上帝充通大￥ Shanghai Jiao Tong University Advantages of Different Transmissions3 Advantages of Belt Drives(high-speed,low-torque) 1.Electrical insulation provided because there is no metal-to- metal contact between driver and driven units. 2.Less noise than with a chain drive 3.Flat belts can be used for extremely long center distances where chain weight would be excessive 4.Flat belts can be used at extremely high-speeds where chain inertia (must be considered as influencing chain fit at sprocket and chain tension. 5.No lubrication required. 6.Shaft center distance variation and shaft alignment is much less critical than for gear drives or chain drives. 99 Advantages of Different Transmissions3 Advantages of Belt Drives(high-speed, low-torque) 1. Electrical insulation provided because there is no metal-to￾metal contact between driver and driven units. 2. Less noise than with a chain drive 3. Flat belts can be used for extremely long center distances where chain weight would be excessive 4. Flat belts can be used at extremely high-speeds where chain inertia（惯性） must be considered as influencing chain fit at sprocket and chain tension. 5. No lubrication required. 6. Shaft center distance variation and shaft alignment is much less critical than for gear drives or chain drives