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Cylindrical Roller Bearing Nnu4952/w33

Supplier From China
Sep-30-17

Double Row Cylindrical Roller Bearing NNU4952/W33
Double Row Cylindrical Roller Bearing
Part No.: NNU4952/W33

Inner Ring: 260.000mm
Outer Ring: 360.000mm
Width: 100.000mm
Outside Diameter of Inner Ring: 289.000mm
Chamfer: 2.1
Basic Dynamic Load Rating: 981.75KN
Basic Static Load Rating: 2310KN
Limited Speed (rpm): 1512(grease)/2016(oil)
Gross Weight: 29.2kg
Brass Cage, With An Oil Groove and Lubricating Holes

Double row cylindrical roller bearings are divided into bearings with cylindrical bore and tapered bore (add K behind bearing type). This type of roller bearings have compact structure, good rigidity, heavy load carrying capacity, and little distortion under loads. Because of their second row of rollers, double row cylindrical roller bearings are suitable for heavy radial loads. Double row cylindrical roller bearings are applicable for the machine tool spindle. Tapered inner bore could fine adjust clearance, simplify positioning fixture and be convenient to mount and dismount.

Depending on the existence of ribs on their rings, double row cylindrical roller bearings are classified into NN, NNU types.

Type NN double row cylindrical roller bearings have two integral flanges on the inner ring, a flangeless outer ring and a center flange in the middle. Double-row cylindrical roller bearings permit axial displacement in double directions of the housing relative to the shaft.

Type NNU double row cylindrical roller bearings have two integral flanges on the outer ring, a non-contacting inner ring and a center flange in the middle. Double row cylindrical roller bearings permit axial displacement in double directions of the housing relative to the shaft. Therefore, this type of bearing is suitable to be used as non-locating bearings.


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Spherical roller bearings have two roller is mainly exposed to the diameter of a load, but also can withstand the axial load any direction. High radial load capacity, especially suitable for the work overload or vibration loads, but can not afford pure axial load. Kind of bearing outer ring raceway is spherical, so the good performance of aligning, can compensate concentricity error. Spherical roller bearings have two rows of symmetrical spherical roller, a common spherical outer raceway, inner ring raceway two bearing axis is tilted at an angle, aligning performance, when the axis of the force bearings can still be used normally when curved or install a different mind-mind with the bearing dimension series generally permissible aligning angle is 1 to 2.5 degrees, the load bearing capacity of the type, in addition to radial loads the outer bearing can withstand two-way axial load, with good impact resistance, in general, self-aligning roller bearings that allow the work of low speed.

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Inner Ring: 130.000mm
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Spherical roller bearing consists of an outer ring with spherical raceway and an inner ring with double-raceway, one or two cages, and one group of spherical rollers. Due to the center of spherical raceway of outer ring which is coinciding with the center of bearing, this makes it have a self-aligning capability. If there is a deflection of the shaft or housing or misalignment of their axes, it is automatically corrected the excessive force which is not applied to bearings. Spherical roller bearing has a high load carrying capacity for radial load and axial load in two directions. Spherical roller bearing is especially suitable for carrying heavy loads and impact loads, but this type of bearing permits a lower limiting speed. The permissible aligning angle of the spherical roller bearing working in normal conditions is 1°~2.5°. If bearings of this type have seals, then this function would be reduced. Spherical roller bearings are widely used in Steel Industry, Mining & Construction, Papermaking Machinery, Wind Turbines, Gearboxes, Electric Motors, Pumps & Compressors and Injection Molding Machines, etc.

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Spherical roller bearings with hardened steel cages deliver greater fatigue strength, increased wear-resistance and tougher protection against shock and acceleration.

Spherical roller bearings with brass cages provide extra strength and durability in the most unrelenting conditions, including extreme shock and vibration, high acceleration forces and minimal lubrication.

Spherical roller bearings are available with a cylindrical bore for cylindrical type mounting, a tapered bore for tapered type mounting. To order tapered bore spherical roller bearing, add the suffix K� ( 1:12 ) or K30� ( 1:30 ) to bearing number (e.g., 23152K, 24172CAK30).

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Model Number
22317,3617
Structure
spherical roller bearing
Type
roller
Bore Size
85mm
Outside Diameter
180mm
width
60mm
Seals Type
Open
Material
Chrome Steel,Stainless steel
Cage material
Nylon ,steel , brass
Clearance
C0,C2,C3,C4,C5
Vibration
Zv1,Zv2 and Zv3
Precision Rating
P0,P6,P5
Greese
As you requirement, such as SRL ,PS2, Alvania R12 and so on .
Number of Row
Double Row
Guarantee
One year.
Application
Home appliances, low noise and high speed electric motors,
automotive components, pumps, machinery.
Certifications
ISO 9001:2008,BV,CE
Package
1,barreled package+outer carton+pallets
2,single box+outer carton+pallets
3,tube package+middle box+outer carton+pallets
4,According to your's requirement
Place of Origin
China (Mainland)
MOQ
1PC
Service
(1) Prompt Delivery
(2) OEM
(3) Good Service Offered
(4) Buyer Label Offered, Design service offered
Payment Term
T/T,L/C, Western Union
Port
Qingdao or Tianjing or Shanghai port, as your demand
Details
1. Fast delivery
2. Competitive price
3. High quality and long life

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