5/16″ Ball Bearing Blocks S.S. Ball Bearings & Cover Plates by Viadana

Sail Care is proud to offer this great and innovative line of 5/16″ ball bearing blocks and other sailboat hardware from Viadana. Since 1961 they have been deeply involved in research, design, manufacturing, and marketing of top quality innovative hardware for sailors and their boats. 

These ball bearing blocks are strengthened by using SS balls working between
two SS covers to share the load in a perfectly balanced way. Even under
strong stress for long periods the SS balls maintain their shape and
balance against the covers. Extremely smooth and tough!

Ball Bearing Blocks 89.51

S.S. Ball Bearings & Cover Plates

Single block spec: Sheave size 1 5/16″, Max. line size 5/16″, Overall height 2 5/8″
Weight 38gr or 1.34oz, Breaking load 800kg or 1,760lbs
Max. working load 300kg or 660lbs.

PART NUMBER DESCRIPTION PRICE
89.10Single block universal 3-way head$16.65
89.51Single$13.15
89.52Single w/becket$15.15
89.53Single – breaking load 700kg or 1,540 lbs$16.65
89.54Single w/becket – breaking load 700kg or 1,540 lbs$18.65
89.55Swivel – breaking load 700kg or 1,540 lbs$18.25
89.56Fiddle$23.25
89.57Fiddle w/becket$25.25
89.58Fiddle w/vee jam$27.40
89.59Fiddle w/becket & vee jam$29.90
89.61Double$33.25
89.62Double w/becket$35.25
89.63Triple$49.90
89.64Triple w/becket$51.90
89.65Single cheek block (Holes 5/32″)$18.00
24.23Spring$2.25
24.26Washer$2.25
35.02Deck strap/deck clip/eye strap$1.40
35.24Round deck plate for assembly of universal 3-way heads$6.90

Note: All the blocks with additional bracketed numbers are available without ball bearings.
Blocks 89.53, 89.54 & 89.56 thru 89.59 come with a universal 3-way head.

Universal 3-way head diagram


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