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Small silver metal ring bearing with double shields visible

Timken

Timken 9104KDD Radial Ball Bearing 6004 Double Shielded 20mm Bore

SKU CH-MG7C-KHN90

Double-shielded 6004 radial ball bearing with 20 mm bore, 42 mm outside diameter and 12 mm width, rated ABEC 1 with 10 400 N dynamic load capacity

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision rotation from ABEC 1 tolerance
  • 20 mm bore fits standard 6004 housings
  • Double shields keep lubricant in and contaminants out
  • 10 400 N dynamic load capacity handles heavy radial forces
  • Alloy steel rings and balls resist wear over time

Bearing Identity

The Timken 9104KDD is a 6004-series radial ball bearing with a 20 mm bore and 42 mm outside diameter. It uses alloy-steel rings and balls with a steel cage, double-shielded closure and ABEC-1 tolerance. The bearing is supplied new and pre-lubricated with pillow-block grease for metric-system assemblies.

Fitment Guidance

This unit suits maintenance crews and OEM builders who need a standard 6004 envelope with double shields and a +0/-0.010 mm bore tolerance. It is not intended for applications that demand a higher ABEC rating, a contact-seal arrangement, a different bore size or a retaining-ring groove.

Sustained Operation

Under continuous load the bearing carries a dynamic radial capacity of 10,400 N while the steel cage and alloy-steel raceways maintain clearance within the stated fillet radius of .6 mm. The factory grease fill and double shields resist contamination during extended runs without relubrication intervals defined here.

Highlights

  • Precision rotation from ABEC 1 tolerance
  • 20 mm bore fits standard 6004 housings
  • Double shields keep lubricant in and contaminants out
  • 10 400 N dynamic load capacity handles heavy radial forces
  • Alloy steel rings and balls resist wear over time

Specifications

BrandTIMKEN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

What shaft diameter does the 20 mm bore of the 9104KDD bearing fit?

The bore diameter is 20 mm with a tolerance of +0/-0.010 mm, so it fits a 20 mm shaft within that tolerance range.

Will the 12 mm outer ring width of the 6004 bearing match the housing depth of my existing equipment?

The outer ring width is 12 mm; verify your housing depth against this dimension before installation.

How can I confirm the 9104KDD bearing is operating correctly after installation?

Check for smooth rotation without binding, listen for unusual noise, and monitor operating temperature during initial run-in.

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