Sino-foreign joint venture High-tech enterprise, specializing in providing customers with stable and reliable bearing products and overall technical solutions.
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Insert- Bearings


  • Insert bearing steel

Z&R insert bearings outer and inner rings use Xingcheng Special Steel SKF 3 or Daye Steel’s vacuum degassed steel. This high-quality steel is subjected to constant temperature grinding by a high-precision grinder and super-finishing raceway mirror surface. The service life of ordinary steel is increased by more than 30%, which significantly reduces maintenance costs.



  • Heat treatment of insert bearing

All Z&R insert bearings adopt the Xbite bainite heat treatment process to provide excellent crack resistance, higher strength, surface hardness and dimensional stability for the inner and outer rings of the bearing; thereby making the inner and outer rings more wear-resistant and higher fatigue resistance Strength, extend its service life by more than 30% .

  • Enhanced internal knurled screw

Z&R insert bearings are locked with 3A grade nylon-coated enhanced inner knurled screws, which effectively prevent the screws from loosening under vibration conditions. High-frequency annealing treatment is performed in the area near the set screw holes to increase the tightening of the set screws. Effective, the tightening force of the set screw is increased by 20%, and a variety of set screw styles and screw hole locking angles of 62°, 90°, and 120° can be selected according to your requirements


  •  G10 grade Z4 photoelectric steel ball

Z&R's full range of insert bearing conventional products use G10 Z4 level seagull photoelectric steel balls. The high-quality steel balls effectively reduce the product vibration and noise value; at the same time, in order to meet different operating environments, it can also provide higher G5 grade or Japanese Tsubaki Nakajima brand steel balls For customers to choose .

  • Insert retainer

Z&R insert  bearing retainer adopts PA66 retainer and ion-nitriding silent retainer to meet the requirements of different use environments, respectively, to meet the high speed and high load requirements of insert bearing; the friction of PA66 retainer to steel ball is lower than metal retention The friction of the device on the steel ball greatly reduces the running noise.

  • Insert bearing grease

According to statistics, more than 36% of premature bearing failures are caused by poor lubrication. In fact, many low-speed application failures are caused by Run

Slippage is not caused by bearing fatigue. The lubrication performance of Z&R outer spherical bearings has been optimized and passed the life test, filled with grease that meets different occasions, temperatures, speeds and environments; the full range is equipped with Shell Gadus S2V100 2,

Shell Alvania RL3, ExxonMobil EM, Chevron SRI-2, KRYTOX240AC/GPL and other brand greases are available for customers to choose.


  • Insert bearing sealing system
R3 seal

SF seal

F seal

FJ seal

R5 seal

NPP seal

Z&R bearing

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