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Timken 308WDDN radial ball bearing 6308 double shielded metal finish

Timken

Timken 308WDDN Radial Ball Bearing 6308 Double Shielded Collectible

SKU CH-TMR9-1B4P5

Radial ball bearing with 40 mm bore, 90 mm outside diameter and double shields

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • 40 mm bore fits standard 6308 housings
  • 90 mm outside diameter matches industry dimensions
  • Double shields protect rolling elements from contaminants
  • 64 400 N dynamic load rating handles heavy radial forces
  • Alloy-steel rings and balls resist wear under load

What It Is

Timken 308WDDN is a new double-shielded radial ball bearing carrying industry number 6308. It is built from alloy-steel rings and balls with a steel cage and Quaker Ferrocote lubricant. The unit suits collectors of industrial hardware and maintenance teams needing a direct 6308 replacement.

Who It Suits

Buyers who want a metric 6308 bearing with 40 mm bore, 90 mm outside diameter and 23 mm outer-ring width will find the correct dimensions here. The ABEC-1 rating and +0/-0.012 mm bore tolerance meet standard interchange requirements. Collectors who need a different closure type, a higher precision class or a non-metric series should look at something else.

Dynamic Radial Load Capacity 64 400 N

The bearing carries a dynamic radial load capacity of 64 400 N, which determines whether it can handle the forces in a given application. A 1.5 mm fillet radius and the absence of a retaining ring are also fixed by the 6308 envelope. Match these figures to the design load before fitting.

Highlights

  • 40 mm bore fits standard 6308 housings
  • 90 mm outside diameter matches industry dimensions
  • Double shields protect rolling elements from contaminants
  • 64 400 N dynamic load rating handles heavy radial forces
  • Alloy-steel rings and balls resist wear under load

Specifications

BrandTIMKEN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How do I press the 40 mm bore onto the shaft without damaging the 1.5 mm fillet radius?

Use a sleeve that contacts only the inner ring and apply even pressure until the bearing seats against the shaft shoulder; never hammer the outer ring or shields.

When will the Quaker Ferrocote lubricant need replenishment on this 6308 bearing?

The double shields retain the factory grease for the bearing's rated life under normal loads; relubrication is not practical without removing the shields.

At what load does the 64 400 N dynamic capacity limit appear during continuous operation?

Sustained radial loads approaching 64 400 N will reach the dynamic rating first, reducing calculated life; keep actual loads well below this value for longevity.

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