Description
Schaefer Series 7 Flat Base Block | Boat Supply Store
Engineered for demanding marine applications, this block addresses the need for a high-strength, reliable component in critical sailing systems. It features a robust 2-3/8" (60 mm) Delrin™ sheave capable of handling lines up to 1/2" (13 mm) with an impressive Safe Working Load (SWL) of 2250 lbs (1020 kg). Ideal for halyards, sheets, or control lines on performance-oriented sailboats operating in challenging coastal or offshore environments.
Key Features
- Delrin™ Sheave for superior low-friction operation and extended service life.
- High Load Capacity with a 2250 lbs (1020 kg) Safe Working Load (SWL).
- Durable Aluminum Cheeks provide structural integrity and impact resistance.
- Corrosion-Resistant Stainless Steel Base ensures secure mounting and load distribution.
- Flat Base Design offers a stable and secure mounting platform on deck or bulkhead.
- Optimized for Moderate to High Loads, ideal for performance sailing.
- Smooth Operation minimizes wear on running rigging.
- Compact Dimensions (Height 1" / 25 mm) for efficient rigging placement.
Specifications
| Product Specifications | |
|---|---|
| Sheave Diameter | 2-3/8" (60 mm) |
| Max Line | 1/2" (13 mm) |
| SWL | 2250 lbs (1020 kg) |
| Weight | 9.6 oz (272 g) |
| Dimensions - Length | 4-3/8" (111 mm) |
| Dimensions - Width | 2-3/4" (70 mm) |
| Dimensions - Height | 1" (25 mm) |
| Fastener C/C - Overall | 3-5/8" (92 mm) |
| Fastener C/C - Wide End | 2" (51mm) |
| Fastener C/C - Narrow End | 1-9/16" |
Who This Is For
Sailors and boaters requiring a robust and reliable block for halyards, sheets, or control lines on sailboats, particularly those with moderate to high load requirements. This block is suited for offshore cruising or performance racing where dependable hardware is paramount.
How It Compares
| Feature | Schaefer Series 7 Flat Base Block | Competitor |
|---|---|---|
| Sheave Diameter | 2-3/8" (60 mm) | 1-1/2" |
| Max Line Diameter | 1/2" (13 mm) | 3/8" |
| Safe Working Load (SWL) | 2250 lbs (1020 kg) | — |
| Sheave Material | Delrin™ | Nylon |
| Cheek Material | Aluminum | Nylon |
| Base Type | Flat Base | Swivel |
Common Concerns Answered
What is the primary customer sentiment regarding this block?
Customer sentiment is positive, with users frequently citing the robust construction, smooth operational performance, and high load capacity as key benefits for demanding sailing tasks.
Are there any commonly reported issues with Schaefer blocks?
While no specific complaints are documented for this model, general block concerns can include eventual sheave wear or potential underperformance in extreme conditions if undersized for the application. Proper maintenance mitigates these risks.
Could this block be susceptible to corrosion?
The combination of aluminum cheeks and a stainless steel base offers inherent corrosion resistance. However, like all marine hardware, periodic cleaning and inspection are recommended to maintain optimal performance and longevity.
Frequently Asked Questions
What is the maximum line diameter this Schaefer Series 7 block can handle?
The Schaefer Series 7 Flat Base block is designed to accommodate a maximum line diameter of 1/2" (13 mm).
What is the Safe Working Load (SWL) for the Schaefer Series 7 Flat Base block?
The Safe Working Load (SWL) for this specific Schaefer Series 7 Flat Base block is rated at 2250 lbs (1020 kg).
What are the dimensions of the Schaefer Series 7 Flat Base block?
The block measures 4-3/8" (111 mm) in length, 2-3/4" (70 mm) in width, and has a height of 1" (25 mm).
What type of sheave material is used in the Schaefer Series 7 block?
The Schaefer Series 7 block utilizes a high-performance Delrin™ sheave, known for its low friction and durability.
What is the weight of the Schaefer Series 7 Flat Base block?
The Schaefer Series 7 Flat Base block weighs 9.6 oz (272 g).
