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Single row cylindrical roller bearing
Single row cylindrical roller bearing
Single row cylindrical roller bearing

Cylindrical Roller Bearings

Single row cylindrical roller bearing

Description：

The single row cylindrical roller bearing is a type of rolling-element bearing that consists of cylindrical rollers held in place by a cage (or retainer) between inner and outer races. These bearings are designed to provide support for radial loads, meaning they primarily carry loads perpendicular to the axis of rotation. Single row cylindrical roller bearings are versatile components widely used in engineering applications where radial load support and high-speed capabilities are required.

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Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimentions(mm) Abutment and fillet dimensions
(mm)		 Weigh
t
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
17 40 12 0.6 0.3 22.1 35.1 17.2 14.1 16000 19000 NU203E NJ203E NUP203E N203E NF203E 32.5 24.9 19.0 36.0 37.0 0.6 0.3 0.066
20 42 12 0.6 0.3 25.5 36.5 12.3 10.3 17000 20000 NU1004 NJ1004 NUP1004 N1004 NF1004 33.7 28.3 – – – – – 0.077
20 47 14 1.0 0.6 26.5 41.5 25.2 22.1 13000 16000 NU204E NJ204E NUP204E N204E NF204E 38.5 29.7 24.0 42.0 43.0 1.0 0.6 0.108
20 47 18 1.0 0.6 26.5 41.5 29.7 27.5 13000 16000 NU2204E NJ2204E NUP2204E N2204E NF2204E 38.5 29.7 24.0 42.0 43.0 1.0 0.6 0.120
20 52 15 1.1 0.6 27.5 45.5 30.5 25.7 12000 15000 NU304E NJ304E NUP304E N304E NF304E 42.3 31.2 24.0 45.5 47.0 1.0 0.6 0.149
20 52 21 1.1 0.6 27.5 45.5 42.0 39.0 11000 14000 NU2304E NJ2304E NUP2304E N2304E NF2304E 42.3 31.2 24.0 45.5 47.0 1.0 0.6 0.180
25 47 12 0.6 0.3 30.5 41.5 13.0 11.6 15000 18000 NU1005 NJ1005 NUP1005 N1005 NF1005 38.7 33.3 27.0 43.0 – 0.6 0.3 0.091
25 52 15 1.0 0.6 31.5 46.5 28.7 27.0 11000 14000 NU205E NJ205E NUP205E N205E NF205E 43.5 34.7 29.0 47.0 48.0 1.0 0.6 0.130
25 52 18 1.0 0.6 31.5 46.5 34.1 34.0 11000 14000 NU2205E NJ2205E NUP2205E N2205E NF2205E 43.5 34.7 29.0 47.0 48.0 1.0 0.6 0.140
25 62 17 1.1 1.1 34.0 54.0 41.6 35.9 9500 12000 NU305E NJ305E NUP305E N305E NF305E 50.4 38.1 31.5 55.5 56.0 1.0 1.0 0.237
25 62 24 1.1 1.1 34.0 54.0 56.1 55.0 9000 11000 NU2305E NJ2305E NUP2305E N2305E NF2305E 50.4 38.1 31.5 55.5 56.0 1.0 1.0 0.250
30 55 13 1.0 0.6 36.5 48.5 17.9 17.3 12000 15000 NU1006 NJ1006 NUP1006 N1006 NF1006 45.7 – 34.0 50.0 – 1.0 0.6 0.120
30 62 16 1.0 0.6 37.5 55.5 37.7 36.5 9500 12000 NU206E NJ206E NUP206E N206E NF206E 51.9 41.3 34.0 57.0 57.0 1.0 0.6 0.200
30 62 20 1.0 0.6 37.5 55.5 48.4 49.0 9500 12000 NU2206E NJ2206E NUP2206E N2206E NF2206E 51.9 41.3 34.0 57.0 57.0 1.0 0.6 0.270
30 72 19 1.1 1.1 40.5 62.5 51.6 48.4 9000 11000 NU306E NJ306E NUP306E N306E NF306E 58.5 45.0 36.5 65.5 64.0 1.0 1.0 0.360
30 72 27 1.1 1.1 40.5 62.5 73.7 75.0 8000 9500 NU2306E NJ2306E NUP2306E N2306E NF2306E 58.5 45.0 36.5 65.5 64.0 1.0 1.0 0.530
30 90 23 1.5 1.5 45.0 73.0 60.5 53.0 7500 9000 NU406 NJ406 NUP406 N406 NF406 66.6 50.5 38.0 82.0 – 1.5 1.5 0.750
35 62 14 1.0 0.6 42.0 55.0 35.8 38.0 10000 13000 NU1007 NJ1007 NUP1007 N1007 NF1007 51.9 – 38.0 57.0 – 1.0 0.6 0.180
35 72 17 1.1 0.6 44.0 64.0 48.7 48.2 8500 10000 NU207E NJ207E NUP207E N207E NF207E 60.7 48.3 39.0 65.5 66.0 1.0 0.6 0.296
35 72 23 1.1 0.6 44.0 64.0 59.4 63.0 8500 10000 NU2207E NJ2207E NUP2207E N2207E NF2207E 60.7 48.3 39.0 65.5 66.0 1.0 0.6 0.400
35 80 21 1.5 1.1 46.2 70.2 65.0 53.3 8000 9500 NU307E NJ307E NUP307E N307E NF307E 66.3 51.5 41.5 72.0 72.0 1.5 1.0 0.472
35 80 31 1.5 1.1 46.2 70.2 91.3 98.0 7000 8500 NU2307E NJ2307E NUP2307E N2307E NF2307E 66.3 51.5 41.5 72.0 72.0 1.5 1.0 0.720
