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← TechnologyWhich outcome occurs in hardened steel lathes due to prolonged use at increasingly high spindle speeds?
A)Excessive thermal expansion offset✓
B)Increased machine coolant viscosity
C)Workpiece material chemical breakdown
D)Reduced motor amperage requirement
💡 Explanation
Excessive thermal expansion offset occurs because prolonged high-speed use induces significant heat, and coefficient differences causes differential expansion via thermal conduction/convection. Therefore dimensional inaccuracy will be observed, rather than issues with coolant, material integrity or motor performance.
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