Cable Sheaves, Shackles and Quad Blocks
Cable Sheaves are used in placing and removing underground cables.
- Constructed from high-strength aluminum alloy, they have self-lubricating bushings for long, maintenance-free lives
- These units are available in 11 in (280mm), 20 in. (510 mm) and 26 1/2 in. (675mm) dia., and are used with 3 in ( 80mm), 4 in. (102mm) and 5 in. (130mm) cables.
- They are used with the GMP cable sheave shackle or jam skid. The pin is supplied with the cable sheave shackle or jam skid.
P/N | A | B | C | D | Weight |
71726 | 4 in. (10cm) | 11 in. (28cm) | 7 7/8 in. (20cm) | 4 1/2 in. (11.5cm) | 20 lbs. (9kg) |
71729 | 5 in. (13cm) | 11 in. (28cm) | 6 7/8 in. (17cm) | 5 1/2 in. (14cm) | 25 lbs. (11kg) |
71725 | 4 in. (10cm) | 20 in. (51cm) | 16 in. (41cm) | 4 1/2 in. (11.5cm) | 36 lbs. (16kg) |
71728 | 5 in. (13cm) | 20 in. (51cm) | 16 1/2 in. (42cm) | 5 1/2 in. (14cm) | 40 lbs. (18kg) |
71721 | 3 in. (8cm) | 26 1/2 in. (67cm) | 24 in. (61cm) | 3 1/2 in. (9cm) | 38 lbs. (17kg) |
71724 | 4 in. (10cm) | 26 1/2 in. (67cm) | 22 1/2 in. (57cm) | 4 1/2 in. (11.5cm) | 44 lbs. (19kg) |
CABLE SHEAVE SHACKLE
Used for supporting a cable sheave or quadrant block in place at a manhole equipped with pulling-in irons.
- Contains a two-part clevis made of high-strength structural steel, with two sets of sheave pin holes 1 3/8 in. (35mm) dia. for accommodating either a cable sheave or quadrant block
- The load half has a forged steel hook that attaches to the pulling-in irons with a standard 1/2 in. (12mm) x 6 ft. ( 1.8 m) construction chain, while the support half has a shoulder eyebolt so you can tie it off to a support rope over the manhole
- Will accommodate any 11 in., 20 in. or 26 1/2 in. cable sheave with a 1 3/8 in. hole size for 4 in. or 5 in. cable
- Each shackle includes a 1 5/16 in. dia. sheave pin and can withstand working loads up to 10,000 lbs (4535kg)
- Now included Safety Latch as required by OSHA
Select the right GMP Sheave or Quadrant Block to accommodate your cable pulling needs, then choose a shackle from the table below to match the size
P/N | Cable Sheave Size | Weight |
71643 | 3 in. (76mm) | 32 lbs. (14kg) |
71644 | 4 in. (102mm) | 45 lbs. (20kg) |
71645 | 5 in. (127mm) | 47 lbs. (21kg) |
71716 | Replacement Pin 1 5/16 X 4" | 5 lbs. (2.2kg) |
71717 | Replacement Pin 1 5/16 X 5 " | 6 lbs. (2.7kg) |
QUADRANT BLOCKS
Used to guide the pulling line or cable during underground cable placement or removal
- Consists of six cast aluminum sheaves supported in an aluminum frame to provide a bending radius of 24 in. (609mm)
- Each sheave has self-lubricating bushings for smooth movement and a long, maintenance-free life
- Available to accommodate 3 in. (84453), 4 in. (84454) or 5 in. (84455) cable diameters
- Each side plate has holes to insert a 1 1/4 in. (32mm) digging bar to prevent the block from being knocked into the manhole
- It can also be used with a cable sheave shaker, pulling frame, or jamb skid to suspend in the manhole as an alternative method.
P/N | Maximum Cable Size | Weight |
84453 | 3 in. (76mm) | 60 lbs (27kg) |
84454 | 4 in. (102mm) | 75 lbs (34kg) |
84455 | 5 in. (127mm) | 90 lbs (40kg) |
FIBER OPTIC QUADRANT BLOCK
The Fiber Optic Quadrant Block provides a smoother and safer cable placement in manhole vaults with a minimum of set up time.
- Eleven machined aluminum sheaves provide better cable support than all other conventional blocks
- Its corrosion resistant aluminum and stainless steel construction provides a smooth, non chafing cable placement surface
- Quadrant can be used either inside the vault or on edge of the manhole
- This unit has an 18 in. (457mm) bending radius and is compatible with all fiber optic cables up to 7/8 in. (22mm) diameter
- The Fiber Optic Quadrant, when used in the manhole, is mounted with a GMP Fiber Optic Shackle (P/N 70045) or a Pulling Frame
P/N 15316 Fiber Optic Quadrant Block Weight: 18 lbs. 8 oz. (8kgs)