35 100 25 1.5 1.5 53.0 83.0 76.5 69.5 6700 8000 NU407 NJ407 NUP407 N407 NF407 76.1 59.0 43.0 92.0 – 1.5 1.5 1.000
40 68 15 1.0 0.6 47.0 61.0 25.1 26.0 9500 12000 NU1008 NJ1008 NUP1008 N1008 NF1008 57.6 – 44.0 63.0 – 1.0 0.6 0.220
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimentions(mm) Abutment and fillet dimensions
(mm)		 Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
40 80 18 1.1 1.1 49.5 71.5 53.9 53.2 7500 9000 NU208E NJ208E NUP208E N208E NF208E 67.1 54.2 46.5 73.5 73.0 1.0 1.0 0.368
40 80 23 1.1 1.1 49.5 71.5 70.4 75.0 7500 9000 NU2208E NJ2208E NUP2208E N2208E NF2208E 67.1 54.2 46.5 73.5 73.0 1.0 1.0 0.490
40 90 23 1.5 1.5 52.0 80.0 80.4 78.0 6700 8000 NU308E NJ308E NUP308E N308E NF308E 75.4 57.7 48.0 82.0 82.0 1.5 1.5 0.636
40 90 33 1.5 1.5 52.0 80.0 112.0 120.0 6700 8000 NU2308E NJ2308E NUP2308E N2308E NF2308E 75.4 57.7 48.0 82.0 82.0 1.5 1.5 0.950
40 110 27 1.5 1.5 58.0 92.0 96.8 90.0 6000 7000 NU408 NJ408 NUP408 N408 NF408 84.2 64.8 49.0 101.0 – 2.0 2.0 1.300
45 75 16 1.0 0.6 52.5 67.5 44.6 52.0 9000 11000 NU1009 NJ1009 NUP1009 N1009 NF1009 65.3 – 49.0 101.0 – 1.0 0.6 0.260
45 85 19 1.1 1.1 54.5 76.5 61.3 64.1 6700 8000 NU209E NJ209E NUP209E N209E NF209E 72.1 59.2 51.5 78.5 78.0 1.0 1.0 0.424
45 85 23 1.1 1.1 54.5 76.5 76.2 81.5 6700 8000 NU2209E NJ2209E NUP2209E N2209E NF2209E 72.1 59.2 51.5 78.5 78.0 1.0 1.0 0.520
45 100 25 1.5 1.5 58.5 88.5 97.6 98.3 6300 7500 NU309E NJ309E NUP309E N309E NF309E 83.6 64.7 53.0 92.0 91.0 1.5 1.5 0.873
45 100 36 1.5 1.5 58.5 88.5 138.0 153.0 6300 7500 NU2309E NJ2309E NUP2309E N2309E NF2309E 83.6 64.7 53.0 92.0 91.0 1.5 1.5 1.300
45 120 29 2.0 2.0 64.5 100.5 106.0 102.0 5600 6700 NU409 NJ409 NUP409 N409 NF409 92.2 71.8 54.0 111.0 – 2.0 2.0 1.650
50 80 16 1.0 0.6 57.5 72.5 30.1 33.1 8500 10000 NU1010 NJ1010 NUP1010 N1010 NF1010 68.9 61.3 54.0 75.0 – 1.0 0.6 0.300
50 90 20 1.1 1.1 59.5 81.5 64.1 69.3 6300 7500 NU210E NJ210E NUP210E N210E NF210E 77.1 64.2 56.5 83.5 84.0 1.0 1.0 0.482
50 90 23 1.1 1.1 59.5 81.5 79.2 88.0 6300 7500 NU2210E NJ2210E NUP2210E N2210E NF2210E 77.1 64.2 56.5 83.5 84.0 1.0 1.0 0.575
50 110 27 2.0 2.0 65.0 97.0 110.0 113.0 5000 6000 NU310E NJ310E NUP310E N310E NF310E 91.7 71.2 59.0 101.0 99.0 2.0 2.0 1.120
50 110 40 2.0 2.0 65.0 97.0 161.0 186.0 5000 6000 NU2310E NJ2310E NUP2310E N2310E NF2310E 91.7 71.2 59.0 101.0 99.0 2.0 2.0 1.700
50 130 31 2.1 2.1 70.8 110.8 130.0 127.0 5000 6000 NU410 NJ410 NUP410 N410 NF410 102.0 78.8 61.0 119.0 – 2.0 2.0 2.000
55 90 18 1.1 1.0 64.5 80.5 36.9 42.6 7000 8500 NU1011 NJ1011 NUP1011 N1011 NF1011 76.6 68.4 60.0 83.5 – 1.0 1.0 0.422
55 100 21 1.5 1.1 66.0 90.0 84.2 96.7 6000 7000 NU211E NJ211E NUP211E N211E NF211E 85.2 70.9 61.5 92.0 92.0 1.5 1.5 0.649
55 100 25 1.5 1.1 66.0 90.0 99.0 118.0 6000 7000 NU2211E NJ2211E NUP2211E N2211E NF2211E 85.2 70.9 61.5 92.0 92.0 1.5 1.5 0.790
55 120 29 2.0 2.0 70.5 106.5 134.0 141.0 4800 5600 NU311E NJ311E NUP311E N311E NF311E 100.6 77.4 64.0 111.0 109.0 2.0 2.0 1.440
55 120 43 2.0 2.0 70.5 106.5 201.0 232.0 4800 5600 NU2311E NJ2311E NUP2311E N2311E NF2311E 100.6 77.4 64.0 111.0 109.0 2.0 2.0 2.200
55 140 33 2.1 2.1 77.2 117.2 142.0 140.0 4800 5600 NU411 NJ411 NUP411 N411 NF411 108.0 85.2 66.0 129.0 – 2.0 2.0 2.500
60 95 18 1.1 1.0 69.5 85.5 37.4 44.0 6700 8000 NU1012 NJ1012 NUP1012 N1012 NF1012 81.6 – 65.0 88.5 – 1.0 1.0 0.480
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimentions(mm) Abutment and fillet dimensions
(mm)		 Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
60 110 22 1.5 1.5 72.0 100.0 93.9 102.0 5300 6300 NU212E NJ212E NUP212E N212E NF212E 94.4 77.7 68.0 102.0 102.0 1.5 1.5 0.807
