Miniature Ball Bearings Steel

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
50MT m.t.
Supply Capability:
500000TONS/YEAR m.t./month

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Product Description:

Specifications of Miniature Ball Bearings Steel


1. Dimensional sizes: Thickness: 14~100mm.Length:3000~5800mm,Diameter :14-500mm

2.Chemical composition: C=0.96~1.05,Si=0.15~0.35,Mn=0.25~0.45,Cr=1.4~1.65,


3. Grade: SAE51200/ GCr15 / 100cr6

4. Heat Treatment:

Soft annealing: heat to 680-720°C, cool slowly.

Hardness after annealing: Max. 241 HB

Hardening: 820 - 850 °C

Normalizing temperature: 840-880°C

Tempering: 540-680°C


5. Surface requirements: Black, grinding, bright, polish

6. Payment terms: 20% deposit, balance against L/C at sight or T/T.


Usage & Applications of Miniature Ball Bearings Steel

Miniature ball bearings are machinery components, which comprise an outer ring, inner ring, balls, retainers, shields and snap rings. High quality through hardened bearing steel improves reliability. High grade balls have improved roundness and finish to reduce vibration and noise. Super finished raceways to reduce friction, vibration and noise resulting in increased bearing life and reduced maintenance cost. Proven seal solutions effectively retain lubricant and exclude contamination from moisture, dust, and dirt which extends bearing life and reduces maintenance cost. Premium grease reduces noise, vibration and meets high temperature application requirements which extend bearing life. Bearings available 100% noise tested on state-of the art equipment to meet Electric Motor OEM low noise expectations. Product tolerances exceed bearing industry standards to allow for global interchangeability.



Packaging & Delivery of Miniature Ball Bearings Steel

10 pieces in one plastic tube, 10 tubes in one paper box or as customer required

Delivery time: 20 days after order confirmed.

Samples Policy: please arrange the sample cost and freight or freight collected. We will reduce this part expense from the total value of our first order.




1. According to national standard (GB) for our products, if not, supply according to national standards (GB) or agreement.

2. We can not only provide electric furnace +LF+VD and electro-slag re-melting (ESR)steel forging materials, but also forging products of piece, bar, etc.

3. Our company is equipped with roll equipment and can provide our customers with roll billets or finished.

4. Please send us your detailed specifications when inquire. We will reply to you ASAP.





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REDMETAL,a well-known enterprise specializing in the production and sales of spring steel and bearing steel. Since the establishment of our company, we have been aimed to provide the customers with qualify and cheap product and the satisfatory service.

1. Manufacturer Overview

Location Jiangsu, China
Year Established 1990
Annual Output Value Above US$ 20 Million
Main Markets Mid East; Eastern Europe; North America
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Shanghai
Export Percentage 20% - 30%
No.of Employees in Trade Department 21-50 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 100,000 square meters
No. of Production Lines 1
Contract Manufacturing OEM Service Offered;
Product Price Range High; Average