Product Description


Item Description

Our precision deep groove ball bearings are designed for substantial precision, lower sound, small vibration, higher trustworthiness and lengthy existence. They are mainly utilized in numerous types of electric powered motors. They are also known as EMQ (Electrical Motor Good quality) bearings.
 our bearings are extensively utilised in family appliances, toys, electric electricity instruments, automobile motors and other fields. With optimum design and style, large reliability heat therapy, precision production processes and large-grade grease, these goods complete better on dependability, vibration and sound stages making them more suitable for electrical motor apps. These items can also be used to most gearbox apps as properly.

The deep groove ball bearing is the most common structure in rolling bearing and for in depth goal. This kind of bearing can have the two the radial load and the axial load, Many thanks to the modest friction moment, It is most ideal for the working event of higher pace rotation, lower sounds and low vibration. The bearing is commonly utilized to auto, electric appliances, instruments, constructional mechanisms, agricultural machines and other specific machineried. These kinds of bearing is in numerous diverse constructions such as open up and near types.

Inner ring and outer ring: imported material requirements, wonderful grinding, total inspection, black chamfer import process

Steel ball: higher good quality large quality steel ball

Cage: riveted stamped metal cage Dust go over: ZZ, stamped steel plate, high speed procedure, no printing can be custom-made

Sealing ring: 2RS, manufactured of rubber, dustproof and waterproof, no printing can be customized

Grease: totally meets normal grease loading


Metal stainless steel, brass or PEEK cages can be used at the exact same functioning temperatures as the bearing rings and balls.For temperature limits of cages made of other CZPT components,refer to CZPT cages.


The perissible procedure temperature for seals relies upon on the seal content.

NBR:-40 to +one hundred ºC (-40 to -210 ºF) 

Temperatures up to a hundred and twenty ºC (250 ºF) can be tolerated for bried durations.

FKM:-thirty to +200 ºC (-20 to +390 ºF)

Temperatures up to 230 ºC (445 ºF) can be tolerated for brief durations.

  • 6812ZZ (I.D.=60mm, O.D.=78mm, Thickness=10mm)
  • 6812-2Z bearings are shielded on The two SIDES to preserve CZPT in
  • Made from Chromium Steel (GCr15), durability and resistance to beneath weighty masses
  • ABEC Tolerance 1 (P0), Z2 Sound Stage for most common use
  • Static load ranking of 10600 newtons and dynamic load ranking of 11500 newtons

Be aware:
Make sure you refer to the photograph and select right type of bearings before your buy (Sealed or Shield on Equally or One aspect of the bearing). Suffix on the bearing just for differentiating among Sealed and Defend type of bearing. It would not affect the use of our item.


One-row, pre-lubricated, CZPT precision.
Deep Groove Ball Bearings are 1 of the most commonly utilized rolling bearings.
With modest friction and large-restrict pace, Ball Bearings are price-efficient and demand minor maintenance.
Ideal for all varieties of industrial products, CZPT motor, little rotary motor, workplace products and so on.

Choosing Xihu (West Lake) Dis.:
Shields (Designation Suffix Z/ZZ) – Higher velocity. Shield from grime and debris.
Sealed (Designation Suffix RS/2RS) – Created of sheet metal strengthened rubber (oil- and liquid-resistant). Reduced limit pace than Shield Bearings.

Product: 6812ZZ
Seal Variety: Double Shielded
Rolling Ball Material: Chromium Steel (GCr15)
Cage Materials: Stamping Metal
Internal Diameter: 60mm
Outer Diameter: 78mm
Thickness: 10mm
Dynamic Load Score (Cr): 11500N
Static Load Ranking (Cor): 10600N
Accuracy Class: P0 (ABEC1)
Noise Degree: Z2
Package deal Contents: 10Pcs



In depth Images


Packaging & Shipping and delivery

Packaging Particulars
A.Polybag +Box+Carton 
C.As for each customer’s request 
We have types of packages, this sort of as plastic luggage, cartons, particular boxes. We use diverse packages dependent on the goods and our customers’ needs.
Port :ZheJiang
Direct Time:Shipped in thirty times following payment

Business Profile

Our Benefits

The use of our deep groove ball bearing:


If you have any other queries, remember to feel totally free to get in touch with us as follows.


Q: Why CZPT you decide on us?

A. We give the very best high quality bearings with sensible cost, lower friction, minimal sounds and extended support existence.

B. With enough inventory and quickly shipping and delivery, you can decide on our freight forwarder or your freight forwarder.

C. The best provider presented by a well-qualified worldwide sales team.


Q: Do you settle for tiny orders?

100% top quality examine, as soon as your bearings are common size bearings, even one particular, we also settle for.


