G5 Silicon Nitride Ceramic Ball φ0.8 - 25.4mm High Precision Solid Bearing Balls
This ceramic ball is a high grade silicon nitride ceramic ball with a very bright appearance and a high accuracy level for a wide range of uses, such as: full ceramic bearings, hybrid ceramic bearings, tools and gauges, valve seals, pumps, vans and more.
Compared with steel ball, the main advantages of silicon nitride ball are:
1, 59% lighter than steel balls, greatly reducing the bearing high-speed and accelerated operation of the groove of the centrifugal force, crushing and wear;
2, the modulus of elasticity is 44% larger than steel, which means that the amount of deformation in the force is greatly reduced than steel balls;
3, higher hardness than steel, HRC reaches 78;
4, the coefficient of friction is small;
5, the coefficient of thermal expansion is 1/4 of steel, can withstand drastic changes in temperature;
6, easy to obtain a high surface finish, Ra can reach 4 to 6 nanometres;
7, high temperature resistance: silicon nitride ceramic ball at a high temperature of 1050 ° C still has a high strength, hardness;
8, never rust, can work in oil-free lubrication conditions;
9, more resistant to chemical corrosion than steel;
10, no metal pollution;
11, non-magnetic;
12, electrically insulated.
13, no adhesive wear;
The combination of these excellent properties makes silicon nitride the first choice for high performance bearing rolling element materials.
●● Uses:
Silicon nitride ceramic balls can be used in a variety of bearings with extreme performance requirements: high-speed/ultra-high-speed bearings, high-precision bearings, vacuum bearings, high/low-temperature bearings, non-magnetic bearings, high-precision ball screws; they can also be used in chemical pumps, high-temperature pumps, metering pumps used as valve balls, travelling vanes, fixed vanes, measuring balls.
Silicon nitride ceramic balls are generally assembled into hybrid bearings, which can be used in high-tech industries such as aviation, national defence and other industries, and can also be widely used in other industries such as chemical industry, metallurgy, medical care, foodstuffs, oilfield, electronics and so on.
●●Features of our products: stable performance and good consistency.
●●Diameter specification: Ф0.4mm~Ф140mm.
●●Available grade: G5~G100.
●● Remarks: 1) Black silicon nitride balls are the main products, with a large stock to meet the requirement of delivery at any time.
This 3.175, 3.969, 4.762, 5.953, 6.35 are suitable for bicycle hubs, centre shafts, tower base repair parts modification.
Bicycle enthusiasts: shimano mt15 front and rear wheelset ball diameter is 4.763mm (20-22 grains) 6.35mm (18-20 grains)
HIMANO shimanoM525 front hub with ball diameter is: 4.763mm total 22 grains rear hub with ball diameter is: 6.35mm total 18 grains.
1:Accuracy G5 grade
2:The price is the price of one ball.
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