60 110 28 1.5 1.5 72.0 100.0 128.0 153.0 5300 6300 NU2212E NJ2212E NUP2212E N2212E NF2212E 94.4 77.7 68.0 102.0 102.0 1.5 1.5 1.100
60 130 31 2.1 2.1 77.0 115.0 150.0 159.0 4300 5000 NU312E NJ312E NUP312E N312E NF312E 110.0 84.3 71.0 119.0 118.0 2.0 2.0 1.810
60 130 46 2.1 2.1 77.0 115.0 224.0 265.0 4300 5000 NU2312E NJ2312E NUP2312E N2312E NF2312E 110.0 84.3 71.0 119.0 118.0 2.0 2.0 2.750
60 150 35 2.1 2.1 83.0 127.0 168.0 173.0 4300 5000 NU412 NJ412 NUP412 N412 NF412 117.0 91.8 71.0 139.0 – 2.0 2.0 3.000
65 100 18 1.1 1.0 74.5 90.5 38.0 46.5 6300 7500 NU1013 NJ1013 NUP1013 N1013 NF1013 86.6 – 70.0 93.5 – 1.0 1.0 0.510
65 120 23 1.5 1.5 78.5 108.5 107.0 119.0 4800 5600 NU213E NJ213E NUP213E N213E NF213E 102.5 84.5 73.0 112.0 111.0 1.5 1.5 1.020
65 120 31 1.5 1.5 78.5 108.5 147.0 180.0 4800 5600 NU2213E NJ2213E NUP2213E N2213E NF2213E 102.5 84.5 73.0 112.0 111.0 1.5 1.5 1.400
65 140 33 2.1 2.1 82.5 124.5 183.0 190.0 4000 4800 NU313E NJ313E NUP313E N313E NF313E 118.0 90.6 76.0 129.0 127.0 2.0 2.0 2.210
65 140 48 2.1 2.1 82.5 124.5 251.0 290.0 4000 4800 NU2313E NJ2313E NUP2313E N2313E NF2313E 118.0 90.6 76.0 129.0 127.0 2.0 2.0 3.300
65 160 37 2.1 2.1 89.3 135.5 183.0 190.0 4000 4800 NU413 NJ413 NUP413 N413 NF413 125.0 98.5 76.0 149.0 – 2.0 2.0 3.600
70 110 20 1.1 1.0 80.0 100.0 56.1 67.2 6000 7000 NU1014 NJ1014 NUP1014 N1014 NF1014 95.4 – 75.0 103.5 – 1.0 1.0 0.700
70 125 24 1.5 1.5 83.5 113.5 119.0 137.0 4500 5300 NU214E NJ214E NUP214E N214E NF214E 107.5 89.5 78.0 117.0 116.0 1.5 1.5 1.130
70 125 31 1.5 1.5 83.5 113.5 154.0 193.0 4500 5300 NU2214E NJ2214E NUP2214E N2214E NF2214E 107.5 89.5 78.0 117.0 116.0 1.5 1.5 1.500
70 150 35 2.1 2.1 89.0 133.0 204.0 220.0 3600 4300 NU314E NJ314E NUP314E N314E NF314E 126.2 97.5 81.0 139.0 136.0 2.0 2.0 2.680
70 150 51 2.1 2.1 89.0 133.0 275.0 325.0 3600 4300 NU2314E NJ2314E NUP2314E N2314E NF2314E 126.2 97.5 81.0 139.0 136.0 2.0 2.0 4.000
70 180 42 3.0 3.0 100.0 152.0 229.0 240.0 3600 4300 NU414 NJ414 NUP414 N414 NF414 140.0 110.0 83.0 167.0 – 2.5 2.5 5.250
75 115 20 1.1 1.0 85.0 105.0 58.3 71.0 5600 6700 NU1015 NJ1015 NUP1015 N1015 NF1015 101.0 – 80.0 108.5 – 1.0 1.0 0.750
75 130 25 1.5 1.5 88.5 118.5 130.0 156.0 4500 5300 NU215E NJ215E NUP215E N215E NF215E 112.5 94.5 83.0 122.0 121.0 1.5 1.5 1.260
75 130 31 1.5 1.5 88.5 118.5 161.0 208.0 4500 5300 NU2215E NJ2215E NUP2215E N2215E NF2215E 112.5 94.5 83.0 122.0 121.0 1.5 1.5 1.600
75 160 37 2.1 2.1 95.0 143.0 242.0 261.0 3400 4000 NU315E NJ315E NUP315E N315E NF315E 135.6 104.0 86.0 149.0 146.0 2.0 2.0 3.250
75 160 55 2.1 2.1 95.0 143.0 330.0 400.0 3400 4000 NU2315E NJ2315E NUP2315E N2315E NF2315E 135.6 104.0 86.0 149.0 146.0 2.0 2.0 4.900
75 190 45 3.0 3.0 104.5 160.5 264.0 280.0 3400 4000 NU415 NJ415 NUP415 N415 NF415 148.0 116.0 88.0 177.0 – 2.5 2.5 6.250
80 125 22 1.1 1.0 91.5 113.5 66.0 81.5 5300 6300 NU1016 NJ1016 NUP1016 N1016 NF1016 109.0 – 85.0 118.5 – 1.0 1.0 0.990
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimentions(mm) Abutment and fillet dimensions
(mm)		 Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
80 140 26 2.0 2.0 95.3 127.3 139.0 167.0 4000 4800 NU216E NJ216E NUP216E N216E NF216E 121.7 101.1 89.0 131.0 130.0 2.0 2.0 1.520
80 140 33 2.0 2.0 95.3 127.3 187.0 245.0 4000 4800 NU2216E NJ2216E NUP2216E N2216E NF2216E 121.7 101.1 89.0 131.0 130.0 2.0 2.0 2.000
80 170 39 2.1 2.1 101.0 151.0 260.0 284.0 3200 3800 NU316E NJ316E NUP316E N316E NF316E 143.3 110.1 91.0 159.0 154.0 2.0 2.0 3.880
80 170 58 2.1 2.1 101.0 151.0 358.0 440.0 3200 3800 NU2316E NJ2316E NUP2316E N2316E NF2316E 143.3 110.1 91.0 159.0 154.0 2.0 2.0 5.850
80 200 48 3.0 3.0 110.0 170.0 303.0 320.0 3200 3800 NU416 NJ416 NUP416 N416 NF416 157.0 122.0 93.0 187.0 – 2.5 2.5 7.300

Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimensions (mm) Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
85 130 22 1.1 1.0 96.5 118.5 68.2 86.5 5000 6000 NU1017 NJ1017 NUP1017 N1017 NF1017 114.0 – 90.0 123.5 – 1.0 1.0 1.050
85 150 28 2.0 2.0 100.5 136.5 166.0 196.0 3800 4500 NU217E NJ217E NUP217E N217E NF217E 130.2 107.1 94.0 141.0 139.0 2.0 2.0 1.890
85 150 36 2.0 2.0 100.5 136.5 216.0 280.0 3800 4500 NU2217E NJ2217E NUP2217E N2217E NF2217E 130.2 107.1 94.0 141.0 139.0 2.0 2.0 2.450
85 180 41 3.0 3.0 108.0 160.0 293.0 333.0 3000 3600 NU317E NJ317E NUP317E N317E NF317E 153.0 117.4 98.0 167.0 163.0 2.5 2.5 4.610
85 180 60 3.0 3.0 108.0 160.0 396.0 490.0 3000 3600 NU2317E NJ2317E NUP2317E N2317E NF2317E 153.0 117.4 98.0 167.0 163.0 2.5 2.5 6.850
85 210 52 4.0 4.0 113.0 177.0 319.0 335.0 3000 3600 NU417 NJ417 NUP417 N417 NF417 163.0 126.0 101.0 194.0 – 3.0 3.0 8.700
90 140 24 1.5 1.5 103.0 127.0 80.9 104.0 4800 5600 NU1018 NJ1018 NUP1018 N1018 NF1018 122.0 117.4 96.5 132.0 – 1.5 1.0 1.350
90 160 30 2.0 2.0 107.0 145.0 183.0 220.0 3600 4300 NU218E NJ218E NUP218E N218E NF218E 138.4 113.9 99.0 151.0 148.0 2.0 2.0 2.320
90 160 40 2.0 2.0 107.0 145.0 242.0 315.0 3600 4300 NU2218E NJ2218E NUP2218E N2218E NF2218E 138.4 113.9 99.0 151.0 148.0 2.0 2.0 3.150
90 190 43 3.0 3.0 113.5 169.5 313.0 349.0 2800 3400 NU318E NJ318E NUP318E N318E NF318E 160.8 123.7 103.0 177.0 173.0 2.5 2.5 5.270
90 190 64 3.0 3.0 113.5 169.5 440.0 540.0 2800 3400 NU2318E NJ2318E NUP2318E N2318E NF2318E 160.8 123.7 103.0 177.0 173.0 2.5 2.5 8.000
90 225 54 4.0 4.0 123.5 191.5 380.0 415.0 2800 3400 NU418 NJ418 NUP418 N418 NF418 176.0 137.0 106.0 209.0 – 3.0 3.0 10.500
95 145 24 1.5 1.1 108.0 132.0 84.2 110.0 4500 5300 NU1019 NJ1019 NUP1019 N1019 NF1019 127.0 – 101.5 137.0 – 1.5 1.0 1.400
95 170 32 2.1 2.1 112.5 154.5 220.0 265.0 3400 4000 NU219E NJ219E NUP219E N219E NF219E `147.2 120.2 106.0 159.0 157.0 2.0 2.0 2.850
95 170 43 2.1 2.1 112.5 154.5 286.0 375.0 3400 4000 NU2219 NJ2219 NUP2219 N2219 NF2219 147.2 120.2 106.0 159.0 157.0 2.0 2.0 3.850
95 200 45 3.0 3.0 121.5 177.5 331.0 381.0 2600 3200 NU319E NJ319E NUP319E N319E NF319E 169.0 132.0 108.0 187.0 181.0 2.5 2.5 6.260
95 200 67 3.0 3.0 121.5 177.5 468.0 585.0 2600 3200 NU2319E NJ2319E NUP2319E N2319E NF2319E 169.0 132.0 108.0 187.0 181.0 2.5 2.5 9.300
95 240 55 4.0 4.0 133.5 201.5 413.0 455.0 2600 3200 NU419 NJ419 NUP419 N419 NF419 186.0 147.0 111.0 224.0 – 3.0 3.0 13.500
100 150 24 1.5 1.1 113.0 137.0 85.8 114.0 4300 5000 NU1020 NJ1020 NUP1020 N1020 NF1020 132.0 – 106.5 142.0 – 1.5 1.0 1.450
100 180 34 2.1 2.1 119.0 163.0 247.0 303.0 3200 3800 NU220E NJ220E NUP220E N220E NF220E 155.3 127.0 111.0 169.0 166.0 2.0 2.0 3.450
100 180 46 2.1 2.1 119.0 163.0 336.0 450.0 3200 3800 NU2220E NJ2220E NUP2220E N2220E NF2220E 157.0 127.0 111.0 169.0 166.0 2.0 2.0 4.750
100 215 47 3.0 3.0 127.5 191.5 391.0 440.0 2400 3000 NU320E NJ320E NUP320E N320E NF320E 182.3 139.1 113.0 202.0 195.0 2.5 2.5 8.570
100 215 73 3.0 3.0 127.5 191.5 583.0 735.0 2400 3000 NU2320E NJ2320E NUP2320E N2320E NF2320E 182.3 139.1 113.0 202.0 195.0 2.5 2.5 11.900
100 250 58 4.0 4.0 139.0 211.0 429.0 475.0 2400 3000 NU420 NJ420 NUP420 N420 NF420 195.0 153.0 116.0 234.0 – 3.0 3.0 14.000
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimensions (mm) Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
105 160 26 2.0 1.1 119.5 145.0 101.0 137.0 4000 4800 NU1021 NJ1021 NUP1021 N1021 NF1021 140.0 – 111.5 151.0 – 2.0 1.0 1.850
105 190 36 2.1 2.1 125.0 173.0 264.0 315.0 3000 3600 NU221E NJ221E NUP221E N221E NF221E 164.0 134.0 116.0 179.0 176.0 2.0 2.0 4.000
105 225 49 3.0 3.0 133.0 201.0 440.0 500.0 2200 2800 NU321E NJ321E NUP321E N321E NF321E 190.0 145.0 118.0 212.0 203.0 2.5 2.5 8.800
105 260 60 4.0 4.0 144.5 – 501.0 570.0 2200 2800 NU421 NJ421 NUP421 N421 NF421 203.0 159.0 121.0 244.0 – 3.0 3.0 19.00
110 170 28 2.0 1.1 125.0 155.0 128.0 166.0 3800 4800 NU1022 NJ1022 NUP1022 N1022 NF1022 149.0 – 116.5 161.0 – 2.0 1.0 2.300
110 200 38 2.1 2.1 132.5 180.5 291.0 362.0 2800 3400 NU222E NJ222E NUP222E N222E NF222E 172.1 141.3 121.0 189.0 183.0 2.0 2.0 4.770
110 200 53 2.1 2.1 132.5 180.5 380.0 520.0 2800 3400 NU2222 NJ2222 NUP2222 N2222 NF2222 172.1 141.3 121.0 189.0 – 2.0 2.0 6.700
110 240 50 3.0 3.0 143.0 211.0 468.0 540.0 2000 2600 NU322E NJ322E NUP322E N322E NF322E 199.9 155.9 123.0 227.0 215.0 2.5 2.5 10.500
110 240 80 3.0 3.0 143.0 211.0 682.0 900.0 2000 2600 NU2322 NJ2322 NUP2322 N2322 NF2322 199.9 155.9 123.0 227.0 – 2.5 2.5 17.000
110 280 65 4.0 4.0 155.0 – 523.0 585.0 2000 2600 NU422 NJ422 NUP422 N422 NF422 217.0 171.0 126.0 264.0 – 3.0 3.0 20.000
120 180 28 2.0 1.1 135.0 165.0 134.0 183.0 3400 4000 NU1024 NJ1024 NUP1024 N1024 NF1024 159.0 – 126.5 171.0 – 2.0 1.0 2.450
120 215 40 2.1 2.1 143.5 195.5 341.0 430.0 2400 3000 NU224E NJ224E NUP224E N224E NF224E 186.4 153.0 131.0 204.0 199.0 2.0 2.0 5.750
120 215 58 2.1 2.1 143.5 195.5 457.0 630.0 2400 3000 NU2224 NJ2224 NUP2224 N2224 NF2224 186.4 153.0 131.0 204.0 – 2.0 2.0 8.300
120 260 55 3.0 3.0 154.0 230.0 539.0 620.0 1900 2400 NU324E NJ324E NUP324E N324E NF324E 219.0 168.0 133.0 247.0 234.0 2.5 2.5 13.500
