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Product Description
ZYS 1/2" Inch (0.5") Precision Chrome Steel Bearing Balls G25 with hardened solid steel
GCr15 steel balls are one of the commonly used steel grades for bearing rolling elements and sleeve drawings. The bearing ball has excellent comprehensive performance, good cutting performance after annealing, high hardness and uniformity after quenching and tempering, high wear resistance and contact fatigue strength, and good thermal performance. GCr15 steel is the most used and produced in high carbon chromium bearing steel material and is widely used in the world.
ZGCr15 is electroslag dissolved steel, which has fewer impurities and better properties than GCr15.
Application: Suitable for machine tool spindle bearing, high-speed rolling mill bearing, machine tool bearing.
| ZGCr15 material chemical composition | |||||||||
| Steel grade | Carbon | Manganese | Silicon | Chromium | Nickel | Copper | Sulfur | Phosphorus | |
| ZGCR15 | 0.95/1.05 | 0.20/0.40 | 0.15/0.35 | 1.3/1.65 | ≤0.3 | ≤0.25 | ≤0.02 | ≤0.027 | |
| ZGCr15 material mechanical properties | |||||
| σb Mpa | σs Mpa | ψ | Annealing hardness HBW | Temper hardness HRC | |
| 649 | 353 | 48 | 207 | 62-66 | |
| ZGCr15 high carbon chrome steel ball specifications | |||||
| Nominal diameter of steel ball | Nominal diameter of steel ball | Nominal diameter of steel ball | |||
| mm | in | mm | in | mm | in |
| 0.5 | 0.6 | 0.794 | 1/32 | ||
| 0.8 | 1 | 1.588 | 1/16 | ||
| 2 | 2.381 | 3/32 | 2.5 | ||
| 2.778 | 7/64 | 3 | 3.175 | 1/8 | |
| 3.5 | 3.969 | 5/32 | 4 | ||
| 4.5 | 4.762 | 3/16 | 5 | ||
| 5.159 | 13/64 | 5.5 | 5.953 | 15/64 | |
| 6 | 6.35 | 1/4 | 6.5 | ||
| 6.747 | 17/64 | 7 | 7.144 | 9/32 | |
| 7.5 | 7.938 | 5/16 | 8 | ||
| 8.5 | 9 | 9.525 | 3/8 | ||
| 10 | 11.112 | 7/16 | 12 | ||
| 12.303 | 31/64 | 12.7 | 1/2 | 13.494 | 17/32 |
| 14.288 | 9/16 | 15.081 | 19/32 | 15.875 | 5/8 |
| 16.669 | 21/32 | 17.462 | 11/16 | 18.256 | 23/32 |
| 19.05 | 3/4 | 19.844 | 25/32 | 20.638 | 13/16 |
| 21.431 | 27/32 | 22.225 | 7/8 | 28.575 | 1 1/8 |
| 31.75 | 1 1/4 | ||||
ZYS Bearing ball workshop:
The finest quality chrome steel produced in accordance with the highest industry standards. These high precision G25 ball bearings are hot forged from bar stock. Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating to assure uniform hardness and proper microstructure for each Stainless steel ball. Throughout the manufacturing process, statistical process control assures tolerance accuracy, fine surface finish and consistent high quality. Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.
ZYS Glory
Top 200 most promising companies of China in Forbes
Top 500 in China Machinery Industry
Excellent Enterprise with China Well-know Trademark
High-performance Bearings Laboratory
State Quality Supervision and Testing Center for Bearing
ISO/TC4 China Secretariat
The Research Center for High-speed Precision Bearing Engineering in Machinery Industry
ZYS Quality assurance
ZYS bearing products
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We would like to and ready to do business with any company from all over the world. If you are interested in any of ZYS products, please don't hesitate to contact with us, we would like to give you ZYS best quality service any day any time !
Contact us
Address: No.1 Jilin Road, Luoyang City, Henan, Province, China.
Zip Code:471039