Tritan 61903 2RS PRX Radial Ball Bearing collectible

Industrial-grade radial bearing

The Tritan 61903 2RS PRX is a metric radial ball bearing built to industry number 61903 with a 17 mm bore and 30 mm outside diameter. Double contact seals and Polyrex EM lubricant protect the alloy-steel races and AISI 52100 balls in oily or greasy environments. ABEC 1 rating and a steel cage give predictable operation for power-transmission equipment.

Suited to maintenance and light-duty builds

Technicians replacing a 6903 series bearing in metric machinery will find the dimensions and load rating a direct match. The 1 040 lbf dynamic radial capacity handles moderate shaft loads but is not intended for high-speed precision spindles or heavy shock-loading applications. Buyers needing a higher ABEC class or a different seal arrangement should look elsewhere.

Consistent running under sustained load

Polyrex EM grease resists washout and oxidation, so the bearing maintains film strength during extended duty cycles in contaminated settings. The contact seals retain lubricant and exclude debris without adding excessive drag. Alloy-steel rings and grade 52100 balls hold geometry within the stated +0/-0.008 mm bore tolerance through continuous operation.