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FAFNIR SUPERPRECISION BEARINGS

Light 2MM200WI Series

Superprecision Bearings

FTF

Fundamental Train Frequency: The frequency at which the retainer will operate.

BSF

Ball Spin Frequency: The frequency at which a single defect on a rolling element will be detected.

BPFO

Ball Pass Frequency Outer: The frequency at which a single defect in the outer race will be detected.

BPFI

Ball Pass Frequency Inner: The frequency at which a single defect in the inner race will be detected.

2MM205WI

0.4008

2.3347

4.8091

7.1909

0.5992

2MM206WI

0.4001

2.3182

4.8007

7.1993

0.5999

2MM207WI

0.3997

2.3104

4.7965

7.2035

0.6003

2MM208WI

0.3980

2.2638

4.3777

6.6223

0.6020

2MM209WI

0.4058

2.4683

5.2757

7.7243

0.5942

Bearing Number

FTF

BSF

BPFO

BPFI

FTF

Fundamental Train Frequency (Inner Rotation)

Ball Spin Frequency

Ball Pass Frequency Outer

Ball Pass Frequency Inner

Fundamental Train Frequency (Outer Rotation)

2MM200WI 2MM201WI 2MM202WI 2MM203WI 2MM204WI

0.3668 0.3699 0.3855 0.3861 0.3857

1.6722 1.7226 1.9898 2.0025 2.0000

2.9345 3.3290 3.8552 3.8609 3.8570

5.0655 5.6710 6.1448 6.1391 6.1430

0.6332 0.6301 0.6145 0.6139 0.6143

2MM215WI

0.4177

2.8554

6.2659

8.7341

0.5823

2MM216WI

0.4164

2.8064

6.2462

8.7538

0.5836

2MM217WI

0.4152

2.7649

6.2281

8.7719

0.5848

2MM218WI

0.4142

2.7301

5.7984

8.2016

0.5858

2MM219WI

0.4132

2.6992

5.7853

8.2147

0.5868

FREQUENCY COEFFICIENTS

2MM210WI

0.4126

2.6716

5.7757

8.2243

0.5874

2MM211WI

0.4110

2.6263

5.7543

8.2457

0.5890

2MM212WI

0.4098

2.5901

5.7376

8.2624

0.5902

2MM213WI

0.4130

2.6906

5.7818

8.2182

0.5870

2MM214WI

0.4135

2.7082

5.7891

8.2109

0.5865

2MM220WI

0.4125

2.6714

5.7744

8.2256

0.5875

2MM222WI

0.4110

2.6263

5.7543

8.2457

0.5890

2MM224WI

0.4131

2.6927

5.7830

8.2170

0.5869

2MM226WI

0.4192

2.9059

7.1260

9.8740

0.5808

2MM230WI

0.4124

2.6714

6.1865

8.8135

0.5876

102800

59

SUPERPRECISION BEARINGS

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