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rating life at 90% reliability for the following cylindrical roller bearing and conditions. Fr 5.05 kN Fa 3.12 kN Bearing: NU 1010 ECP

rating life at 90% reliability for the following cylindrical roller bearing and conditions. Fr 5.05 kN Fa 3.12 kN Bearing: NU 1010 ECP

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Calculate the basic rating life at 90% reliability for the following cylindrical roller bearing and conditions.
Fr 5.05 kN
Fa 3.12 kN
Bearing: NU 1010 ECP (on pp 522 in the SKF catalogue)
Clearance: Normal

Give the answer in millions of revolutions.

Principal dimensions Basic load ratings Designations Bearing with standard cage Fatigue Speed ratings Limiting speed Mass dynamic static load limit Reference Alternative speed standard cage1) d D B Co Pu kN kN r/min kg m 45 cont. 100 100 100 25 36 36 112 160 160 100 153 153 12,9 20 20 7 500 7 500 7 500 8 500 8 500 8 500 0,93 1,3 1,35 • NUP 309 ECP • NU 2309 ECP • NJ 2309 ECP J, M, ML, PH ML ML 6.1 100 120 120 36 29 29 160 106 106 153 102 102 20 13,4 13,4 7 500 6 700 6 700 8 500 7 500 7 500 1,35 1,65 1,65 • NUP 2309 ECP • NJ 409 • NU 409 ML • NU 1010 ECP • NU 210 ECP N 210 ECP 50 80 90 90 16 20 20 46,8 73,5 73,5 56 69,5 69,5 6,7 8,8 8,8 9 500 8 500 8 500 9 500 9 000 9 000 0,27 0,47 0,48 J, M, ML, PH 90 90 90 20 20 23 73,5 73,5 90 69,5 69,5 88 8,8 8,8 11,4 8 500 8 500 8 500 9 000 9 000 9 000 0,49 0,5 0,56 • NJ 210 ECP • NUP 210 ECP • NU 2210 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 90 90 110 23 23 27 90 90 127 88 88 112 11,4 11,4 15 8 500 8 500 6 700 9 000 9 000 8 000 0,57 0,59 1,1 • NJ 2210 ECP • NUP 2210 ECP N 310 ECP J, M, ML, PH J, M, ML, PH 110 110 110 27 27 27 127 127 127 112 112 112 15 15 15 6 700 6 700 6 700 8 000 8 000 8 000 1,1 1,15 1,15 • NU 310 ECP • NJ 310 ECP • NUP 310 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 110 110 110 40 40 40 186 186 186 186 186 186 24,5 24,5 24,5 6 700 6 700 6 700 8 000 8 000 8 000 1,75 1,75 1,75 • NJ 2310 ECP • NU 2310 ECP • NUP 2310 ECP ML, PH ML, PH ML, PH 130 130 31 31 130 130 127 127 16,6 16,6 6 000 6 000 7 000 7 000 • NU 410 • NJ 410 2 2,05 0,39 0,42 0,65 • NU 1011 ECP NJ 1011 ECP • N 211 ECP 55 90 90 100 18 18 21 57,2 57,2 96,5 69,5 69,5 95 8,3 8,3 12,2 8 500 8 500 7 500 8 500 8 500 8 000 ML ML 100 100 100 21 21 21 96,5 96,5 96,5 95 95 95 12,2 12,2 12,2 7 500 7 500 7 500 8 000 8 000 8 000 0,66 0,67 0,68 • NU 211 ECP • NJ 211 ECP • NUP 211 ECP J, М, ML J, М, ML J, M, ML 100 100 100 25 25 25 114 114 114 118 118 118 15,3 15,3 15,3 7 500 7 500 7 500 8 000 8 000 8 000 0,79 0,81 0,82 • NU 2211 ECP • NJ 2211 ECP • NUP 2211 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 120 120 120 29 29 29 156 156 156 143 143 143 18,6 18,6 18,6 6 000 6 000 6 000 7 000 7 000 7 000 1,45 1,45 1,5 • N 311 ECP • NU 311 ECP • NJ 311 ECP M J, М, ML J, М, ML SKF Explorer bearing • Popular item 1) When ordering bearings with an alternative standard cage the suffix of the standard cage has to be replaced by the suffix of the alternative cage. For examnle NU ECP hecomes NU ECML (for nermissihle speed - nage 511)
