for another 90 years?Why buy this bearing - E. Fox Engineers Catalogues/SKF/Bearing Data PDFs/Self... · SKF FAG ZKL KOYO NTN NSK SNR ... SKF FAG ZKL KOYO NTN NSK SNR [µ m/s] Investigated

Why buy this bearing for another 90 years?

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Dist

ributors 65%

Electrical 2%

Others 11%

Metalworking 2%

Mining & Construction 2%

Material handling 2%

Textile 5%

Agriculture 4%

Food & Beverage 4%

Automotive 3%

Sales per segment– Self-Aligning Ball Bearings

Self-aligning ball bearingsPubl. No. 4847 E

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Sales per Country– Self-Aligning Ball Bearings

Den

mar

k 2% Others 28%

Austria

2%Spain 2%

Netherl

ands 3%UK 3%

Sweden 5%

France 6%Can

ada

2%T

haila

nd 2

%

USA 6%

Brazil 7%

India 7%It

aly

10%

Germany 15%

Self-aligning ball bearingsPubl. No. 4847 E

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Decisive features of Self-aligning ball bearings

High speed performance High machine productivity

Minimum maintenance needed Economic operation

Self-aligning Lighter and more compact machines

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Low frictionSelf-aligningball bearings

Outer ring: Point contactInner ring: Elliptical contact

Deep grooveball bearings

Outer and inner ring:Elliptical contact

0,0018

0,0015

0,0010

Coefficient of friction

Self-aligningball bearings

Deep grooveball bearings

Spherical rollerbearings

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Low friction

Low operating

cost

Longer relubrication

intervals

Lowermaintenance

cost

Lessenergy

consumption

Highmachine

productivity

Very highspeed rating

Less needfor cooling

Low operating temperature

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Seating out of square

Seatings offsetDeflected shaft Deflected house

Types of misalignment

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Self-alignment

Friction freeadjustment

No influence on bearing life

Self-aligning ball bearings

Stress in bearing

Shorter bearing life

Y-unitsVarying

load

Varying load

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Self-aligning ball bearingsPubl. No. 4847 E

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Environmentally friendly

Low friction

andminimum lubricant

consumptionsaves

recources

SKF

ISO14001

Excellent minimal load performance

Self-aligning ball bearingsPubl. No. 4847 E

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Separators

Alfa Laval

Self-aligning ball bearingsPubl. No. 4847 E

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Demand for very high speed

and self-aligning bearingdue to flexing rotor

Conveyors

Jokan systems A/S

Self-aligning ball bearingsPubl. No. 4847 E

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Demand for

minimummaintenance

Tractor mowers

Toro

Demand for minimum maintenance

and self-aligning bearings

due to flexing structure

Self-aligning ball bearingsPubl. No. 4847 E

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Clean air fans

Comefri

Self-aligning ball bearingsPubl. No. 4847 E

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Demand forlow noise

and vibration

Vegetable mulchers

Berti Macchine Agricole

Self-aligning ball bearingsPubl. No. 4847 E

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Demand for minimum maintenance

and self-aligning bearings due to flexing structures

Spinningmachines

Toyoda Automatic Loom Works, Ltd

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Demand for quick and safe

mounting

Self-aligning ball bearings in harmonic combination with

CARBTM and spherical roller bearings

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Speed performance

Speed ratings for

different bearing types

15000

10000

5000

0

n [r/min]

Grease Oil

Y-unit on h11 shaft

Y-unit on h6 shaft

Deep groove ball bearing 6206

Spherical roller bearing 22206 E

Self-aligning ball bearing 2206 E

630

6300

7500

9500

12000

13000

Self-aligning ball bearingsPubl. No. 4847 E

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Relubrication interval- comparison with other bearing types

0

5

10

15

20

25

Number of stops for relubrication during 5 years

3

21

Self-aligning ball bearing 2206 E

Spherical roller bearing 22206 E

Deep groove ball bearing 6206

Y-unit YAT 206

Example:Fr = 1190 NFa = 100 Nn = 2000 r/min

Self-aligning ball bearingsPubl. No. 4847 E

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Bearing friction

Self-aligning ball bearingsPubl. No. 4847 E

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80

60

70

40

50

10

20

30

0

Fri

ctio

nal m

omen

t [N

mm

]

1000 2000 3000 4000 5000 6000 7000

Deep groove ball bearing 6210

Self-aligning ball bearing 1210Standard (36 balls)

Self-aligning ball bearing 1210Special (18 balls)

Speed [r/min]

