UBC Bearing of America, Inc. is a producer of high grade bearing components, as well as complete ball and roller bearings.

The Samick Precision Ind,Co.,Ltd as the enterprise which manufactures the Factory Automation related production with specialty, producing and selling the motion of straight line bearing which it
completes with form technical development

Also, the Samick Precision Ind, Co.,Ltd it is a concentrating width of the headquarters of a party bein seclected in the world-wide first class goods, tu is raising the name of the republic of
Korea

Wafangdian Bearing Group Corporation, short for ZWZ, was initially established in 1938, restructured to be a exclusively State-Owned Company in 1995 and came to B share market as the founder
member in 1997. Bing the birthplace of China bearing industry, it was known as the hometown and cradle of this field. It comprehensively ranked No. 1 in China bearing industry and No. 13 in the
world. It is listed in Top 500 Enterprise in China manufacture industry and also the Top 500 Power Enterprise in China machinery. The brand of ZWZ is the No. 1 bearing brand in China.
The dominant products of ZWZ are Industrial bearingC.V.Joint and Precision Ball Screws which widely applies in railway, automobile, metallurgy, mining, general machinery, petrol, irrigation works,
electric power, machine tools, chemical industry, IT, industrial robot, aviation, spaceflight, etc,and are sold to more than ten thousands of domestic customers and more than 80 countries and
areas

Luoyang LYC bearing Co.,LTD. Provides not only rolling bearings with standard structure and dimension, but also produces the bearings designed according to the requirement of the
buyers

Approved by Harbin Peoples Government, Harbin Manufacturing Co., LTD. was established on 28 August,2007. After sorting out corportate assets effectively, we are now owning advanced technology,
superior technological equipment, perfect marketing system and famous HRB brand.

After half of century development, we have built comprehensive products system including ten main category, more than 7000 varieties bearings. Aviation and spaceflight bearings, carrige bearings,
precision machine tool bearings and mine and metallurgy bearings are all our leading products. We have got the ISO9001-2000, GJB9001A-2001 and TS16949-2002 Quality Management System Certification and
built a sound  and scientific Quality Assurance System. Our HRB bearings gains all kinds of honours and laurels, such as Chinese Brand Name, The Most Competetive Brand , the privilege of
exemption from export inspection.

We hold natinal leverl technology center, an experienced work team and the best research capability in China. We have built cooperative relationship with some research institutions like
Harbin polytechnical university, and researched and developed many national level key projects, particularly, we have provide sets sorted with Shenzhou Five, Shenzhou Six and Shenzhou Seven
manned spacecrafts, Changzheng F carrier rocket, and Change I satellite. We are  the manufacturer appointed by Ministry of Rail ways for producing the railway Speed-Raise Coaches beaings which
was developed by us. In addition, we are the first company to research and develop YRT series precision numerical control machince tool spindle bearings and realize these bearings made at
home. We breake through in many the technology fields such as extraordinary high or low temperature,  antisepsis and antirust , and high speed and wear-resistant. Our five main
categories,  more than 600 kinds of products have achcieve the Excellent Product Prize and Award for Science and Technology Progress in province and city,  and make great
contribution to national defense and equipment manufacturing industry.

With the requirement of the outline for government manufacuring industry Eleventh Five-year, we buy 620 thousand square meters land in Hulanlimin economy development district in Harbin and
plan to invest 2.1 billion RMB to build a moden bearings industrial park within 3-5 years through techonology development and new projects execution. We try to achieve 56million sets producing
capability and 3 billion RMB sales income by the following methods:

Consolidate and develop the advantages on products including aviation and aircraft bearings, precision machine tool bearings, carriage bearings, mine and metallurgy bearings;

Adjust and increase the level of  several products, such as home appliance mute bearings, industrical electrical machine bearings, auto tapered roller bearings and so on.

Emphasize on developing new products, such as wind power generation bearings, heavy numerical control precision bearings,
high speed carriage bearings.

