Quadrant Block | 90° Cable Turns | 4800 lb | 24.25" Radius
Heavy-Duty Quadrant Block | 6 Sheave Cable Guide | 4,800 lb Capacity | Smooth 90° Cable Pulling for Manhole & Duct Installations — Product Overview
The Condux Heavy-Duty Quadrant Block provides precise cable handling for demanding utility, telecom, and fiber optic installations. Featuring six cast aluminum or Nylatron sheaves mounted on bronze bearings, it allows cables to make a smooth 90° turn with minimal friction and wear. Designed with a 24.25″ (616 mm) pulling radius and a load capacity of up to 4,800 lbs (21,350 N), this quadrant block delivers the strength and control required for high-tension cable pulls.
Whether suspended in a manhole or used to align cables with conduit runs, the Heavy-Duty Quadrant Block enhances job site efficiency and cable protection. Its durable design minimizes stress during pulls while extending the life of both cables and equipment. Replacement sheaves are available for long-term maintenance and cost-effective performance.
Compatible Support Bar
For manhole suspension and proper positioning during cable pulls, pair this block with the Condux Quadrant Block Support Bar. View compatible support bar here >
Key Features
- 6 Sheave Options: Available with cast aluminum or Nylatron sheaves, each mounted on bronze bearings for smooth, long-lasting operation.
- 90° Cable Turning: Provides a gradual, precise bend that minimizes friction and cable wear during installation.
- 24.25″ Pulling Radius: Optimized for flexibility and accuracy in confined manhole or duct environments.
- 4,800 lb Capacity: Handles heavy cable tension loads with consistent, reliable strength.
- Manhole Suspension: Easily mounted or suspended for precise duct alignment and reduced pulling strain.
- Durable Construction: Built from corrosion-resistant, high-strength materials to withstand long-term field use.
- Replacement Sheaves Available: Extend the product lifespan with easy-to-install replacement parts.
Ordering Information
| Part Number | Nylatron Part Number | Size (in) | Size (mm) | Radius (in) | Radius (mm) | Load Capacity (lbs) | Load Capacity (N) |
|---|---|---|---|---|---|---|---|
| 08539100 | 08539110 | 4 | 102 | 24.25 | 616 | 4,800 | 21,351 |
| 08539200 | 08539210 | 5 | 127 | 24.25 | 616 | 4,800 | 21,351 |
| - | 08539650* | 6 | 152 | 26.00 | 660 | 10,000 | 44,482 |
| 08539710 | 08539700 | 8 | 200 | 37.75 | 959 | 10,000 | 44,482 |
Note: Support bar sold separately. Replacement sheaves are available for extended product life.

