For a shaft measuring one inch in diameter with an RC6 sliding fit, what is the allowance in inches?

For a shaft measuring one inch in diameter with an RC6 sliding fit, what is the allowance in inches?

• A. 0.000
• B. - 0.001
• C. - 0.003
• D. - 0.005

Answer: (C)

To understand why the allowance for a shaft measuring one inch in diameter with an RC6 sliding fit is -0.003 inches, it's essential to delve into the concept of tolerances and fits. In engineering and machining, the allowance is the intentional distance built into the clearance or interference fit between two parts, such as a shaft and a hole. An RC6 sliding fit is categorized under tolerance classifications that are typically used for precision fitting applications, where the parts are to slide easily without excessive play. For a shaft with a diameter of one inch designated with an RC6 tolerance, the standards indicate that the upper limit is slightly greater than the nominal size, while the lower limit is less. This results in a negative allowance, which means the maximum material condition of the hole is somewhat larger than the minimum material condition of the shaft. The specific value of -0.003 inches comes from standardized tables that dictate the tolerances and allowances based on the fit type and size of the part. The negative allowance signifies that, while the shaft can fit into a specific range of hole diameters, there will be a slight tightening action as the radius and diameter dimensions push against each other. Therefore, in a practical sense, the shaft will need to be manufactured to be

To understand why the allowance for a shaft measuring one inch in diameter with an RC6 sliding fit is -0.003 inches, it's essential to delve into the concept of tolerances and fits.

In engineering and machining, the allowance is the intentional distance built into the clearance or interference fit between two parts, such as a shaft and a hole. An RC6 sliding fit is categorized under tolerance classifications that are typically used for precision fitting applications, where the parts are to slide easily without excessive play.

For a shaft with a diameter of one inch designated with an RC6 tolerance, the standards indicate that the upper limit is slightly greater than the nominal size, while the lower limit is less. This results in a negative allowance, which means the maximum material condition of the hole is somewhat larger than the minimum material condition of the shaft.

The specific value of -0.003 inches comes from standardized tables that dictate the tolerances and allowances based on the fit type and size of the part. The negative allowance signifies that, while the shaft can fit into a specific range of hole diameters, there will be a slight tightening action as the radius and diameter dimensions push against each other. Therefore, in a practical sense, the shaft will need to be manufactured to be