China Supplier Double Row Cylindrical Roller Bearing Nu for Large and Medium Motor

• Rolling Body: Roller Bearings
• The Number of Rows: Double
• Outer Dimension: Small and Medium-Sized (60-115mm)
• Material: Bearing Steel
• Spherical: Non-Aligning Bearings
• Load Direction: Radial Bearing
• Model NO.: cylindrical roller bearings
• Separated: Unseparated
• Accuracy Class: P0
• Speed: 800rpm
• Internal Diameter: 20mm
• Working Temperature: -10ºC~60ºC
• External Diameter: 47mm
• Inner Ring Material: Gcr15
• Precision: P0, P6, P5, P4, P2 or as Requested
• Transport Package: OEM
• Specification: Standard Size
• Trademark: oem
• Origin: China
• Production Capacity: 10000000

Product Description

Product Description

Cylindrical roller bearings	NU1004 series	NU1004 1005 1006 1008  1010 1011 1012 1013 1014 1018 1021 1022 1024 1026 1028 3028 1030 1032 1034 1036 1038 1040 1044 1048 1052 1056 1060 1064 1068 1072 1076 1080
	NN3005	NN3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3024 3026 3028 3030 3032 3034 3036 3038 3040 3044 3048 3052 3056 3060 3064 3068 3072 3076 3080 3092
	N/RNU/NJ/NF/NUP/NU202	202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 224 226 228 230 232 234 236 238 240 244 248 252 260
	NU/N/NF/NJ/RNU/NUP 303	303 304 305 306 307 308309 310 311 312 313 314 315 316 317 318 319 320 321 322 324 326 328 330332 334 336 338 340 344 348 360
	NJ202	NJ202 203 204 205 206 207 208 209 210 211 212 213 214 215
	NF203	203 204 205 206 207 208 209 210 211 212 213 214 215
	NUP	202 203 204 205 206 207 208 209 210 211 212 213 214 215

Cylindrical Roller Bearings:
Cylindrical rollers and raceways are linear contact bearings. Load capacity, mainly bear radial load. The friction between the rolling element and the rib of the ring is small, which is suitable for high-speed rotation. According to whether the ring has ribs or not, it can be divided into single row cylindrical roller bearings such as NU, NJ, NUP, N, NF, and double row cylindrical roller bearings such as NNU and NN. The bearing is a structure in which the inner ring and the outer ring can be separated.
Cylindrical roller bearings without ribs on the inner or outer ring, the inner and outer rings can move relative to the axial direction, so they can be used as free end bearings. Cylindrical roller bearings with double ribs on one side of the inner ring and outer ring and a single rib on the other side of the ring can withstand a certain degree of axial load in one direction. Generally, a steel stamping cage is used, or a copper alloy turning solid cage is used. However, there are also part of the use of polyamide forming cage.
Cylindrical roller bearings are separable bearings, which are very convenient to install and disassemble. Cylindrical roller bearings can withstand large radial loads and are suitable for use in high-speed operation.
Cylindrical roller bearings are separable bearings, which are very convenient to install and disassemble. Cylindrical roller bearings can withstand larger diameters
To the load and suitable for use in high-speed operation.
This type of bearing allows the angular error (inclination) between the axis of the inner ring and the axis of the outer ring to be very small, only 2' to 4'. Therefore, the machining accuracy of the shaft and the bearing seat is relatively high. Otherwise, uneven load or stress concentration will easily occur at the contact part of the raceway. However, the occurrence of stress concentrations can be reduced by modifying the contact busbars of the rollers or raceways.
Cylindrical roller bearings can be divided into different structures such as single-row, double-row and multi-row cylindrical roller bearings according to the number of rows of rolling elements installed. Different structural bearings are also reflected in the design of the position of the rib. Among the commonly used cylindrical roller bearings are the following
Several forms:
Single-row cylindrical roller bearings: Single-row cylindrical roller bearings are separable bearings, which are easy to install and disassemble. Both rings can be tightly fitted, and the contact line between the rollers and the raceway is corrected to reduce stress concentration.
Double-row cylindrical roller bearings: Double-row cylindrical roller bearings are floating bearings, and their separability makes installation and disassembly very convenient. Both ferrules can have a tight fit. Double row cylindrical roller bearings are hardly allowed to have a tilt angle.
Single row cylindrical roller bearings
N, NU type
The outer ring of the N-type bearing has no ribs, and there are ribs on both sides of the inner ring. Displacement in both axial directions between the shaft and the bearing housing can be allowed. The NU type bearing has ribs on both sides of the outer ring and no ribs on the inner ring. It is also possible to allow displacement of the shaft relative to the bearing housing in both axial directions. Therefore, this type of structure is suitable for use as a loose end bearing.
NJ, NF type
NJ type bearings have ribs on both sides of the outer ring, and ribs on one side of the inner ring. Can withstand a certain amount of unidirectional axial load.
NF type has ribs on one side of the outer ring and ribs on both sides of the inner ring. It can also bear a certain amount of unidirectional axial load. Therefore, this type of structure is suitable for use as a unidirectional axial locating bearing.
NUP, NFP type
NUP type bearings have ribs on both sides of the outer ring, a (fixed) single rib on one side of the inner ring, and a separable flat rib on the other side. Can withstand a certain amount of bidirectional axial load.
The bearing outer ring of the NFP type has a (fixed) single rib on one side, and a separable flat rib on the other side, with ribs on both sides of the inner ring. It can also withstand a certain amount of bidirectional axial load. This type of structural bearing can limit the displacement of the shaft relative to the bearing seat in both axial directions. Therefore, it is suitable for use as a fixed end bearing.
NH (NJ+HJ) type
The NH type bearing is the combination of the NJ type bearing and the HJ type inclined retaining ring. Because the inner ring of the NUP type bearing is short, and the flat retaining ring is not fixed, it is inconvenient to use, while the NH type bearing can use the width of the entire inner ring of the NJ type bearing to maintain a tighter fit with the shaft. Moreover, the NH type bearing is more convenient to install and disassemble.
NH type bearings can limit the displacement of the shaft relative to the bearing seat in both axial directions. Therefore, it is suitable as a fixed end Bearing use
 

