Schaefer Stand Up Spring Blocks
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  • Schaefer Stand Up Spring Blocks

Schaefer Stand Up Spring Blocks

Schaefer Stand Up Spring Blocks swivel a full 360° and are supported by a thick gauge stainless steel spring to prevent contact with the deck. These fairleads are ideally utilized in fixed position halyard, sheet, or control line applications.

A larger diameter base allows for better distribution of higher loads to a large surface area when compared to smaller designs. They are available in a variety of sizes with either stainless steel or machined aluminum cheeks.

The M Series Blocks also feature Torlon Rollers with Delrin Ball Bearings. This promotes extremely low friction and superior strength. They also have a machined center that permits the use of the hub as a becket.

 
 
$90.73 / ea
qty.   
$90.73
$92.44
$248.74
$455.62
$111.41
$119.39
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Tech Spec Product Info User Generated Content
  50462 / 50562  70462 / 70562  M6662  M8262 
Cheeks:  Aluminum / Stainless  Aluminum / Stainless  Aluminum M Series  Aluminum M Series 
Sheave Dia.:  2" (51mm)  2-3/8" (60mm)  2-5/8" (66mm)  3-7/32" (82mm) 
Max Line:  7/16" (11mm)  1/2" (13mm)  1/2" (12mm)  5/8" (16mm) 
Diameter: (w/ base)  2-7/8" (73mm)  3-3/8" (86mm)  2-3/8" (60mm)  2-7/8" (73mm) 
Height: (1)  4-1/32" (103mm)  4-25/32" (120mm)  5-1/8" (130mm)  6-1/4" (161mm) 
Height: (2)  2-3/32" (54mm)  2-15/32" (63mm)  2-3/4" (70mm)  3-1/4" (83mm) 
Fastener Size: (4)  #10 (5mm) RH  1/4" (6mm) RH  1/4" (6mm) FH  5/16" (8mm) FH 
Fastener Spacing:  1-13/32" (36mm)  1-11/16" (43mm)  1-3/16" (30mm)  1-3/8" (35mm) 
SWL:  1750 lbs (790kg)  2250 lbs (1020kg)  2800 lbs (1270kg)  5000 lbs (2270kg) 
Weight:  7 oz (198g) / 9 oz (255g)  11.7 oz (332g) / 14.5 oz (411g)  10.4 oz (295g)  19.2 oz (544g) 

NOTE: The SWL of Schaefer fittings represents the Safe Working Load the block, or any of its components, can withstand without maintaining any damage or deformation. It signifies the total load, and should not be exceeded by either static or dynamic forces. Total load is dependent on three components: line load, angle of load that is turning through a block, and the amount of purchase in the system.

BRAND: Schaefer
Type: Blocks and Sheaves
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