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Spur Gear Sets |
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Gears operate in the same plane |
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Shafts are parallel |
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Less friction in gears means less heat buildup |
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Gear sets usually not totally enclosed |
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Must be periodically lubricated with grease |
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Worm Gear Sets |
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Gears operate in perpendicular planes |
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Shafts are perpendicular |
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More friction in gears means more heat buildup |
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Gear set are usually totally enclosed |
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Usually operate in oil bath |
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Spur gear operation: |
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3 input revolutions to turn drum one revolution |
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Requires higher torque on input shaft |
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Good for long distances and quick movement |
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Worm gear operation: |
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15 input revolutions to turn drum one revolution |
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Requires less torque on input |
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Good for short distances and controlled movement |
