The Timken Company - Fafnir® Concentric Locking Collar Ball Bearings

Smarter Bearing Selection Is Here

The Timken ^® Syber ^® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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Analyze Bearing Performance in an Application with Timken ^® Syber ^® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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Simplified Gear Force Analysis

Alex Waye, Timken Application Engineer, shows you how to instantly compute tangential, radial, and axial forces for better design decisions.

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Unit of Measure

Items	GC1008KRRB Fafnir® Concentric Locking Collar Ball Bearings	GC1010KRRB Fafnir® Concentric Locking Collar Ball Bearings	GCE17KRRB Fafnir® Concentric Locking Collar Ball Bearings	GC1011KRRB Fafnir® Concentric Locking Collar Ball Bearings	GC1012KRRB Fafnir® Concentric Locking Collar Ball Bearings
Manufacturing Part Number	N/A
Series	N/A Industrial
Shaft Size d	N/A 1/2 in	N/A 5/8 in	N/A 17 mm	N/A 11/16 in	N/A 3/4 in
Bore Type	N/A Cylindrical bore
Bearing Type	N/A Ball Bearing
Outside Diameter D	N/A 40 mm1.575 in	N/A 40 mm1.575 in	N/A 40 mm1.575 in	N/A 40 mm1.575 in	N/A 47 mm1.850 in
Inner Ring Width B	N/A
Outside Ring Width C	N/A 12 mm0.472 in	N/A 12 mm0.472 in	N/A 12 mm0.472 in	N/A 12 mm0.472 in	N/A 14 mm0.551 in
Radius r	N/A 0.6 mm0.024 in
Center of Bearing from End S	N/A 11.1 mm0.438 in	N/A 11.1 mm0.438 in	N/A 11.1 mm0.438 in	N/A 11.1 mm0.438 in	N/A 12.3 mm0.484 in
Set Screw Size	N/A 10-32	N/A 10-32	N/A M5x0.8	N/A 10-32	N/A 10-32
Number of Set Screws	N/A 2
Angle between Set Screws	N/A 120 º
Dimension d1	N/A 34.1 mm0.344 in	N/A 34.1 mm0.344 in	N/A 34.1 mm0.344 in	N/A 34.1 mm0.344 in	N/A 38.1 mm1.5 in
Dimension M	N/A 2.72 mm0.107 in	N/A 2.72 mm0.107 in	N/A 2.72 mm0.107 in	N/A 2.72 mm0.107 in	N/A 3.43 mm0.135 in
Dimension B1	N/A 26.59 mm1.047 in	N/A 26.59 mm1.047 in	N/A 26.59 mm1.047 in	N/A 26.59 mm1.047 in	N/A 30.96 mm1.219 in
Dimension B2	N/A
Dimension D1	N/A
Dimension T	N/A
Dimension K	N/A
Dimension F	N/A
Dimension G	N/A
Dimension L	N/A
Dimension O	N/A 14.71 mm0.579 in	N/A 14.71 mm0.579 in	N/A 14.71 mm0.579 in	N/A 14.71 mm0.579 in	N/A 20.68 mm0.814 in
Static Load Rating	N/A 4700 N1060 lbf	N/A 4700 N1060 lbf	N/A 4700 N1060 lbf	N/A 4700 N1060 lbf	N/A 6200 N1400 lbf
Dynamic Load Rating	N/A 10600 N2360 lbf	N/A 10600 N2360 lbf	N/A 10600 N2360 lbf	N/A 10600 N2360 lbf	N/A 14300 N3200 lbf
Material	N/A Bearing Steel
Lubrication Type	N/A Relubricatable
O.D. Type	N/A Spherical OD
Sub Series	N/A GC..KRRB
Seal Type	N/A Shroud Seal
Collar No.	N/A C203	N/A C203	N/A C203	N/A C203	N/A C204
Basic Outer Ring Size	N/A 203	N/A 203	N/A 203	N/A 203	N/A 204
Weight	N/A 0.154 Kg0.34 lb	N/A 0.145 Kg0.320 lb	N/A 0.122 Kg0.27 lb	N/A 0.122 Kg0.27 lb	N/A 0.204 Kg0.45 lb