Description
Schaefer 51mm Single SS Block | Boat Supply Store
Engineered for the rigors of marine environments, this Schaefer single block provides exceptional performance in demanding sail control applications. Its robust construction features stainless steel cheeks for superior corrosion resistance, paired with a low-friction 51mm Delrin™ sheave that ensures smooth line movement under load. Rated with a high Safe Working Load (SWL) of 1750 lbs (795kg) and capable of handling lines up to 7/16" (11mm), it is an ideal component for dinghies and smaller cruising yachts.
Key Features
- Corrosion-Resistant Stainless steel cheeks withstand harsh saltwater conditions.
- Smooth Operation 51mm Delrin™ sheave minimizes friction for efficient sail trim.
- High Load Capacity Safe Working Load (SWL) of 1750 lbs (795kg) handles significant forces.
- Versatile Line Compatibility Accommodates lines up to 7/16" (11mm) diameter.
- Compact & Lightweight Weighing only 7.1oz (201g) for minimal impact on rigging.
- Durable Construction Built for longevity in demanding marine applications.
- Reliable Performance Ensures consistent operation during sail handling.
- Efficient Sail Control Facilitates precise adjustments for optimal sail shape.
Specifications
| Product Specifications | |
|---|---|
| Sheave Dia. | 2" (51mm) |
| Thickness | 15/16" (24mm) |
| Width | 2 1/8" (54mm) |
| Length | 4 13/32" (112mm) |
| SWL | 1750 lbs (795kg) |
| Weight | 7.1oz (201g) |
| Max Line | 7/16" (11mm) |
Who This Is For
Sailors and boaters requiring a reliable, durable, and high-performance single block for various rigging applications on sailboats, dinghies, and small to medium-sized yachts. It is particularly suited for those prioritizing robust construction and high load capacity in a compact package.
How It Compares
| Feature | Schaefer 51mm Single SS Block | Competitor |
|---|---|---|
| Sheave Diameter | 51mm (2") | — |
| Safe Working Load (SWL) | 1750 lbs (795kg) | — |
| Max Line Diameter | 7/16" (11mm) | — |
| Cheek Material | Stainless Steel | Nylon |
| Sheave Material | Delrin™ | Nylon |
Common Concerns Answered
Is this block suitable for saltwater environments?
Absolutely. The construction features stainless steel cheeks, which are inherently resistant to corrosion, making this block exceptionally well-suited for saltwater marine environments and ensuring long-term durability.
Will this block accommodate thicker lines commonly used on larger boats?
This block is optimized for lines up to 7/16" (11mm). For applications requiring accommodation of significantly thicker or stiffer lines, a block with a larger sheave diameter and higher SWL would be recommended. However, for its intended use on dinghies and smaller yachts, it performs exceptionally well.
Does the price reflect the quality and durability?
Yes, the investment in this Schaefer block is justified by its superior construction. The combination of stainless steel cheeks and a Delrin™ sheave provides exceptional durability and smooth operation, offering long-term reliability that outweighs the initial cost compared to less robust alternatives.
Frequently Asked Questions
What is the maximum line size this Schaefer block can accommodate?
This Schaefer single block is designed to accommodate lines with a maximum diameter of 7/16" (11mm).
What is the safe working load (SWL) for the Schaefer 505-05 single block?
The Safe Working Load (SWL) for the Schaefer 505-05 single block is 1750 lbs (795kg).
What materials are used in the construction of this Schaefer block?
This Schaefer block is constructed with stainless steel cheeks and features a Delrin™ sheave.
What are the dimensions of the Schaefer 505-05 single block?
The dimensions are: Sheave Diameter 2" (51mm), Thickness 15/16" (24mm), Width 2 1/8" (54mm), and Length 4 13/32" (112mm).
Is this block suitable for saltwater environments?
Yes, the stainless steel construction of the cheeks makes this block highly resistant to corrosion and suitable for use in saltwater environments.
