7 Inch Universal Cable Roller Stringing Blocks 10kN Φ178*76mm
Single Sheave Cable Pulling Blocks with Crossarm Caliper
Product Overview
The CSB 7" universal cable roller and stringing block is engineered
for transmission line installation, cable pulling, and power line
construction. With a 10kN rated load and Φ178*76mm sheave, this
cable pulling block delivers stable cable guiding support during
overhead line installation.
The adjustable crossarm caliper enables mounting on crossarms with
widths from 99-175mm and heights from 95-159mm. Its lightweight
4.3kg design facilitates easy transport, installation, and
operation on site.
Common Challenges
During transmission line installation and cable pulling operations,
contractors frequently encounter:
- Cable friction during pulling operations
- Difficult cable guiding on crossarms
- Unstable roller positioning during overhead line work
- Low efficiency when installing temporary cable rollers
- Heavy tools increasing labor intensity at height
Root Causes
These operational challenges primarily result from:
- Improper roller size causing cable wear
- Unstable mounting structure on crossarms
- Insufficient load capacity for field pulling work
- Heavy pulley blocks increasing installation difficulty
- Lack of adjustable tools for different crossarm sizes
Engineering Solution
The CSB 7" universal cable roller addresses these challenges
through:
- 10kN rated load for stable cable pulling support
- Φ178*76mm sheave for smooth cable guiding
- Single sheave structure for simple and efficient operation
- Adjustable crossarm caliper for 99-175mm crossarm width
- Lightweight 4.3kg design for easy field installation
- Suitable for transmission line and power line installation work
Technical Specifications
| Parameter | Value | Engineering Significance |
|---|
| Model | CSB | Universal cable roller and stringing block |
| Rated Load | 10 kN | Suitable for light and medium cable pulling work |
| Sheave Dimensions | Φ178 * 76 mm | 7 inch sheave for smooth cable guiding |
| Number of Sheaves | Single Sheave | Simple structure, easy installation |
| Block Weight | 4.3 kg | Lightweight for field operation |
| Caliper Crossarm Width | 99-175 mm | Fits different crossarm sizes |
| Caliper Height | 95-159 mm | Adjustable mounting range |
| Caliper Weight | 1.6 kg | Portable crossarm fixing accessory |
| Application | Transmission Line / Cable Pulling / Power Line Installation | Suitable for overhead line construction |
Operational Principle
During pulling or stringing operations, the cable passes through
the rotating sheave. The Φ178*76mm sheave guides the cable smoothly
and reduces friction during installation.
The adjustable caliper securely fixes the roller onto the crossarm,
maintaining stability during operation. This design makes the tool
ideal for overhead line installation where temporary cable guiding
is required.
Key Advantages
7 Inch Universal Sheave Design
The Φ178*76mm sheave provides smooth cable guiding and reduces
pulling friction during line installation.
10kN Rated Load
The 10kN rated load capacity makes the cable roller suitable for
common cable pulling and transmission line installation work.
Adjustable Crossarm Caliper
The caliper accommodates crossarm widths from 99-175mm and heights
from 95-159mm, ensuring adaptability to various site conditions.
Lightweight Field Operation
With a block weight of 4.3kg and caliper weight of 1.6kg, the tool
is easy to transport and install during overhead line construction.
Suitable for Power Line Installation
The roller is specifically designed for transmission line
installation, cable pulling, and overhead power line work.
Applications
This 7" universal cable roller and stringing block is widely used
for:
- Transmission line installation
- Power line construction
- Cable pulling operation
- Overhead line installation
- Crossarm cable guiding
- Utility construction work
- Temporary cable support during stringing
Selection Guidelines
Based on Load Requirements
For light and medium cable pulling work, the 10kN rated load is
suitable. For heavier conductor pulling, choose a higher load
stringing block.
Based on Installation Position
For crossarm installation, choose this model with adjustable
caliper. For ground cable laying, select ground cable roller type.
For corner pulling, choose corner cable roller type.
Based on Cable Size
For small and medium cables, the Φ178*76mm sheave is suitable. For
larger cables or conductors, choose larger diameter stringing
blocks.
Based on Working Conditions
For overhead line work, choose lightweight and portable structure.
For long-distance pulling, use multiple cable rollers to reduce
friction and protect the cable.
Frequently Asked Questions
Q1: What is the rated load of the CSB cable roller?
A: The rated load is 10kN.
Q2: What is the sheave size?
A: The sheave size is 7 inch, with dimensions of Φ178*76mm.
Q3: Can it be mounted on a crossarm?
A: Yes. It comes with an adjustable caliper suitable for crossarm
widths from 99-175mm and heights from 95-159mm.
Q4: What is the weight of the block?
A: The block weight is 4.3kg, and the caliper weight is 1.6kg.
Q5: What applications is it suitable for?
A: It is suitable for transmission line installation, cable
pulling, overhead line installation and power line construction.
Q6: Can the design be customized?
A: Yes. Sheave size, frame structure and mounting type can be
customized according to project requirements.
