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Double Row bearings are ideally suited to applications where carrying loads make a single row inadequate. Double Row bearings utilize two rows of balls back to back. They have deep groove raceways with a high degree of contact between the ball and raceways. Double Row bearings are capable of handling both radial and axial loads and are designed for applications where higher load carrying capacity is necessary. The Boca Bearing Company offers a full line of miniature standard and ceramic hybrid, doubel row bearings. 


Two-row, or double-row, bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings.

Bearing Number Bore Dia Outer DIa Width Size
EE285160/285228D+L DOUBLE-ROW BEARINGS 6307-ZZ 35x80x21 35 80
99600/99101D+L DOUBLE-ROW BEARINGS 98400/98788B 101.6x200x49.212 101,6 200
205KF3201 DOUBLE-ROW BEARINGS 6809 45x58x7 45 58
130KBE31+L DOUBLE-ROW BEARINGS 679 9x14x3 9 14
95500/95927D+L DOUBLE-ROW BEARINGS 678AZZ 8x12x3.5 8 12
273KH3951+K DOUBLE-ROW BEARINGS 672H 2x4x1.2 2 4
HM231149NA/HM231111D DOUBLE-ROW BEARINGS 6801ZZ 12x21x5 12 21
HR100KBE1805+L DOUBLE-ROW BEARINGS 6414N 70x180x42 70 180
300KBE030+L DOUBLE-ROW BEARINGS 673SSA 3x6x2.5 3 6
67983/67920D+L DOUBLE-ROW BEARINGS 679 9x14x3 9 14
130KDE43+L DOUBLE-ROW BEARINGS 6901-2RS 12x24x6 12 24
NA48390/48320D DOUBLE-ROW BEARINGS 6804-2RS 20x32x7 20 32

DOUBLE-ROW BEARINGS : A Complete Guide to Buying

What is deep groove ball bearing?

  • 1、Deep Groove Ball Bearing is a common type of bearings and it is used in several industries from heavy machinery to high precision apparatus. This type of 
  • 2、Browse Deep Groove Radial Ball Bearings in the Emerson Bearing catalog including 6000 Series Deep Groove Radial Ball Bearings,6200 Series Deep Groove 
  • 3、Deep groove ball bearings are the most commonly used type of bearing due to their ability to take radial as well as limited and axial. Deep groove ball bearings 
  • 4、Rolling bearings form the heart of all rotating machinery. This means it's vital to ensure that you're selecting
  • 5、Dec 16, 2014 — Deep groove ball bearings are among the most widely used type of bearing in the world. They can operate at high speeds and can carry radial 
  • 6、Single-row deep groove ball bearings. These bearings are very widely used. The raceway grooves on both the inner and outer rings have circular arcs of slightly 

Where are double row roller bearings used?

  • 1、These versatile bearings can contain single or multiple rows of rolling elements; multiple rows can significantly improve radial load capacity. Also, the use of ...4 topics include: Cylindrical roller bearings ⋅ Spherical roller bearings ⋅ Needle roller bearings ⋅ View full list
  • 2、MMB Bearings offers tapered roller bearings that are used in many applications such as automobile and truck front wheels. ISO 9001 Certified. Order today!
  • 3、Machined Type needle roller bearings are generally used with shafts without inner rings. 0.2µmRa or less shaft surface finish and HRC 58 to 64 shaft hardness ...
  • 4、SINGLE ROW RADIAL BALL BEARINGS are the most widely used bearings and ... SPHERICAL ROLLER THRUST BEARINGS are similar to double row spherical roller ...
  • 5、The most basic and widely used tapered bearing, the single-row type ... and one way axial load;double row taper roller bearing can bear radial and double ...
  • 6、Needle roller bearings can be single or double row units. The rolling elements are needle rollers. They are mostly used in applications which have small ...

What is a angular contact bearing?

  • 1、Angular Contact Ball Bearings with contact angles of 15° (Symbol C) and. 25° (Symbol A5) are primarily for high precision or high speed applications, and 
  • 2、LYC's angular ball bearings are also called angular contact radial thrust ball bearings. This type of bearing is particularly suitable for carrying combined loads 
  • 3、Due to having contact angles, the angular contact ball bearing is suitable for applications demanding high accuracy and high rotational speed and is capable of 
  • 4、Jump to Angular contact — Angular contact[edit]. An angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through 
  • 5、We keep a great choice of Angular Contact Ball Bearings. Single row, double row, some open, others with seals, metric, imperial and duplex ball bearings
  • 6、Best Sellers in Angular Contact Bearings · #1

What is a 4 point contact bearing?

  • 1、Products 1 - 20 of 313 — Four-point angular contact ball bearings are ideal for applications with limited axial space but which require axial load capabilities in ...
  • 2、Thin Section Four Point Contact Ball Bearing can support radial load, ... Both structures of the deep groove ball and the four-point contact enable the ...
  • 3、1. Slewing conveyor · 2. Welding manipulator · 3. Light and medium duty cranes (truck mounted crane, deck crane, aerial platform truck etc.) · 4. Different ...
  • 4、The X-Type, or 4-point contact, ball bearing is ideal for moment loading. X-Type bearings are designed with gothic arch raceways creating 4 contact points ...
  • 5、Product Introduction The inner ring of the Four Point Contact Ball Bearings is divided into two parts in the radial direction. Their design allows a bearing ...
  • 6、The invention discloses a three-point contact type ball bearing which comprises a bearing inner ring, a rolling body, and a bearing outer ring; ...

What are the advantages of double row ball bearings?

