6708-3 & 6711-3 Stringing Blocks

Specifications

Alumium alloy cast sheaves with machined groove
Roller bearings
Aluminum alloy case side frames

Model 6708-3

Sheave DimensionsUNLINEDLINED
Outside Diameter203 mm (8”)203 mm (8”)
Root Diameter152 mm (6”)165 mm (6-1/2”)
Groove Radius15.9 mm (5/8”)12.7 mm (1/2”)
Groove Depth25.4 mm (1”)19mm (3/4”)

*) Weight Approx. 6.81 kg (15 lbs)

Model 6711-3

Sheave DimensionsUNLINEDLINED
Outside Diameter273 mm (10-3/4”)273 mm (10-3/4”)
Root Diameter203 mm (8”)216 mm (8-1/2”)
Groove Radius17.5 mm (11/16”)14.3 mm (9/16”)
Groove Depth35.0 mm (1-3/8”)28.6 mm (1-1/8”)

*) Weight Approx. 12.3 kg (27 lbs)

Groove sides flared outwards at 15° on unlined sheave and at 30° on lined sheave

*) Basic block weight (not including base)

Options

Crosshead and socket clevis
Crossarm base