Merchandise Description


Product Description

Our precision deep groove ball bearings are made for higher precision, reduced sound, modest vibration, high trustworthiness and extended lifestyle. They are primarily used in numerous kinds of electric motors. They are also known as EMQ (Electric powered Motor Good quality) bearings.
 EMQ bearings are extensively employed in house appliances, toys, electric powered energy instruments, vehicle motors and other fields. With optimal design and style, higher reliability warmth treatment, precision manufacturing processes and higher-quality grease, these products execute far better on dependability, vibration and sound stages than normal products making them a lot more ideal for electric motor programs. These products can also be utilized to most gearbox purposes as nicely.

  • 6204-2RS ball bearings are produced of bearing metal with an inner diameter of twenty mm, an outer diameter of forty seven mm and a depth of 14 mm.
  • Conforms to ABEC 3 precision common for functionality within a slender variety of variation
  • Made of higher top quality bearing metal and the lifespan is lengthier than carbon metal, saving you servicing charges and steering clear of frequent substitution.
  • This bearing has rubber seals on each sides to preserve CZPT in and contaminants out and has been lubricated at the producer so no extra lubrication is essential.
  • Rolling bearings are used in a range of purposes from agricultural CZPT to conveying equipment, robotics, dental products, elevators, rolling mills, ship rudder shafts, and mixture crushers, amid other people.

Product: 6204 2RS

Amount for each Bundle: ten Pcs 

Material: a hundred% Chrome Steel 

Safety: Rubber Seal on equally sides 

Greased / Lubricated: Yes 

Bore (Interior) Diameter: 20 mm 

Outer Diameter: 47 mm 

Width (Thickness): fourteen mm 

Supported Revolutions for every Moment (RPM): 17,000 
6204RS (20x47x14) is a one-row bearing that supports radial masses, produced with Chromium Steel offering excellent good quality and durability. It arrives pre-lubricated and shielded to preserve the CZPT in and contaminants, dust and particles out.


Comprehensive Pictures

Packaging & Shipping

Packaging Details
A.Polybag +Box+Carton 
C.As for each customer’s request 
We have sorts of offers, this kind of as plastic luggage, cartons, particular boxes. We use distinct offers dependent on the items and our customers’ requirements.
Port :ZheJiang
Guide Time:Shipped in 30 times following payment

Organization Profile

Our Rewards

The use of our deep groove ball bearing:


If you have any other inquiries, you should really feel cost-free to speak to us as follows.


Q: Why CZPT you select us?

A. We provide the best high quality bearings with realistic price, low friction, reduced noise and long provider life.

B. With ample inventory and quick delivery, you can pick our freight forwarder or your freight forwarder.

C. The ideal provider supplied by a well-trained international income group.


Q: Do you accept small orders?

100% top quality check out, as soon as your bearings are standard measurement bearings, even a single, we also acknowledge.


Q: How prolonged is your shipping and delivery time?

Usually speaking, if the items are in inventory, it is 1-3 times. If the merchandise are out of stock, it will just take 6-ten days, based on the amount of the purchase.


Q: Do you provide samples? Is it free or further?

Of course, we can give a small quantity of free samples. Do you thoughts having to pay the freight?


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

We have too numerous bearing sequence figures. Often we can not put them all on web. Just deliver us the inquiry and we will be extremely content to ship you the bearing specifics.


Welcome to make contact with me anytime!

Supplies Utilised in Bearings

If you might be not common with the types of bearings, you may possibly be interested in being aware of far more about the supplies used to manufacture them. This is a look at what every sort of bearing is created of, how it truly is employed, and how a lot they expense. To discover the appropriate bearing for your software, it’s essential to select a quality lubricant. The resources utilised in bearings are established by their type and purposes. Picking the proper lubricant will prolong its existence, and protect your machine’s areas from harm and premature dress in.

