한국어
- Applicable Industries:Garment Shops
- Applicable Industries:Building Material Shops
- Applicable Industries:Manufacturing Plant
- Applicable Industries:Machinery Repair Shops
- Applicable Industries:Food & Beverage Factory
- Applicable Industries:Farms
- Applicable Industries:Construction works
- Applicable Industries:Energy & Mining
- Applicable Industries:Food & Beverage Shops
- Place of Origin:CN
- Material:Ceramic
- Brand Name:DKJL
- Model Number:Steel Ball
High precision g3 ceramic bearing balls
Silicon Nitride has the most versatile combination of mechanical, thermal, and electrical properties of any technical ceramic material. It is a high performance technical ceramic that is extremely hard and has exceptional thermal shock and impact resistance. It surpasses most metals high temperature capabilities and has a superior combination of creep and oxidation resistance and high strength.
Additionally, its low thermal conductivity and high wear resistance make it an excellent material that can withstand the toughest of conditions in the most demanding industrial applications. Silicon Nitride is an excellent choice when high-temperature and high-load abilities are needed.
Silicon nitride (Si3N4) nearly as light as silicon carbide (SiC), but their microstructure gives them excellent thermal shock resistance and their high fracture toughness makes them resistant to impacts and shocks.
ceramic bearing balls Characteristics and advantages
1) Density 3.25 g/cm3 (59% lower than steel)
2) Excellent wearability
3) Max working temperature up to +800°C
4) Low coefficient of thermal expansion
5) high hardness up to Hv 1400
6) Nonmagnetic
7) Electrical isolating
8) Self-lubricating
9) Excellenct corrosion resistance
10) Applicable for high speed bearings
ceramic bearing balls Application:
Si3N4 ball can be used in all bearings with special requirement: high speed bearing, high precision bearing; vacuum bearing; high/low temperature bearing, non-magnetic bearing, high precision ball screw; Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance.
ceramic bearing balls Technical Index
Item | Unit | Si3N4 | ZrO2 | Al2O3 99.5% | SiC | Bearing Steel |
Density | g/cm3 | 3.23 | 6.05 | 3.92 | 3.12 | 7.85 |
Poisson’s Ratio | / | 0.26 | 0.3 | 0.22 | 0.17 | 0.3 |
Hardness | MPa | 1500 | 1200 | 1650 | 2800 | 700 |
Flexural Strength(@R.T) | MPa | 720 | 950 | 310 | 390 | 520 |
Fracture Toughness, K | MPa·m1/2 | 6.2 | 10 | 4.2 | 3.9 | 25 |
Thermal Conductivity(@R.T) | W/m·k | 25 | 2 | 26 | 120 | 40 |
Electrical Resistivity(@R.T) | Ω·mm2/m | >1013 | >1015 | >1016 | >103 | 0.1-1 |
Max.Use temperature | °C | 1050 | 750 | 1750 | 1550 | 300 |
Corrosion Resistance | / | excellent | excellent | good | excellent | poor |
pictures of ceramic bearing balls
Package of ceramic bearing balls: By cartons or wooden boxes or according to customer's requirement.
We also received OEM service; the package can be designed according to your requirements.
Shipping of ceramic bearing balls: By vessel or by train from any Chinese port, Samples can be delivered by International express.
1. Timely response,
Timely response to your inquiry, multiple choice recommendations based on your demand, quickly respond mails and provide solutions.
2. Free sample
ceramic bearing balls Sample and trial order is accepted for the quality evaluation.
3. Strict quality control
Arrange production on time and control quality strictly.
4. Shorter delivery time.
Book the earliest vessel or plane to guarantee the delivery time.
5. Professional Services
Provide all the detailed news and pictures from order to delivery;
Offer relative export documents and original certificate if needed;
Warm and considerable after-sale service
DKJL refractories exporting company is one of the most professional suppliers of refractories in China.
Our main products are refractory and thermal insulation materials, heating elements, and industrial ceramics.
They are available in various sizes and shapes. Our products enjoy a good reputation for their excellent quality and service in domestic and international markets.
1. How can I get your prompt quotation for ceramic bearing balls?
We can give you reply with quotation quickly if you kindly send the inquiry with following factors of si3n4 ceramic balls: content of AL2O3, ball diameter, application and quantity.
2.What's the MOQ of the order?
No limit, we can offer the best suggestions and solutions according to your condition.
3. Which payment terms can you accept?
T/T,LC,Western Union,moneygram are available for us.
4. After an order is placed, when to deliver?
15-25days after confirming the order.
5. Does your company accept customization?
We accept OEM service.
6. How to solve the quality problems?
If the products don’t conform to customer’s samples or have quality problems, our company will be responsible for it.
7. What is the HS code?
The HS code is 69141000
8. Is there any cost for the sample?
We provide free sample but don’t bear the feight
9.How can I contact you?
