Cylindrical Roller Bearings EM Series

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1 Cylindical Rolle Beaings E Seies NSK has developed a highe load-caying capacity machined cage with low noise and supeio cage stength. Ou E seies is a standad cylindical olle beaing that facilitates intechangeability acoss the globe, while offeing bette pefomance fo evey application.

Cylindical Rolle Beaing E Seies A newly developed standaeaing Advantages of a olle-guided cage Touble-fee packing of gease Quiete opeation Impoved oil flow Geate accuacy of the olle guidance achieved

machined cage type (Riveted-type, two-piece, bass, ing-guided cage) High load-caying E type A1 type (One-piece, bass, ing-guided cage) You can now take advantage of NSK s newly developed cylindical

NSK has achieved a new design involving even newe concepts, while maintaining excellence in function and sevice life. Ou E Seies can meet you high load-caying capacity needs fo the new ea.

2 Cylindical Rolle Beaing E Seies A newly developed standaeaing Advantages of a olle-guided cage Touble-fee packing of gease Quiete opeation Impoved oil flow Geate accuacy of the olle guidance achieved though special pocket pofiling Lage pocket cone adii elieve stess concentations on the cage NSK has been supplying a standad cage fo single ow cylindical olle beaings as indicated hee: Standad machined cage type (Riveted-type, two-piece, bass, ing-guided cage) High load-caying E type A1 type (One-piece, bass, ing-guided cage) You can now take advantage of NSK s newly developed cylindical olle beaing, the E seies, which combines the stengths and technologies of both pevious cages into a one-piece bass olle-guided cage. NSK has achieved a new design involving even newe concepts, while maintaining excellence in function and sevice life. Ou E Seies can meet you high load-caying capacity needs fo the new ea. Design concept of ou newly developed standaeaing the E seies E Seies Beaing Intechange Guide Intenal design compaison of the seies and E seies Seies (Conventional type) Oute ing E Seies (Newly developed type) Rolles Cage Inne ing R A 1A 1 L1 FY Y NSK E Seies EB EBR EC ECA Rivets High load ating Geate numbe of lage olles aximum igidity and low noise One-piece cage povides geate accuacy Rolle-guided cage achieves lowe tempeatue unning and quiete opeation Uppe: cage symbols of NSK Lowe: cage symbols of othe manufactues (Refeence use only) High stength and wea esistant cage Well-balanced one-piece design EA1 EP ED EG1 1 2

High-Stength Cage Low Noise Results of FE analysis Noise measuement test esults E Seies ajo competito s Seies easuing conditions 80 Beaing numbe: NU308 ethod: JIS B1548 Radial load: 392 N Speed: 1

easuing load: 392 N Tests confim that stess levels ae educey 50% fo the NSK E seies cage compaed to majo competito s seies.

3 High-Stength Cage Low Noise Results of FE analysis Noise measuement test esults E Seies ajo competito s Seies easuing conditions 80 Beaing numbe: NU308 ethod: JIS B1548 Radial load: 392 N Speed: to min 1 Noise level, db 70 ajo competito s seies icophone position and measuing load icophone diaphagm E aximum stess: 110 Pa aximum stess: 210 Pa Speed, min 1 easuing load: 392 N Tests confim that stess levels ae educey 50% fo the NSK E seies cage compaed to majo competito s seies. The E seies exhibited noise levels 5 db lowe than competitive two-piece cage designs. Cage stength test esults Highe Load Rating Numbe of oscillations until beakage E Numbe of oscillations until ivets loosen No beakage and test discontinued Test conditions Test beaing: NU308 Oscillating angle: 30 Radial load: 7.4 kn Lubication method: oil bath 30 Basic dynamic load ating, N E Basic dynamic load ating, N E Oil level Beaing numbe Beaing numbe Test esults show that the NSK E seies has geate cage stength pefomance than that of conventional -type cages. The E seies benefits fom a 30% highe load-caying capacity than the conventional seies. 3 4

4 E Seies Beaing Table B a a b D d D a d c D a d a d d Bounday Dimensions Basic Load Ratings Limiting Speeds d D B (mm) 1 C [N] C o Gease [min 1 ] Oil min min The following ae also available: 1. N and NF type beaings 2. Cages with an outside diamete of less than 650 mm Beaing Numbes Abutment and Fillet Dimensions Pemissible ass (mm) Axial (kg) d a d c d d D a a b ovement S min min max min min max max max (mm) appox NU205E NJ NUP NU305E NJ NUP NU206E NJ NUP NU306E NJ NUP NU207E NJ NUP NU307E NJ NUP NU208E NJ NUP NU308E NJ NUP NU209E NJ NUP NU309E NJ NUP NU210E NJ NUP NU310E NJ NUP NU211E NJ NUP NU311E NJ NUP NU212E NJ NUP NU312E NJ NUP NU213E NJ NUP NU313E NJ NUP NU214E NJ NUP NU314E NJ NUP NU215E NJ NUP NU315E NJ NUP NU216E NJ NUP NU316E NJ NUP NU217E NJ NUP NU317E NJ NUP Please contact NSK fo details. 5 6

5 E Seies Beaing Table B a a b D d D a d c D a d a d d Bounday Dimensions Basic Load Ratings Limiting Speeds d D B (mm) 1 C [N] C o Gease [min 1 ] Oil min min The following ae also available: 1. N and NF type beaings 2. Cages with an outside diamete of less than 650 mm Beaing Numbes Abutment and Fillet Dimensions Pemissible ass (mm) Axial (kg) d a d c d d D a a b ovement S min min max min min max max max (mm) appox NU218E NJ NUP NU318E NJ NUP NU219E NJ NUP NU319E NJ NUP NU220E NJ NUP NU320E NJ NUP NU221E NJ NUP NU321E NJ NUP NU222E NJ NUP NU2222E NJ NUP NU322E NJ NUP NU224E NJ NUP NU2224E NJ NUP NU324E NJ NUP NU2324E NJ NUP NU226E NJ NUP NU2226E NJ NUP NU326E NJ NUP NU2326E NJ NUP NU228E NJ NUP NU2228E NJ NUP NU328E NJ NUP NU2328E NJ NUP NU230E NJ NUP NU2230E NJ NUP NU330E NJ NUP NU2330E NJ NUP Please contact NSK fo details. 7 8

6 E Seies Beaing Table B a a b D d D a d c D a d a d d Bounday Dimensions Basic Load Ratings Limiting Speeds d D B (mm) 1 C [N] C o Gease [min 1 ] Oil min min The following ae also available: 1. N and NF type beaings 2. Cages with an outside diamete of less than 650 mm Beaing Numbes Abutment and Fillet Dimensions Pemissible ass (mm) Axial (kg) d a d c d d D a a b ovement S min min max min min max max max (mm) appox NU232E NJ NUP NU2232E NJ NUP NU332E NJ NUP NU2332E NJ NUP NU234E NJ NUP NU2234E NJ NUP NU334E NJ NUP NU2334E NJ NUP NU236E NJ NUP NU2236E NJ NUP NU336E NJ NUP NU2336E NJ NUP NU238E NJ NUP NU2238E NJ NUP NU338E NJ NUP NU2338E NJ NUP NU240E NJ NUP NU2240E NJ NUP NU340E NJ NUP NU2340E NJ NUP Please contact NSK fo details. 9 10

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Cylindrical Roller Bearings EM Series

Cylindrical Roller Bearings EM Series Cylindical Rolle Beaings Seies NSK has developed a highe load-caying capacity machined cage with low noise and supeio cage stength. Ou seies is a standad cylindical olle beaing that facilitates intechangeability