Supplies used in bearings

Bearings are produced from a range of resources. Stainless steel is a widespread material utilised for the elements of bearings. It has a higher content of chromium and nickel. When exposed to oxygen, chromium reacts with it to kind chromium oxide, which supplies a passive movie. For greater temperatures, teflon and Viton are also used. These components provide exceptional corrosion resistance and are often desired by makers for their distinctive homes.
Stainless steel is yet another materials utilized in bearings. AISI 440C is a higher-carbon stainless steel generally utilized in rolling-contact bearings. It is broadly used in corrosive environments, especially in applications in which corrosion resistance is more essential than load ability. It can also be heat-handled and hardened to 60 HRC, but has reduced fatigue life than SAE 52100. Stainless metal bearings might carry a twenty-forty% value high quality, but their outstanding functionality is really worth the extra money.
Graphite and molybdenum disulfide are two of the most common materials utilized in bearings. While graphite is a well-known content in bearings, it has quite very poor corrosion resistance and is unsuitable for apps the place oil or grease is essential. Graphite-primarily based composite resources are yet another selection. They mix the positive aspects of both graphite and ceramic materials. A variety of proprietary supplies have been designed for high-temperature use, this sort of as graphite and MoS2.
Wood bearings have been about for centuries. The oldest ones utilized wooden and Lignum Vitae. These supplies had been light-weight, but they ended up extremely robust and durable. Wood bearings have been also lubricated with animal fats. For the duration of the 1700s, iron bearings have been a well-known selection. In 1839, Isaac Babbitt invented an alloy that contains tough metal crystals suspended in a softer steel. It is regarded as a steel matrix composite.

Apps of bearings

Bearings are utilized in many distinct industries and systems to assist facilitate rotation. The metal surfaces in the bearings assist the fat of the load, which drives the rotation of the unit. Not all loads use the identical quantity of drive to bearings, nonetheless. Thrust and radial hundreds act in distinctly distinct methods. To greater comprehend the various uses of bearings, let us examine the a variety of sorts of bearings. These functional units are important 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 factor distributes the load in excess of a greater spot. They are not, however, suited to dealing with thrust masses. Needle bearings, on the other hand, use tiny diameter cylinders and can fit into tighter areas. The benefits of these kinds of bearings are numerous, and numerous major producers are now leveraging the Industrial Net of Factors (IIoT) to build related intelligent bearings.
As a electricity technology industry, bearings enjoy an important part. From turbines to compressors, from turbines to pumps, bearings are important components of tools. In addition to bearings, these parts assist move the gear, so they can operate properly. Generally, these elements use ball bearings, though some roller bearings are employed as nicely. In addition to being successful and durable, these kinds of bearings also are likely to be built to meet stringent internal clearance requirements and cage layout specifications.
In addition to bearings for linear motion, bearings can also bear the bodyweight of a rotary element. Depending on the software, they can be developed to decrease friction amongst shifting elements. By constraining relative movement, bearings are employed to lessen friction within a given software. The very best-designed bearings reduce friction in a provided application. If you happen to be in the market for a new bearing, NRB Industrial Bearings Constrained is an outstanding source to begin your look for.

Sorts of bearings

The variety of bearings you select will have a important affect on the efficiency of your equipment. Using the right bearings can improve effectiveness, accuracy, and support intervals, and even reduce the cost of acquiring and functioning equipment. There are several distinct varieties of bearings to select from, like ball bearings and flexure bearings. Some varieties use a fluid to lubricate their surfaces, while others do not.
Plain bearings are the most typical kind of bearing, and are utilised for a variety of purposes. Their cylindrical design makes it possible for for a reasonably smooth motion. Typically manufactured of copper or other copper alloy, they have lower coefficients of friction and are commonly utilised in the design industry. Some types of plain bearings are also obtainable with a gudgeon pin, which connects a piston to a connecting rod in a diesel motor.
Magnetic bearings are the most recent type of bearing. They use permanent magnets to develop a magnetic area close to the shaft without requiring any electrical power. These are hard to layout, and are nevertheless in the early phases of development. Electromagnets, on the other hand, call for no electrical power but can carry out very high-precision positioning. They can be extremely durable and have a lengthy provider existence. They are also light-weight and simple to restore.
Yet another type of bearing is needle roller. These are manufactured of slim, prolonged, and slender cylinders that are used in a selection of apps. Their slender measurement is excellent for a place-constrained software, and their tiny profile makes it possible for them to suit in limited locations. These types of bearings are usually utilised in automotive programs, bar stools, and digital camera panning gadgets. They have many benefits above ball bearings, which includes the capability to take care of weighty axial hundreds.

