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[China]
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Address: 35 TangYan Road Van Metropolis, Xi'an, China.
Contact name:Eason Zhou
Xi'an machinery & engineering import & export co.,ltd. |
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44.43mm(1.7492126"), customized size, high accuracy steel balls for bearing
Introduction
GCr15 steel is a representative steel of high-carbon chromium bearing steel with good overall performance. After quenching and tempering, the hardness is high and uniform, and the wear resistance and contact fatigue resistance are high, good thermal workability. After spheroidizing annealing, although it has good workability, it is sensitive to the formation of white spots.
It can be used to manufacture various bearing rings with wall thickness ≤12mm and outer diameter ≤250mm; it is also suitable for rolling elements of various sizes, such as steel balls, tapered rollers, cylindrical rollers, spherical rollers, needle rollers, etc.; It can also be used to manufacture molds, precision measuring tools and other mechanical parts that require high wear resistance, high elastic limit and high contact fatigue strength.
Mainly used to manufacture steel balls, rollers and bushings on drive shafts of internal combustion engines, electric locomotives, machine tools, tractors, rolling equipment, drilling machines, railway vehicles and mining machinery.
Mechanical properties
1. The influence of quenching temperature. The normal quenching heating temperature of GCr15 steel is 830-860℃, and oil cooling is mostly used. The best quenching heating temperature is 840℃, and the hardness after quenching reaches 63-65HRC. Under actual production conditions, the quenching temperature used can be slightly different depending on the effective cross-sectional size of the mold and the quenching medium. Such as larger size or nitrate grade quenching mold, it is advisable to choose a higher quenching temperature (840-860℃) in order to improve the hardenability, obtain sufficient hardened layer depth and higher hardness; smaller size or use Oil-cooled molds generally choose a lower quenching temperature (830-850°C). Molds of the same specifications should be heated in a box furnace at a slightly higher temperature than that in a salt bath furnace.
2. The influence of tempering temperature. As the tempering temperature increases, the hardness after tempering decreases. After the tempering temperature exceeds 200℃, it will enter the first type of temper brittleness zone. Therefore, the tempering temperature of GCr15 steel is generally 160-180℃.
Why Choose Us:
1. Special types of balls supplied.
2. Small MOQ with competitive price.
3. Fast delivery based on quality guaranteed.
4. Small quantity of free samples could be provided
5. Normal have in stock within one week can be shipped.
Product Details
| Product Name | High Precision Chrome Steel Balls |
| Size range | Ø 44.35 mm – Ø 44.57 mm(GCr15/SUJ2/100Cr6/E52100) |
| Quality grades | G40 |
| Hardness | HRc61-67 |
| Application | The High Quality Chrome Steel Balls are mainly applied in Deep Groove Ball Bearing, Angular Contact Ball Bearings, Thrust Ball Bearings, Wheel Hub Bearings, Linear Bearings,wind turbine bearing, slewing ring bearing and also the Bearing. |
| Special properties | 1. High accuracy |
| 2. no defects of surface | |
| 3. high hardness | |
| 4. Can be produced according customer requirement | |
| 5. Can provide small and big size standard and non-standard steel ball. | |
| Service | can provide free samples for checked, quantity and quality assured |
| Lead time | Normal have in stock within one week can be shipped. |
| It will take about 20 to 30 days can be shipped out of stock or depending on the order q'ty. | |
| Package | Plastic bag+ cardon box+ wooden pallet. or according to buyers' requirement |
| Payment terms | A:100% |
| B: 30% T/T in advance .70% against copy of B/L | |
| C: 30% T/T in advance .70% against L/C at sight | |
| D: Western union |
