Eliminating lubricants can improve machine performance as many greased and oiled bearings fail prematurely due to inadequate lubrication.

Reasons for inadequate lubrication may include:

• Lack of regular maintenance

• Use of incorrect lubricant or topping up with an incompatible lubricant

• Use of greases or oils with inadequate viscosity, allowing metal-to-metal contact between the shaft and the bearing, and resulting in premature wear

LUBRICATION SYSTEMS ALSO ADD COSTS BY:

• Machining of grease paths or oil ways in the shaft or housing

• Purchase of lubricants

• Reduced operating efficiency due to machine downtime during maintenance periods

• Additional sealing to retain the lubricant

• Recycling of the machine

Other disadvantages include:

• Reduced energy efficiency from contact between the lubricant seals and shaft

• Risk of environmental pollution from re-greasing or oil changes in the field

GGB high performance dry bearings are capable of operating without grease or oil due to low friction fillers in the sliding layer. With a wear resistant sliding layer and a robust, high strength structure, GAR-MAX® and GGB-CBM® bimetal bearings offer high load, low and high temperature resistance and long service lives. PTFE inserts in GGB-DB™ cast bronze bearings are used for low wear and friction, graphite inserts are available for temperatures exceeding 250°C. Our thin-walled DP4® low-friction bushings offer over a wider range of loads and speeds exceptional performance.

Source:bearing-news