China Professional 105X145X20mm6921zz R7220 T37 C3 C0 Mc3 Open Miniature Ball Bearing for Office Equipment CZPT Motor Fan Instrument Toy Model Laser Small Clock Machine Industry near me factory

Merchandise Description



Merchandise Description

Deep groove ball bearing/radical ball bearing
The bearing perform as low noise, high precision, extended operating time, no irregular seem, and no interference.
They are extensively used on electrial appliances, miniature motors, electric enthusiasts, bikes, cars, healthcare instruments, sports devices, textile and agricultural machineries and so forth..

Product Parameters

Design No.: 6921-ZZ, 6921-2RS
Bearing measurement:105X145X20mm
Materials: GCr15/52100/100Cr6

Firm Profile

HangZhou CZPT Bearing Co.,Ltd was proven in 2000. It is situated in China’s little bearing manufacturing base, the gorgeous city of HangZhou, HangZhou. We are an worldwide standard generation firm. We focus in generating miniature, small bearings, skinny-walled bearings, flange bearings and all sorts of deep groove ball bearings these kinds of as MR, MF. Our firm has sturdy creation ability, exceptional manufacturing products, innovative creation technology and excellent quality inspection program. We adopt a standardized management manner. Our firm has 4 million sets of bearings in stock. You can get the bearings you want in a number of times.


Q: Are you trading organization or producer ?
A: We are manufacturing unit and trading company. 
Q: How lengthy is your shipping and delivery time?
A: Inside of 7 days with stock.  15-30 days for 1 container to OEM manufacturer subsequent your ask for
Q: Do you give samples ? is it free of charge or added ?
A: Yes, we could supply the sample for totally free cost, freight value want to be charged.
Q: What is your payment time period?
A: We take 30% TT CZPT ,70% stability towards the bill loading duplicate. Also one hundred% L/C is alright.

Types of Ball Bearings

There are numerous types of ball bearings: Double-row angular get in touch with, Four-level get in touch with, Self-aligning, and Ceramic hybrid. Here is a short description of every single. For more info, go through our report about Double-row angular speak to ball bearings. You’ll be greater informed about how they are made. Also, discover about how the cages that keep the balls in place are secured with rivets.

Double-row, angular-speak to bearing

Double-row, angular-speak to ball bearings are comparable in their contact surfaces in one particular direction, and the two pairs of bearings are mounted axially reverse to a single an additional. This layout makes it possible for them to support mixed loads in axial and radial directions. These varieties of bearings are utilised for higher-precision, high-speed programs. They can be utilised in almost everything from turbines to dentistry tools. Double-row, angular-speak to bearings are offered at Grainger, as are single-row variations.
Double-row, angular-speak to ball bearings are a well-liked choice for applications the place substantial precision and high speed are needed. The design and style functions of these bearings are ideal for applications with axial space limitations. In contrast, they are scaled-down than two single-row angular-speak to bearings and are obtainable in steel, polyamide, or brass cages. Regardless of whether you require a cage for substantial speed or difficult running circumstances is up to you. If you are not sure about the right cage for your software, make contact with Schaeffler.
One-row angular-speak to ball bearings are the most frequent kind of bearings. Double-row bearings are also obtainable with a shielded outer ring, which safeguards the balls within the bearing from exterior contaminants. Due to the fact these double-row bearings are a great option for apps requiring large functionality, they are usually the most inexpensive option. They supply comparable performance as solitary-row bearings but are a lot much more rigid.
Preloading is a key functionality attribute for double-row angular-get in touch with ball bearings. Preloading can decrease the support lifestyle of double-row angular-make contact with ball bearings by up to 380 per cent. Alternatively, you can preload double-row angular-make contact with ball bearings by positioning spacers among their outer rings. Great double-row angular-get in touch with bearing set up will improve functioning precision and bearing lifestyle.

Four-stage speak to ball bearing

The Four Position Speak to Ball Bearing Marketplace can be segmented into a few varieties: 35 Degree, 45 Diploma, and Other. The 35 Diploma section is expected to witness the fastest expansion in excess of the up coming few years, owing to its elevated operational velocity and competence in axial and radial axis load handling. Other sorts of four-point make contact with ball bearings include the Miniature and Deep Groove types. These are commonly employed in vehicles, aerospace, and other industries.
These bearings are made for oil-totally free screw compressors, and they function an outer-ring guided brass cage to lessen friction and improve managing precision. In addition, they have reduce maintenance charges in comparison to typical bearings. Even so, they have a greater mean roughness worth than their counterparts. Higher-velocity functions call for substantial-pace bearings that can withstand fast pace changes. This is since of the higher friction charge, which final results from 4-position get in touch with.
The Four-Level Get in touch with Ball Bearing is a extremely adaptable merchandise, as it can deal with radial, thrust, and moment hundreds. Since of this, it is frequently the 1st option for gradual to moderate-pace purposes. This design also has a simplified assembly method, requiring only a one double-fifty percent-flip to set up. It is the first selection of a lot of automotive OEMs simply because it is very successful. If you want a ball bearing with these positive aspects, you ought to get in touch with a nearby bearing company.
The 4-Position Get in touch with Ball Bearing Market will continue to expand despite a challenging economic system and volatile trade conditions. Desire for automotive and aerospace components is predicted to increase together with a variety of technological advancements. Meanwhile, need for power-efficient items will carry on to improve with changes in trade policy, an imbalance in the source-facet ecosystem, and geopolitical chance. And while all these factors will proceed to drive the marketplace development, a handful of difficulties are worth thinking about.
The 4-Position Make contact with Bearing is created with the very same simple structure as its two-level counterpart. In a 4-point make contact with ball bearing, 1 ball can have 4 distinct points of speak to with two rings. Two of these speak to details may possibly be in diagonal situation. The two remaining get in touch with details modify position and accommodate radial loads. Consequently, the Four-Point Speak to Bearing is much more versatile and strong than its two-point counterparts.

