Viadana

● Stainless steel ● Ø of screws: 29/32" ● Holes spacing: 29/32" ● Breaking Load: 620 Kg ● Sheave Diam. : 28 mm   Read more »

● Sheave diameter: 57 mm   ● Max. line size: 10 mm   ● Overall height: 116 mm   ● Weight: 122 gr   ● Breaking load: 900 Kg   ● Working load: 200 Kg   ● Lock On / Off device on the left (counterclockwise)   Ball bearing ratchet block have composite cheeks U.V. stabilized, stainless steel (AISI 316) rivets, an innovative hardcote + PTFE anodised aluminium sheave with gripping faces and delrin bal... Read more »

● Sheave diameter: 2-1/4"   ● Max. line size: 3/8"   ● Overall height: 4-7/32"   ● Weight: 106 gr   ● Breaking load: 900 Kg   ● Working load: 205 Kg   ● Lock On / Off device   Ball bearing ratchet block have composite cheeks U.V. stabilized, stainless steel (AISI 316) rivets, an innovative hardcote + PTFE anodised aluminium sheave with gripping faces and delrin ball bearings. All the ratchet bl... Read more »

● Sheave diameter: 2-1/4"   ● Max. line size: 3/8"   ● Overall height: 4-7/32"   ● Weight: 372 gr   ● Breaking load: 2.250 Kg   ● Working load: 1.050 Kg   ● Lock On / Off device   Use quadruple block art with ratchet block art. 14p36 for a power 8:1 system. Read more »

Ref Ø Sheave Ø Rope Max Total Height Weight Break Load Working Load 96.62 2-1/4" 7/16" 5-11/32" 96 gr 1.080 Kg 320 Kg These new ball bearing blocks are extremely light and stronger. Use the 2-1/4" composite blocks for mainsheet systems on catamarans and little and medium sail-boats. Delrin sheave and balls bearings. Composite cheeks, stainless steel (AISI 316) rivets. All the blocks wi... Read more »

Ref Ø Sheave Ø Rope Max Total Height Weight Break Load Working Load 96.42 1-1/2" 5/16" 3-5/32" 42 gr 600 Kg 230 Kg   These new ball bearing blocks are extremely light and stronger. Use the 1-2/2" composite blocks for jib and mainsheet systems on dinghies and small keelboats. Delrin sheave and balls bearings. Composite cheeks, stainless steel (AISI 316) rivets. All the double and triple ... Read more »

● Ø Sheave: 2-1/4" ● Ø Rope max.: 7/16" ● Breaking Load: 1080 Kg ● Working Load: 320 Kg These new ball bearing blocks are extremely light and stronger. Use the 2-1/4" composite blocks for mainsheet systems on catamarans and little and medium sail-boats. Delrin sheave and balls bearings. Composite cheeks, stainless steel (AISI 316) rivets. All the blocks with shackle have universal 3-way head. Read more »

Ref Ø Sheave Ø Rope Max Break Load Working Load 96.72 2-1/4" mm 7/16" 1080 Kg 320 Kg These new ball bearing blocks are extremely light and stronger. Use the 2-1/4" composite blocks for mainsheet systems on catamarans and little and medium sail-boats. Delrin sheave and balls bearings. Composite cheeks, stainless steel (AISI 316) rivets. All the blocks with shackle have universal 3-way h... Read more »

● Ø Sheave: 1-1/2" - 7/8" ● Ø Rope max.: 5/16" ● Breaking Load: 600 Kg ● Working Load: 260 Kg Aluminum bearings. All pulleys are rotating. Read more »

● Ø Sheave: 1-1/2" - 7/8" ● Ø Rope max.: 5/16" ● Breaking Load: 600 Kg ● Working Load: 260 Kg Aluminum bearings. All pulleys are rotating. Read more »

● Ø Sheave: 1-1/2" - 7/8" ● Ø Rope max.: 5/16" ● Breaking Load: 600 Kg ● Working Load: 260 Kg Aluminum bearings. All pulleys are rotating. Read more »

● Ø Sheave: 1-1/2" - 7/8" ● Ø Rope max.: 5/16" ● Breaking Load: 600 Kg ● Working Load: 260 Kg Aluminum bearings. All pulleys are rotating. Read more »

● Ø Sheave: 2-1/4" - 1-11/32" ● Ø Rope max.: 7/16" ● Breaking Load: 1.080 Kg ● Working Load: 520 Kg Aluminum bearings. All pulleys are rotating. Read more »

  ● Ø Sheave: 2-1/4" - 1-11/32" ● Ø Rope max.: 7/16" ● Breaking Load: 1.080 Kg ● Working Load: 520 Kg Aluminum bearings. All pulleys are rotating. Read more »

  ● Ø Sheave: 2-1/4" - 1-11/32" ● Ø Rope max.: 7/16" ● Breaking Load: 1.080 Kg ● Working Load: 520 Kg Aluminum bearings. All pulleys are rotating. Read more »

  ● Ø Sheave: 2-1/4" - 1-11/32" ● Ø Rope max.: 7/16" ● Breaking Load: 1.080 Kg ● Working Load: 520 Kg Aluminum bearings. All pulleys are rotating. Read more »

As you can see the selectionized sheave the s/s balls work between two steel covers to share the load in a perfectly  homogeneous way, avoiding this way, even under strong stresses, the making of impressions in the pulley and the ovalization  of the balls. Read more »

    D1 mm D2 mm D3 mm S mm G mm 21.00 17 6,2 5 7 15 21.01 22 8,2 8 13,2 15,5 21.02 25 8,2 5 6,4 22 21.03 25 8,2 8 10 17,5 21.04 27 8,2 10 15 18 21.06 33,5 8,2 10 13 26 21.07 38 8,2 8 10 33 21.08 45 8,2 10 13,4 37 21.09 53 8,2 10 15,7 43 21.10 54 8,2 12 17,5 42 Read more »

    D1 mm D2 mm D3 mm S mm G mm 21.50 28 8.2 10 13.4 20 21.51 34 8.2 8 10.5 28.8 21.52 34 12.2 12 17.6 23.8 21.53 45 12.2 10 13.5 39 21.54 56 12.2 12 17.6 47.2   Read more »

    D1 mm D2 mm D3 mm S mm G mm Working Load (Kg) 21.14 20 5.3 8 12.3 15.6 70 21.15 28 5.3 10 14.6 20 280 21.16 34 5.3 12 18.3 24 280 21.17 34 5.3 8 10.9 29 280 21.18 45 8.8 10 14.6 37 350 21.19 57 8.8 12 18.3 47 350 Read more »

    D1 mm D2 mm D3 mm S mm G mm Working Load (Kg) 21.22 28 5.3 8 11 21.4 280 21.23 28 5.3 10 14.6 20 280 21.24 38 8.8 12 20.6 28 350 21.25 44 8.8 14 21.9 34 350   Read more »