NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7220AW ,D=100

Description

NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7220AW ,D=100

 

Bearing
Numbers
Boundary Dimensions
(mm)
Basic Load Ratings
(kN)
Limiting Speeds
(min-1)
Factor

f0
Mass
(kg)
approx.
d D B r
min.
r1
min.
Cr C0r Grease Oil
7220AW 100 180 34 2.1 1.1 144 126 3200 4300 ?€ 3.22

 

 

DESIGN, TYPES, AND FEATURES

SINGLE-ROW ANGULAR CONTACT BALL BEARINGS

Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used.
Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information).
Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages.
Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.

 

MATCHED ANGULAR CONTACT BALL BEARINGS

The types and features of matched angular contact ball bearings are shown in Table 2.

 

Table 2  Types and Features of Matched Angular Contact Ball Bearings

Figure 

Arrangement 

Features

Back-to-Back
(DB)
(Example)
7208 A DB

   Radial loads and axial loads in both
directions can be sustained.

   Since the distance between the
effective load centers a0 is large,
this type is suitable if moments are applied.

Face-to-Face
(DF)
(Example)
7208 B DF

   Radial loads and axial loads in both
directions can be sustained.

   Compared with the DB Type, the distance
between the effective load centers is small,
so the capacity to sustain moments is inferior.

Tandem
(DT)
(Example)
7208 A DT

   Radial loads and axial loads in one
direction can be sustained.

   Since two bearings share the axial load,
this arrangement is used when the load in one direction is heavy.

 

 

?¡Formulation of Bearing Designations

Single-Row Matched Angular Contact Ball Bearings

? Bearing type

7 : Single-row angular contact ball bearings, matched angular contact ball bearings

?¡Dimension Series

2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series

?¢Bore number 

Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm
Over 04, Bearing bore Bore number ×5 (mm) 

?£Contact angle

C : 15°, A5 : 25°, A : 30°, B : 40°

?¤Internal design

EA : High Load Capacity

?¥Cage

W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),
No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,
T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage

?¦Arrangement

SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),
DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement

?§Preload / Axial

   internal clearance

EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preload
Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,
CNB : CN Clearance equivalent (universal arrangement)

 

 DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS

Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.

 

?¡Formulation of Bearing Designations

Double-Row Angular Contact Ball Bearings

 

? Bearing type

5 : Double-row angular contact ball bearings

?¡Dimension Series

2 : 02 Series   3: 03 Series

?¢Bore number 

03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm
04 and over: Bore diameter bore number ×5 (mm)

?£Internal design

 ZZ: Steel shield on both sides, DDU: Rubber contact seal on
both sides VV: Rubber noncontact seal on both sides

?¤Seals/shields

 Z: Steel shield on one sides, DU: Rubber contact seal on one side,
V: Rubber non-contact seal on one side

?¥Grease*

NS7: NS HI-LUBE

Product form

NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7220AW ,D=100   Bearing Numbers Boundary Dimensions (mm) Basic Load... Read more

SKU: 7220AW
Barcode: 7220AW

$147.04 Excl. VAT

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    Description

    NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7220AW ,D=100

     

    Bearing
    Numbers
    Boundary Dimensions
    (mm)
    Basic Load Ratings
    (kN)
    Limiting Speeds
    (min-1)
    Factor

    f0
    Mass
    (kg)
    approx.
    d D B r
    min.
    r1
    min.
    Cr C0r Grease Oil
    7220AW 100 180 34 2.1 1.1 144 126 3200 4300 ?€ 3.22

     

     

    DESIGN, TYPES, AND FEATURES

    SINGLE-ROW ANGULAR CONTACT BALL BEARINGS

    Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used.
    Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information).
    Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages.
    Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.

     

    MATCHED ANGULAR CONTACT BALL BEARINGS

    The types and features of matched angular contact ball bearings are shown in Table 2.

     

    Table 2  Types and Features of Matched Angular Contact Ball Bearings

    Figure 

    Arrangement 

    Features

    Back-to-Back
    (DB)
    (Example)
    7208 A DB

       Radial loads and axial loads in both
    directions can be sustained.

       Since the distance between the
    effective load centers a0 is large,
    this type is suitable if moments are applied.

    Face-to-Face
    (DF)
    (Example)
    7208 B DF

       Radial loads and axial loads in both
    directions can be sustained.

       Compared with the DB Type, the distance
    between the effective load centers is small,
    so the capacity to sustain moments is inferior.

    Tandem
    (DT)
    (Example)
    7208 A DT

       Radial loads and axial loads in one
    direction can be sustained.

       Since two bearings share the axial load,
    this arrangement is used when the load in one direction is heavy.

     

     

    ?¡Formulation of Bearing Designations

    Single-Row Matched Angular Contact Ball Bearings

    ? Bearing type

    7 : Single-row angular contact ball bearings, matched angular contact ball bearings

    ?¡Dimension Series

    2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series

    ?¢Bore number 

    Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm
    Over 04, Bearing bore Bore number ×5 (mm) 

    ?£Contact angle

    C : 15°, A5 : 25°, A : 30°, B : 40°

    ?¤Internal design

    EA : High Load Capacity

    ?¥Cage

    W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),
    No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,
    T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage

    ?¦Arrangement

    SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),
    DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement

    ?§Preload / Axial

       internal clearance

    EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preload
    Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,
    CNB : CN Clearance equivalent (universal arrangement)

     

     DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS

    Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.

     

    ?¡Formulation of Bearing Designations

    Double-Row Angular Contact Ball Bearings

     

    ? Bearing type

    5 : Double-row angular contact ball bearings

    ?¡Dimension Series

    2 : 02 Series   3: 03 Series

    ?¢Bore number 

    03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm
    04 and over: Bore diameter bore number ×5 (mm)

    ?£Internal design

     ZZ: Steel shield on both sides, DDU: Rubber contact seal on
    both sides VV: Rubber noncontact seal on both sides

    ?¤Seals/shields

     Z: Steel shield on one sides, DU: Rubber contact seal on one side,
    V: Rubber non-contact seal on one side

    ?¥Grease*

    NS7: NS HI-LUBE

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