
Blocks
Sailing blocks are essential components for optimizing sailboat performance, providing smooth and efficient control over the sails. These marine blocks are available in various sizes and types, including single, double, and triple blocks, designed to handle different line loads and configurations. Constructed from durable materials like stainless steel, nylon, and carbon fiber, sailing blocks are built to withstand harsh marine environments, ensuring long-lasting reliability. Key features to consider include block sheaves, load ratings, and ball bearings for minimal friction and maximum efficiency. Whether you need traveler blocks, deck blocks, or sail handling blocks, the right selection ensures smoother sail trims and quicker adjustments. Leading brands like Harken, Lewmar, and Antal offer high-quality sailing blocks that are easy to install and maintain. Choosing the right block and tackle system for your sailboat enhances maneuverability, improves performance, and provides better control while sailing, making them a must-have for any sailing enthusiast or racer.
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Schaefer Series 7 Flat Base/Aluminum Cheek/Delrin Sheave
Schaefer Marine
MSRP: $146.55$112.74Series 7 Flat Base/Aluminum Cheek/Delrin SheaveDelrin™ sheave ensures smooth operation and high safe working load. Stainless steel base distributes loads to a large surface area. Specifications:Sheave Dia. 2-3/8" (60 mm)Max. Line 1/2" (13...MSRP: $146.55$112.74 -
Schaefer Series 7 Stand Up Ball Bearing Swivel Block - 2-3/8" 60mm
Schaefer Marine
MSRP: $265.70$204.38Series 7 Stand Up Ball Bearing Swivel Block - 2-3/8" 60mmSingle stand up ball bearing block. Stand up spring keeps block upright when not in use. Stainless steel base spreads load out and may be used with 97-49 backing plate. (sold separately) Delrin(tm)...MSRP: $265.70$204.38 -
Schaefer Single Aluminum Block - 51mm Sheave
Schaefer Marine
MSRP: $85.35$65.66Single Aluminum Block - 51mm SheaveSingle block with anodized aluminum cheeks. Delrin™ sheave ensures smooth operation with high safe working load. Swivel head may be locked in place to avoid twist. Specifications:Sheave Dia. 2"...MSRP: $85.35$65.66 -
Schaefer Single Aluminum Block - 60mm Sheave
Schaefer Marine
MSRP: $129.40$99.54Single Aluminum Block - 60mm SheaveDelrin™ sheave ensures smooth operation and a high safe working load. Swivel head may be locked in place to eliminate twisting. Specifications:Sheave Diameter 2 3/8" (60mm)Thickness 1 3/32" (28mm)Width 2 1/2"...MSRP: $129.40$99.54 -
Schaefer Single Ball Bearing Block
Schaefer Marine
MSRP: $118.75$91.36Single Ball Bearing BlockSingle block with aluminum cheeks and ball bearing sheave. Delrin™ ball bearing sheave ensures low-friction operation. Swivel head may be locked in place to avoid twist. Specifications:Sheave Diameter 2"...MSRP: $118.75$91.36 -
Schaefer Single Stainless Steel Block - 51mm Sheave
Schaefer Marine
MSRP: $99.20$76.31Single Stainless Steel Block - 51mm SheaveSingle block with stainless steel cheeks. Delrin™ sheave ensures smooth operation and high safe working load. Specifications:Sheave Dia. 2" (51mm)Thickness 15/16" (24mm)Width 2 1/8" (54mm)Length 4...MSRP: $99.20$76.31 -
Schaefer Single Stainless Steel Block - 60mm Sheave
Schaefer Marine
MSRP: $168.70$129.77Single Stainless Steel Block - 60mm SheaveDelrin™ sheave ensures low-friction and high safe working load. Swivel head may be locked in place to eliminate line twist. Specifications:Sheave Dia. 2 3/8" (60mm)Thickness 1 3/32" (28mm)Width 2 1/2"...MSRP: $168.70$129.77 -
Schaefer Spring Loaded/Lined Slide/Aluminum f/1" T-Track
Schaefer Marine
MSRP: $246.75$189.82Spring Loaded/Lined Slide/Aluminum for 1" T-TrackDelrin™ sheave ensures smooth operation and high safe working load. Anodized aluminum cheeks and stainless steel slider ensure reliability. Polyethylene liner and pin stop allow for easy adjustment...MSRP: $246.75$189.82 -
Schaefer Spring Loaded/Lined Slide/Stainless Steel f/1-1/4" T-Track
Schaefer Marine
MSRP: $359.05$276.20Spring Loaded/Lined Slide/Stainless Steel for 1-1/4" T-TrackDelrin™ sheave ensures smooth operation and high safe working load. Stainless Steel cheeks and stainless steel slider ensure reliability. Polyethylene liner and pin stop allow for easy...MSRP: $359.05$276.20 -
Schaefer Stand-Up Swivel - Aluminum Block
Schaefer Marine
MSRP: $256.25$197.12Stand-Up Swivel - Aluminum BlockSpecifications:Sheave Dia. 2-2/8" (60 mm)Max Line 1/2" (13 mm)Diameter includes urethane base 3-3/8" (86 mm)Height 4-25/32" (120 mm)H2 2-15/32" (63 mm)Fastener Size (4),1/4" RH (6 mm)C/C 1-11/16" (43 mm)SWL 2250 lbs (1020...MSRP: $256.25$197.12 -
Schaefer Stand-Up Swivel w/Aluminum Cheeks
Schaefer Marine
MSRP: $212.90$163.76Stand-Up Swivel with Aluminum CheeksDelrin™ sheave ensures smooth operation and high safe working load. Specifications:Sheave Dia. 2" (51 mm)Max Line 7/16" (11 mm)Diameter includes urethane base 2-7/8" (73 mm)Height 4-1/32" (103 mm)H2 2-3/32"...MSRP: $212.90$163.76 -
Schaefer Twin Sheet Block f/1-1/4" T-Track - Black
Schaefer Marine
MSRP: $474.80$365.23Twin Sheet Block for 1-1/4" T-Track - BlackHardcoat anodized aluminum body and slider provide a high strength block. Aluminum sheave runs on nomex™/Teflon™ bearing for a low-friction, high strength sheave. Articulating sheave allows for a...MSRP: $474.80$365.23