0

850views

Gear Classification in detail

written 6.6 years ago by yashbeer ★ 11k

modified 4.1 years ago by krithikkm200 • 10

theory of machines

ADD COMMENT FOLLOW SHARE EDIT

1 Answer

0

0views

written 6.6 years ago by yashbeer ★ 11k

The various types of gears are shown in the figure below.

Parameter	Spur	Helical	Bevel	Worm
Transmission Ratio	1:1 to 6:1	2:1 to 10:1	1:1 to 6:1	5:1 to 75:1
Efficiency (%)	98	96	95	90
Cost	Only radial and tangential forces present, low cost	Axial thrust is present which increases cost	Costlier due to high capacity bearings required	Highly expensive due to gear materials
Efficiency	Highest efficiency than all gears	Less efficiency than spur gear due to axial motion	Moderate efficiency	Lowest efficiency as more sliding motion
Operation and noise	Noisy due to sudden engagement	Smoother and quite due to gradual engagement	Less noisy than spur gears	Operates silent and smoothly
Application	Sugar cane crusher	highly durable and are ideal for high load applications	Reactors, ice crusher	Automobile
Speed	Produce noise at high speed hence suitable at low speed	Work efficiently at high speed	Work at high speed	Work at high speed

ADD COMMENT SHARE EDIT