686
LNB
6 mm
13 mm
3.5 mm
ZrO2; Si3N4
Ball Bearing
China
OEM; ODM
Negotiation
30
| Basic Information | ||
| Model | 686 (ZrO2) | 686 (Si3N4) |
| Brand | LNB | LNB |
| System of Measurement | Metric | Metric |
| Bearing Type | Ball Bearing | Ball Bearing |
| Load Direction | Radial | Radial |
| Construction | Single Row | Single Row |
| Temperature Range | -115° to 400 °C | -115° to 800 °C |
| Weight | 0.0015 kg | 0.0008 kg |
| Product Dimension | ||
| Bore Dia | 6 mm | 6 mm |
| Bore Dia Tolerance | -0.008mm to 0 | -0.008mm to 0 |
| Outer Dia | 13 mm | 13 mm |
| Outer Dia Tolerance | -0.008mm to 0 | -0.008mm to 0 |
| Width | 3.5 mm | 3.5 mm |
| Width Tolerance | -0.120mm to 0 | -0.120mm to 0 |
| Material | ||
| Ring Material | Zirconia | Silicon Nitride |
| Ball Material | Zirconia | Silicon Nitride |
| Cage Material | PTFE | PTFE |
| Basic Load Rating | ||
| Dynamic Radial Load | 0.275 kN | 0.231 kN |
| Static Radial Load | 0.106 kN | 0.088 kN |
In ceramic bearings, zirconia and silicon nitride are two common materials. They both perform well in harsh and high-precision-required environments, such as aerospace, the chemical industry, high-precision instruments, and other special fields. Both ZrO2 and Si3N4 material bearings have the advantages of bare high hardness, high strength, excellent corrosion resistance, high-temperature resistance, etc. However, there are also some differences in performance and application.
Zirconia (ZrO₂) is heavier than silicon nitride, it is an oxide ceramic with good toughness and wear resistance. The high density of ZrO2 is about 6.0 g/cm³.
Zirconia bearings are good at corrosion resistance and thermal conductivity (easy to match with metal). And they have better fracture toughness than Si3N4 materials, so ZrO2 is suitable for withstanding greater mechanical stress.
Silicon nitride (Si₃N₄) has a lower density and is lighter than zirconia materials. The density is about 3.2 g/cm³ . As a non-oxide ceramic, silicon nitride is known for its ultra-high hardness and lightweight.
Silicon nitride is particularly suitable for high-temperature and high-speed operation environments. Though it is slightly less resistant to corrosion than zirconium oxide, it has extremely high hardness and strength, excellent compressive resistance, etc.
Better toughness: Among ceramic materials, zirconia has better toughness. Although under impact or high stress, it can remain stable and is not easy to break.
Low thermal conductivity: Because zirconia bearings have lower thermal conductivity, it is suitable for use in occasions requiring heat insulation.
Good wear resistance: Although zirconia materials have a slightly lower hardness than silicon nitride, their wear resistance is still excellent, and they can suit long-term operation.
Ultra-high hardness: Close to the diamond's hardness, The hardness of silicon nitride is very high. This property greatly improves silicon nitride bearings' wear resistance and makes them widely used in high-precision operation under extreme conditions.
Low density, lightweight:
Silicon nitride bearings can help machinery to reduce the total weight and improve their operating efficiency due to the material being light in weight.
High temperature stability: Silicon nitride bearings can maintain stable mechanical properties under high temperature and high-speed conditions. Just because it has very good high-temperature performance.
Zirconia bearings are often used in medical equipment, food processing machinery, the chemical industry, etc. environments. These applications normally require low speed, low noise, corrosion resistance, and so on, as well as in working conditions below 400°C.
Silicon nitride bearings are widely used in aerospace, racing cars, turbine engines, etc. These mechanical equipment commonly have high precision, high speed, and so on, as well as in working conditions above 800°C.
Zirconia bearings are relatively cheaper than silicon nitride. Therefore, in certain situations where cost control is required, The ZrO2 bearings are more advantageous.
The cost of silicon nitride bearings is relatively higher because of the complex manufacturing process and scarce materials.
ZrO2 (zirconium oxide) bearings are suitable for environments that require corrosion resistance, high toughness, low speeds, and temperatures below 400°C. and they are relatively low in cost.