Vibration

Self-aligning ball bearingsPubl. No. 4847 E

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246

120

70

80

100

90

110

60

50

20

10

40

30

0SKF FAG ZKL KOYO NTNNSKSNR

[µm/s]

Investigated bearing size: 2206

Low band

120

70

80

100

90

110

60

50

20

10

40

30

0SKF FAG ZKL KOYO NTNNSKSNR

[µm/s] Medium band

Q77 = 90Q66 = 90

Q77 = 125

Q66 = 45

Vibration

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180

170

160

120

70

80

100

90

110

60

50

20

10

40

30

0SKF FAG ZKL KOYO NTNNSKSNR

[µm/s]

Investigated bearing size: 2206

High band

120

70

80

100

90

110

60

50

20

10

40

30

0SKF FAG ZKL KOYO NTNNSKSNR

[µm/s] Peak band

Q66 = 90

Q77 = 180

Q77 = 63

Q66 = 31,5

Bearing clearance

Self-aligning ball bearingsPubl. No. 4847 E

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40

50

30

20

10

0SKF FAG NSK ZKL SNR

Rad

ial c

lear

ance

[µm

]

Uppertolerance

limit

Lowertolerance

limit

Investigated bearing size: 2206

Self-alignmentSelf-aligning capability

of different bearing types

2

3

1

Max. misalignment [degrees]

Least favourable bearing size

Y-unit Deep groove ball bearing

Spherical roller bearing

Self-aligning ball bearing

1,5

0,2

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Most favourable bearing size

00,04

Basic designs

OpenExtendedinner ringSealed

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Sealed bearings greased for life

Convenientto use

Environmentallyfriendly

Longer bearingservice life

Protected fromcontaminants

during handlingand operation

Nitrilerubber

Steelplate

Maintenance-free

No grease leakageinto the

environment

Self-aligning ball bearingsPubl. No. 4847 E

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SKF E design

Moreballs

and/or

Largerballs

Up to 30%

higherload

carrying capacity

Longer service life

or

possible to downsize application

Self-aligning ball bearingsPubl. No. 4847 E

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Cage designs

Polyamide 6.6 Pressed steel Machined brass

Self-aligning ball bearingsPubl. No. 4847 E

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Long bearing

service life

Polyamide cage

Increased carrying capacity

Smoothrunning

Favourablein vibratingapplications

Allowsoptimiseddesign (E)

Very highspeed rating

Lightand

flexible

Gooddamping

propertiesLow

operating temperature

Self-aligning ball bearingsPubl. No. 4847 E

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Size range of SKF self-aligning ball bearings

Smallest: 19 mm / 0,009 kgLargest : 240 mm / 17,5 kg

Self-aligning ball bearingsPubl. No. 4847 E

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23-2RS1231312 112 22 22-2RS1

SKF self-aligning ball bearing series

Self-aligning ball bearingsPubl. No. 4847 E

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The product

range

00

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

20

22

24

26

12 22 13 23 14 112

Series

Design

Size E E E-2

RS1

E E E-2

RS1

E

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K

K K

K

K

K

K

K

K

K

K

K

K

K KK

135 5

6

7

8

9

126

127

108

129

Small sizes

Size Bore (mm)

*

K

K

Sealed design

* Not E design

Open design

K Also with tapered bore

Self-aligning ball bearingsPubl. No. 4847 E

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Long bearing

service life

Wide choice and

design flexibility

Axially freeor fixed

Widest rangeof seals

Grease or oillubrication

Precision in manufacturing

Excellent bearingrunning accuracy

...for better bearing performance

SKF housings

Self-aligning ball bearingsPubl. No. 4847 E

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SKF self-aligning ball bearing

kit

Self-aligning ball bearingsPubl. No. 4847 E

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ü Quick and safe mounting

ü One item to plan, source and stock

ü Always the right components

ü All components in SKF quality

Different methods of mounting

Interference fit(Cylindrical bore)

Set screw locking(Wider inner ring; loose fit)

Adapter sleeve(Tapered bore)

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Easy mounting on adapter sleeve...with SKF hook spanner (Method A)

1 3 4

5 6

9 10 118

2

7

180° 120° 90°

70°

Re-position the hook spanner

Bore diam.

20-50 mm

Bore diam.

55-70 mm

Bore diam.75-110 mm

Self-aligning ball bearingsPubl. No. 4847 E

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Because it is cost efficient!The SKF self-aligning ball bearing makes it possible to * increase machine productivity* minimise maintenance* reduce machine weight and make machines more compact

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