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13906240166 Bearing consultation hotline 400-928-0383 13906240166

苏州北人轴承销售有限公司

冶金行业轴承一站式采购平台 Chinese own one-stop procurement platform for bearings in the metallurgical industry
北人轴承-径向负荷,内圈互换

National Service Hotline

400-928-0383
  • 四列圆柱滚子轴承外圈组件
Four-row cylindrical roller bearing outer ring assembly

Four-row cylindrical roller bearings are mainly used in cold rolling, hot rolling mills, billet rolling mills and other rolling mill machinery. The bearings have a separate structure. The bearing rings and rolling element components can be easily separated

Therefore, the bearing is easy to clean, inspect or install.

National Hotline

400-928-0383

/ Introduction Product introduction
Type introduction Type introduction
NN, NNU type

NN type bearings have no ribs on the outer ring, and there are ribs on both sides of the inner ring and a middle rib on the middle. It can allow two directions of displacement between the shaft and the bearing seat in the axial direction.
NNU bearings have ribs on both sides of the outer ring and middle ribs in the middle, and no ribs on the inner ring. It can allow two directions of displacement between the shaft and the bearing seat in the axial direction.
Therefore, this type of structure is suitable as a movable end bearing.
The cages of this type of bearings are mostly made of car-made solid cages.

NNF type

NNF type bearings are double row full complement cylindrical roller bearings. The bearing consists of an outer ring with a middle rib and two inner rings with a double rib. The rollers are guided by the ribs of the inner ring, and the two inner rings are fixed together by a fastening ring. In addition to bearing large radial and axial loads, this structure can also bear overturning moments, so it is often used as a fixed-end bearing. NNF bearings adopt contact seals on both sides. The bearing is filled with grease. The working temperature of the grease is -50 ° C to + 110 ° C. However, due to the limitation of the sealing material, the working temperature of the bearing is limited to -40 ° C to + 80 ° C. Under good working conditions, NNF bearings with seals do not need to be maintained. If the bearings are exposed to water vapor or polluted the environment for a long time, and they are running at medium or high speed, they can be adjusted through the oil grooves and holes on the outer ring The bearings are relubricated.

Product characteristics Cylindrical roller bearing

The roller and the raceway are in line contact or repaired line contact, and the radial bearing capacity is large, which is suitable for bearing heavy and impact loads.

The friction coefficient is small, suitable for high speed, and the limiting speed is close to deep groove ball bearings.

N type and NU type can move axially, can adapt to the change of the relative position of the shaft and the housing caused by thermal expansion or installation error, and can be used as free end support.

The machining requirements of the shaft or seat hole are relatively high. The relative deflection of the outer ring axis after the bearing is installed must be strictly controlled to avoid causing contact stress concentration.

The inner or outer ring can be separated for easy installation and removal.

四列圆柱滚子轴承外圈组件
Main thoroughfare Main thoroughfare

Large and medium-sized electric motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, reduction gearboxes, rolling mills, vibrating screens, and lifting and transportation machinery.

  • 四列圆柱滚子轴承
  • 四列圆柱滚子轴承
  • 四列圆柱滚子轴承
Company advantage Company advantage
生产实力
production ability

China's bearing industry strength brand, 5 major production bases, 5,000 R & D and production teams, annual output of 400 million sets

The introduction of foreign high-quality materials, automatic production equipment for bearing products; spectrum analysis, vibration testing, roughness and roundness testing of bearings

研发实力
R & D strength

More than 100 patent certificates for materials, heat treatment, processing technology and bearing design

National Enterprise Technology Center, multiple provincial high-tech enterprises, post-doctoral research workstations

产品品质
product quality

Raw material of die-casting bearing steel, 3 quality inspection standards, service life up to 7 years

The inner diameter of the product is minimum 5mm, maximum 12mm, low noise, good airtightness, suitable for high speed environment

无忧服务
Worry-free service

Rolling technical support team provides one-on-one service to provide you with exclusive bearing solutions within 24 hours

4-year warranty, customer service team to solve customer problems in real time, to solve your worries

Hot product
轧机压下机构用满装推力圆锥滚子轴承

Full-load thrust tapered roller bearing for rolling mill reduction mechanism

This type of bearing is a separate bearing, which is divided into single, double and four-row tapered roller bearings according to the number of rows of rolling elements in the bearing. The clearance of the double-row and four-row tapered roller bearings has been given according to user requirements when the product leaves the factory, and does not require user adjustment.
调心滚子轴承

Spherical roller bearing

Spherical roller bearings have two rows of rollers, which mainly bear a load of a diameter and can also bear axial loads in any direction. With high radial load capacity, it is especially suitable for working under heavy or vibration loads, but cannot withstand pure axial loads. This type of bearing's outer ring raceway is spherical, so its self-aligning performance is good, and it can compensate for coaxiality errors. Spherical roller bearings have two rows of symmetrical spherical rollers, the outer ring has a common spherical raceway, the inner ring has two raceways inclined at an angle to the bearing axis, and has good self-aligning performance. When the shaft is stressed The bearing can still be used normally when it is bent or installed with different concentricity. The self-aligning performance varies with different bearing size series. Generally, the permitted self-aligning angle is 1 ~ 2.5 degrees. This type of bearing has a large load capacity and can bear radial loads. The outer bearing can also withstand the axial load acting in both directions, and has better impact resistance
四列圆柱滚子轴承外圈组件

Four-row cylindrical roller bearing outer ring assembly

Four-row cylindrical roller bearings are mainly used in cold rolling, hot rolling mills, billet rolling mills and other rolling mill machinery. The bearings have a separate structure. The bearing rings and rolling element components can be easily separated. Therefore, the bearing cleaning, inspection or Installation and disassembly are very convenient.
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Four-row short cylindrical roller inner ring

This type of bearing is a separate bearing, which is divided into single, double and four-row tapered roller bearings according to the number of rows of rolling elements in the bearing. The clearance of single-row tapered roller bearings needs to be adjusted by the user during installation.
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