DBS drive uinits use high capacity planetary gearboxes - secondary speed reducers - to drive the main pinion gear on large drives and act as the main drive on the smaller DBS drives. These planetary gearboxes are efficient and have bearing lives in excess of 100,000 hours. Planetary gearboxes are more efficient and have a longer life than typical worm type pinion drive gearboxes, and have higher bearing capacity that cycloidal type reducers.
DBS pinion drive gearboxes have very heavy-duty bearings that support the drive shaft. These bearings can fully support a drive pinion without the need of a bearing below the pinion thus eliminating one common source of drive failure on competitors' products. These bearings can also fully support a small clarifier rake and drive shaft.
DBS pinion drive gearboxes are permanently lubricated and require no maintenance for 10 years.
The advantages of Secondary Speed reducer are:
- Spur gear planetary gearbox with a much higher efficiency and longer life than worm type gearboxes.
- High capacity bearings have L10 life in excess of 100,000 hours at full torque load.
- Gearbox does not require a bearing under a drive pinion resulting in superior reliability. Many competitors' gearboxes fail due to the failure of the lower pinion support bearing. Lower bearings are subject to contamination by debris and condensation (water) that sink to the lowest parts of the drive where the lower support bearing is located.
