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FAFNIR SUPERPRECISION BEARINGS

Medium 3MM300WI 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.

3MM301WI

0.3678

1.5949

2.9425

5.0575

0.6322

3MM302WI

0.3928

2.0149

3.9277

6.0723

0.6072

3MM303WI

0.3653

1.5578

2.5571

4.4429

0.6347

3MM304WI

0.3701

1.6268

2.9611

5.0389

0.6299

3MM305WI

0.3761

1.7147

3.3850

5.6150

0.6239

BSF

BPFO

BPFI

FTF

Ball Spin Frequency

Ball Pass Frequency Outer

Ball Pass Frequency Inner

Fundamental Train Frequency (Outer Rotation)

3MM306WI

0.3802

1.7812

3.4214

5.5786

0.6198

3MM307WI

0.3874

1.9101

3.8736

6.1264

0.6126

3MM308WI

0.3894

1.9470

3.8936

6.1064

0.6106

3MM309WI

0.3910

1.9772

3.9096

6.0904

0.6090

3MM310WI

0.3920

2.0019

3.9205

6.0795

0.6080

FREQUENCY COEFFICIENTS

Bearing FTF Number

Fundamental Train Frequency (Inner Rotation)

3MM311WI

0.3931

2.0231

3.9314

6.0686

0.6069

3MM312WI

0.3941

2.0412

3.9405

6.0595

0.6059

3MM313WI

0.3947

2.0567

4.3415

6.6585

0.6053

3MM314WI

0.3954

2.0705

4.3491

6.6509

0.6046

3MM319WI

0.3927

2.0144

3.9270

6.0730

0.6073

102800

73

SUPERPRECISION BEARINGS

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