Double row precision cylindrical roller bearings

Model:	NN3000
Brand:	DRZ
Origin:	Made In China
Category:	Industrial Supplies / Machine Hardware / Insulation
Label:	cylindrical , precision , drz bearings
Price:	¥100 / pc
Min. Order:	10 pc

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Product Description

Particularly where large bearings are involved, it is often necessary to make provisions duringthe design stage, to facilitate mounting and dismounting of a bearing, or even to make it possible at all.

For super precision cylindrical roller bearings with a bore diameter d > 80 mm, DRZ recommends

the oil injection method. With the oil injection method, oil under high pressure is injected via ducts and distribution grooves

between the bearing and bearing seat to form an oil film . This oil film separates the mating surfaces and considerably reduces the friction between them and virtually eliminates the risk of damaging the bearing or the spindle shaft. This method is typically used when mounting or dismounting bearings directly on tapered shaft seats. Where bearings with a cylindrical bore are concerned, the oil injection method can only be used for dismounting. To apply the oil injection method, the spindle must contain ducts and grooves .

Bearings	Demensions							RPM			stiffness		Weight
	d	D	b	Rmin	E	n	s	Oil		Lub.	Rr	Ra	≈
	Mm							KN			r/min		Kg
NN3006K	30	55	19	1	48.5	4.8	1.4	29	34		16000	19000	0.19
NN3007K	35	62	20	1	55	4.8	1.4	35.5	44		14000	17000	0.25
NN3008K	40	68	21	1	61	4.8	1.4	45	58.5		12000	15000	0.31
NN3009K	45	75	23	1	67.5	4.8	1.7	54	72		11000	14000	0.4
NN3010K	50	80	23	1	72.5	4.8	1.7	57	80		10000	13000	0.41
NN3011K	55	90	26	1.1	81	4.8	1.9	72	100		9000	11000	0.65
NN3012K	60	95	26	1.1	86.1	4.8	1.9	75	110		8500	10000	0.67
NN3013K	65	100	26	1.1	91	4.8	1.9	76.5	116		8000	9500	0.74
NN3014K	70	110	30	1.1	100	6.5	2.3	98	150		7000	8500	1.07
NN3015K	75	115	30	1.1	105	6.5	2.3	100	156		6700	8000	1.13
NN3016K	80	125	34	1.1	113	6.5	2.5	120	186		6300	7500	1.56
NN3017K	85	130	34	1.1	118	6.5	2.5	125	200		6000	7000	1.64
NN3018K	90	140	37	1.5	127	6.5	2.5	140	225		5600	6700	2.13
NN3019K	95	145	37	1.5	132	6.5	2.5	143	236		5300	6300	2.23
NN3020K	100	150	37	1.5	137	6.5	2.5	146	245		5300	6300	2.32
NN3021K	105	160	41	2	146	6.5	2.6	190	310		4800	5600	2.96
NN3022K	110	170	45	2	155	6.5	2.8	220	360		4500	5300	3.76
NN3024K	120	180	46	2	165	6.5	3.1	232	390		4300	5000	4.1
NN3026K	130	200	52	2	182	9.5	3.3	290	500		3800	4500	6.04
NN3028K	140	210	53	2	192	9.5	3.3	300	520		3600	4300	6.48
NN3030K	150	225	56	2.1	206	9.5	3.7	335	585		3400	4000	7.88
NN3032K	160	240	60	2.1	219	9.5	4.2	375	670		3200	3800	9.57
NN3034K	170	260	67	2.1	236	9.5	4.5	450	800		3000	3600	13
NN3036K	180	280	74	2.1	255	12.2	4.8	570	1000		2800	3400	17
NN3038K	190	290	75	2.1	265	12.2	4.8	585	1040		2600	3200	18
NN3040K	200	310	82	2.1	282	12.2	5.3	655	1200		2400	3000	23
NN3044K	220	340	90	3	310	15	5.5	800	1460		2200	2800	32.9
NN3048K	240	360	92	3	330	15	6	850	1560		2000	2600	36
NN3052K	260	400	104	4	364	15	6.5	1060	2000		1900	2400	48