120 260 86 3.0 3.0 154.0 230.0 792.0 1040.0 1900 2400 NU2324 NJ2324 NUP2324 N2324 NF2324 219.0 168.0 133.0 247.0 – 2.5 2.5 24.000
120 310 72 5.0 5.0 170.0 260.0 644.0 735.0 1900 2400 NU424 NJ424 NUP424 N424 NF424 240.0 188.0 140.0 290.0 – 4.0 4.0 28.000
130 200 33 2.0 1.1 148.0 182.0 165.0 224.0 3200 3800 NU1026 NJ1026 NUP1026 N1026 NF1026 175.0 – 136.5 191.0 – 2.0 1.0 3.750
130 230 40 3.0 3.0 153.5 209.5 358.0 455.0 2200 2800 NU226E NJ226E NUP226E N226E NF226E 202.0 164.0 143.0 217.0 213.0 2.5 2.5 6.450
130 230 64 3.0 3.0 153.5 209.5 528.0 735.0 2200 2800 NU2226 NJ2226 NUP2226 N2226 NF2226 202.0 164.0 143.0 217.0 – 2.5 2.5 10.500
130 280 58 4.0 4.0 167.0 247.0 627.0 750.0 1800 2200 NU326E NJ326E NUP326E N326E NF326E 236.0 181.0 146.0 264.0 251.0 3.0 3.0 18.500
130 280 93 4.0 4.0 167.0 247.0 935.0 1250.0 1800 2200 NU2326 NJ2326 NUP2326 N2326 NF2326 236.0 181.0 146.0 264.0 251.0 3.0 3.0 30.000
140 210 33 2.0 1.1 158.0 192.0 172.0 245.0 3000 3600 NU1028 NJ1028 NUP1028 N1028 NF1028 185.0 – 146.5 201.0 225.0 2.0 1.0 4.000
140 250 42 3.0 3.0 169.0 221.0 391.0 510.0 2000 2600 NU228E NJ228E NUP228E N228E NF228E 217.0 179.0 153.0 237.0 – 2.5 2.5 8.300
140 250 68 3.0 3.0 169.0 221.0 572.0 830.0 2000 2600 NU2228 NJ2228 NUP2228 N2228 NF2228 217.0 179.0 153.0 237.0 225.0 2.5 2.5 13.500
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimensions (mm) Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
140 300 62 4.0 4.0 180.0 260.0 682.0 830.0 1800 2200 NU328E NJ328E NUP328E N328E NF328E 252.0 195.0 156.0 284.0 264.0 3.0 3.0 22.200
140 300 102 4.0 4.0 180.0 260.0 1050.0 1430.0 1800 2200 NU2328 NJ2328 NUP2328 N2328 NF2328 252.0 195.0 156.0 284.0 264.0 3.0 3.0 37.000
150 225 35 2.1 1.5 169.5 205.5 194.0 275.0 2600 3200 NU1030 NJ1030 NUP1030 N1030 NF1030 198.0 – 158.0 214.0 – 2.0 1.5 4.850
150 270 45 3.0 3.0 182.0 238.0 446.0 600.0 1900 2400 NU230E NJ230E NUP230E N230E NF230E 234.0 193.0 163.0 257.0 242.0 2.5 2.5 10.500
150 270 73 3.0 3.0 182.0 238.0 627.0 930.0 1900 2400 NU2230 NJ2230 NUP2230 N2230 NF2230 234.0 194.0 163.0 257.0 242.0 2.5 2.5 19.000
150 320 65 4.0 4.0 193.0 283.0 781.0 965.0 1700 2000 NU330E NJ330E NUP330E N330E NF330E 270.0 209.0 166.0 304.0 287.0 3.0 3.0 27.500
150 320 108 4.0 4.0 193.0 283.0 1190.0 1630.0 1700 2000 NU2330 NJ2330 NUP2330 N2330 NF2330 270.0 209.0 166.0 304.0 287.0 3.0 3.0 45.00
160 240 38 2.1 1.5 180.0 220.0 229.0 325.0 2400 3000 NU1032 NJ1032 NUP1032 N1032 NF1032 211.0 – 168.0 229.0 – 2.0 1.5 5.950
160 290 48 3.0 3.0 195.0 259.0 501.0 680.0 1800 2200 NU232E NJ232E NUP232E N232E NF232E 250.0 206.0 173.0 277.0 263.0 2.5 2.5 15.000
160 290 80 3.0 3.0 193.0 261.0 809.0 1200.0 1800 2200 NU2232 NJ2232 NUP2232 N2232 NF2232 252.0 205.0 173.0 277.0 263.0 2.5 2.5 24.000
160 340 68 4.0 4.0 204.0 300.0 880.0 1080.0 1500 1800 NU332E NJ332E NUP332E N332E NF332E 286.0 221.0 176.0 324.0 – 3.0 3.0 32.500
160 340 114 4.0 4.0 204.0 300.0 1320.0 1860.0 1500 1800 NU2332 NJ2332 NUP2332 N2332 NF2332 286.0 221.0 176.0 324.0 – 3.0 3.0 53.000
170 260 42 2.1 2.1 193.0 237.0 275.0 400.0 2200 2800 NU1034 NJ1034 NUP1034 N1034 NF1034 227.0 201.0 181.0 249.0 – 2.0 2.0 7.900
170 310 52 4.0 4.0 207.0 279.0 616.0 815.0 1800 2200 NU234E NJ234E NUP234E N234E NF234E 269.0 220.0 186.0 294.0 – 3.0 3.0 19.000
170 310 86 4.0 4.0 205.0 281.0 968.0 1430.0 1800 2200 NU2234 NJ2234 NUP2234 N2234 NF2234 270.0 219.0 186.0 294.0 – 3.0 3.0 30.000
170 360 72 4.0 4.0 220.0 310.0 809.0 1040.0 1600 1900 NU334 NJ334 NUP334 N334 NF334 290.0 238.0 186.0 344.0 323.0 3.0 3.0 38.500
170 360 120 4.0 4.0 220.0 318.0 1230.0 1800.0 1400 1700 NU2334 NJ2334 NUP2334 N2334 NF2334 290.0 238.0 186.0 344.0 – 3.0 3.0 63.000
180 280 46 2.1 2.1 205.0 255.0 336.0 475.0 2000 2600 NU1036 NJ1036 NUP1036 N1036 NF1036 244.0 215.0 191.0 269.0 – 2.0 2.0 10.500
180 320 52 4.0 4.0 217.0 289.0 627.0 850.0 1700 2000 NU236 NJ236 NUP236 N236 NF236 279.0 230.0 196.0 304.0 – 3.0 3.0 19.500
180 320 86 4.0 4.0 215.0 291.0 1010.0 1500.0 1700 2000 NU2236 NJ2236 NUP2236 N2236 NF2236 280.0 229.0 196.0 304.0 – 3.0 3.0 31.500
180 380 75 4.0 4.0 232.0 328.0 913.0 1180.0 1500 1800 NU336 NJ336 NUP336 N336 NF336 306.0 252.0 196.0 364.0 – 3.0 3.0 42.500
180 380 126 4.0 4.0 232.0 328.0 1400.0 2040.0 1300 1600 NU2336 NJ2336 NUP2336 N2336 NF2336 306.0 252.0 196.0 364.0 – 3.0 3.0 73.000
190 290 46 2.1 2.1 215.0 265.0 347.0 500.0 2000 2600 NU1038 NJ1038 NUP1038 N1038 NF1038 254.0 225.0 201.0 279.0 – 2.0 2.0 10.000
190 340 55 4.0 4.0 230.0 306.0 693.0 965.0 1600 1900 NU238 NJ238 NUP238 N238 NF238 295.0 244.0 206.0 324.0 – 3.0 3.0 23.500
Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimensions (mm) Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
190 340 92 4.0 4.0 228.0 308.0 1100.0 1660.0 1600 1900 NU2238 NJ2238 NUP2238 N2238 NF2238 297.0 242.0 206.0 324.0 – 3.0 3.0 39.000
190 400 78 5.0 5.0 245.0 345.0 1140.0 1500.0 1200 1500 NU338 NJ338 NUP338 N338 NF338 338.0 264.0 210.0 380.0 – 4.0 4.0 50.000
190 400 132 5.0 5.0 245.0 345.0 1830.0 2550.0 1200 1500 NU2338 NJ2338 NUP2338 N2338 NF2338 341.0 – 210.0 380.0 – 4.0 4.0 82.500
200 310 51 2.1 2.1 229.0 281.0 380.0 570.0 1900 2400 NU1040 NJ1040 NUP1040 N1040 NF1040 269.0 239.0 211.0 299.0 – 2.0 2.0 14.000