Model no	d(mm)	D(mm)	T(mm)	W(KG)
NU204	20	47	14	0.11
NU205	25	52	15	0.137
NU206	30	62	16	0.211
NU207	35	72	17	0.3
NU208	40	80	18	0.382
NU209	45	85	19	0.438
NU210	50	90	20	0.493
NU211	55	100	21	0.648
NU212	60	110	22	0.84
NU213	65	120	23	1.07
NU214	70	125	24	1.16
NU215	75	130	25	1.25
NU216	80	140	26	1.5
NU217	85	150	27	2.5
NU218	90	160	30	2.35
NU219	95	170	32	2.8
NU220	100	180	34	3.42
NU221	105	190	36	4.07
NU222	110	200	38	4.73
NU224	120	215	40	5.65
NU226	130	230	40	6.5
NU228	140	250	42	8.2
NU230	150	270	45	10.4
NU232	160	290	48	14.4
NU234	170	310	52	17.7
NU236	180	320	52	18.4
NU238	190	340	55	22.3
NU240	200	360	58	26.6
NU244	220	400	65	37.3
NU248	240	440	72	50.5
NU252	260	480	80	67.1

Bearing No.			Boundary Dimensions (mm)			Basic Load Rating (KN)		Mass
			d	D	B	C	Co	kg
N308EM	NU308EM	NJ308EM	40	90	23	76.8	77.8	0.65
N309EM	NU309EM	NJ309EM	45	100	25	93.0	98.0	0.95
N310EM	NU310EM	NJ310EM	50	110	27	105.0	112.0	1.20
N311EM	NU311EM	NJ311EM	55	120	29	128.0	138.0	1.61
N312EM	NU312EM	NJ312EM	60	130	31	142.0	155.0	1.94
N313EM	NU313EM	NJ313EM	65	140	33	170.0	188.0	2.42
N314EM	NU314EM	NJ314EM	70	150	35	195.0	220.0	2.90
N315EM	NU315EM	NJ315EM	75	160	37	228.0	260.0	3.59
N316EM	NU316EM	NJ316EM	80	170	39	245.0	270.0	3.90
N317EM	NU317EM	NJ317EM	85	180	41	265.0	280.0	5.20
N318EM	NU318EM	NJ318EM	90	190	43	290.0	320.0	6.17
N319EM	NU319EM	NJ319EM	95	200	45	320.0	350.0	6.92
N320EM	NU320EM	NJ320EM	100	215	47	355.0	380.0	8.24
N322EM	NU322EM	NJ322EM	110	240	50	415.0	470.0	11.20
N326EM	NU326EM	NJ326EM	130	280	58	615.0	735.0	19.30
N328EM	NU328EM	NJ328EM	140	300	62	665.0	795.0	23.70
N330EM	NU330EM	NJ330EM	150	320	65	715.0	855.0	26.80

 

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FAQ

Q: Are you trading company or manufacturer ?
A: We are factory. Welcome to visit our factory.

Q: How to get price ?
A: Please send inquiry directly. Our salesman replys very fast.

Q: Do you provide Free Samples ?
A: Yes, we could offer you free samples, but do not pay the cost of freight.

Q: What's the MOQ ?
A: The MOQ depends on bearing's model number and price.Usually the total cost will be $1000 at least.

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Q: How long is your lead-time?
A: Generally it is 2 to 4 days if the goods are in stock, or it will be about 6 to 15 days depends on quantity.