Hybrid spindle bearings HCB7007-C-T-P4S have bearing rings made from steel and in contrast to standard spindle bearings, rolling elements made from ceramic(Si3N4)
Specifications of spindle bearing HCB7007-C-T-P4S
| Tolerance: H12 | ||
| Tolerance: h12 | ||
| Contact angle | ||
| ≈ Mass | ||
| Basic dynamic load rating, radial | ||
| Basic static load rating, radial | ||
| Fatigue limit load, radial | ||
| Limiting speed for grease lubrication | ||
| The limiting speeds are based on elastically preloaded single bearings. | ||
| Limiting speed for minimal quantity oil lubrication |
Code analyse of hybrid spindle bearing HCB7007-C-T-P4S
HCB-hybrid standard, ceramic balls
C-15°
T-laminated fabric cage, guidance on outer ring
P4S-Better than P4 to DIN 620
The advantage of hybrid spindle bearings HCB7007-C-T-P4S
Rolling bearings made from steel tend to undergo adhesive wear at the rolling contact in conditions of poor lubrication. Metallic contact leads, particularly under high contact pressure at the rolling contact, to cold bonding at the surface, result in wear. Due to the favourable tribological characteristics of the steel/ceramic combination places significantly less strain on the lubricants.
In comparison with a steel/steel combination, the steel/ceramic combinnation places significantly less strain on the lubricant, since the contact epplipses are smaller in hybrid bearings. As a result, there is less shearing of the lubricant. At the same time, there is less thermal strain in comparison with bearings made completely from steel.
Hybrid spindle bearings HCB7007-C-T-P4S achieve very high speeds, have lower friction and heat generation, a longer operating life, place less strain on the lubricant and are insensitive to lubricant starvation.
Though the use of hybrid bearings HCB7007-C-T-P4S, the operating limits of bearings with grease lubrication have been shifted to significantly higher speed ranges. This results in considerable savings on overall machine system costs.
For more ceramic hybrid spindle bearings, freely get in touch with Mr Gavin Chu for details.(gavinchu@sunrises-group.com)