Boundary dimensions(mm) Load rating(kN) Limiting speed (r/min) Bearing numbers Other dimensions (mm) Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cr Grease Oil Type NU Type NJ Type NUP Type N Type NF D1 d1 da
min		 Da
max		 Db
min		 ra
max		 rb
max
200 360 58 4.0 4.0 243.0 323.0 765.0 1060.0 1500 1800 NU240 NJ240 NUP240 N240 NF240 312.0 258.0 216.0 344.0 - 3.0 3.0 28.500
200 360 98 4.0 4.0 241.0 325.0 1230.0 1900.0 1500 1800 NU2240 NJ2240 NUP2240 N2240 NF2240 313.0 256.0 216.0 344.0 - 3.0 3.0 46.000

Boundary dimensions(mm) Limiting speed (r/min) Bearing numbers Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Old number New number da
min		 da
max		 db
min		 Da
max		 Da
min		 ra
max		 rb
max
220 460 145 5 5 – 407 2090 3360 1000 1300 – N2344EM 240 403 – 440 411 4 4 114
220 460 145 5 5 284 – 1970 3270 1000 1300 32644E NU2344EM 240 276 288 440 – 4 4 114
220 460 145 5 5 284 – 1970 3270 1000 1300 32644U NU2344M/C9 240 276 288 440 – 4 4 114
240 360 56 3 3 270 – 495 855 1700 2000 32148Q NU1048Q1 253 266 274 347 – 2.5 2.5 21.2
240 440 72 4 4 295 – 950 1540 1300 1600 32248 NU248M 256 288 299 424 – 3 3 46.9
240 440 72 4 4 295 – 950 1540 1300 1600 42248 NJ248M 256 288 317 424 – 3 3 49.6
240 500 95 5 5 – 430 1390 2120 1000 1300 2348 N348M 260 426 – 480 434 4 4 96.3
240 500 95 5 5 310 – 1390 2120 1000 1300 32348 NU348M 260 302 314 480 – 4 4 96.3
240 440 146 4 4 290 – 2040 3820 1100 1400 – NU5248/P5 256 287 293 424 – 3 3 104
240 320 38 2.5 1.8 260 – 280 540 1900 2400 1032948 – 249 257 263 308 – 2 1.5 8.50
250 308 50 6 2.3 – 347 595 1050 1800 2300 – N650EM/HAC9 268 343 – 368 351 5 2 21.4
260 400 65 4 4 – – 625 1090 1500 1800 32152 NU1052M 276 291 300 384 – 3 3 30.2
260 400 65 4 4 296 – 625 1090 1500 1800 92152 NUP1052M 276 – 313 384 – 3 3 37.2
260 400 82 4 4 294 – 985 1880 1300 1700 2032152 NU2052KM 276 291 300 384 – 3 3 40.1
260 480 80 5 5 320 – 1110 1800 1100 1400 32252 NU252M 280 313 324 460 – 4 4 67.1
280 340 30 2 2 – 327 280 690 1800 2200 – N1856X3M/HG2 289 – 324 330 330 2 2 5.76
280 420 65 4 4 316 – 640 1140 1400 1700 42156 NJ1056M 296 311 332 404 – 3 3 32.2
280 380 46 2.1 2.1 306 – 430 865 1700 1900 1032956 – 291 303 309 369 – 2 2 15.5
300 460 74 4 4 340 – 850 1510 1200 1500 42160 NJ1060M 316 335 358 444 – 3 3 45.1
300 460 74 4 4 340 – 850 1510 1200 1500 32160 NU1060M 316 335 344 444 – 3 3 44.1
300 460 74 4 4 340 – 850 1510 1200 1500 – NU1060M/HA 316 335 344 444 – 3 3 44.1
300 460 57 4 4 344 – 730 1340 1400 1700 – NJ1060X2M 316 335 358 444 – 3 3 36.5
300 540 85 5 5 364 – 1370 2270 1000 1300 32260 NU260M 320 358 368 520 – 4 4 86.9
300 620 109 7.5 7.5 385 – 2100 3300 900 1100 32360 NU360M 330 379 390 590 – 7 7 166
Boundary dimensions(mm) Limiting speed (r/min) Bearing numbers Mounting dimensions(mm) Weight
(reference)
(kg)
d D B r1,2
min		 r3,4
min		 Fw Ew Cr Cor Grease Oil Old number New number da
min		 da
max		 db
min		 Da
max		 Da
min		 ra
max		 rb
max
320 480 74 4 4 360 – 870 1580 1100 1400 42164 NJ1064M 336 355 380 464 – 3 3 47.8
320 480 74 4 4 360 – 870 1580 1100 1400 32164 NU1064M 336 355 364 464 – 3 3 48.2
320 480 74 4 4 360 – 870 1580 1100 1400 – NU1064KM/C9 336 355 364 464 – 3 3 46.3
320 480 74 4 4 360 – 870 1580 1100 1400 92164 NUP1064M 336 – 380 464 – 3 3 49.1
320 440 56 3 3 350 – 580 1130 1100 1400 1032964H – 335 346 354 425 – 2.5 2.5 24.7
340 520 82 5 5 385 – 1050 1910 1000 1300 32168 NU1068M 360 380 389 500 – 4 4 65.0
360 750 224 7.5 7.5 455 – 4900 8650 700 850 32672 – 390 445 460 720 – 7 7 480
360 600 192 5 5 420 – 3200 6500 900 1000 – NU3172 373 417 – 587 423 4 4 219
400 600 90 5 5 450 – 1310 2470 900 1100 – NJ1080 420 446 472 580 – 4 4 90.6
440 720 226 6 6 508 – 4750 9800 600 750 3032788 NU3188 460 498 518 700 – 5 5 374
460 760 240 7.5 7.5 531 – 4950 10400 400 480 3032792 NU3192 490 526 536 730 – 6 6 467
460 620 95 4 4 502 – 1520 1600 800 950 – NUP2992 480 – 524 600 – 3 3 85.0
500 670 100 5 5 543 – 1760 4300 750 900 20329/500 – 522 537 549 648 – 3 3 101
530 650 72 3 3 622 – 1060 2890 900 1100 – NF28/530 544 – – 645 625 2.5 2.5 52.2
530 710 106 5 5 580 – 1810 4550 400 500 – NUP29/530 555 – 605 585 – 4 4 125
560 750 112 5 5 703 – 2260 5600 650 780 – N29/560 586 – 693 724 713 4 4 138
600 830 150 5 5 655 – 3100 7450 600 700 327/600 – 619 647 703 806 – 4 4 237
950 1250 175 7.5 7.5 1024 – 5150 13400 140 170 – NUP29/950 990 – 1069 1210 – 6 6 616
1200 1520 185 7.5 7.5 1289 – 5650 17000 110 140 – NU6/1200/C91 1240 1274 1304 1480 – 6 6 825
1200 1520 185 7.5 7.5 1289 – 5650 17000 110 140 – NU6/1200/C9 1240 1274 1304 1480 – 6 6 825
1250 1500 112 6 6 1316 – 3300 9550 300 380 – NU18/1250C9 1280 1306 1326 1470 – 5 5 386

