| Precision: | P0.P6.P5 |
|---|---|
| Cage Material: | Brass.Nylon Plastic Full Ball |
| Outer Ring: | Chrome Steel |
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Thin section bearings are used in instrumentation, robotics, aerospace, medical equipment, cameras and optical equipment. They are chosen for an application where space is at a premium or weight reduction is required. Thin section bearings have low rotational torque and high rotational accuracy. Thin section bearings are designed for mainly radial loads. They will support axial loads but, with the 6700 series in particular, these should be limited due to the shallower raceways. Our chrome steel thin section bearings are also available with a flange on the outer ring as shown in Products Variants below.
Chrome steel is the standard material for ball bearings thanks to its high load capacity and low noise properties. Chrome steel thin section bearings, with a steel retainer and a suitable lubricant, can be used at temperatures of 120°C constant or up to 150°C intermittent. Above these temperatures, the load capacity of chrome steel is reduced and the steel undergoes greater dimensional changes.
Chrome steel bearings are not suitable for use in corrosive environments as the steel is not corrosion resistant. Most of our chrome steel thin section bearings can be supplied with metal shields although the larger 6700 series bearings are only available with seals. Many sizes are available with rubber contact seals or low friction non-contact rubber seals. Open bearings are supplied with a light oil lubrication. Shielded or sealed bearings are usually supplied with grease lubrication but shielded bearings can be offered with instrument oil for low speed, low friction applications. Thanks to our in-house relubrication facility, these thin section bearings are also available with customer specified oils, greases or dry lubricants.
A one-piece crown cage is more common for the smallest and the thinnest section bearings due to space constraints. All 6700 series bearings use a crown cage. Many 6800 and 6900 series bearings have a two piece ribbon cage. Some sizes are also available with the high speed TW nylon crown cage.
Attent
Equal-section ultra-thin bearings are specially designed bearings, the main characteristics of which are consistent cross-section height and very thin overall thickness. These bearings are typically used in applications where space is limited, high precision and low friction are required. Here are some key points about equal-section slim bearings:
1. Design features
Equal cross-section design: The cross-sectional height of the bearing is consistent throughout the circumference to ensure uniform force.
Ultra-thin construction: The overall thickness of the bearing is very small, making it suitable for installation in equipment where space is limited.
High precision: High-precision machining technology is usually used to ensure smooth operation and low friction.
Lightweight: Due to the small amount of material used, the overall weight is light, making it suitable for weight-sensitive applications.
2. Fields of application
Precision instruments: such as optical equipment, measuring instruments, etc.
Robot: Used on joints to reduce space occupation.
Medical equipment: such as CT machine, MRI machine, etc.
Aerospace: For high-precision, lightweight components.
Electronics: such as hard disk drives, micro motors, etc.
3. Material selection
Bearing steel: GCr15 and other high-carbon chromium bearing steels are commonly used, which have high hardness and wear resistance.
Ceramic materials: for use in high-speed, corrosion-resistant or high-temperature environments.
Stainless steel: for use in wet or corrosive environments.
4. Manufacturing process
Precision machining: CNC machine tools, grinding machines and other high-precision equipment are used.
Heat treatment: improve hardness and wear resistance through quenching, tempering and other processes.
Surface treatment: such as chrome plating, nitriding, etc., to enhance corrosion resistance and wear resistance.
5. Precautions for selection
Load capacity: Select the appropriate bearing type according to the actual load.
Speed requirements: High speed applications require the selection of appropriate lubrication methods and materials.
Installation space: Make sure the bearing size matches the installation space.
Environmental conditions: Consider factors such as temperature, humidity, corrosiveness, etc.
6. Frequently Asked Questions
Insufficient lubrication: This may lead to bearing wear or seizure, and the lubrication status needs to be checked regularly.
Improper installation: It may cause deformation or damage to the bearing, and it should be installed in strict accordance with the specifications.
Material fatigue: Long-term high-load operation may lead to material fatigue, which needs to be checked and replaced regularly.
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