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Single-Row Deep Groove Ball Bearings with Snap Ring and Shield (ZNR, 2ZNR) d 10-60 mm

止め輪・シールド付き単列深溝玉軸受 / SKF (Official website) / Listed on page 89 of the document

A series of single-row deep groove ball bearings with inner diameters of 10-60 mm, equipped with a snap ring and shields. Available with a single-side shield (ZNR) or a double-side shield (2ZNR).

Last verified: (date the content was verified against the source document)

Single-Row Deep Groove Ball Bearings with Snap Ring and Shield (ZNR, 2ZNR) d 10-60 mm on page 89 of SKF "SKF 深溝玉軸受 製品カタログ(設計およびバリエーション)"
Source: SKF「SKF 深溝玉軸受 製品カタログ(設計およびバリエーション)」page 89
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Specifications

Inner diameter d 10~60 mm
Outer diameter D 30~110 mm
Width B 9~31 mm
Basic dynamic load rating Cr 5.4~55.3 kN
Basic static load rating C0r 2.36~38 kN
Limiting speed (grease lubrication) 8 000~56 000 r/min
Mass 0.032~1.8 kg

How to choose Rolling Bearings

Points to check when selecting, with the values for this product (Single-Row Deep Groove Ball Bearings with Snap Ring and Shield (ZNR, 2ZNR) d 10-60 mm).

  1. 1. Bore and housing bore dimensions

    This product: Inner diameter d 10~60 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 5.4~55.3 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 2.36~38 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) 8 000~56 000 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

Bearings combining a snap ring and shields, offered in two types: single-side shielded and double-side shielded. The limiting speed of double-side shielded types is said to be approximately 80% of the listed value. SKF Explorer bearings are distinguished by an asterisk (*).

Features

  • With snap ring
  • Single-side or double-side shield selectable

FAQ

Q. What are the ranges of bore diameter, outer diameter, and width for single-row deep groove ball bearings with snap ring and shield (ZNR, 2ZNR)?
A. The bore diameter d is 10-60 mm, the outer diameter D is 30-110 mm, and the width B is 9-31 mm.
Q. What is the difference between the single-side shielded and double-side shielded types of single-row deep groove ball bearings with snap ring and shield (ZNR, 2ZNR)?
A. Single-side shielded types are ZNR, and double-side shielded types are 2ZNR. The limiting speed of double-side shielded types is said to be approximately 80% of the listed value.
Q. What are the basic dynamic load rating and basic static load rating of single-row deep groove ball bearings with snap ring and shield (ZNR, 2ZNR)?
A. The basic dynamic load rating Cr is 5.4-55.3 kN, and the basic static load rating C0r is 2.36-38 kN.
Q. What are the limiting speed under grease lubrication and the mass of single-row deep groove ball bearings with snap ring and shield (ZNR, 2ZNR)?
A. The limiting speed under grease lubrication is 8 000-56 000 r/min, and the mass is 0.032-1.8 kg.

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

Source documents

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