We profoundly know that to develop hiself the company should hold the national improtant strategy on equipment manufacturing industry firmly, and stick to taking the road of new
industrialisation steadily,  we are sure we will be a competitive modern enterprise in the world.

Deep Groove Ball Bearings are the most commonly used rolling bearings. They are simply in structure and easy to apply. They mainly
accommodate the radial loads. When the radial clearance is increased, they have the same performacne with the angular contact ball bearings in a certain degree and can carry the combined loads. In
the high speed application where Thrust ball bearings are not suitable, they can used for carrying pure axial loads. Compared with other
bearings with same dimension, these bearings have lower friction, higher limited speed but lower impact resistance and they are not suitable for carrying heavy loads.

After mounted, Deep Groove Ball Bearings will restrict the shaft or houing from axial displacement in two directions within the range
of clearance, so they can make axial aligning in two directons, that is to say, these bearing are self-alighing. Even when the amount of inclination shaft relative to shaft is between 2 10, they are
still in normal operation, but that may affect their length of service life.

The cages of the deep groove ball bearing are almost steel sheet stamping ribbon retainer. Heavy bearings usually apply auto metal solid cage.

Deep Groove Ball Bearings can easily achieve the maior manufacturing accuracy in relation to other bearings, so they can manufactured
in large quantities with lower cast. Besides the open basic design, there are many other varieties.

Open Deep Groove Ball Bearings

Open deep groove ball bearings apply to high or even extremely high operation. They are durable and require litte maitenance.  They have low
friction, high limited speed, large dimension range and various conformation. These bearings are used on the prcision instruments, low noise electric machine, auto, autobike and other machinery
industries. They mainly carry radial loads and can carry a certain amount of axial loads.

Deep Groove Ball Bearings with seal

Standard deep groove ball bearings with seal comprise contact seal bearings, RS design(with seal on one side) and 2RS design (with seal on both
sides), and non-contact seal bearings, RZ design(with seal on one side) and 2RZ design (with seal on both sides).

Seal bearings have the same performance, grease and use with the bearings with shield. There are still some differences between the two. The bearings with shield have larger clearance between the
shield and inner ring. Non-contact seal bearings only have minor clearance between seal lip and inner ring, but contact one have no, the later one have great seal effectiveness, but friction increase
somewhat.

In the application where there is requirement on low noise, the Deep Groove Ball Bearings with small dimention in 60 and 62 series are
used. Any bearings (including open basic design, with seal or shield)with low nosise are all available, just bring the requirement on low nosise forward in the order.

In China, JB(Machinery Industry Standard) sets the limit of vibration into V1, V2,V3 level and low, medium, high Frequency Range. SKF also provide ultra-low noise bearings, whose code names are
suffixed by QE5.

Deep Groove Ball Bearings with shield

Standard deep groove ball bearings with shield have Z design and 2Z design. Zdesign have shield on one side, 2Z design have shield on both side.
These bearings are used in the application where it is unconvenient to lubricate separately, install the lubricant passage way or to inspect the operation. These bearings have been filled with
lithium base grease with rust-inhibiting and lubricating double service before leaving factory. The filling capacity of the grease is commonly the 1/4~1/3 of the usable inner space of the bearings,
and the capacity can also be adjusted according to the requirement of buyers. The grease filled in the bearings can guarantee the bearings operate in -40~+120 work condition. If there are still more
requirement on bearings, other grease with different performance or trademark will be used in accordance with specific conditions. The grease are durable, no grease need to add during
application.

These bearings are mainly used in medium-size and minitype generator, both sides of electromotor rotor, auto, tractor, air condition and fan, and also in the application where there are special
requirement on noise vibration.

Deep Groove Ball Bearings with snap ring groove in the outer ring

There is rectangle groove with snap ring in the outer ring. The snap ring will simplify the axial tightening of the bearing in the housing bore, to lessen the axial dimension of the assembly,
eventually fix the bearings in the axial direction.