  • 1、Self-Aligning Ball Bearings include a double row of balls guided by a cage and double row inner ring raceway but have the special feature of a continuous 
  • 2、Chief advantages of the double-row type are rigidity, compactness and high capacity. The two rows of balls provide for bearings large radial capacity combined
  • 3、Double-row Spherical Roller bearings are a composition of radial & axial bearings. These bearings are mostly used to withstand very heavy loads & housing 
  • 4、Nov 17, 2015 — Advantages Of Deep Groove Ball Bearings • Can sustain radial, axial, ... Types Of Cylindrical Roller Bearings • Single or Double Row Bearings 
  • 5、Advantages and Benefits. UIPI advantages in slewing bearing: ○ First & Only API QMS Certified slewing bearing supplier in China. ○ Over 80% of our 
  • 6、the following major advantages: (1) Their starting ... their own individual advantages. ... Row. Double. Row. Ball. Bearings. Matched. Deep Groove. Ball Bearings

What is the function of the thrust bearing?

  • 1、Angular-contact thrust bearings; Axial bearings; Axial thrust bearings; Thrust-loaded bearings Thrust ... Function and Structure of Rolling Element Bearings
  • 2、TIMKEN® THRUST BEARING CATALOG 1. THRUST BEARING ... rating of a bearing is a function of material cleanliness as well as the internal bearing 
  • 3、A tilting pad thrust bearing is designed to be able to transfer a high axial load from a rotating or moving shaft, without losing power. This particular function helps to 
  • 4、During the design or refurbishment of a thrust bearing a question that occurs ... a function of temperature and assumes that the material on the bearing surface is 
  • 5、Altogether, advanced designs of tilting pad thrust bearings may involve ... For this purpose, the above-mentioned analysis steps are coupled by multiple nested
  • 6、The invention has for its purpose to provide a thrust bearing structure of the type described, wherein a liquid pressure is built up in the rotary member proper 

What is a double row angular contact bearing?

  • 1、Ball screw · Combined bearing · Double row cylindrical roller bearing · thrust angular contact ball bearing · Precision Machine Tool Spindle Bearings ...
  • 2、Description. Double-row angular-contact ball bearings accept axial loads in both directions and can be used singly, as dual bearing units.Bore Type: Cylindrical BoreOperating Temperature Range: -30 to 70 °C
  • 3、Nachi, 5210, Double Row Angular Contact Bearing, Open, 50mm Bore X 90mm Od X 30.2mm W . Usually ships in5 days. Buy it and Save at
  • 4、Double row angular contact ball bearings correspond in design to two single row angular contact ball bearings arranged back-to-back, but take up less axial ...
  • 5、Ricky Smith, ‎R. Keith Mobley · 2011 · ‎Technology & EngineeringSingle-Row Types of single-row ball bearings are radial nonfilling slot bearings, radial filling slot bearings, angular contact bearings, and ball thrust ...
  • 6、Kinex manufactures ball bearings with double row, with an angular contact. These bearings are suitable for use in aircraft and special engineering ...Configuration: double-row, angular-contactApplications: for the aeronautical industryRolling element: ball

Are double row angular contact bearings preloaded?

  • 1、Sep 3, 2020 — Axial preloading is usually used in the use of angular contact ball bearings, and there are two ways of preloading: positioning preloading and ...
  • 2、by T Xu · 2020 · Cited by 3 — Angular misalignment causes the fluctuation of contact load and contact angle ... Double row bearings were considered as an integrated unit, ...
  • 3、by Y Dong · 2017 · Cited by 17 — Proper preload of the angular contact ball bearing plays a large role in ... the double axial preload on the bearings. The tempera- ture rise at the bearing ...
  • 4、Koyo Bearings offers single and double row angular contact ball bearings, ... This loading (or preload) creates a line of contact (or contact angle) between ...
  • 5、According to the working conditions, the assembled bearings are divided into two types: preload (preloading load) and preload (preset clearance). The internal ...
  • 6、H Preload. 7. Accuracy Class. Running accuracy ISO Class 2. Other NSK Spec. 8. Arrangement. No symbol = One double row angular contact ball bearing.

How do spherical roller bearings work?

  • 1、Spherical roller bearings have two rows of rollers which run on a common ... Bearings should have a rated life of at least 200,000 h in the dryer section and ... Greases are grouped according to maximum working temperature at the bearing
  • 2、First I would like to give special thanks to my advisor, Dr. Steven Danyluk for all ... Energy level diagram of the work function of two metals in close proximity ... skew along an operating spherical roller bearing, and use the resulting phase 
  • 3、Dealing with very heavy radial and axial loads in applications prone to misalignment or shaft deflections? Meet the challenge with SKF spherical roller bearings, 
  • 4、Spherical roller bearings are self-aligning and can handle both radial and ... for the outer race and the complete profile of the roller both make a perfect sphere
  • 5、Even with this rugged working environment, Roller Bearings tend to have high ... This type of these bearing doesn't even need lubrication if they do not exceed 
  • 6、Spherical Roller Bearings, the raceway of outer ring is designed to have a spherical profile, whose centre coincides with the bearing's centre point

What is a double row bearing?

  • 1、Double Row Ball Slewing Bearing ... Features: SE series slewing drive is a fence type slewing reducer, worm gear drive can realize reverse self-locking. Wide ...
  • 2、Double row bearings offer compactness and rigidity and a large radial capacity combined with the availability of moderate thrust capacity in either direction, ...
  • 3、Double row bearings correspond in their structure to a pair of single row angular contact ball bearings in an O arrangement, but they are narrower to a ...
  • 4、by L Yang · 2018 · Cited by 21 — A comprehensive analytical procedure for double-row tapered roller bearing in the presence of combined external loads and angular misalignment is proposed.
  • 6、Install these bearings for use with combined radial and thrust loads. They are often used in spindle applications and can be combined with cylindrical ...