NEEDLE ROLLER BEARINGS
158Pages

NEEDLE ROLLER BEARINGS • General Bearings • NEEDLE ROLLER BEARINGS NEEDLE ROLLER BEARINGS This catalog has been printed on paper of recycled paper pulp using environmentally friendly soy ink. CAT. NO. B2003E Printed in Japan '08.10-1CDS

Technical section RS R RP RV V VS VP VPS WR WRS BTM BHTM BT BHT RNA49 RNA59 BKM NQ NQS BFNM RNA69 WV RE R...P UR...P VE VS...P BE Needle roller and cage assemblies WRP MKM MHKM MK MHK NA49 NA59 BM BHM B BH NQI NQIS Needle roller and cage assemblies for use with connecting rods YM Y MM M MH Drawn cup needle roller bearings Machined ring needle roller bearings NA69 NA49...UU Inner rings for needle roller bearings IRM Needle roller thrust bearings TV TP CM...M CM...RM CR...M CYM...M CYM...RM LF W CM...UUM CM...UURM CR...UUM CYM...UUM CYM...UURM WS TPW...F TPWS...FF TPWWS...FF TVK... TPK......

NEEDLE ROLLER BEARINGS Value & Technology

Publication of New Needle Roller Bearing Catalog We are pleased to offer our new Koyo Needle Roller Bearing catalog to you. Needle roller bearings are being used in a wide range of machinery, such as automobiles, motor cycles, electric machines, aerospace equipment, machine tools, office and hydraulic equipment, and other general industrial machinery. In every field, new products are developed for saving of energy and conservation of environment, and needle roller bearings play a part in it. This thoroughly-revised catalogue includes the latest bearing types, models, and technical...

NEEDLE ROLLER BEARINGS Contents Technical section 1 Characteristics and types of needle roller bearings 8 Lubrication and sealing devices 8.1 Purpose of lubrication ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 21 1.1 Characteristics of needle roller bearings ⋅⋅⋅ 7 1.2 Characteristics of varied needle roller bearing types ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 7 1.3 Types of needle roller bearing ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 8 2 Outline of bearing selection ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 10 3 Bearing service life and load rating 3.1 Bearing service life ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 11 8.2 Lubricant...

Other products · Example of use · Supplementary tables Specification tables 11 Specification tables of needle roller bearings 12 Other products 1 Needle roller and cage assemblies ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Single-row ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 40 44 Double-row ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 58 Needle roller and cage assemblies for use with connecting rods ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Needle roller and cage assemblies for high-rotation speed planetary gears ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 182 Low torque needle roller and cage thrust assemblies ⋅⋅⋅ 183 Rocker Roller...

1 Characteristics and types of needle roller bearings 1.1 Characteristics of needle roller bearings 1 Large Load Rating As compared with general ball and roller bearings, the Koyo needle roller bearings can ensure a large load rating in a small space, and can be used without inner rings or needle roller and cage assemblies so that the whole of the machine can be reduced in size and weight, thus making the design around the bearing more compact. 2 Small Cross-sectional Height Due to its small cross-sectional height, the bearing can fit in nearly the same space as the conventional plain...

1 Characteristics and types of needle roller bearings 1.3 Types of needle roller bearing Needle roller and cage assemblies For general use For use with connecting rods *For use at large end (for crank pin) Drawn cup needle roller bearings With cage Full complement type *Open ends type *Open ends type RS, R, RP BTM, BHTM BM, BHM BT, BHT BE B, BH RV, V, VS VE, VS...P YM Y VP, VPS Basic type *For use at small end (for piston pin) *Closed end type *Closed end type WR, WRS MKM, MHKM MM MK, MHK RE M, MH R...P WRP UR...P WV ( With synthetic resin ( With RFN ( With synthetic resin ( Miniature...

Machined ring needle roller bearings Without inner ring With inner ring Needle roller thrust bearings *Stud type (cam followers) *Stud type (cam followers) *Needle roller and cage assembly RNA49 NA49 RNA59 NA59 Track rollers Full complement type With cage CM...M TV KM...M CR...M TP *Race NQ NQI NQS NQIS CM...RM *Yoke type (roller followers) RNA69 NA69 *Yoke type (roller followers) CYM...M W KM...RM CXM...M CYM...RM CXM...RM WS *Combination type (separable type) TPW...F TPWS...FF TPWWS...FF ( With locating snap ring (outer ring) ( With pin hole (outer ring) ( With locating snap ring (outer...

2 Outline of bearing selection 2 Outline of bearing selection Currently, as design of needle roller bearings has be- come diversified, their application range is being increas- ingly extended. In order to select the most suitable bear- ings for an application, it is necessary to conduct a comprehensive study on both bearings and the equipment in which the bearings will be installed, including operating conditions, the performance required of the bearings, speci- fications of the other components to be installed along with the bearings, marketability, and cost performance, etc. In selecting...