Jiangsu, China
Business Type:
Manufacturer/Factory & Trading Company
Main Products:
Number of Employees:
Year of Establishment:
Management System Certification:
ISO 9001, ISO/TS 16949
OEM/ODM Service
Sample Available

Steel Ball, Stainless Steel Balls, Grinding Media manufacturer / supplier in China, offering 4mm 5mm Ss440c Bearing Stainless Steel Ball, AISI52100 G100 5mm Grinding Steel Ball for Slide Rail, RoHS 3/4′′ SUS304 Stainless Steel Balls for Sex Toy and so on.

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4mm 5mm Ss440c Bearing Stainless Steel Ball

Get Latest Price
Purchase Qty. / Reference FOB Price
20-1,999 kg US $3.66
2,000+ kg US $3.21
Port: Shanghai, China
Production Capacity: 160 Tons Per Month
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Customized: Customized
Certification: ISO, ISO9200;2008SGS
Standard Parts: Yes
Universal: Yes
Type: Steel Ball
Material: Stainless Steel

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Basic Info

Model NO.: 4mm 5mm
Product: 4mm 5mm Ss440c Bearing Stainless Steel Ball
Place of Origin: Jiangsu Province China
Diameter: 4mm 5mm
Precison: G10
Certificates: ISO SGS
Factory Location: Changzhou City Jiangsu Province
Factory Area: 13000 Square Meter
Employee: Around 100 People
History: Since 1989
Sample: by Free
Trademark: Saige
Transport Package: 10kg in 1 Export Carton
Specification: 200mm*200mm*100mm
Origin: Jiangsu China
HS Code: 84829100

Product Description

4mm 5mm Ss440c Bearing Stainless Steel Ball
4mm 5mm Ss440c Bearing Stainless Steel Ball
Stainless steel ball AISI  440C
1. MaterialAISI 440C/ SUS 440C/ DIN X105CrMo17
2. Size Range1.2-36mm
3. GradeG10
4. HardnessHRC 56-60
5. Characteristicvery good mechanical characteristic with a 
medium resistance to corrosion
6. MagneticNo
7. ApplicationValves,  special bearings, ball pens applications with moderate aggressive atmosphere
8. Chemical composition
 C%Si% Mn%Mo%Cr% P%S% 
min.0.95 ------0.416.0 ------
max.1.20 1.00 1.00 0.8¥18.00.040 0.015 
9.PackingStandard: 10kg or 20kg per carton,or as customer required 
10.Conditioning dry or oiled
11.Delivery timeStock within a short time or 35 days.
4mm 5mm Ss440c Bearing Stainless Steel Ball1. Raw Material
2. Drawing--Drawn the wire rod to the required size, in closer tolerances so that it can be used in next step cold heading. 
3. Heading--Ball blanks are cold or hot headed from rolls of wire or bar stock depending on their size and the material.It cuts to length and the width a small percentage larger than the width of the finished ball.The wire or rod is then fed through a header.This cold forged process produces "slugs" at an incredibly high speed.These rough shaped balls have a ring around the middle.The next process is to remove this ring. 
4. Flashing--To remove the "ring" around the ball, the slugs are then flashed.The flashing gives the ball a rough finish. 
5. Heat Treatment--Heat treatment, where necessary, gives the balls the maximum possible hardness and the best technical characteristics that can be achieved with the materials used. 
6. Grinding--After the ball is heat treated, the ball is then ground to the approximate diameter of the finished ball.
7. Sorting--Sorting the right size ones, and the qualified steel balls are filtered.
8. Lapping--The lapping will be processed after the ball is ground to approximate size. This lapping process polishes the ball to the exact required size and it makes the ball shiny. 
9. Inspection--The balls need to be inspected by mechanically and visually after lapping process.The balls are measured through a fine tuned tapered roller. The workers will also do the visually checking before packing.

 About the package

1, Weight steel balls. Each platstic bag is about 10kg.
2, Put plastic bags into small carton.
3, Put small box into the mooden case
4, Each box has the label including the diameter, precision, material, quantity, lot no. And date.
5, Each moodec case have 80 boxes max.

4mm 5mm Ss440c Bearing Stainless Steel Ball


1.What's your MOQ?
Our company MOQ is 1pcs.

2.How can I place an order?
You can email us about your requirement.
Any inquiry will be replied in 24hours.

3.Could you accept OEM and customize?
YES, we can customize for you according to your samples or drawing.

4.Could you supply samples for free?
Yes, we san supply samples for free if customer afford the freight.
5.Does your factory have SGS?
Yes, we have SGS and ISO.

6.Are you factory or manufacturer?
Yes, our factory was built in 1989.

7.What time the guarantee of your bearing quality guarantee period?
One year! Customer need supply photos and send bearing back.

8.Could you supply door to door service?
Yes, by air express ( DHL, FEDEX, TNT, EMS, SF 7-10 days to your city).

Contact us
4mm 5mm Ss440c Bearing Stainless Steel Ball



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