Precision Steel Ball For Bearing E52100, 31.72mm 1.248819"

31.72mm(1.248819"), 31.63mm To 31.75mm, precision bearing Ball For Bearing, 52100

Introduction

High-carbon chromium bearing steel is a high-carbon alloy steel containing 1.40 to 1.65% chromium. Its characteristics are more uniform and stable structure after heat treatment, high hardness, good uniformity, good wear resistance, high contact fatigue strength, good dimensional stability and corrosion resistance after annealing, good cutting performance, and relatively cheap price. . This steel can meet the bearing requirements under normal working conditions.

High-carbon chromium bearing steel is widely used worldwide. The most commonly used types are GCr15 and GCr15SiMn, which account for about 80% of the total bearing steel in my country. The properties of the two steels are basically the same. However, because the hardenability of GCr15SiMn is better than that of GCr15, GCr15SiMn steel should be used for larger-sized bearing parts. High-carbon chromium bearing steel is widely used in the manufacture of rolling bearing rings and rolling parts.

GCr15 bearing steel is widely used in the manufacture of spindle bearings, railway bearings, engine bearings, machine tool bearings, mining machinery bearings, general machinery bearings, etc.

Solid Chrome Steel Balls

Well-Made

Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating to assure uniform hardness and proper microstructure for each steel ball.

High Hardness

Ball hardness is controlled within the 60-63 HRC range as measured on parallel flat surfaces.

Wide Applications

Bearing balls are used in automotive applications, for semi-precision bearings, and in commercial applications.

Weldability

Because this material has 1% carbon, it does not weld well. It can be resistance welded with difficulty. It can be soft soldered with a high tin solder using an acid flux. It can be silver soldered or brazed; but the heat will cause distortion of the ball and a loss of hardness. For light load applications, the ball can be attached with an adhesive such as epoxy. When adhesive bounding is used, an area on the ball should be roughed up by etching or abrasive blasting. The area should be thoroughly cleaned.

Glossary

Grade: The designation assigned, based upon a combination of dimensional accuracy and surface roughness.
Deviation from Spherical Form: Measurement of the lack of roundness from the ideal spherical form.
Lot Diameter Variation: Measured dimensional difference between the largest and smallest balls as produced in a group / heat.
Nominal Ball Diameter Tolerance: The measured minimum and maximum variation in diameter from the ideal dimension.
Maximum Surface Roughness: Largest measured Irregularities determined from an ideal smooth form.

The maximum measured irregularity determined from the ideal smooth form.