Good Quality KM NU Series Cylindrical Roller Bearing NU240ECM

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High precision, Low price, good quality.


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Product Description

KM cylindrical roller bearing, the material is 100% chrome steel, the rings must through heat treatment, so that the bearing have black corner. The bearing cage are brass cage and iron cage. The bearing quality is P6, P5. Looking forward to cooperation with you.

Cylindrical roller bearings are separable, easy to mount and dismount, feature more outstanding especially when they are used on bearings requiring interference fit between inner and outer rings with the shaft and housing. Cylindrical roller bearing is contacted with the revision line between the rollers and the raceway, which is of elimination of edge stress. Comparing with the ball bearings with same boundary dimensions, cylindrical roller bearings have larger radial carrying capacity. In structure, this type of bearing is more suitable for high speed rotation.

The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life.

Cylindrical roller bearings are also available in sealed or split designs. In sealed bearings, the rollers are protected from contaminants, water and dust, while providing lubricant retention and contaminant exclusion. This provides lower friction and longer service life. Split bearings are intended primarily for bearing arrangements which are difficult to access, such as crank shafts, where they simplify maintenance and replacements. 

When the outer diameter is less than (inclusive) 400mm, solid brass cage or steel press cage are adopted for single row cylindrical roller bearing. When the outer diameter is more than 400mm, brass cage and pin-type cage are adopted for four row cylindrical roller bearing.  

Product Parameters

Product name cylindrical roller bearing 
Brand name KM/OEM
Structure roller bearing 
Type NU NNU NF and so on
Material Chrome steel, 
Hardness HRC60-HRC63
Precision P5 P6
Country of original made in China
Quality standard ISO9001:2008
Delivery date within 3-25 working days after receipt the deposit money
Payment terms A: 100% T/T in advance
B: 30%T/T in advance. 70% against copy of B/L
C: Western Union
D: Paypal
Features High precision, Low price, good quality
Website: Http://www.kmbearings.com     http://kmbearings.en.alibaba.com/
Cage Material Bearing steel/brass
Main market Mideast; Canda; Southeast Asia; South America and other countries all over the world
Company name Liaocheng Kunmei Bearing CO., LTD    

Structural and Features

The raceway and rolling body of cylindrical roller bearing have geometric shapes. After the improved design, the bearing capacity is higher. The new structure design of the roller end face and the roller end face not only improves the bearing axial bearing capacity, but also improves the lubrication condition of the roller end face and the contact area of the roller end face and the roller end face, and improves the bearing's performance.

Features and Benefits

● High load carrying capacity

● High stiffness

● Low friction

● Accommodate axial displacement

Except for bearings with flanges on both the inner and outer rings.

● The open flange design 

Together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capability.

● Long service life

The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection.

● Enhanced operational reliability

The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.

● Separable and interchangeable

The separable components of XRL cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.


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