Description
Schaefer Series 3 Block 1-7/16" Delrin Sheave | Boat Supply Store
Manage high-load running rigging effectively with the Schaefer Series 3 block, engineered for demanding marine applications. This block features a robust 1-7/16" (37mm) Delrin™ sheave for superior friction reduction and a stainless steel base engineered for optimal load distribution. With a Safe Working Load (SWL) of 1000 lbs. (450 kg), it reliably handles up to 7/16" (11mm) line, making it suitable for tasks aboard larger cruising yachts navigating the Gulf Coast.
Key Features
- Smooth Operation: Delrin™ plain bearing sheave minimizes friction for effortless line control.
- High Load Capacity: Achieve a 1000 lbs. (450 kg) Safe Working Load (SWL) for critical rigging tasks.
- Durable Construction: Stainless Steel base provides exceptional strength and corrosion resistance.
- Compact Design: Dimensions of 2-7/8" L x 1-3/4" W x 3/4" H ensure efficient space utilization.
- Versatile Line Compatibility: Accommodates line sizes up to 7/16" (11mm).
- Secure Mounting: Fastener spacing of 2-3/8" (60mm) for #10- RH (5mm) fasteners.
- Lightweight Performance: Weighs only 2.5 oz. (71 g) without compromising strength.
- Reliable Performance: Engineered for consistent operation in challenging marine environments.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 1-7/16" (37mm) |
| Max Line Diameter | 7/16" (11mm) |
| Safe Working Load (SWL) | 1000 lbs. (450 kg) |
| Sheave Material | Delrin™ |
| Base Material | Stainless Steel |
| Length | 2-7/8" |
| Width | 1-3/4" |
| Height | 3/4" |
| Weight | 2.5 oz. (71 g) |
| Fastener Spacing | 2-3/8" (60mm) |
| Fastener Size | #10- RH (5mm) |
Who This Is For
Sailors and boaters demanding robust, high-load capacity blocks for managing running rigging on sailboats. This block is ideal for those requiring dependable performance from dinghies to larger cruising yachts.
How It Compares
| Feature | Schaefer Series 3 Block 1-7/16" Delrin Sheave | Competitor |
|---|---|---|
| Sheave Diameter | 1-7/16" (37 mm) | — |
| Max Line Diameter | 7/16" (11 mm) | — |
| Safe Working Load (SWL) | 1000 lbs. (450 kg) | — |
| Sheave Material | Delrin™ | Carbo (Composite), Nylon |
| Base Material | Stainless Steel | Composite, Anodized Aluminum |
Common Concerns Answered
Are there any common complaints about the Schaefer Series 3 block?
No complaints are widely reported for this specific Schaefer Series 3 model, indicating a high level of customer satisfaction with its performance and durability.
Is a ball-bearing block necessary for my application if this block is rated for high loads?
While this Schaefer block utilizes a Delrin™ plain bearing sheave for smooth operation and a high SWL of 1000 lbs., a ball-bearing block might offer marginal friction reduction for extremely high-frequency or low-tension adjustments; however, this block's robust construction and load capacity are typically more than adequate for most running rigging needs.
How does the load capacity of this block compare to others on the market?
The Schaefer Series 3 block offers a substantial Safe Working Load (SWL) of 1000 lbs. (450 kg), which is competitive and often exceeds that of smaller, less robustly constructed blocks from other manufacturers, while providing excellent value.
Frequently Asked Questions
What is the maximum line size this Schaefer block can handle?
This Schaefer Series 3 block is designed to handle lines up to 7/16" (11mm) in diameter.
What is the Safe Working Load (SWL) for the Schaefer Series 3 block?
The Safe Working Load (SWL) for the Schaefer Series 3 block is 1000 lbs. (450 kg).
What are the dimensions of the Schaefer Series 3 block?
The Schaefer Series 3 block has dimensions of 2-7/8" in length, 1-3/4" in width, and 3/4" in height.
What type of sheave does the Schaefer Series 3 block use?
The Schaefer Series 3 block utilizes a Delrin™ plain bearing sheave for smooth, low-friction operation.
What material is the base of the Schaefer Series 3 block made from?
The base of the Schaefer Series 3 block is constructed from durable stainless steel for superior strength and longevity.
