WD precision deep groove ball bearings are designed for high precision, low noise, small vibration, high reliability and long life. They are mainly used in various types of electric motors. They are also known as EMQ (Electric Motor Quality) bearings.

EMQ bearings are widely used in household appliances, toys, electric power tools, car motors and other fields. With optimal design, high reliability heat treatment, precision manufacturing processes and high-grade grease, these products perform better on reliability, vibration and noise levels than standard products making them more suitable for electric motor applications. These products can also be applied to most gearbox applications as well.

WD precision deep groove ball bearings include a variety of shields and seals to meet the many different requirements customers demand. For detailed specification, please feel free to contact WD.

WD Miniature Precision Deep Groove Ball Bearings

WD Precision Deep Groove Ball Bearings

WD precision deep groove ball bearings are good quality products with excellent performance. Because of their high precision, high rotating speed, high reliability, low friction and low noise, they are widely used in areas of machine tools, measuring instruments, office machinery, household appliances, various types of electric motors, industrial automation control, etc.

At the same time, WD can design and manufacture precision deep groove ball bearings according to your requirements with special functions such as mute, special sealing, electric insulation, ultra-high speed, high/low temperature resistance and etc. And WD will sincerely provide superior application service and professional technical advice to customers.

WD precision deep groove ball bearings applied in an electric motor application
This customer is one of the largest electric motor and pump manufacturers in the Middle East. They have the largest electric motor R&D center in the area and have close affiliations with a number of prestigious universities. They have more than 50 main products which are used in industrial and household applications such as air conditioners, washing machines, water cooling pumps, various oil/gas heaters to name a few.

WD products and service advantages:
1）Correct selection: Customer knew little about bearings and as a result could not select properly the products at the very beginning of the design stage. WD helped the customer select the correct products successfully. WD also provided basic bearing training which helped the customer know more about bearings and accelerated new product designs and risk reduction on future products.
2）Cost reduction: Customer was using international renowned brands and paying high prices as well. The low noise EMQ bearings WD provided fully met the customer’s operating requirements and replaced the international renowned brands which resulted in a cost savings.
3）A long-term relationship resulted in a win-win situation: During the nine years of cooperation with the customer, WD has maintained stable quality with no quality complaints from the customer. WD has become the customer’s main bearing supplier because of the trust it has earned over the many years.

WD precision deep groove ball bearings applied in automatic control application
Product number:
        MR74-ZZ, MR106-ZZ, MR117-ZZ, 684-ZZ

Application conditions:
1)These bearings are used on an encoder with medium to low rotating speeds and a clean operating environment. Their needs included small starting torque, low noise and should not leak grease. The customer previously used P5 and Z3 grade products of a well known Japanese firm. Though the encoder is small, the bearing's cost occupied a large portion of the total cost. After analyzing, WD suggested and provided Z2 products without abnormal noise to meet customer's operational requirements, which significantly reduced the cost.
2)WD improved the design of the grease seals to satisfy the anti-dust, anti-leak requirements of the application. This helped to strengthen the relationship between WD and the customer and helped to achieve a win-win situation. WD Brand won this customer's trust.
WD product advantages:
The wall thickness of this kind of product is the thinnest in miniature ball bearings. They have a high requirement on the production process. Very few well-known companies can produce this type of bearing while selling at twice WD's price. After the customer started using WD products, the performance fully met their requirements as well as reducing cost. The customer realized very good quality at a competitive price.

WD precision deep groove ball bearings applied in household appliance area
Product number:
        6200-2RS

Application condition:
The bearing is used in the portable radiator. The highest rotating speed is 1500rpm under the high humidity condition. The heat resistance class of the electric motor is thermal class B (130 ^oC), and the load on the shaft should be below 1/8Hp which is very light load.
Type selection:
1) Select and use Z3V3 to meet the requirement of low noise which used as household appliance.
2) Select and use C0 clearance to meet the requirement of resistance to heat class and operation temperature.
Correct selection, high quality products, professional service and high cost performance products create more values for customers.

Remarks: The precision deep groove ball bearings always use C0 clearance if the rotating speed is below 3500 rpm, while high speed electric motor should use larger clearance.

Remarks:
        1) Material of the shields is always SPCC.
        2) Material of seals is always NBR.

The grease used on precision deep groove ball bearings, which is a kind of special thickening high temperature resistance synthetic oil mixed with addictive of anti-wear, anti-oxidation, anti-rusting, is a long-life abrasion resistance grease. The high load and antirust grease is designed to be applied in elevator tractor bearings and guide rail which have high requirement. Nowadays, it is superlative and used most widely on electric motor equipments. When the temperature is under -18^oC, it will not be hardened and while the temperature is high above 260~300^oC, it will not melt to liquid, which can help to maintain the long-life of the bearings.

Suitable temperature range: -18~+260^oC, the highest intermittent temperature could reach 300^oC. There are also greases which can be used in low temperature and quiet mode conditions.

More information can be viewed on website:
http://www.wd-bearing.com/wd_bearings_TECHNICAL_REFERENCE_d_806.htm

There are two types of packaging for precision deep groove ball bearings: commercial packaging and industrial packaging.

Commercial packaging: a single bearing will be first packed in a plastic bag and then put into a single paper box, finally into a carton.

Industrial packaging: our products are economically and durably packed so that they are suitable for long-distance transportation. For ID’s below 30 mm, bearings will be packed in tubes, cartons and then pallets. For ID’s above 30 mm, bearings will be packed in rolls, cartons and then pallets.

More package pictures can be viewed on website:
http://www.wd-bearing.com/wd_bearings_consolidate_package.htm