


Ronstan Series 50 single loop top ball bearing block (RF50101) — 2-stage ball bearings for low friction and high load capacity; lightweight with Grade 316 stainless steel fittings.
$49.38 $58.09
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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.
| Materials & Construction | |
| Material | Acetal, Torlon, Grade 316 Stainless Steel, Fiber-reinforced Nylon |
| Outer Material | UV-stabilized Acetal |
| Product Details | |
| Bearing Number | 5000 |
| Bearing Type | Ball Bearing |
| Compatible Lubricant | Oil |
| Model Number | RF50101 |
| Style | Single Loop Top |
| Sizing & Dimensions | |
| Weight | 3.53 ounces |
| Technical Specifications | |
| Breaking Load | 3310 lbs |
| M.W.L. | 1100 lbs |
| Max. Rope Diameter | 1/2" |
| Sheave diameter | 2" |
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