Boundary dimensions(mm) Bearing numbers Load rating(kN) Limiting speed (r/min) Weight
(reference)
(kg)
d D B d1 B1 B2 r r1 F Old number New number Cr Cor Grease Oil
50 110 27 71.2 8 12.74 2 2 65 62310E NJ310E+HJ310E 117 128 5000 6000 1.48
60 130 46 84.2 9 18.78 2.1 2.1 77 62612 NJ2312M+HJ2312 171 217 4300 5000 3.64
65 140 48 91 10 19.78 2.1 2.1 83.5 62613 NJ2313M+HJ2313 192 248 4000 4800 3.99
80 200 48 120.5 13 21.78 3 3 110 62416 NJ416M+HJ416 310 375 3200 3800 8.68
85 210 52 126.3 14 23.73 4 4 115.5 62417 NJ417M+HJ417 350 425 3000 3600 10.2
90 190 43 123.5 12 20.73 3 3 115 62318Q NJ318Q1+HJ318 249 315 2800 3400 6.63
95 240 55 145 15 25.23 4 4 133.5 62419 NJ419M+HJ419 415 525 2600 3200 15.2
100 215 47 139 13 22.23 3 3 129.5 62320Q NJ320Q1+HJ320 291 365 2400 3000 9.64
110 240 50 154 14 23 3 3 143 62322 NJ322M+HJ322 394 515 2000 2600 13.0
110 240 50 154 14 23 3 3 143 62322Q NJ322Q1+HJ322 394 515 2000 2600 13.0
120 215 40 151.5 11 18.73 2.1 2.1 143.5 62224 NJ224M+HJ224 276 390 2400 3000 7.07
140 300 62 194 15 25.69 4 4 180 52328 NJ328M+HJ328 595 805 1800 2200 22.8
150 320 108 208 15 33.67 3.7 4 193 62630 NJ2330M+HJ2330 970 1480 1700 2000 45
160 290 48 204 12 19.68 3 3 193 52232 NU232M+HJ232 450 655 1800 2200 15.8
160 340 114 222.7 15 36.67 4 4 208 62632 NU2332M+HJ2332 1020 1610 1500 1800 57.6
160 340 114 222.7 15 36.67 4 4 208 52632 NJ2332M+HJ2332 1020 1610 1500 1800 57.6
160 340 114 222.7 15 36.67 4 4 208 52632U NU2332M/C9+HJ2332 1020 1610 1500 1800 57.6
180 320 86 229 12 23.67 4 4 215 52536 NU2236M+HJ2236 950 1580 1700 2000 33.4
180 380 75 249.3 17 29.16 4 4 230 52336 NU336M+HJ336 900 1260 1500 1800 45.9
190 400 78 265 18 31.65 4.7 4.7 245 52338U NU338M/C9+HJ338 945 1370 1200 1500 54
190 400 78 265 18 31.65 5 5 245 52338 NU338M+HJ338 945 1370 1200 1500 52.9
190 340 55 242.5 13 23.13 4 4 231 52238 NU238M+HJ238 565 885 1600 1900 23.7
200 310 51 238 13 24.13 2.1 2.1 227 52140 NU1040M+HJ1040 425 705 1900 2400 16.0
200 360 58 260 14 23 4 4 243 52240E NU240E+HJ240E 710 1080 1500 1800 28.2
Boundary dimensions(mm) Bearing numbers Load rating(kN) Limiting speed (r/min) Weight
(reference)
(kg)
d D B d1 B1 B2 r r1 F Old number New number Cr Cor Grease Oil
200 420 138 276 18 41.6 5 5 256 52640 NU2340M+HJ2340 1620 2650 1200 1500 102
200 420 80 279.3 18 32.63 5 5 260 52340 NU340M+HJ340 990 1470 1300 1600 61.8
300 400 65 286 15 27.13 4 4 270 52244 NU244M+HJ244 760 1220 1500 1800 38.6
300 460 88 306 20 35.62 4.7 4.7 284 52344U NU344M/C9+HJ344 1160 1730 1000 1300 81.6
300 460 88 306 20 35.62 5 5 284 52344 NU344M+HJ344 1160 1730 1000 1300 80.1
360 540 82 423 21 39.03 5 5 405 52172 NU1072M+HJ1072 1080 2000 1000 1300 73.6
460 680 100 537.6 25 48 6 6 516 52192 NU1092M+HJ1092 1550 3000 800 950 124

