Brand: Ronstan
Ronstan Series 40 Single Ball Bearing Block - Universal Head (RF40100)
Ronstan Series 40 Single Ball Bearing Block - Universal Head (RF40100)
8 available
About this product
The Ronstan Series 40 Single Ball Bearing Block features a 2-stage bearing system for consistent, low-friction performance across a full load range. Designed for durability and ease of use, this block includes a Captive Lock universal head that can be fixed in two planes or left to swivel as needed.
Key Features:
- Low-friction Acetal ball bearing system
- Lightweight, fiber-reinforced nylon cheeks with cut-outs for maintenance
- Captive Lock universal head
- Slotted pin shackle to prevent fouled lines
- U.V.-stabilized construction with Grade 316 stainless steel load straps
Technical Specifications:
- Sheave diameter: 40mm (1-9/16 in.)
- Maximum rope diameter: 10mm (7/16 in.)
- Pin diameter: 5mm (3/16 in.)
- Maximum Working Load (M.W.L.): 350kg (770 lbs)
- Breaking Load (B.L.): 1,000kg (2,200 lbs)
- Weight: 70g (2.5 oz)
- Manufacturer Part Number: RF40100
Recommended Applications: Ideal for mainsheets, halyards, vangs, and spinnaker control lines on catamarans, one-design classes, and sportsboats up to 8 meters (26 ft).
- Secure checkout
- 21-day return requests
- Free standard shipping $100+
Product facts
- CT SKU
- CT-103710
- Model / MPN
- RF40100
- UPC / GTIN
- 9316800243891
- Package dimensions (H × W × L)
- 1" X 3" X 4"
- Package weight
- 0.17 lb
- Country of origin
- INDONESIA
Shipping & returns
Shipping & returns
Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.
Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
