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Hybrid Cylindrical Roller Bearing NU 10 Series

NU 10xx ML/HC5C3・ECP/HC5C3・ECM/HC5C3・M/HC5C3 / SKF (Official website)

Cylindrical roller bearings with bore diameters of 40 to 100 mm. Hybrid construction supports high-speed rotation. Basic load ratings and limiting speeds are listed for each dimension series.

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Specifications

Inner diameter d 40～100 mm
Outer diameter D 68～150 mm
Width B 15～35 mm
Basic dynamic load rating Cr 25.5～209 kN
Basic static load rating C0r 26.5～228 kN
Fatigue Load Limit Pu 3.35～29 kN
Reference rotational speed 4300～12000 r/min
Limiting speed (grease lubrication) 5600～18000 r/min
Mass 0.19～2.15 kg

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Hybrid Cylindrical Roller Bearing NU 10 Series).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 40～100 mm

    Select the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.

  2. 2. Dynamic load rating based on life calculation

    This product: Basic dynamic load rating Cr 25.5～209 kN

    The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.

  3. 3. Margin for static and shock loads

    This product: Basic static load rating C0r 26.5～228 kN

    The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.

  4. 4. Operating speed and lubrication method

    This product: Limiting speed (grease lubrication) 5600～18000 r/min

    The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.

  5. 5. Precision grade and internal clearance

    Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.

  6. 6. Materials and lubrication suited to the environment

    For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.

This guide was written by AI based on the listed products' documents and specification items.

About Rolling Bearings and all products

Description

Cylindrical roller bearings with bore diameters of 40 to 100 mm (hybrid type; the notation HC5 is presumed to indicate a configuration using ceramic rolling elements). For each outer diameter and width, the data lists dynamic load rating, static load rating, fatigue load limit, reference speed, limiting speed, and mass.

Features

  • Compatible with high-speed rotation
  • Load and speed data available for each dimension series

FAQ

Q. What is the range of bore diameter and outer diameter for the NU 10 Series (hybrid cylindrical roller bearings)?
A. Bore diameter d ranges from 40 to 100 mm, and outer diameter D ranges from 68 to 150 mm. Width B ranges from 15 to 35 mm.
Q. What is the range of basic dynamic load rating and basic static load rating for the hybrid cylindrical roller bearings in the NU 10 Series?
A. Basic dynamic load rating Cr ranges from 25.5 to 209 kN, and basic static load rating C0r ranges from 26.5 to 228 kN. Values are listed for each dimension series.
Q. Can the NU 10 Series be used for high-speed rotation? What is the speed range?
A. It has a hybrid construction compatible with high-speed rotation. Reference speed ranges from 4300 to 12000 r/min, and limiting speed (grease lubrication) ranges from 5600 to 18000 r/min.
Q. What are the fatigue load limit and mass of the NU 10 Series?
A. Fatigue load limit Pu ranges from 3.35 to 29 kN, and mass ranges from 0.19 to 2.15 kg.

Written by AI based on the content of the source documents.

Source documents

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