Xi'an machinery & engineering import & export co.,ltd.
| Payment Terms | L/C, T/T |
| Delivery Time | 20-30days |
| Packaging Details | Plastic bag+ cardon box+ wooden pallet |
| material | chrome steel, GCr15, SUJ2 |
| Grade | G28 |
| Hardness | HRc61 to HRc67 |
| surface | lapping, Bright, high polished,case hardened surface |
| application | Ball Bearing, mechanical equipment, grinding media |
| Standard | DIN, ASTM, AISI, JIS, AFN |
| feature | good roundness,good roughness, Anti-wear, Corrosion Resistance |
| free Sample | supply for you |
| Brand Name | OEM,ODM |
| Model Number | 31.87mm(1.254724") |
| Certification | SGS,ISO9001,IAF,CNAS |
| Place of Origin | china |
View Detail Information
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Product Specification
| Payment Terms | L/C, T/T | Delivery Time | 20-30days |
| Packaging Details | Plastic bag+ cardon box+ wooden pallet | material | chrome steel, GCr15, SUJ2 |
| Grade | G28 | Hardness | HRc61 to HRc67 |
| surface | lapping, Bright, high polished,case hardened surface | application | Ball Bearing, mechanical equipment, grinding media |
| Standard | DIN, ASTM, AISI, JIS, AFN | feature | good roundness,good roughness, Anti-wear, Corrosion Resistance |
| free Sample | supply for you | Brand Name | OEM,ODM |
| Model Number | 31.87mm(1.254724") | Certification | SGS,ISO9001,IAF,CNAS |
| Place of Origin | china | ||
| High Light | 31.83mm Precision Chrome Steel Ball ，31.79mm Precision Chrome Steel Ball ，G28 Precision Chrome Steel Ball | ||
31.87mm(1.254724"), 31.79mm, 31.81mm,31.83mm precision chrome steel Ball For Bearing, 52100
Introduction
Good overall performance, good cutting performance after spheroidizing annealing, high and uniform hardness after quenching and tempering, high wear resistance and contact fatigue strength, and good thermal processing performance. Contains more alloying elements and is cheaper. GCr15 steel is the most used and produced high carbon chromium bearing steel, and is widely used in the world. However, it has strong white spot sensitivity, poor welding performance, high and uniform hardness, and good wear resistance. Used to make small cross-section quenched and tempered parts with larger load and large normalized parts with less stress.
High requirements for smelting quality of bearing steel, and the content and distribution of sulfur, phosphorus and non-metallic inclusions need to be strictly controlled, because the content and distribution of non-metallic inclusions have a great impact on the life of bearing steel. The basic quality requirements for bearing steel are purity and uniform organization. Purity means that there are fewer impurity elements and non-metallic impurities, and the uniform structure means that the carbides in the steel should be fine and evenly distributed. The higher the amount of inclusions, the shorter of the life span. In order to improve the quality of smelting, electric furnace smelting and electroslag remelting have been used recently, and new processes such as vacuum smelting and vacuum consumable refining can also be used to improve the quality of bearing steel.
Steel balls are widely used in bearings, hardware, electronics, mechanical equipment, electric power, mining, metallurgy and other fields.In addition to making balls, bearing rings, etc., it is sometimes used to make tools such as dies and measuring tools.
Our products enjoy high evaluation and satisfaction among customers. Most importantly, we can customize products to meet the various needs of customers.
Production Process
1.Cold heading process
2.Flashing process
3.Heating treatment process
4.Hard grinding process
5.Initial grinding process
6.Lapping process(First lapping → Second lapping → Ultra lapping)
7.Eddy current tested by AVIKO
8.Cleaning
9.Appearance inspeciton
10.Cleaning and oil
11.Re-inspection
12.Packing
Applicable Industries
Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Farms, Restaurant, Home Use, Printing Shops, Construction works , Energy & Mining. aerospace industry, automotive industry, precision instruments, motorcycles, bicycles, bearings, medical equipment and food machinery and other fields.
High Precision Chrome steel balls
| Grade | Hardness | Material | Ball Diameter |
| G20 | HRc 62-67 | Gcr15(52100,100Cr6,SUJ2) | 5/8" (15.875mm) -- 1" (25.4mm) |
| G28 | HRc 61-67 | Gcr15(52100,100Cr6,SUJ2) | 1 1/8"(28.575mm) -- 1 3/8" (34.925mm) |
| G40 | HRc 61-67 | Gcr15(52100,100Cr6,SUJ2) | 1 1/2" (38.1mm) -- 2 1/6" 55mm |
| G40 | HRc 61-67 | Gcr15(52100,100Cr6,SUJ2) | (44.94mm - 45.06mm) |
| G40 | HRc 61-67 | Gcr15(52100,100Cr6,SUJ2) | (49.94mm - 50.06mm) |
| G40 | HRc 61-67 | GCr15SiMn,100CrSiMn6-4,SUJ3,52100 | (59.94mm- 60.06mm) |
| G40 or G60 | HRc 61-67 | GCr15SiMn,100CrSiMn6-4,SUJ3,52100 | (62.94mm - 63.06mm) |
| G60 or G100 | HRc 57-63 | GCr15SiMn,100CrSiMn6-4,SUJ3,52100 | 3" (76.2mm) |
| G100 | HRc 59-65 | GCr15SiMn,100CrSiMn6-4,SUJ3,52100 | 2 3/4" (69.85mm) -- 3 3/20" (80mm) |
| G100 | HRc 57-63 | GCr15SiMn,100CrSiMn6-4,SUJ3,52100 | 3 1/4" ( 82.55mm) |
High Precision bearing (chrome) steel ball
Company Details
Business Type:
Agent,Importer,Exporter,Trading Company
Year Established:
2006
Total Annual:
3000000-5000000
Employee Number:
1~20
Ecer Certification：
Verified Supplier
Established in 2006, Xi'an Machinery & Engineering Import & Export Co.,Ltd.（XMEC) is the successor to Shaanxi Marine and Engineering Import & Export Co., Ltd., which is specialized in importing & exporting mechanical and electrical products, complete equipment, various kinds of... Established in 2006, Xi'an Machinery & Engineering Import & Export Co.,Ltd.（XMEC) is the successor to Shaanxi Marine and Engineering Import & Export Co., Ltd., which is specialized in importing & exporting mechanical and electrical products, complete equipment, various kinds of...
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