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FAFNIR SUPERPRECISION BEARINGS

Medium 2MM300WI 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.

FREQUENCY COEFFICIENTS

Bearing Number

FTF Fundamental Train Frequency (Inner Rotation)

BSF Ball Spin Frequency

BPFO Ball Pass Frequency Outer

BPFI Ball Pass Frequency Inner

FTF Fundamental Train Frequency (Outer Rotation)

2MM306WI

0.3724

1.7666

3.3514

5.6486

0.6276

2MM307WI

0.3799

1.8962

3.7990

6.2010

0.6201

2MM308WI

0.3820

1.9332

3.8203

6.1797

0.6180

2MM309WI

0.3837

1.9636

3.8373

6.1627

0.6163

2MM310WI

0.3851

1.9889

3.8510

6.1490

0.6149

2MM301WI

0.3594

1.5791

2.8751

5.1249

0.6406

2MM302WI

0.3861

2.0024

3.8609

6.1391

0.6139

2MM303WI

0.3564

1.5411

2.4946

4.5054

0.6436

2MM304WI

0.3618

1.6111

2.8941

5.1059

0.6382

2MM305WI

0.3681

1.6997

3.3127

5.6873

0.6319

2MM311WI

0.3861

2.0099

3.8606

6.1394

0.6139

2MM312WI

0.3870

2.0281

3.8704

6.1296

0.6130

2MM313WI

0.3879

2.0440

4.2665

6.7335

0.6121

2MM314WI

0.3884

2.0576

4.2729

6.7271

0.6116

2MM319WI

0.3857

2.0013

3.8570

6.1430

0.6143

102800

71

SUPERPRECISION BEARINGS

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