RONSTAN RF40171 Ball Bearing Block Single Upright Lead

( Brand: Ronstan ), ( Manufacturer Part Number: RF40171 ), ( Part Type: Bearing Block )

Review RONSTAN Series 40 Ball Bearing Block Single Upright Lead

The Ronstan RF40171 40 Ball Bearing Block Single Upright Lead is a high-performance sailboat furling system component designed for optimal functionality and durability. This block features a rugged, one-piece casting made of marine-grade aluminum alloy, ensuring long-lasting resistance to the rigors of the marine environment.

At its heart, this block boasts 40 precision-engineered ball bearings that reduce friction and enhance the system's smooth operation. These ball bearings are sealed within the block housing to protect them from water, salt, and other contaminants. The self-aligning ball bearings ensure proper alignment, even under heavy loads, offering unsurpassed load capacity and durability.

The single upright lead design of this Ronstan block accommodates staying wires and lead wires of various sizes, offering versatility and adaptability to different sail configurations. Its al reliefs on each side facilitate easy installation and disassembly, while its polished finish adds an elegant touch to your sailboat's rigging.

Weighing in at just 550 grams, the RF40171 is lightweight yet robust, making it an ideal choice for racers and cruisers alike. This ball bearing block's compact design allows for ample clearance and easy maneuvering around the deck, ensuring peace of mind during tacking and gybing maneuvers.

The Ronstan RF40171 Single Upright Lead Ball Bearing Block underscores the manufacturer's commitment to delivering top-tier sailing components that deliver dependable performance, reliability, and longevity. Trust this exceptional piece of equipment to help power your boat through the waves with unwavering efficiency.

Ronstan RF40171 40 Ball Bearing Block Single Upright Lead Block: A Detailed Analysis

The Ronstan RF40171 is a sailing accessory that comprises a single, upright ball bearing block capable of accommodating 40 lines. In this analysis, we'll delve into the pros and cons of purchasing this product, with a concluding recommendation.

1. Efficient and smooth operation: Ball bearing blocks, such as the Ronstan RF40171, are known for their minimal friction, allowing for efficient and effortless line control. Ball bearings ensure that the sheaves rotate smoothly even when under heavy load, making these blocks an ideal choice for sailors dealing with thick lines or harsh conditions.

2. Durability: The Ronstan RF40171 features a sturdy anodized aluminum construction, ensuring that it is resistant to corrosion and wear. Being lightweight yet robust, the block is well-suited for sailing scenarios where durability is a critical factor for success.

3. Versatile mounting: The upright configuration utilizes a single baseplate, providing versatility in terms of mounting options. This mounting versatility can prove to be vital when space and mounting variations are concerns.

4. Restricted bearing load: The ball bearing block effectively distributes the load across multiple bearing surfaces, reducing the risk of sheave damage and prolonging the overall lifespan of the block.

1. higher cost: Ball bearings are more expensive compared to bushings or roller bearings, consequently increasing the overall price of the block.

2. Maintenance: Although the Ronstan RF40171 features protected ball bearings that minimize the risk of water and debris entry, its bearings might require more frequent maintenance compared to standard roller blocks. Ensuring proper lubrication and protection is vital to ensure the longevity of the product.

3. Limited capacity: The capacity of a single ball bearing block is generally less than that of a multi-pulley block. Although the RF40171 can handle 40 lines, there may be instances where more substantial capacity is necessary.

The Ronstan RF40171 40 Ball Bearing Block Single Upright Lead is a valuable addition to any sailor's inventory seeking a highly efficient, smooth-operating, and durable block for sailing applications. Its versatile mounting and restricted bearing load distribution features are essential considerations for those who require such an investment. However, be prepared for the higher cost of ownership, as well as the additional maintenance required due to its ball bearings.

If the maintenance burden and associated cost can be accepted, this block comes highly recommended for its ruggedness, performance, and reliability in heavy-duty sailing scenarios.

Details:

The 2-stage ball bearing system provides consistent performance over the full load range. Materials: Acetyl ball bearings. Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats hammers. I need to exchange an item.

