Double Row Cylindrical Roller Bearings Nnu4920, Nnu4921, Nnu4922, Nnu4924, Nnu4926, Nnu4928, Nnu4930, Nnu4932, Nnu4934, Nnu4936, Nnu4938, M K W33 P5 P4 Grade

• Customization: Available
• Rolling Body: Roller Bearings
• The Number of Rows: Double
• Model NO.: NNU4920-NNU4938
• Outer Dimension: Large (200-430mm)
• Material: Bearing Steel
• Spherical: Non-Aligning Bearings
• Load Direction: Radial Bearing
• Separated: Separated
• Transport Package: Plastic Bag/Box/Carton/Pallet
• Specification: NNU4920-NNU4938
• Trademark: TIK or your mark
• Origin: China
• HS Code: 8482500090
• Production Capacity: 50000 PCS Per Month

Product Description

Cylindrical roller bearings for main spindles NNU series
Cylindrical roller bearings for main spindles are used when the very highest precision is required under very high radial load. Typical areas of application include machine tools and printing machinery. The bearings facilitate bearing arrangements with very high precision, high radial rigidity and very high load carrying capacity. In machine tool building, they provide radial support for the main spindle.

These are single or double row cylindrical roller bearings with a largely tapered bore (taper 1:12) and a removable outer ring, which can thus be mounted separately from the normal bearing package. The inner ring is only removable in the case of series NNU49.

The bearings are available in various designs which are matched to different requirements. For example, hybrid cylindrical roller bearings with half the number of rollers can achieve extremely high speeds.


 

Boundary dimensions (mm)				Bearing NO.		Basic Dynamic Load Rating	Basic Static Load Rating	Mass
d	D	B	r (min)	Cylindrical bore	Tapered bore	Cr(N)	Cor(N)	Kg
25	47	16	0.6	NN3005	NN3005K	25700	30000	0.123
30	55	19	1	NN3006	NN3006K	30500	37000	0.199
35	62	20	1	NN3007	NN3007K	39000	50000	0.258
40	68	21	1	NN3008	NN3008K	43000	55500	0.312
45	75	23	1	NN3009	NN3009K	49500	65500	0.405
50	80	23	1	NN3010	NN3010K	52500	72500	0.454
55	90	26	1.1	NN3011	NN3011K	69000	96500	0.651
60	95	26	1.1	NN3012	NN3012K	73000	106000	0.704
65	100	26	1.1	NN3013	NN3013K	76500	116000	0.758
70	110	30	1.1	NN3014	NN3014K	97000	148000	1.04
75	115	30	1.1	NN3015	NN3015K	96000	149000	1.14
80	125	34	1.1	NN3016	NN3016K	118000	186000	1.52
85	130	34	1.1	NN3017	NN3017K	125000	201000	1.61
90	140	37	1.5	NN3018	NN3018K	142000	228000	2.07
95	145	37	1.5	NN3019	NN3019K	150000	246000	2.17
100	140	40	1.1	NNU4920	NNU4920K	155000	305000	1.77
100	150	37	1.5	NN3020	NN3020K	156000	265000	2.26
105	145	40	1.1	NNU4921	NNU4921K	161000	325000	1.85
105	160	41	2	NN3021	NN3021K	197000	320000	2.89
110	150	40	1.1	NNU4922	NNU4922K	165000	335000	1.93
110	170	45	2	NN3022	NN3022K	227000	375000	3.68
120	165	45	1.1	NNU4924	NNU4924K	183000	360000	2.65
120	180	46	2	NN3024	NN3024K	238000	405000	3.98
130	180	50	1.5	NNU4926	NNU4926K	275000	565000	3.55
130	200	52	2	NN3026	NN3026K	283000	475000	5.92
140	190	50	1.5	NNU4928	NNU4928K	281000	585000	3.8
140	210	53	2	NN3028	NN3028K	297000	515000	6.44
150	210	60	2	NNU4930	NNU4930K	350000	715000	5.95
150	225	56	2.1	NN3030	NN3030K	335000	585000	7.81
160	220	60	2	NNU4932	NNU4932K	365000	760000	6.25
160	240	60	2.1	NN3032	NN3032K	370000	660000	8.92
170	230	60	2	NNU4934	NNU4934K	375000	805000	6.6
170	260	67	2.1	NN3034	NN3034K	450000	805000	12.6
180	250	69	2	NNU4936	NNU4936K	480000	1020000	9.5
180	280	74	2.1	NN3036	NN3036K	560000	995000	16.6
190	260	69	2	NNU4938	NNU4938K	485000	1060000	10
190	290	75	2.1	NN3038	NN3038K	590000	1080000	17.5
200	280	80	2.1	NNU4940	NNU4940K	570000	1220000	10.1
200	310	82	2.1	NN3040	NN3040K	650000	1170000	21.6
220	300	80	2.1	NNU4944	NNU4944K	595000	1330000	15.5
220	340	90	3	NN3044	NN3044K	810000	1480000	28.4
240	320	80	2.1	NNU4948	NNU4948K	610000	1410000	17
240	360	92	3	NN3048	NN3048K	850000	1600000	31.8
260	360	100	2.1	NNU4952	NNU4952K	925000	2100000	28.3
260	400	104	4	NN3052	NN3052K	1080000	2070000	46
280	380	100	2.1	NNU4956	NNU4956K	950000	2230000	30.3
280	420	106	4	NN3056	NN3056K	1080000	2080000	49.6
300	420	118	3	NNU4960	NNU4960K	1220000	2880000	46.7
300	460	118	4	NN3060	NN3060K	1430000	2740000	68.7
320	440	118	3	NNU4964	NNU4964K	1270000	3050000	49.6
320	480	121	4	NN3064	NN3064K	1430000	2750000	74

FAQ

Q1: Are you a manufacturer or a trading company?
A: We have been a professional manufacturer of bearings since 1995 with ISO9001:2015 certificate.

Q2: How is the quality level of your bearings?
A: Our bearings are made of supreme GCr15 bearing steel and are produced with the first class workmanship. The tolerance grade could be P0, P6, P5, P4. The vibration level could be Z1V1, Z2V2, Z3V3.

Q3: Can I get samples to see the quality?
A: Yes, samples are free, but the courier charge shall be borne by the buyer.

Q4: Could you offer OEM service and print my logo/mark on the products?
A: Yes, we could. Please send us your mark registration files, we shall print your logo/mark on the bearings and package.

Q5: How is the lead time?
A: For regular items that are in stock, we could make shipment immediately right after your payment. If the goods are not in stock, our production time is from 15 to 45 days according to the quantity.

Q6: What if I receive defective product for my order?
A: All our bearings are 100% inspected strictly before packing. If you receive any defective product, please provide us photos or videos to show the problem. After confirmation, we shall send you the new product as replacement free of charge.

Q7: What is your term of payment?
A: Term of payment is negotiable. Usually it is 30% deposit in advance, and the balance 70% is paid when the goods are ready for shipment.