4. How to Select Chains
3. Chain speed coefficient, Kv; sprocket tooth coefficient, Kc Adjust the transmission capability according to the chain speed and number of teeth in the small sprocket (Figure 4.6). The sprocket coefficient is labeled Kc . 4. Impact coefficient, K This coefficient (Figure 4.7) is based on the inertia ratio of the driving machine and driven machine (ratio of I , ratio of GD 2 ) and the amount of play in transmission equipment. When the inertia ratio is less than 0.2 or greater than 10, use the value of 0.2 or 10, respectively.
Sprocket teeth factor Kc
Speed factor Kv
Chain speed (m/min)
Small-Sprocket Teeth
Figure 4.6 Speed Factor (Kv) and Sprocket Factor (Kc)
Motor shaft converted inertia of load R =——————— Inertia of motor
Mill
Conveyor
Hoist work Hoist
gang roll
crane travel and shuttle
fly foil
Inertia ratio (R)
Figure 4.7 Shock Factor (K)
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