Specifications

1,Excellent wear and corrosion resistance.
2,High temperature resistant.
3,High strength and hardness
4,High precision,G1,G2

 

  

Advantage:

1.Manufacture silicon nitride ceramic from 1995.

2.The rollers are made by Europen silicon nitride powder.

3.Excellent  and stable quality.

4.All kinds of size you need.

Characteristics  of silicon nitride rollers:

Their characteristics are shown as follows:

1. High corrosion resistance, which means they can be also used in strong acid, strong alkali and seawater.

2. High temperature resistance. Si₃N₄ ceramic rollers remain the same strength and hardness even in 1100°C.

3. Electrical insulation, non-magnetic, they can also be used in magnetic field.

4. Si3N4 ceramic rollers have a low density of 3.26g/cm³. It is approximately 60% lighter than steel balls, which extremely decrease the centrifugal force on the groove, in order to effectively reduce the wear and tear.

5. High rigidity and strength. Compared with chrome steel, Si₃N₄ ceramic is twice higher in hardness and half higher in elastic modulus value.

6. The coefficient of thermal expansion of Si₃N₄ is nearly 25% of the chrome steel, which leads to a good thermal shock resistance.

7. The self-lubrication of Si₃N₄ ceramic roller bearings can help to solve the contamination and inconvenient caused by lubricator, it can also be used in vacuum and high temperature.

8. Low thermal conductivity.

 

 

 

SPECIFICATION OF SILICON NITRIDE ROLLERS :

 

Diameter and Roundness      Unit:μm
	Grade	Dia			Lot Dia Variation         VDWL Max	Roller Diameter Gauge Interval			Preferred Gauges			Cir Max
		From	To
	0	3	18		1	1			-10,…,-1  0  +1,…,+5			0.3
	0	18	30		1	1			-10,…,-1  0  +1,…,+5			0.4
	I	3	18		2	1			-10,…,-1  0  +1,…,+5			0.4
	I	18	30		2	1.5			-10.5,…,-1.5  0  +1.5,…,+6			0.5
	II	3	18		3	1			-10,…,-1  0  +1,…,+5			1.0
	II	18	30		3	1.5			-19.5,…,-1.5  0  +1.5,…,+6			1.5
	II	30	45		3	2			-20,…,-2  0  +3,…,+6			2.5
	Length      Unit:μm
	Grade	Length			Lot Length Variation         VLWL Max		Roller Length Gauge Interval			Preferred Gauges			SDw Max
		From	To
	0	3	26		6		6			-30,…,-6  0			3
	0	26	50		6		6			-30,…,-6  0			3
	I	3	26		10		6			-30,…,-6  0			5
	I	26	50		10		10			-40,…,-10  0			5
	II	3	26		14		6			-30,…,-6  0			6
	II	26	50		14		10			-40,…,-10  0			6
	II	50	80		14		12			-48,…,-12  0			6
	Surface Roughness    Unit:μm
	Grade			Rolling Surface Ra Max				End Face			Chamfer Angle
	0			0.1				0.125			1.25
	I			0.25				0.16			1.25
	II			0.16				0.25			2.5

 

 

 

Length-Diameter aspect ratio (L/D)  Unit:mm

 

Dia 3-5     L/D≤2

 

Dia 5-10    L/D≤3

Dia 10-45   L/D≤4

 

                                                                                                                                                                  

Application fields:

High precise ceramic bearings, high temperature bearings, vacuum bearings, nonmagnetic bearings, chemical pump, high temperature pump, ceramic valve ball, measure ball.

 

  

   Carton box,with vacuum package.

  

 Silicon nitride ceramics research and production began in the 1970s.It is the first unit in China. The company obtained more than twenty ministerial-research- achievement awards, and 18 patents in the nitride silicon ceramic field. Our technology and production strength are in the leading position in China. 

 

The company has advanced production including a HIP furnace and improved detection equipment and strictly follow the ISO9001 quality system.