Part Number S9KDD, Fafnir® Miniature Ball Bearings (S..K) On The Timken Company

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All Product Types > ENGINEERED BEARINGS > Ball Bearings > Deep Groove Ball Bearings > Fafnir® Miniature Ball Bearings (S..K) > Part Number S9KDD


	Part Number S9KDD, Fafnir® Miniature Ball Bearings (S..K)

Fafnir® Extra Small Imperial Ball Bearings (S..K)

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Radial ball bearings consist of an inner and outer ring with a cage containing a complement of precision balls. The standard Conrad-type bearing has a deep-groove construction capable of handling radial and axial loads from either direction in versatile designs that permit relatively high-speed operation.

In addition to standard single-row deep groove bearings, Timken offers special designs, including a maximum capacity series and an extra large (XLS) radial series bearing.

Size range: 3 mm - 600 mm (0.12 in. - 23.62 in.) bore

Unit of Measure: Imperial Metric Both

Specifications · Dimensions · Basic Load Ratings · Factors · Abutment and Fillet Dimensions

Specifications

Design Units		Imperial

Ball Type		STEEL

Manufacturing Part Number		S9KDD Z5 FS50000;

Dimensions

d - Bore		7/8 in

D - Outer Diameter		1.8750 in 47.63 mm

Bearing Width		0.375 in 9.53 mm

Basic Load Ratings

C0 - Static Radial Rating		1780 lbf 7930 N

Ce - Dynamic Radial Rating		3480 lbf 15500 N

Factors

Limiting Speed (Grease)		8357 rpm

Limiting Speed (Oil)		9750 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius

0.03 in
0.8 mm

r - Outer Ring "To Clear" Radius¹

0.03 in
0.800 mm

da - Inner Ring Backing Diameter

1.0984 in
27.90 mm

Da - Outer Ring Backing Diameter

1.6496 in
41.90 mm

¹ These maximum fillet radii will be cleared by the bearing corners.

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Part Number S9KDD, Fafnir® Miniature Ball Bearings (S..K)

Design Units

Ball Type

Manufacturing Part Number

d - Bore

D - Outer Diameter

Bearing Width

C0 - Static Radial Rating

Ce - Dynamic Radial Rating

Limiting Speed (Grease)

Limiting Speed (Oil)

R - Inner Ring "To Clear" Radius

r - Outer Ring "To Clear" Radius1

da - Inner Ring Backing Diameter

Da - Outer Ring Backing Diameter

r - Outer Ring "To Clear" Radius¹