Precision Deep Groove Ball Bearings ( EMQ Bearings ) 6900 2RS
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 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
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
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
MR74-ZZ, MR106-ZZ, MR117-ZZ, 684-ZZ
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
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
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
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
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.
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
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 information please visit the WD Web site