Transcribed Image Text:Principal dimensions Basic load ratings Designations Bearing with standard cage Fatigue Speed ratings Limiting speed Mass dynamic static load limit Reference Alternative speed standard cage1) d D B Co Pu kN kN r/min kg m 45 cont. 100 100 100 25 36 36 112 160 160 100 153 153 12,9 20 20 7 500 7 500 7 500 8 500 8 500 8 500 0,93 1,3 1,35 • NUP 309 ECP • NU 2309 ECP • NJ 2309 ECP J, M, ML, PH ML ML 6.1 100 120 120 36 29 29 160 106 106 153 102 102 20 13,4 13,4 7 500 6 700 6 700 8 500 7 500 7 500 1,35 1,65 1,65 • NUP 2309 ECP • NJ 409 • NU 409 ML • NU 1010 ECP • NU 210 ECP N 210 ECP 50 80 90 90 16 20 20 46,8 73,5 73,5 56 69,5 69,5 6,7 8,8 8,8 9 500 8 500 8 500 9 500 9 000 9 000 0,27 0,47 0,48 J, M, ML, PH 90 90 90 20 20 23 73,5 73,5 90 69,5 69,5 88 8,8 8,8 11,4 8 500 8 500 8 500 9 000 9 000 9 000 0,49 0,5 0,56 • NJ 210 ECP • NUP 210 ECP • NU 2210 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 90 90 110 23 23 27 90 90 127 88 88 112 11,4 11,4 15 8 500 8 500 6 700 9 000 9 000 8 000 0,57 0,59 1,1 • NJ 2210 ECP • NUP 2210 ECP N 310 ECP J, M, ML, PH J, M, ML, PH 110 110 110 27 27 27 127 127 127 112 112 112 15 15 15 6 700 6 700 6 700 8 000 8 000 8 000 1,1 1,15 1,15 • NU 310 ECP • NJ 310 ECP • NUP 310 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 110 110 110 40 40 40 186 186 186 186 186 186 24,5 24,5 24,5 6 700 6 700 6 700 8 000 8 000 8 000 1,75 1,75 1,75 • NJ 2310 ECP • NU 2310 ECP • NUP 2310 ECP ML, PH ML, PH ML, PH 130 130 31 31 130 130 127 127 16,6 16,6 6 000 6 000 7 000 7 000 • NU 410 • NJ 410 2 2,05 0,39 0,42 0,65 • NU 1011 ECP NJ 1011 ECP • N 211 ECP 55 90 90 100 18 18 21 57,2 57,2 96,5 69,5 69,5 95 8,3 8,3 12,2 8 500 8 500 7 500 8 500 8 500 8 000 ML ML 100 100 100 21 21 21 96,5 96,5 96,5 95 95 95 12,2 12,2 12,2 7 500 7 500 7 500 8 000 8 000 8 000 0,66 0,67 0,68 • NU 211 ECP • NJ 211 ECP • NUP 211 ECP J, М, ML J, М, ML J, M, ML 100 100 100 25 25 25 114 114 114 118 118 118 15,3 15,3 15,3 7 500 7 500 7 500 8 000 8 000 8 000 0,79 0,81 0,82 • NU 2211 ECP • NJ 2211 ECP • NUP 2211 ECP J, M, ML, PH J, M, ML, PH J, M, ML, PH 120 120 120 29 29 29 156 156 156 143 143 143 18,6 18,6 18,6 6 000 6 000 6 000 7 000 7 000 7 000 1,45 1,45 1,5 • N 311 ECP • NU 311 ECP • NJ 311 ECP M J, М, ML J, М, ML SKF Explorer bearing • Popular item 1) When ordering bearings with an alternative standard cage the suffix of the standard cage has to be replaced by the suffix of the alternative cage. For examnle NU ECP hecomes NU ECML (for nermissihle speed - nage 511)
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