Cylindrical Roller Bearing

1. Cylindrical roller bearings are available in many designs, dimension series and sizes. The majority are single row bearings with a cage. Single and double row full complement bearings (without cage) complete the standard assortment for general engineering. Bearings with a cage can accommodate heavy radial loads and operate at high speeds. Full complement bearings are suitable for very heavy radial loads at moderate speeds.

2. In cylindrical roller bearings, the rollers are a key component. Their geometry, the so-called logarithmic profile, provides an optimum stress distribution in the contact zones in the bearing. Their surface finish maximizes lubricant film formation and optimises rolling motion of the rollers. The benefits derived from this compared with traditional designs include enhanced operational reliability and a greater insensitivity to misalignment.

3. The ring with the integral flanges together with the cylindrical roller and cage assembly can be separated from the other ring. This results in easy mounting and dismounting, particularly where the load conditions are such that interference fits are required for both rings.

Boundary dimension (mm)				Basic load ratings(kN)		Limiting speeds(rpm)		Mass(Kg)	Bearing Number
d	D	B	rsmin	Cr	Cor	Grease	Oil	(Approx.)
25	47	16	0.6	25.8	30.0	14,000	17,000	0.124	NN3005
25	47	16	0.6	25.8	30.0	14,000	17,000	0.121	NN3005K
30	55	19	1	31.0	37.0	12,000	15,000	0.199	NN3006
30	55	19	1	31.0	37.0	12,000	15,000	0.193	NN3006K
35	62	20	1	38.0	47.5	11,000	13,000	0.242	NN3007
35	62	20	1	38.0	47.5	11,000	13,000	0.235	NN3007K
40	68	21	1	43.5	55.5	9,700	11,000	0.312	NN3008
40	68	21	1	43.5	55.5	9,700	11,000	0.303	NN3008K
45	75	23	1	52.0	68.5	8,800	10,000	0.405	NN3009
45	75	23	1	52.0	68.5	8,800	10,000	0.393	NN3009K
50	80	23	1	53.0	72.5	8,000	9,400	0.433	NN3010
50	80	23	1	53.0	72.5	8,000	9,400	0.419	NN3010K
55	90	26	1.1	69.5	96.5	7,300	8,600	0.651	NN3011
55	90	26	1.1	69.5	96.5	7,300	8,600	0.631	NN3011K
60	95	26	1.1	71.0	102	6,700	7,900	0.704	NN3012
60	95	26	1.1	71.0	102	6,700	7,900	0.683	NN3012K
65	100	26	1.1	75.0	111	6,200	7,300	0.758	NN3013
65	100	26	1.1	75.0	111	6,200	7,300	0.735	NN3013K
70	110	30	1.1	94.5	143	5,800	6,800	1.04	NN3014
70	110	30	1.1	94.5	143	5,800	6,800	1.01	NN3014K

75	115	30	1.1	96.5	149	5,400	6,300	1.14	NN3015
75	115	30	1.1	96.5	149	5,400	6,300	1.11	NN3015K
80	125	34	1.1	116	179	5,100	5,900	1.52	NN3016
80	125	34	1.1	116	179	5,100	5,900	1.47	NN3016K
85	130	34	1.1	122	194	4,800	5,600	1.61	NN3017
85	130	34	1.1	122	194	4,800	5,600	1.56	NN3017K
90	140	37	1.5	143	228	4,500	5,300	2.07	NN3018
90	140	37	1.5	143	228	4,500	5,300	2.01	NN3018K
95	145	37	1.5	146	238	4,300	5,000	2.17	NN3019
95	145	37	1.5	146	238	4,300	5,000	2.1	NN3019K
100	150	37	1.5	153	256	4,000	4,800	2.26	NN3020
100	150	37	1.5	153	256	4,000	4,800	2.19	NN3020K
105	160	41	2	198	320	3,800	4,500	2.89	NN3021
105	160	41	2	198	320	3,800	4,500	2.8	NN3021K
110	170	45	2	229	375	3,600	4,300	3.69	NN3022
110	170	45	2	229	375	3,600	4,300	3.56	NN3022K
120	180	46	2	233	390	3,300	3,900	3.98	NN3024
120	180	46	2	233	390	3,300	3,900	3.83	NN3024K
130	200	52	2	284	475	3,100	3,600	5.92	NN3026
130	200	52	2	284	475	3,100	3,600	5.71	NN3026K

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