Precision Steel Bearings Catalog - Thomson - #2

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www.danahermotion.com 67 Thomson RoundRail Linear Guides and Components Inch Ball Bearing Bushing Adjusting Screw 3° The basis for the performance of all Precision Steel Ball Bushing Bearings is a simple but ingenious system of ball recirculation that permits almost frictionless, unlimited travel. Replace High Friction Plain Bearings Plain bearings cause friction, stick-slip, binding and chatter. The Precision Steel Ball Bushing Bearing’s patented ball recirculation virtually eliminates wear and provides a constant coefficient of friction as low as .001. This dramatic reduction in friction allows the designer to use smaller less expensive drive motors, ball screws, belts, linkages and gears. Lasting Precision Alignment High friction plain bearings cause wear resulting in a loss in system alignment and repeatability. Each Precision Steel Ball Bushing Bearing is manufactured with high quality bearing steel that is hardened and precision ground. The rolling elements of each Ball Bushing Bearing are precision ground bearing balls that recirculate freely into and out of the load zone. The balls are guided through their recirculation path by a steel retainer and hardened sleeve. The inherent non-wear characteristics of each Precision Steel Ball Bushing Bearing assures maximum system accuracy and repeatability. High Travel Speeds Precision Steel Ball Bushing can operate at travel rates as high as 10 ft/s and accelerations as high as 450 ft/s2. When replacing inefficient v-way or flat-way systems, this travel rate capability provides immediate improvements in machine efficiency and productivity. Ease of Installation The Precision Steel Ball Bushing Bearing can be retained in a housing, internally or externally. The retaining ring groove on the outside diameter allows the bearing to be captured and retained by an external retaining ring. If internal retention is required, the Ball Bushing Bearing can be installed in a housing and held in place with an internal retaining ring. Protection from Contamination Precision Steel Ball Bushing Bearings most popular sizes are available with double acting integral wipers that keep out contamination, retain lubrication and maximize travel life. Figure 1 When the Precision Steel Ball Bushing Bearing is installed in its standard Pillow Block it will self-align up to 3 degrees in all directions. Figure 2 Precision Steel Ball Bushing Retainer Bearing Cross-section Hardened and Precision Ground Sleeve Inch – Precision Steel Ball Bushing Bearings