Chains and Sprockets Flashcards
What can chains do other than transmit power?
- reduce speed
- increase torque
- act as a conveyor
Velocity Ratio
- Gear Ratio
- Velocity Ratio
- # teeth driven / # teeth driver
- angular velocity driver / angular velocity driven
Torque Ratio
Torque driven / torque driver
Advantages of Chains
- no slippage
- long life self-life
- environmental conditions
- easy to repair
Disadvantages of Chains
- Noise
- Elongation
- Only one plain of engagement
Pin
Acts as the point of pivot about which the roller or bush engages with the sprocket
How do chains and belts work?
Teeth (cogs) of the driver sprocket engage with the chain (pulling the chain), the links of the chain then interact with the driven sprocket teeth (cogs) and moves it
Types of Chain
- Roller Chain
- Offset Link Chain
- Double Pitch Chain
- Silent Chain
- Chain with Attachments
Chain Nomenclature XXxxX-x: Section 1
Double Pitch Chain
Chain Nomenclature XXxxX-x: Section 2
Pitch of the Chain and Chain Type
Nomenclature: Type 0
Normal Chain
Nomenclature: Type 1
Light Weight
Nomenclature: Type 5
Rollerless Bushed Chain
Chain Nomenclature XXxxX-x: Section 3
H for Heavy Duty
Chain Nomenclature XXxxX-x: Section 4
Multi-Stranded Chain/ # of strands
Silent Chain Nomenclature SC XX XX: Section 1
SC stands for silent chain
Silent Chain Nomenclature SC XX XX: Section 2
Indicates Pitch
Silent Chain Nomenclature SC XX XX: Section 3
of link plates attached together
- XX * 1/4 = width of the chain
Type A Sprocket
Plain sprocket without a hub
Type B Sprocket
Has a hub on only one side
Type C Sprocket
Has a hub on both sides
Type D Sprocket
Sprocket has a detachable hub which is bolted onto the sprocket and can be split
Sprocket Nomenclature XxxXxxXxx: Section 1
Number of chains
Sprocket Nomenclature XxxXxxXxx: Section 2
Pitch of the sprocket
- # * 1/8
Sprocket Nomenclature XxxXxxXxx: Section 3
Type of Sprocket
- A, B, C, D
Sprocket Nomenclature XxxXxxXxx: Section 4
of teeth or cogs
Sprocket Nomenclature XxxXxxXxx: Section 5
Material
- H (Hardened teeth), SS (Stainless Steel)
Sprocket Nomenclature XxxXxxXxx: Section 6
Bore Size