Ronstan Series 40 Ball Bearing Block - Single Upright Lead RF40171. Applications: Typically used for halyards at the mast base. UV stabilized Acetyl sheave.: Brand: Ronstan, model Number: RF40171.

Precision molded Acetyl sheaves running on or Orlon ball bearings provide high performance low friction. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

part #: rf40171 prices

• $56.90-$85.90

specifications perwatercraft:

• brand: Ronstan
• mpn: Rf40171
• part type: Bearing Block

offer perwatercraft:

• options: Ship-to-home
• availability: In Stock
• quantity: 2
• sold: 0
• started: December 10, 2024

payments perwatercraft:

• credit card: Discover
• other
• wallet: Google-pay

general perwatercraft:

• condition: New
• Parts Accessories > Personal Watercraft Parts > Other Parts

seller perwatercraft:

• city: Newark, NJ
• rating: 99.3%
• # reviews: 61293

shipping perwatercraft:

• service: Standard
• cost: $0.00
• transit: 3-8 Days
• type: Fixed
• class: Standard

returns perwatercraft:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

Ronstan RF40171 Is Similar To:

• Ronstan Rf46100 Series 40 Ratchet Orbit Block-single-auto-swivel Shackle Head (61.5% similar) The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins. These faces are offset from the radial line, to draw rope down into gripping area when under load. This let's the sheet run out smoothly and freely-great for rapid easing of gybing...(December 23rd, 2024)
• Ronstan Rf31712 Series 30 High Load Exit Box For Single Rope Or Wire (56.7% similar) Ronstan series 30 high load exit box for single rope or wire RF31712: wire, plain bearing sheaves are ideal halyards and other applications where high static loads likely to be encountered, applications: ideal lines rope wire need led through decks, bulkheads spars minimizing friction chafing...(January 23rd, 2025)
• Ronstan Rf35109hl Series 30 Ball Bearing Block Single Becket Option Lashing (72.3% similar) Secure, versatile and secure attachment. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through use fibre-reinforced composites in block head, cleat arms and Becket's. Ronstan series 30 ball bearing block single Becket...(March 2nd, 2025)
• Ronstan Rf15174 Series 15 Ball Bearing Utility Block Pivoting Lead (74.6% similar) Precision molded acetyl sheave running on stainless steel ball bearings provide high performance low friction. Single loop head blocks include an o-ring to separate running line from lashing or fixing. This is helpful if you are buying multiple items. Ball bearings: stainless steel...(March 7th, 2025)
• Ronstan Rf56510 Series 55 Ratchet Mount Orbit Block Fiddle Becket Swivel (55.7% similar) These faces are offset from the radial line, to draw rope down into gripping area when under load. Parts without fitment are to be assumed universal and may require vehicle modification. Try the block in both modes and see which you prefer - really can't go wrong. Features: up to 20:1 holding...(May 1st, 2025)
• Ronstan Rf20100 Series 20 Ball Bearing Block Single (82.4% similar) Materials: us.v. Applications: dinghy control lines, Vang's, Cunningham's, traveller controls. I need to exchange an item. Specifications: sheave: 20MM 3/4 , max. Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying...(May 28th, 2025)
• Ronstan Rf41300 Series 40 All Purpose Block Triple Swivel Head (69.2% similar) All purpose AP blocks are a great all around solution. Our part availability is very diverse.: brand: Ronstan, model number: RF41300. Cheeks: impact modified, fiber reinforced and UV stabilized nylon. Parts without fitment are to be assumed universal and may require...(June 6th, 2025)
• Ronstan Rf15101 Series 15 Ball Bearing Utility Block Single Loop Head (77.4% similar) Ball bearings: stainless steel. Shock cord pensioning systems. Ronstan series 15 ball bearing utility block - single block, loop head RF15101. Parts without fitment are to be assumed universal and may require vehicle modification.: brand: Ronstan, model number: RF15101...(August 2nd, 2025)