Cylindrical Roller Bearings

Fouble row cylindrical roller bearing

Fouble row cylindrical roller bearing
Double row cylindrical roller bearing

Double row cylindrical roller bearing
Single row cylindrical roller bearing

Single row cylindrical roller bearing
Full complement cylindrical roller bearing

Full complement cylindrical roller bearing
About us
Ningbo Demy (D&M) Bearings Co., Ltd.
Ningbo Demy (D&M) Bearings Co., Ltd.
Ningbo Demy (D&M) Bearings Co., Ltd. is professional China Single row cylindrical roller bearing Suppliers and Wholesale Single row cylindrical roller bearing Manufacturers.Located on the coast of Eastern China, in the beautiful and ancient city of Ningbo, is a rising star enterprise, Ningbo Demy (D&M) Bearings Co., LTD. Its subsidiary company – Ningbo Giant Bearing manufacturing Co., Ltd specializes in high class quality bearings for industrial and automotive applications.
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Cylindrical Roller Bearings Industry knowledge

Why is the radial load bearing capacity of single row cylindrical roller bearing so large?

1. The core design of single row cylindrical roller bearing lies in the line contact between its roller and raceway. Compared with the traditional point contact or surface contact design, line contact can disperse the load more effectively, so that each roller bears more uniform stress. This design enables the bearing to make full use of the length of the roller when bearing radial load, and evenly distribute the load to multiple rollers, thereby greatly improving the radial load capacity of the bearing. Compared with ball bearings of the same size, the radial load capacity of single row cylindrical roller bearings is increased by 1.5 to 3 times.

2. The rollers in single row cylindrical roller bearings are usually arranged in parallel, and spacers or isolation blocks are installed between the rollers to prevent the rollers from tilting or rubbing against each other. This design not only ensures the stable operation of the rollers, but also prevents the increase of rotational torque, further improving the radial load capacity of the bearing. The design of the cage also plays a key role. The cage can effectively fix the position of the rollers and prevent the rollers from being dislocated or falling off during operation, thereby ensuring the stability and reliability of the bearing.

3. The rib and end face design of single-row cylindrical roller bearings also have an important impact on their radial load-bearing capacity. According to whether the ring has ribs or not, single-row cylindrical roller bearings can be divided into different types such as NU, NJ, NUP, N, and NF. These different types of bearings differ in the design of ribs and end faces, but they are all aimed at improving the radial load-bearing capacity of the bearings. The inner and outer rings of NU and N bearings can move relative to each other in the axial direction, so they can be used as free-end bearings; while NJ and NF bearings can withstand a certain degree of axial load in one direction. These designs make the bearings more flexible and stable when bearing radial loads.

4. In addition to the above design features, the material selection and heat treatment process of single-row cylindrical roller bearings also have an important impact on their radial load-bearing capacity. High-quality bearing materials have higher strength and hardness and can withstand greater loads and impacts. Reasonable heat treatment processes can improve the internal structure of the material and improve the comprehensive performance of the material. These measures are helpful to improve the radial load-bearing capacity of the bearing.

Single-row cylindrical roller bearings have excellent radial load bearing capacity, mainly due to the advantages of their roller and raceway line contact design, roller arrangement and cage design, rib and end face design, material selection and heat treatment process. These advantages enable single-row cylindrical roller bearings to exhibit higher load-bearing capacity and longer service life when bearing radial loads. Single-row cylindrical roller bearings play an important role in various mechanical equipment that need to withstand large radial loads.