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Transparent radial ball bearing, double shielded, alloy steel rings and cage, 40 mm bore, 52 mm outside diameter, 7 mm width

Tritan

Tritan 61808 ZZ PRX Radial Ball Bearing Collectible

SKU CH-69JZ-648SZ

A radial ball bearing with 40 mm bore, 52 mm outside diameter and 7 mm width, double-shielded for oily environments and rated ABEC 1 with AISI 52100 alloy-steel balls

  • TypeBearings, V-belts & Power Transmission Equipment
  • ColorTransparent
  • Precision fit for 40 mm shafts
  • Durable alloy steel rings and AISI 52100 balls
  • Double shields keep lubricant in and contaminants out
  • Metric 61808/6808 sizing fits standard housings
  • Polyrex EM grease handles oily environments

Product Identity

This is a new Tritan radial ball bearing identified by industry number 61808 and cross-reference 6808. It is a precision rolling-element component built for metric-dimensioned assemblies.

Fit and exclusions

The bearing suits shafts of 40 mm bore where a 52 mm outside diameter and 7 mm outer ring width are required. It is not for applications needing a different bore, a larger outside diameter or a greater width.

Decisive specification

The double-shielded closure retains the Polyrex EM lubricant and excludes coarse contamination in oily or greasy environments. This sealing arrangement determines whether the bearing matches the intended service conditions.

Highlights

  • Precision fit for 40 mm shafts
  • Durable alloy steel rings and AISI 52100 balls
  • Double shields keep lubricant in and contaminants out
  • Metric 61808/6808 sizing fits standard housings
  • Polyrex EM grease handles oily environments

Specifications

BrandTRITAN
TypeBearings, V-belts & Power Transmission Equipment
ColorTransparent

Questions about this item

How much heat will the 61808 bearing generate running all day in an oily environment?

With ABEC 1 precision and Polyrex EM lubricant the 61808 bearing runs cool in oily conditions, its steel cage and double shields keeping friction low during continuous operation.

What shaft and housing sizes must I already have to install this 40 mm bore bearing?

You need a 40 mm shaft with a tolerance of +0 / -0.012 mm and a 52 mm housing bore to press-fit the 61808 bearing correctly.

Will the 6808 industry-number bearing fit the same 7 mm wide housing as my older 61808 unit?

Yes, the 6808 shares the 40 mm bore, 52 mm outside diameter and 7 mm outer ring width, so it drops into the existing housing without modification.

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