(a)
The pitch diameter of the spur gear.

Answer to Problem 61A
The pitch diameter is 117 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The pitch diameter is 117 mm.
(b)
The circular pitch of the spur gear.

Answer to Problem 61A
The circular pitch is 20.4204 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The circular pitch is 20.4204 mm.
(c)
The outside diameter of the spur gear.

Answer to Problem 61A
The outside diameter is 130 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The outside diameter is 130 mm.
(d)
The addendum of the spur gear.

Answer to Problem 61A
The addendum is 6.5 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The addendum is 6.5 mm.
(e)
The working depth of the spur gear.

Answer to Problem 61A
The working depth is 13 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The working depth is 13 mm.
(f)
The tooth thickness of the spur gear.

Answer to Problem 61A
The thickness of the tooth is 10.21 mm.
Explanation of Solution
Given:
Module (m) = 6.5mm
Number of teeth = 18
Concept Used:
Calculation:
Conclusion:
The thickness of the tooth is 10.21 mm.
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Chapter 48 Solutions
EBK MATHEMATICS FOR MACHINE TECHNOLOGY
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