Model NO.: 3.969mm in G5 grade
Trademark: OEM
Specification: 3.175mm and above
Origin: Shandong, China
HS Code: 6909110000
Model NO.: 3.969mm in G5 grade
Trademark: OEM
Specification: 3.175mm and above
Origin: Shandong, China
HS Code: 6909110000

Ceramic Ball

Ceramic Ball have many advantages compared to Steel Balls. Bearing with ceramic balls can increase bearing performance and extend bearing life when used on high speed application or in a chemical, vacuum or high temperature environment.

XYB offers G5 Si3N4 Ceramic balls for use in loose ball wheel systems, such as Campagnolo or Shimano wheel hub.


Material Specifications

  Alumina Oxide Zirconia Oxide Silicon Nitride
Composition 99.5% Al2O3 / 0.5% other 97% ZrO2 / 3% MgO 87% Si3N4 / 13% other
Hardness 1700 Hv 80 - 84 Ra 1400 - 1700 Hv
Ultimate Tensile Strength 31,000 psi 60,000 psi -
Ultimate Compressive Strength >300,000 psi 285,000 psi >570,000 psi
Modulus of Elasticity 53 x106 psi 29 x106 psi 44-45 x106 psi
Maximum Working Temperature 1400ºC 2400ºC 1000ºC
Corrosion Resistance Inert except for hydruofluric and hot concentrated sulphuric acids. Inert to most substances, not recommended for environments of hydrochloric or strong alkaline solutions. Inert to most substances.
 

 

Good Features:

  • Si3N4 ball only 40% weight of steel ball.
  • Lower torque needed for pedal.
  • Lower thermal expansion, excellent mechanical property at high temperature.
  • Works in low lubrication condition.



 

Ceramic Ball

Ceramic Ball have many advantages compared to Steel Balls. Bearing with ceramic balls can increase bearing performance and extend bearing life when used on high speed application or in a chemical, vacuum or high temperature environment.

XYB offers G5 Si3N4 Ceramic balls for use in loose ball wheel systems, such as Campagnolo or Shimano wheel hub.


Material Specifications

  Alumina Oxide Zirconia Oxide Silicon Nitride
Composition 99.5% Al2O3 / 0.5% other 97% ZrO2 / 3% MgO 87% Si3N4 / 13% other
Hardness 1700 Hv 80 - 84 Ra 1400 - 1700 Hv
Ultimate Tensile Strength 31,000 psi 60,000 psi -
Ultimate Compressive Strength >300,000 psi 285,000 psi >570,000 psi
Modulus of Elasticity 53 x106 psi 29 x106 psi 44-45 x106 psi
Maximum Working Temperature 1400ºC 2400ºC 1000ºC
Corrosion Resistance Inert except for hydruofluric and hot concentrated sulphuric acids. Inert to most substances, not recommended for environments of hydrochloric or strong alkaline solutions. Inert to most substances.
 

 

Good Features:

  • Si3N4 ball only 40% weight of steel ball.
  • Lower torque needed for pedal.
  • Lower thermal expansion, excellent mechanical property at high temperature.
  • Works in low lubrication condition.



 

Automatic Sewing Machine

Sewing Machine,Automatic Sewing Machine,Industrial Sewing Machine

Richpeace Computer & Machinery Co., Ltd. , http://www.tjembroiderymachine.com