We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
3.969mm AISI304 stainless steel ball for shower bearing pulley
Austenitic stainless steel ball
Grade of ball:60 to 1000/ 60 to 1000
Size:2.381mm-12.7mm
Application
Jewelry, high-end cosmetics, medical equipment, bearings, pumps, valves, aerosol, dispenser sprayers, food stuff, paper, chemical, rubber, military industry, special bearings, household sprayers, perfume miniature pumps, medical application valves, aerospace, body jewelry lotion pumps,chemical pump,guide rail, toy accessories, hardware accessories, auto accessories and EPT corrosion resistance application.
Martensitic stainless steel ball
Grade of ball:10 to 1000
Hardness:HRC 56 to 60/ HRC 48-52
Size:2.381mm-25.4mm
Application
Precision bearings, anti-friction bearings, special valves, special bearings, special pumps, ballpoint pens, conveyor belts, food stuff, medical instruments, quick couplings, recirculating ball bearings, knotting devices, oil refinery devices, fasteners, locking mechanisms, lighters, components and so on.
Chemical composition
| Stainless steel ball | Steel Grade | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cr(%) | Mo(%) |
| Austenitic stainless stell ball |
AISI201 | 0.15 | 1.00max | 5.50~7.50max | 0.06max | 0.03max | 3.05-5.50 | 16~18 | —- |
| AISI304 | 0.07max | 1.00max | 2.00max | 0.045max | 0.03max | 8~10 | 17~19 | —- | |
| AISI304L | 0.03max | 1.00max | 2.00max | 0.045max | 0.03max | 8~10.5 | 16~18 | —- | |
| AISI316 | 0.08max | 1.00max | 2.00max | 0.035max | 0.03max | 10~14 | 16~18 | 2.0~3.0 | |
| AISI316L | 0.03max | 1.00max | 2.00max | 0.035max | 0.03max | 12~15 | 16~18 | 2.0~3.0 | |
| AISI665 | 0.08-0.1max | 0.3~0.5max | 13.5~13.9max | 0.04max | 0.02max | 0.7-0.8 | 12-12.3 | —- | |
| Martensitic stainless steel ball |
AISI440 | 0.90~1.00max | 0.80max | 0.8max | 0.035max | 0.03max | 0.6 max | 17~19 | —- |
| AISI440C | 0.95~1.10max | 0.80max | 0.8max | 0.035max | 0.03max | 0.60max | 16~18 | 0.40~0.70 | |
| AISI420 | 0.26~0.35 | 1.00max | 1.00max | 0.035max | 0.03max | 0.60max | 12~14 | 0.75max | |
| AISI420C | 0.36~0.45 | 0.60max | 0.80max | 0.035max | 0.03max | 0.60max | 12~14 | —- |
Production Process
1.Cold heading process
2.Flashing process
3.Heating treatment process
4.Grinding process
5.Initial grinding process
6.Lapping process
7.Eddy current tested by AVIKO
8.Optical testing
Inspection Machines
Profile roughness tester from England
Germany Zeiss cleanliness analysis system
Taylor roundness instrument from England
SKF waviness meter
Germany KB Vivtorinox hardness tester
Finland residual stress analysis
Oxygen nitrogen analyzer from USA
Germany Zeiss metallographic microscope
Steel ball single body vibration measuring instrument
NG Spectrometer spectrometer
Bearing life testing machine
EPT universal testin machine
We produce
| Item | Name | Material |
| 1 | Carbon steel ball (Low) | AISI1571,AISI1015,Q195,Q235 |
| 2 | Carbon steel ball (High) | C80,C82,C85 |
| 3 | Stainless steel ball(Austenitic) | AISI304/304L/316/316L/201/665 |
| 4 | Stainless steel ball(Martensitic) | AISI420/420C/440/440C |
| 5 | Chrome steel ball(Ferritic) | AISIE52100/100Cr6/Gcr15/SUJ-2 |
Packaging
1. Plastic bag+box+carton+wooden pallet
2. Plastic bag+carton+wooden pallet
3. Export cartons+steel drums+wooden pallets
We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed replacement parts contained herein are not sponsored, approved, or manufactured by the OEM.