Q: How long is your supply time?

Typically speaking, if the items are in stock, it is 1-3 times. If the items are out of inventory, it will get 6-10 times, relying on the amount of the order.


Q: Do you offer samples? Is it cost-free or added?

Indeed, we can offer a small amount of free samples. Do you head paying out the freight?


Q: What need to I do if I don’t see the variety of bearings I need?

We have too a lot of bearing collection quantities. Sometimes we can not set them all on net. Just ship us the inquiry and we will be quite satisfied to ship you the bearing information.


Welcome to make contact with me at any time!

Materials Employed in Bearings

If you happen to be not common with the types of bearings, you might be intrigued in knowing much more about the materials utilized to manufacture them. Here is a search at what each variety of bearing is made of, how it really is utilised, and how considerably they value. To discover the proper bearing for your application, it really is essential to decide on a top quality lubricant. The materials used in bearings are determined by their sort and apps. Choosing the right lubricant will extend its lifestyle, and shield your machine’s elements from hurt and premature use.

Components employed in bearings

Bearings are manufactured from a selection of supplies. Stainless metal is a widespread substance utilised for the components of bearings. It has a higher content of chromium and nickel. When exposed to oxygen, chromium reacts with it to type chromium oxide, which offers a passive movie. For larger temperatures, teflon and Viton are also utilised. These resources provide exceptional corrosion resistance and are frequently favored by companies for their unique homes.
Stainless metal is one more materials used in bearings. AISI 440C is a higher-carbon stainless metal typically employed in rolling-make contact with bearings. It is widely used in corrosive environments, particularly in applications where corrosion resistance is a lot more critical than load ability. It can also be warmth-dealt with and hardened to 60 HRC, but has reduced tiredness existence than SAE 52100. Stainless metal bearings might carry a 20-40% value premium, but their superior efficiency is well worth the additional funds.
Graphite and molybdenum disulfide are two of the most typical components used in bearings. Although graphite is a well-known content in bearings, it has extremely poor corrosion resistance and is unsuitable for applications in which oil or grease is essential. Graphite-dependent composite components are yet another choice. They mix the positive aspects of both graphite and ceramic components. A assortment of proprietary components have been developed for higher-temperature use, these kinds of as graphite and MoS2.
Wood bearings have been around for centuries. The oldest types utilized wooden and Lignum Vitae. These supplies had been lightweight, but they have been exceptionally robust and tough. Wooden bearings have been also lubricated with animal fat. Throughout the 1700s, iron bearings have been a common selection. In 1839, Isaac Babbitt invented an alloy containing tough metallic crystals suspended in a softer metal. It is regarded a steel matrix composite.

Programs of bearings

Bearings are utilised in several diverse industries and programs to support aid rotation. The metallic surfaces in the bearings support the fat of the load, which drives the rotation of the unit. Not all loads use the same quantity of force to bearings, nonetheless. Thrust and radial loads act in distinctly various ways. To much better understand the different utilizes of bearings, let’s examine the different varieties of bearings. These functional gadgets are crucial for a lot of industries, from vehicles to ships and from construction to industrial procedures.
Cylindrical roller bearings are made to support hefty loads. Their cylindrical rolling aspect distributes the load in excess of a bigger area. They are not, nonetheless, suited to managing thrust masses. Needle bearings, on the other hand, use tiny diameter cylinders and can match into tighter areas. The advantages of these types of bearings are quite a few, and a lot of top producers are now leveraging the Industrial Web of Items (IIoT) to create connected intelligent bearings.
As a electricity era business, bearings play an important part. From turbines to compressors, from turbines to pumps, bearings are essential factors of tools. In addition to bearings, these components support transfer the products, so they can function correctly. Normally, these elements use ball bearings, despite the fact that some roller bearings are used as well. In addition to becoming efficient and resilient, these types of bearings also are inclined to be constructed to meet up with stringent inner clearance needs and cage design specifications.
In addition to bearings for linear movement, bearings can also bear the bodyweight of a rotary portion. Based on the application, they can be developed to lessen friction between shifting areas. By constraining relative movement, bearings are used to lessen friction inside a given application. The very best-developed bearings reduce friction in a given software. If you happen to be in the marketplace for a new bearing, NRB Industrial Bearings Minimal is an excellent source to commence your research.

