenches and gauges.

  • 2) Places rough cast ball on holding pad between grinding rings and turns valve to start cooling water to flow over ball.

  • 3) Starts machine and moves dial pointer to preset running time cycle on each quadrant of ball.

  • 4) Removes ball from holding pad and gauges it with ring or calipers and rule to ensure specified size tolerances.

  • 5) May mark imperfections on ball to be drilled and plugged, using crayon.




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End Of Job Description for: "BALL-TRUING-MACHINE OPERATOR"
DOT:   690.682-014

Job Number: 555