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The SHZHD10 Four Sheaves Combined Block is a precision-engineered stringing tool specifically designed for the installation of OPGW (Optical Ground Wire) and fiber optic cables. By adopting a four-sheave quadrant structure, this block ensures that delicate cables maintain a safe R570 bend radius during traction. This segmented design effectively distributes pressure, preventing signal loss or fiber breakage caused by sharp angles.
Technical Specifications
Manufactured under ISO9001 certification, this combined block provides high-load capacity with protective geometry:
Item Number
Model
Outline Size (mm)
Rated Load (KN)
Bend Radius (mm)
Weight (kg)
20141
SHZHD10
760 x 120 x 480
10 KN
R570
23.5 kg
Applicable Optical Cables: Diameter below Φ22 mm
Applicable General Cables: Diameter below Φ60 mm
Structure: Combined type with four protective sheaves
Key Technical Advantages
Optimal Bend Radius Protection: The R570 bend radius is specifically calculated to exceed the minimum bending requirements of most OPGW and fiber optic cables, ensuring zero signal degradation
Four-Sheave Combined Design: Distributes the hauling tension across four independent sheaves, reducing localized mechanical stress on the cable jacket
Fiber-Safe Sheave Material: Equipped with smooth, non-metallic sheaves (typically nylon) to prevent abrasion and metallic contamination of the optical cable
High Load Stability: With a 10KN rated load, it handles significant pulling forces required for long-span transmission line projects
Applications
OPGW Stringing Operations: Steering and guiding OPGW cables through towers and angles
Fiber Optic Cable Installation: Safe deployment of telecommunication fiber optics in overhead utility grids
Power Line Communication (PLC) Projects: Installing communication-integrated grounding wires
Professional Buyer FAQ
Q1: Why is the R570 bend radius important for OPGW stringing?
Optical fibers are sensitive to micro-bending. The R570 radius ensures the cable transitions smoothly through the block without exceeding the critical bend limit, preventing internal fiber fractures.
Q2: Can this block accommodate larger power cables?
Yes. While optimized for Φ22mm optical cables, the sheave width allows for general power cables with a diameter up to Φ60mm.
Q3: How is the block secured during operation?
The unit features a heavy-duty central hanging eye, allowing it to be suspended from tower cross-arms or utility poles for reliable alignment.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
2014
Total Annual:
1000000-5000000
Employee Number:
110~150
Ecer Certification：
Verified Supplier
Ningbo Suntech Power Machinery Tools Co.,Ltd. is one of the leading and preferred manufacturers and suppliers in China,and deal with electrical facilities products start from year 1995.We have own main product line for stringing blocks,hydraulic Cable Stands,Anti Twist Steel Wire Rope,etc with ... Ningbo Suntech Power Machinery Tools Co.,Ltd. is one of the leading and preferred manufacturers and suppliers in China,and deal with electrical facilities products start from year 1995.We have own main product line for stringing blocks,hydraulic Cable Stands,Anti Twist Steel Wire Rope,etc with ...