Types of bearings

The type of bearings you pick will have a important influence on the overall performance of your equipment. Utilizing the right bearings can improve effectiveness, accuracy, and service intervals, and even minimize the value of getting and operating equipment. There are numerous distinct kinds of bearings to decide on from, such as ball bearings and flexure bearings. Some types use a fluid to lubricate their surfaces, although others do not.
Plain bearings are the most common kind of bearing, and are utilised for a assortment of programs. Their cylindrical design and style permits for a comparatively easy motion. Typically created of copper or other copper alloy, they have low coefficients of friction and are commonly used in the construction sector. Some varieties of basic bearings are also available with a gudgeon pin, which connects a piston to a connecting rod in a diesel engine.
Magnetic bearings are the latest sort of bearing. They use everlasting magnets to produce a magnetic subject close to the shaft without demanding any electrical power. These are challenging to design, and are even now in the early levels of advancement. Electromagnets, on the other hand, require no electrical power but can carry out really high-precision positioning. They can be really tough and have a lengthy provider existence. They are also light-weight and simple to restore.
An additional sort of bearing is needle roller. These are manufactured of slim, lengthy, and slender cylinders that are utilised in a variety of apps. Their slender dimension is perfect for a place-constrained software, and their small profile permits them to suit in limited spots. These types of bearings are often used in automotive purposes, bar stools, and digicam panning products. They have a number of rewards more than ball bearings, which includes the capability to manage weighty axial loads.

Cost of bearings

A broad assortment of factors affect the cost of aerospace bearings, like the bearing material and its volatility. Manufacturers generally use substantial-grade steel for aircraft bearings, which are extremely affected by fluctuations in the steel cost. Govt procedures also perform a portion in the variation in trade cost. The implementation of COVID-19 has modified the market place dynamics, generating an unsure outlook for offer and desire of aerospace bearings. New trade norms and transportation limitations are anticipated to hamper the expansion of this market.
Demand for aerospace bearings is mainly pushed by aircraft manufacturers. In North America, aircraft makers should meet incredibly large standards of weight, overall performance, and good quality. They also need to be lightweight and cost-effective. This has resulted in a increasing price of aerospace bearings. The marketplace for aerospace bearings is predicted to expand at the greatest CAGR above the next number of many years, driven by rising investments in defense and aerospace infrastructure throughout Asia-Pacific.
Hub assemblies are also high-priced. A wheel hub will price amongst $four hundred and $five hundred for a single set of bearings. In addition to this, the speed sensor will be incorporated. The common expense of wheel bearings is between $400 and $five hundred for a single side, such as labor. But this value selection is considerably decrease if the bearing is a alternative of an total wheel assembly. It is even now really worth noting that wheel hub bearings can be obtained independently for a reduced price.
Replacement of one or two wheel bearings will depend on the design and 12 months of the motor vehicle. For a little car, one particular rear wheel bearing can cost amongst $190 and $225, while two entrance wheel hubs can value upwards of $1,000. Labor and parts charges will vary by location, and labor fees may possibly also be protected beneath some guarantee strategies. If you choose to have it accomplished oneself, be certain to ask a number of stores for estimates.

Inspection of bearings

To keep bearing overall performance and prevent incidents, periodic inspections are important. In addition to making sure reliability, these inspections enhance productiveness and performance. Standard maintenance contains disassembly inspection, replenishment of lubricant and checking operation status. Listed here are some common methods to complete the essential inspections. Hold studying to understand how to keep bearings. Soon after disassembly, you must cleanse the components extensively. Make certain that the bearings are free of charge of burrs, particles, and corrosion.
Ultrasound technologies is an exceptional resource for checking gradual-pace bearings. Most ultrasound devices offer broad-ranging sensitivity and frequency tuning. Ultrasound can also be utilised to check bearing seem. Ultra-sluggish bearings are normally large and greased with higher-viscosity lubricant. Crackling sounds indicate deformity. You can also pay attention for irregular noise by plugging a vibration analyzer into the device. After the device exhibits irregular sounds, plan added inspections.
Ultrasonic inspection includes employing an ultrasound transducer to evaluate the amplitude of seem from a bearing. It is efficient in early warnings of bearing failure and prevents above-lubrication. Ultrasound inspection of bearings is a expense-powerful solution for early prognosis of bearing issues. In addition to currently being a trustworthy device, ultrasonic testing is electronic and simple to apply. The adhering to are some of the rewards of ultrasonic bearing inspection.
Dynamic good quality evaluation entails the use of a specific fixture for measuring bearing deformations below reduced shaft speed and light-weight radial load. The dimension of the fixture influences the benefit of the deformations. A fixture need to be sized in between the diameter of the sensor and the roller to make sure maximum precision. The outer deformation sign is far more delicate with a larger sensor diameter. A vibration-acceleration sensor is employed for the distinction test.

China Custom 6812zz Deep Groove Ball Bearing Z2 60mm X 78mm X 10mm Double Shielded Chrome Steel     with high qualityChina Custom 6812zz Deep Groove Ball Bearing Z2 60mm X 78mm X 10mm Double Shielded Chrome Steel     with high quality

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