|| JTEKT Koyo Ball & Roller Bearings || Ball & Roller Bearings Ball & Roller Bearings Ball & Roller Bearings CAT. NO. B 2 0 01 E - 4 Printed i n Japa n '12. 0 7 - 3 CDS ('06 . 1) CAT. NO. B2001E-4 CAT. NO. B 2 0 01 E - 4

1 Structures and types ⋅⋅⋅⋅ A 1 4 Selection of arrangement ⋅⋅⋅⋅⋅⋅⋅⋅ A 20 7 Tolerances ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 52 10 Internal ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 93 clearance 13 Materials ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 122 2 Outline of selection ⋅⋅⋅⋅⋅⋅⋅ A 14 5 Selection of dimensions ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 24 8 Limiting speed ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 78 11 Preload ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 106 14 Shaft and housing design ⋅⋅⋅⋅⋅⋅⋅⋅ A 125 3 Selection of type ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 16 Boundary dimensions ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 46 and bearing numbers 9 Fits ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ A 80 12 Lubrication ⋅⋅⋅⋅⋅⋅⋅⋅ A 111 15 Handling ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅...

BALL & ROLLER BEARINGS CAT. NO. B2001E-4

Publication of Rolling Bearing Catalog Today’s technology-based society, in order to utilize the earth’s limited resources effectively and protect the environment, must strive to develop new technologies and alternate energy sources, and in that connection it continues to pursue new targets in various fields. To achieve such targets, technically advanced and highly functional rolling bearings with significantly greater compactness, lighter weight, longer life and lower friction as well as higher reliability during use in special environments are sought. This new-edition catalog is based on the...

1. Rolling bearing structures and types 1-1 Structure 2) Rolling element Rolling elements may be either balls or rollers. Many types of bearings with various shapes of rollers are available. Ball Cylindrical roller (LW ≤ 3 DW)* Rolling bearings (bearings hereinafter) normally comprise bearing rings, rolling elements and a cage. (see Fig. 1-1) Rolling elements are arranged between inner and outer rings with a cage, which retains the rolling elements in correct relative position, so they do not touch one another. With this structure, a smooth rolling motion is realized during operation. Bearings...

3 !• Rolling bearing structures and types \ ball bearing , Radial bearing -Deep groove ball bearing -Angular contact ball bearing ball bearing ball bearing Single-row Matched pair Radial ) roller bearing roller bearing Rolling bearing roller bearing roller bearing Single-row Double-row Single-row Double-row Single-row Double-row ball bearing Thrust bearing ball bearing -Angular contact ball bearing Single [with aligning direction seat race Double [with aligning" direction seat races roller bearing -Cylindrical roller thrust bearing -Needle roller thrust bearing -Tapered roller thrust bearing...

1. Rolling bearing structures and types Four-point contact ball bearings Table 1-4 One-piece type Two-piece inner ring Two-piece outer ring Self-aligning ball bearings Cylindrical bore 6200BI 6300BI 2RS 120, 130 11200, 11300 ⋅⋅⋅ 1200, 1300 extended inner ring type 2200, 2300 (6200BO) (6300BO) ■ Radial load and axial load in both directions can be accommodated. 2200 2RS 2300 2RS ■ Spherical outer ring raceway allows selfalignment, accommodating shaft or housing deflection and misaligned mounting conditions. ■ A four-point contact ball bearing can substitute for a face-to-face or back-to-back arrangement...

1. Rolling bearing structures and types Table 1-6 Machined ring needle roller bearings Table 1-7 Single-row Double-row Tapered roller bearings Single-row Double-row Flanged type With inner ring Without inner ring Sealed With inner ring Without inner ring NA4900 NA5900 (NQI, NQIS) RNA4900 RNA5900 (NQ, NQS) NA4900UU − NA6900 RNA6900 ■ In spite of their basic structure, which is the same as that of NU type cylindrical roller bearings, bearings with minimum ring sections offer space savings and greater resistance to radial load, by using needle rollers. ■ Bearings with no inner rings function using...

1. Rolling bearing structures and types Table 1-8 Spherical roller bearings Table 1-9 Cylindrical bore Convex asymmetrical roller type Tapered bore Convex symmetrical roller type R, RR RH, RHR ■ This type can accommodate radial load and axial load in both directions, which makes it especially suitable for applications in which heavy load or impact load is applied. With spherical back face Double direction With aligning seat race With flat back faces Convex symmetrical roller With aligning seat races ■ The tapered bore type can be easily mounted/ dismounted by using an adapter or withdrawal sleeve....

2. Outline of bearing selection bearings, specifications of the other components to be installed along with the bearings, marketability, and cost performance, etc. In selecting bearings, since the shaft diameter is usually determined beforehand, the prospective bearing type is chosen based upon installation space, intended arrangement, and according to the bore diameter required. Currently, as bearing design has become diversified, their application range is being increasingly extended. In order to select the most suitable bearings for an application, it is necessary to conduct a comprehensive...