Si3N4 (Silicon nitride) bearings are suitable for occasions with high temperature, high speed, high hardness, and high precision. They have lighter weight and better durability but at a higher cost.
LNB Bearing is a Chinese manufacturer and supplier of a wide range of bearings, which always provide great performance and quality-built bearings, winning lots of trust from worldwide customers. We have decades of experience in manufacturing and selling bearings. We can provide:
Through advanced manufacturing processes and high-quality materials, the LNB bearing is designed to be able to meet all the different requirements of customers. Our bearings are stable under extremely high load, speed, and environmental conditions. The LNB bearing features high wear resistance, corrosion resistance, fatigue resistance, etc., which effectively ensures that it can work well after long-term use to reduce equipment and device failure rates as well as maintenance costs.
A comprehensive range of LNB bearings includes ceramic bearings, deep groove ball bearings, thin section bearings, angular contact bearings, cylindrical roller bearings, tapered roller bearings, miniature bearings, spheric rollers bearings, and so on. Our bearing products are in various forms over multiple materials/types/sizes/models to fit a variety of industries and diverse application fields. For the automotive industry, large-scale mechanical equipment or precision instruments and skateboard wheels.etc., LNB bearing there are suitable products for you.
LNB bearing not only offers the best quality products but is also specific in great service to support satisfied experiences for customers. LNB bearings are available in OEM or ODM, keeping constant investment in R&D and technology improvement to offer the ideal product for our customers. At the same time, LNB bearings have been continuously innovated in materials and other sealing technologies such as dustproof and waterproof design to offer more comprehensive solutions for users.
LNB bearings always follow the concept of eco-friendly and sustainable development. Throughout product designing and manufacturing, LNB bearings emphasize energy saving and pollution reduction to minimize the harm caused by its operations on the environment. Meanwhile, LNB bearings also play a significant role in the innovation of recyclable products and reuse systems to support sustainability.
LNB Bearings Company has always been a leader in the provision of bearings and services to our customers with competitive price levels. We are exporting products around the world now. LNB has full formal channels for many well-known brands of bearings, such as SKF、NSK、FAG 、TIMKEN, etc., so customers can choose suitable bearings in different price brackets to better meet their needs.
| Basic Information | ||
| Model | 686 (ZrO2) | 686 (Si3N4) |
| Brand | LNB | LNB |
| System of Measurement | Metric | Metric |
| Bearing Type | Ball Bearing | Ball Bearing |
| Load Direction | Radial | Radial |
| Construction | Single Row | Single Row |
| Temperature Range | -115° to 400 °C | -115° to 800 °C |
| Weight | 0.0015 kg | 0.0008 kg |
| Product Dimension | ||
| Bore Dia | 6 mm | 6 mm |
| Bore Dia Tolerance | -0.008mm to 0 | -0.008mm to 0 |
| Outer Dia | 13 mm | 13 mm |
| Outer Dia Tolerance | -0.008mm to 0 | -0.008mm to 0 |
| Width | 3.5 mm | 3.5 mm |
| Width Tolerance | -0.120mm to 0 | -0.120mm to 0 |
| Material | ||
| Ring Material | Zirconia | Silicon Nitride |
| Ball Material | Zirconia | Silicon Nitride |
| Cage Material | PTFE | PTFE |
| Basic Load Rating | ||
| Dynamic Radial Load | 0.275 kN | 0.231 kN |
| Static Radial Load | 0.106 kN | 0.088 kN |
In ceramic bearings, zirconia and silicon nitride are two common materials. They both perform well in harsh and high-precision-required environments, such as aerospace, the chemical industry, high-precision instruments, and other special fields. Both ZrO2 and Si3N4 material bearings have the advantages of bare high hardness, high strength, excellent corrosion resistance, high-temperature resistance, etc. However, there are also some differences in performance and application.
Zirconia (ZrO₂) is heavier than silicon nitride, it is an oxide ceramic with good toughness and wear resistance. The high density of ZrO2 is about 6.0 g/cm³.
Zirconia bearings are good at corrosion resistance and thermal conductivity (easy to match with metal). And they have better fracture toughness than Si3N4 materials, so ZrO2 is suitable for withstanding greater mechanical stress.
