| Features |
- High Load Capacity
- Low Starting Torque by Low Pre-load
- Good Durability and Life by Low Pre-load
- Currently Most Common in Oil-Free Machine (2nd & 3rd Generation)
|
- Low Load Capacity
- High Starting Torque by High Pre-load
- Poor Durability and Lifeby High Pre-load
- Old-fashioned : 1960 ~ 1980 (1st Generation))
|