Ronstan Series 50 Ball Bearing Block - Single Loop Top. Sheaves running on acetal or Torlon ball bearings provide high performance and low friction. The 2-stage ball bearing system provides consistent performance over the full load range. Features include a low friction 2-stage ball bearing system, high static and dynamic load capacity, lightweight construction, and cheek cut-outs for easy bearing maintenance. Specifications: Max. rope diameter: 1/2"; M.W.L.: 1100 lbs; Sheave diameter: 2"; Breaking load: 3310 lbs; Weight: ~3.5 oz. Materials include acetal or Torlon ball bearings, UV-stabilized acetal sheave, Grade 316 stainless steel load strap and head fitting, and impact and UV-resistant fiber-reinforced nylon cheeks. Ideal for sheet, fine tune and control line applications on boats of all sizes for optimum sheeting and trimming performance.
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