| Model Number: | SMR74-2RS SMR74 2RS MR74 CB |
|---|---|
| Material: | as description |
| is_customized: | Yes |
| Type: | Window Rollers |
| Unit Type: | piece |
| Package Size: | 1cm x 1cm x 1cm (0.39in x 0.39in x 0.39in) |
| Package Weight: | 0.05kg (0.11lb.) |
Quick Details
Specifications
SMR74-2RS SMR74 2RS MR74 CB ABEC7 4x7x2.5mm Fishing vessel bearing zirconia ceramic ball bearing hybrid ceramic bearing
Inner diameter 4mm
Outer diameter 7mm
Thickness 2.5mm
Special bearing gear, outer ring and ball is made of stainless steel 440C, a retainer and a dustproof cover is made of stainless steel 304, excellent antirust effect change bearing troubles often can be avoided, customized bearing clearance for fishing vessels turning is more stable, ABEC - 7 levels of precision bearing let turn more smooth, bearing the default does not add any lubricating grease, fishing vessels start easily, can make the turn more smoothly, if you have special requirements please specify.
The advantages of hybrid ceramic ball:
1.Oilless self-lubrication, ceramic ball has oilless self-lubrication property, so the ceramic ball bearing can not add grease
2.Insulation, rolling body with ceramic balls, can achieve the insulation between the inner ring and the outer ring of the bearing.
3.High speed, speed than bearing speed with ceramic balls is much higher.
4.Long service life, the ordinary bearing in the water and high temperature environment, easy to wash off the grease or kill, such bearing soon bad, using ceramic balls as rolling bodies, do not have to worry about these problems.
5.Waterproof: ordinary bearing used in the water, wash oil, bearing soon broke down, the ceramic ball, can be normal use in the water.
4.: Bike skateboard wheel mainly used in medical equipment, optical instruments, printing machinery, cryogenic engineering, food processing machinery
And all kinds of rotating equipment...
Hybrid BearingUsing ceramic material instead of steel rolling body, with the aim of the former is better than the latter or the latter does not have the wear resistance, corrosion resistance, high temperature resistance, electrical insulation (except SiC), non magnetic, high strength, high stiffness, small proportion of other properties. The use of ceramic materials in the bearing high speed, low and normal operation environment more demanding lubrication occasions, and can reduce wear, reduce noise, reduce vibration, make maintenance easier, so as to achieve a longer service life of the bearing, and greatly improves its performance and reliability. It is suitable for ceramic materials bearing.
Ceramic bearing as a kind of important basic pieces of machinery, due to the excellent performance, which has a metal bearing incomparable high temperature, super strength in the new material world dominate. In recent years, has been widely used in various fields. The beneficial to the people's livelihood aerospace, marine, nuclear industry, petroleum and chemical industry the textile industry, machinery, metallurgy, electric power, food, locomotive, subway, high-speed machine and military technology research in high temperature, high speed, cryogenic, flammable, explosive, corrosive, vacuum, electrical insulation, non magnetic, dry friction under special working conditions, the substitution effect of ceramic bearings are indispensable people understand gradually. With the continuous progress of processing technology, technology level increasing, ceramic bearing costs continue to decline, from the past only in some high, fine, sharp field within a small range of applications, and gradually extended to the national Various industrial sectors of the economy, the market price of the product is gradually close to the practical application, the user reaches an acceptable level, a large area of application of ceramic bearing wave has come !
Can be used in high speed, low temperature, high temperature ceramic bearings, strong corrosion, strong magnetic field, vacuum, high pressure and other harsh conditions. Correct selection and use of ceramic bearing for the convenience of people, will be the main characteristics of ceramic bearings is introduced as follows: 1)High bearing capacity - ceramic material hardness up to 2 times the size of bearing steel, when the elastic modulus of bearing steel is 1.5 times. So the bearing capacity of the ceramic bearing is also significantly higher than that of bearing steel bearing. & have spent
2)Good heat resistance , the decrease of strength of ceramic materials at high temperature is very small, even at 800 degrees Celsius remained has high strength and mechanical properties, and ceramic material the inflation rate is only 22% of bearing steel, thus high size stability is good. & have spent
3)High limit speed- ceramic ball bearing working speed can reach more than 1.3 times of the same type of bearing steel bearing limit speed. 4) the frictional temperature of small ceramic ball bearings running in 18000r/min speed when the temperature is about the same under the condition of bearing temperature rise bearing steel 60%.
5)Small friction loss- the same types of bearings, the quality of ceramic materials than steel, rolling operation by centrifugal force and gyroscopic moment, spin sliding small, so the friction loss was significantly lower than that of bearing steel bearing.
6)High durability Ceramic material with high hardness, excellent wear resistance, ceramic ball bearing working life is generally ordinary bearing steel bearing more than 2 times.
7)Good corrosion resistance Ceramic material is resistant to hydrochloric acid, sulfuric acid, nitric acid, caustic soda and other kinds of inorganic acid, organic acid, salt, alkali and corrosion of molten metal, but in hydrogen fluoride and molten iron, its poor corrosion resistance, the use of must pay attention.
8)Good insulation --Low permeability - almost as insulators, permeability is far less than 0.1 H, suitable for any non magnetic parts. & have spent
9)Self lubrication- ceramic bearing can realize self-lubrication. Currently the most used as a bearing material is zirconium oxide and silicon nitride.