Bearing Insert Solutions
Sealmaster PN Gold ball and spherical roller mounted product employ a high phosphorus electroless nickel plating onto 52100 bearing quality steel race rings. The result is a high performing corrosion resistant bearing, while maintaining full load rating capability.
400 series stainless steel is applied to race rings and balls in the Sealmaster SS Gold and Browning CRES SS mounted ball product. 400 series stainless steel provides both corrosion resistance as well as hardening capability so as to support rolling contact stresses and resist wear. The choice of a stainless steel bearing is important to certain users who must avoid any contamination risk due to potential flaking of a coating or plating.
The corrosion resistance characteristics of coatings and stainless steel solutions versus other options is likewise demonstrated below. Here we see side by side test results in which parts were exposed to acidic solutions (e.g. food/beverage processing), as well as base solutions (e.g. cleaning solutions).
Wet Box Acid Spray Test:Outer rings sprayed with Citric Acid (pH 2) for 8 hours
Wet Box Bleach Spray Test: Outer rings sprayed with 6% bleach solution (pH 12) for 8 hours.
Features Promoting Operational Performance
Beyond the effects of corrosion to visual appearance, corrosion also affects the ability of the bearing to perform its function of rotational operation. Corrosion can lead to degradation of the seals, resulting in contaminant ingress or internal component wear leading to bearing seizure. Having applied the solutions discussed prior regarding materials or coatings to protect against corrosion, the next key solutions provided by Sealmaster and Browning product is a seal design that brings together protection against contaminants and lubricant retention so as to promote long rotational life in harsh wet and corrosive environments.
Sealmaster PN Gold and SS Gold mounted ball bearings utilize an HPS high performance seal. The features of this seal, as detailed below, provide a multiple and multi-directional sealing system working in conjunction with the outside flinger and grease cavities that can perform in chemical and corrosive environments while maintaining good speed and drag characteristics.