Cost of bearings

A wide selection of factors have an effect on the price of aerospace bearings, like the bearing material and its volatility. Makers usually use high-quality metal for aircraft bearings, which are hugely affected by fluctuations in the metal cost. Federal government procedures also perform a component in the variation in trade price tag. The implementation of COVID-19 has modified the marketplace dynamics, creating an unsure outlook for offer and demand of aerospace bearings. New trade norms and transportation restrictions are predicted to hamper the development of this market.
Demand from customers for aerospace bearings is mostly driven by aircraft makers. In North The usa, plane producers must satisfy very large standards of excess weight, performance, and top quality. They also need to be lightweight and expense-successful. This has resulted in a rising value of aerospace bearings. The marketplace for aerospace bearings is predicted to expand at the highest CAGR above the subsequent number of many years, pushed by growing investments in defense and aerospace infrastructure across Asia-Pacific.
Hub assemblies are also expensive. A wheel hub will value amongst $four hundred and $500 for a single set of bearings. In addition to this, the velocity sensor will be incorporated. The average cost of wheel bearings is between $400 and $five hundred for a single side, which includes labor. But this price assortment is considerably lower if the bearing is a substitute of an entire wheel assembly. It is even now really worth noting that wheel hub bearings can be purchased individually for a decrease value.
Replacement of one or two wheel bearings will depend on the product and year of the vehicle. For a tiny car, a single rear wheel bearing can expense amongst $one hundred ninety and $225, while two entrance wheel hubs can price upwards of $1,000. Labor and areas rates will differ by place, and labor charges may possibly also be protected under some warranty plans. If you determine to have it done oneself, be certain to inquire numerous shops for estimates.

Inspection of bearings

To preserve bearing efficiency and stop mishaps, periodic inspections are vital. In addition to guaranteeing dependability, these inspections improve efficiency and efficiency. Standard servicing consists of disassembly inspection, replenishment of lubricant and checking procedure status. Right here are some common ways to carry out the necessary inspections. Preserve reading through to discover how to preserve bearings. Right after disassembly, you have to thoroughly clean the elements extensively. Make sure that the bearings are totally free of burrs, particles, and corrosion.
Ultrasound technologies is an outstanding tool for checking slow-pace bearings. Most ultrasound devices provide vast-ranging sensitivity and frequency tuning. Ultrasound can also be employed to monitor bearing audio. Ultra-gradual bearings are usually large and greased with substantial-viscosity lubricant. Crackling sounds point out deformity. You can also pay attention for irregular noise by plugging a vibration analyzer into the device. When the machine exhibits irregular sound, routine further inspections.
Ultrasonic inspection requires utilizing an ultrasound transducer to evaluate the amplitude of sound from a bearing. It is successful in early warnings of bearing failure and stops in excess of-lubrication. Ultrasound inspection of bearings is a cost-efficient answer for early analysis of bearing difficulties. In addition to being a dependable tool, ultrasonic tests is digital and effortless to apply. The pursuing are some of the advantages of ultrasonic bearing inspection.
Dynamic high quality analysis includes the use of a particular fixture for measuring bearing deformations underneath low shaft speed and light radial load. The measurement of the fixture influences the price of the deformations. A fixture ought to be sized between the diameter of the sensor and the roller to make certain optimum precision. The outer deformation signal is more sensitive with a greater sensor diameter. A vibration-acceleration sensor is employed for the distinction take a look at.

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