Silicon nitride (Si₃N₄) has a lower density and is lighter than zirconia materials. The density is about 3.2 g/cm³ . As a non-oxide ceramic, silicon nitride is known for its ultra-high hardness and lightweight.
Silicon nitride is particularly suitable for high-temperature and high-speed operation environments. Though it is slightly less resistant to corrosion than zirconium oxide, it has extremely high hardness and strength, excellent compressive resistance, etc.
Better toughness: Among ceramic materials, zirconia has better toughness. Although under impact or high stress, it can remain stable and is not easy to break.
Low thermal conductivity: Because zirconia bearings have lower thermal conductivity, it is suitable for use in occasions requiring heat insulation.
Good wear resistance: Although zirconia materials have a slightly lower hardness than silicon nitride, their wear resistance is still excellent, and they can suit long-term operation.
Ultra-high hardness: Close to the diamond's hardness, The hardness of silicon nitride is very high. This property greatly improves silicon nitride bearings' wear resistance and makes them widely used in high-precision operation under extreme conditions.
Low density, lightweight:
Silicon nitride bearings can help machinery to reduce the total weight and improve their operating efficiency due to the material being light in weight.
High temperature stability: Silicon nitride bearings can maintain stable mechanical properties under high temperature and high-speed conditions. Just because it has very good high-temperature performance.
Zirconia bearings are often used in medical equipment, food processing machinery, the chemical industry, etc. environments. These applications normally require low speed, low noise, corrosion resistance, and so on, as well as in working conditions below 400°C.
Silicon nitride bearings are widely used in aerospace, racing cars, turbine engines, etc. These mechanical equipment commonly have high precision, high speed, and so on, as well as in working conditions above 800°C.
Zirconia bearings are relatively cheaper than silicon nitride. Therefore, in certain situations where cost control is required, The ZrO2 bearings are more advantageous.
The cost of silicon nitride bearings is relatively higher because of the complex manufacturing process and scarce materials.
ZrO2 (zirconium oxide) bearings are suitable for environments that require corrosion resistance, high toughness, low speeds, and temperatures below 400°C. and they are relatively low in cost.
Si3N4 (Silicon nitride) bearings are suitable for occasions with high temperature, high speed, high hardness, and high precision. They have lighter weight and better durability but at a higher cost.
LNB Bearing is a Chinese manufacturer and supplier of a wide range of bearings, which always provide great performance and quality-built bearings, winning lots of trust from worldwide customers. We have decades of experience in manufacturing and selling bearings. We can provide:
Through advanced manufacturing processes and high-quality materials, the LNB bearing is designed to be able to meet all the different requirements of customers. Our bearings are stable under extremely high load, speed, and environmental conditions. The LNB bearing features high wear resistance, corrosion resistance, fatigue resistance, etc., which effectively ensures that it can work well after long-term use to reduce equipment and device failure rates as well as maintenance costs.
A comprehensive range of LNB bearings includes ceramic bearings, deep groove ball bearings, thin section bearings, angular contact bearings, cylindrical roller bearings, tapered roller bearings, miniature bearings, spheric rollers bearings, and so on. Our bearing products are in various forms over multiple materials/types/sizes/models to fit a variety of industries and diverse application fields. For the automotive industry, large-scale mechanical equipment or precision instruments and skateboard wheels.etc., LNB bearing there are suitable products for you.
LNB bearing not only offers the best quality products but is also specific in great service to support satisfied experiences for customers. LNB bearings are available in OEM or ODM, keeping constant investment in R&D and technology improvement to offer the ideal product for our customers. At the same time, LNB bearings have been continuously innovated in materials and other sealing technologies such as dustproof and waterproof design to offer more comprehensive solutions for users.
LNB bearings always follow the concept of eco-friendly and sustainable development. Throughout product designing and manufacturing, LNB bearings emphasize energy saving and pollution reduction to minimize the harm caused by its operations on the environment. Meanwhile, LNB bearings also play a significant role in the innovation of recyclable products and reuse systems to support sustainability.
LNB Bearings Company has always been a leader in the provision of bearings and services to our customers with competitive price levels. We are exporting products around the world now. LNB has full formal channels for many well-known brands of bearings, such as SKF、NSK、FAG 、TIMKEN, etc., so customers can choose suitable bearings in different price brackets to better meet their needs.
