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2-3n.docx
1. 1
Gear Box
Name: Muhammad Jawhar Anwar
Class: 4 Stage –A
Subject: Design Project
Department: Mechanical and
Mechatronics
Supervised by : DR. Buland
College of
Engineering
3. 3
Specifications Uni
ts
value
Power to be
delivered
Hp 27.6
Input speed rpm 1992
Output speed
Range ±3
rpm 103
Height in 24
Width x Length in 14 x 14
Gear and bearing
life
Hou
r
(s)
>13000
I/P and O/P shafts
extension
in 4
I/P and O/P shafts
orientation
In-line (reverted
gearbox)
Shock level Usually low and
occasional moderate
shocks
Chapter1
Speed, Torque, and Gear Ratios
• Calculation of the Number of Teeth for each gear
𝑒 =
𝜔5
𝜔2
𝑒 =
103
1992
=
1
19.4
𝑒 =
1
19.4
=
𝑁2
𝑁3
𝑁4
𝑁5
𝑁2
𝑁3
=
𝑁4
𝑁5
= √
1
19.4
=
1
4.4
` 𝑁𝑝 =
2𝑘
(1+2𝑚) sin2 𝜙
(𝑚 + √𝑚2 + (1 + 2𝑚)sin2 𝜙)