Self-aligning ball bearing

The self-aligning ball bearing is an exceptionally beneficial instrument in a lot of industries. This type of bearing has a sealing lip that helps make contact with a smooth chamfer on the internal ring. Due to the fact of the self-aligning mother nature of these bearings, they are not susceptible to misalignment. They can endure temperatures ranging from -30°C to 120°C and need to not be heated prior to installation.
A self-aligning ball bearing is an elastomer-based mostly spherical-formed bearing with two rows of rolling aspects. These bearings can accommodate big radial hundreds, and their outer ring raceway is curved to supply a spherical result. The inner ring, or cage, can be possibly cylindrical or conical. The internal diameter of a self-aligning ball bearing is usually cylindrical, but some are conical. They generally have 3 oil holes.
When picking a self-aligning ball bearing, seem for a design with a huge sufficient bearing diameter to accommodate the shaft’s bending. Self-aligning bearings might also be interchangeable with normal ball bearing assemblies. You can discover personal values in maker catalogues. These bearings are useful in minimal apps, even though they are not essentially excellent for almost everything. For case in point, in applications where combined hundreds are the primary worry, self-aligning ball bearings need to only be used if the software calls for small misalignment.
A self-aligning ball bearing is a very-efficient, vitality-successful answer for a range of purposes. It is a straightforward, minimal-upkeep answer that helps make your life less difficult. Its special outer raceway allows restraining springs to soak up the deflection that is common in other bearings. The consequence is a cooler, smoother operating automobile. It also will help avoid misalignment, which makes it perfect for use in numerous apps.
The SKF self-aligning ball bearing is an outstanding decision for purposes involving large deflection of the shaft. They are the least expensive-friction bearing available. Their steel plate bolstered seals prevent them from separating from the shaft in the course of operation. They are also resistant to oil, creating them the excellent resolution for higher-pace programs. In addition to this, they are developed to perform in a vast assortment of temperatures.

Ceramic hybrid ball bearing

A hybrid ball bearing manufactured from a blend of steel and ceramics is a excellent selection for higher-pace apps demanding electrical isolation. This mixture provides an extended lifespan and minimal electrical corrosion or seizure risk. In addition, the hybrid ball bearings have considerably less friction than metal bearings and can operate at reduced speeds. To discover more about this hybrid sort of bearing, keep on looking through. We’ll also talk about how it can help your application.
Complete ceramic balls are normally more difficult than metal, but they do have reduce density, meaning they are not subject to the very same substantial centrifugal forces as steel balls. These rewards make ceramic ball bearings much much more resilient, with extended lifespans. Both full and hybrid ceramic ball bearings are available from GRW. Read through on to find out more about every single sort. Here is a look at some of the benefits of every. You may be pleasantly shocked.
A hybrid ball bearing consists of metal internal and outer rings and a ceramic ball. It can withstand substantial speeds and hundreds, but it is also developed to function in intense temperatures. This hybrid ball bearing also demands minimal lubrication and is suitable for a variety of purposes. Simply because of its unique characteristics, hybrid bearings are lightweight and challenging, and they spin quicker than steel balls. But how do you choose the right a single for your application?
A ceramic ball bearing is much better than a metal one for several apps. Its higher speed functionality and reduce friction let it to run at increased speeds than metal balls. It is also much less sensitive to fluctuations in lubrication situations than metal balls. They also are inclined to be more affordable, so it tends to make perception to commit in 1. It is really worth your while. They final lengthier, and they never demand a operate-in period.
A hybrid ball bearing is the greatest selection for electrical spindles with higher velocity and large hundreds. A hybrid ceramic ball bearing has the benefit of minimal heat and high stiffness, and can work at large speeds and loads. This thesis explores the dynamic characteristics of a hybrid ceramic ball bearing, including investigation calculations and experiment verification. The outcomes offer reputable data and lay the foundation for skilled spindle the best possible layout checks. It is a worthy addition to any equipment store.

China Professional 105X145X20mm6921zz R7220 T37 C3 C0 Mc3 Open Miniature Ball Bearing for Office Equipment CZPT Motor Fan Instrument Toy Model Laser Small Clock Machine Industry     near me factory China Professional 105X145X20mm6921zz R7220 T37 C3 C0 Mc3 Open Miniature Ball Bearing for Office Equipment CZPT Motor Fan Instrument Toy Model Laser Small Clock Machine Industry     near me factory