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Front wheel hub bearing 6-256907АЕК12L19


Booklet ""Front wheel hub bearing HARP-AUTO "" 
Presentation ""Front wheel hub bearing""
Installation manual of the front wheel hub bearing 6-256907АЕК12L19


АО "JSC HARP" is one of the main suppliers of bearing products to the conveyor of JSC ZAZ.». 

Among the latest developments there is an upgrading of the front wheel hub bearing 6-256907АЕК12L19 for automobiles LANOS, SENS, Tavria, Slavuta, VAZ-2108, VAZ-2109, VAZ-21099, VAZ-2110, VAZ-2111, VAZ-2112 which is serially-supplied to the conveyor of the automobile plant since 2011. Also the upgraded hub bearing is successfully used in the manufacture of agricultural implements - disc harrows, cultivators - in maintenance-free bearing unit HARP-AGRO

Designation of the modernized bearing is 6-256907АЕК12L19. 

This bearing has significantly improved characteristics on durability and efficiency comparing with 6-256907АЕ1К1С17 earlier serially-produced and delivered to the conveyor of JSC ZAZ.  

Improved characteristics on durability and efficiency of the upgraded bearing 6-256907АЕК12L19 are achieved by means of:
• production of bearing rings from work billets obtained by hot forging;
• usage of lip type seals instead of ordinary rubber seals;
• usage of lubricant CHEVRON SRI GREASE NLG12, usage of lubricant BERUTOX 18EP FE (L20) is allowed instead of Litol-24. 

Implementation of these improvements increases durability of the bearing in two or more times, increases tightness of the bearing, secures the bearing against moisture and dirt. The cage design provides a good distribution of lubricant between working surfaces of the bearing parts. 

Usage of the upgraded hub bearing 6-256907АЕК12L19 allows:

  • to increase the durability of the bearing unit more than in 2 times; 
  • to reduce the level of vibration and noise; 
  • to increase the speed characteristics of the product; 
  • to reduce the cost for maintenance.

Difference between HARP hub bearing and analogues of other manufacturers 

HARP hub bearing Analogues of other manufacturers
Usage of work pieces obtained by hot forging Usage of work pieces obtained from pipe
Usage of double-edge lip type seal .
with a spring (K12). (In the future transition to the sealing design with four leading edges K14)
Usage of ordinary seals.
Usage of a ball with diameter 10 mm, that allows to increase
гload capacity with an equal number of balls. 
Usage of a ball with diameter 9.525 mm.