Ball and Roller Bearings
407Pages

Ball and Roller Bearings CAT.No.2203/E

Commentary NTN new generation bearings (ULTAGE series) Deep groove ball bearings Miniature and small size ball bearings Angular contact ball bearings Self-aligning ball bearings Cylindrical roller bearings Tapered roller bearings Spherical roller bearings Thrust bearings Ball and roller bearings Special application bearings Rolling bearing accessories Needle roller bearings Bearing units Plummer blocks Introduction of catalogs and technical revi

NTN “Ball and Roller Bearings Catalog” Issue of CAT.No.2203/E A rolling bearing is an important mechanical element that is used in various machines. Rolling bearings are required to have a long operating life, be small/lightweight, fast, and support special environments. Thus, the performance requirements are becoming more sophisticated and diversified. In particular, technology for enhancing the performance of bearing has been required in recent years. To meet these needs, NTN is performing research and development to enhance the performance of the entire machines. The new general catalog...

Ball and Roller Bearings The CAD data of products is available on the NTN website. See our website for details.

TECHNICAL EXPLANATION CONTENTS 1. Classification and characteristics of 3.5 Machine applications and requisite life - Ia-27 3.7 Misalignment angle (installation error) and life - Ia-29 3.12 Review of basic dynamic load ratings - Ia-33 6.1 Dimensional and rotational accuracy - Ia-54 6.5 Geometrical product specifications (GPS) - Ia-73 9.2 Low-speed rotation and rapid 10. Friction and temperature rise a-109 10.1 Friction - Ia-109 12. External bearing sealing devices - Ia-124 13.4 Periphery of bearing (shaft, housing) - Ia-132 13.5 NTN bearings with prolonged life -■ A-132 13.6 Bearing fatigue...

●Classification and Characteristics of Rolling Bearings 1. lassification and characteristics of rolling bearings C 1.2 Classification 1.1 Structure Most rolling bearings consist of rings with a raceway (inner ring and outer ring), rolling elements (either balls or rollers) and a cage as shown in Fig. 1.1 (Figs. A to H). The cage separates the rolling elements at regular intervals, holds them in place within the inner and outer raceways, and allows them to rotate freely. Raceway (inner ring and outer ring) or raceway washer1) (shaft or housing) The surface on which rolling elements roll is...

●Classification and Characteristics of Rolling Bearings Deep groove ball bearings ················ B- 17 Angular contact ball bearings 1) ········ B- 57 Four-row tapered roller bearings ··································· C- 36 Duplex angular contact ball ··············· B- 57 bearings 1) Radial ball bearings Four-row cylindrical roller bearings ······························· C- 18 Ultra-thin section type ball bearings ····························· C- 58 Four-point contact ball bearings ······ B- 58 Ball bearings SL type cylindrical roller bearings ·································· C- 66...

•Classification and Characteristics of Rolling Bearings NTN •Classification and Characteristics of Rolling Bearings NTN 1.3 Characteristics 1.3.1 Characteristics of rolling bearings Rolling bearings come in many shapes and varieties, each with its own distinctive features. However, when compared with sliding bearings, rolling bearings all have the following advantages: (1) The starting friction coefficient is lower and there is little difference between this and the dynamic friction coefficient. (2) They are internationally standardized, interchangeable and readily obtainable. (3) They are...

●Classification and Characteristics of Rolling Bearings Table 1.3 Contact angle and symbol Angular contact ball bearing The line that unites the point of contact of the inner ring, ball and outer ring runs at a certain angle (contact angle) in the radial direction. Angular contact ball bearings are generally designed with three contact angles. (Refer to Table 1.3) Angular contact ball bearings can support an axial load, but cannot be used by themselves because of the contact angle. They must instead be used in pairs or in combination. (Refer to Table 1.5) Angular contact ball bearings...

Spherical roller bearing In addition to the types shown in Table 1.8 below, there are various other types of thrust bearings for special applications. Table 1.8 Types of thrust bearings Type Single direction thrust ball bearing Needle roller thrust bearings AXK type Bearing unit Needle roller bearings use needle rollers as rolling elements. The needle rollers are a maximum of 6 mm in diameter and are 3 to 10 times as long as they are in diameter (JIS B1506 rolling bearings roller). Because the bearings use needle rollers as rolling elements, the cross-section is thin, but they have a high...