Overview
The Bando B-91 V-belt is a classical cross-section power transmission belt engineered for reliable operation in industrial drive systems. This belt measures 91 inches in length, 0.66 inches in width, and 0.41 inches in height. The B-91 is a practical, economical, and dependable belt for most industrial drives; innovations have failed to displace the need for classical section belts, and Bando’s constant improvements in materials, design, and manufacturing methods help it keep pace with industry’s ever-increasing demands for long, trouble-free belt service.
Key Features
- Bias-cut, rubber-impregnated fabric cover with super flexibility and friction resistance; fully oil and heat resistant to protect inner components.
- Ultra-high strength polyester tensile cords assure fatigue resistance and length stability, with each cord chemically treated to bond securely to insulation and compression sections.
- Specially compounded compression section provides flexibility to reduce heat buildup while bending around sheaves, delivering cooler-running, longer-lasting performance.
- Single-layer fabric wrapped belt design protects the belt core from oil, dirt, and heat; suitable for clutching applications.
- Meets RMA standards for oil and heat resistance and static conductivity.
Technical Specifications
- Outside Length: 94 inches
- Top Width: 0.66 inches (21/32 inch)
- Belt Depth/Thickness: 0.41 inches (13/32 inch)
- Section Size: B (Classical)
- Number of Ribs: 1
- Tensile Material: Polyester
- Outer Material: Rubber and Fabric
- Minimum Pulley Diameter: 4.41 inches
- Operating Temperature Range: -1 to 158°F
Typical Applications
The Bando B-91 is practical for most industrial drives. Classical section V-belts are widely used in:
- Agricultural equipment and cooling fan systems
- Industrial motor-driven machinery
- HVAC systems and ventilation equipment
- Pump and compressor drives
- Machine tool applications
Compatibility & Replacements
Compatible With
- Standard B-section grooved pulleys and sheaves
- Industrial electric motors with shaft-mounted pulleys
- Belt drive systems requiring classical V-belt configuration
- Equipment designed for 0.66-inch-wide belt applications
Replaces / Drop-In Replacement For
- Gates Rubber B-91 equivalents
- Other OEM B-91 classical V-belt applications
- Previous-generation B-section belts requiring 94-inch circumference
Works With
- Standard B-section pulley grooves (classical V-belt profile)
- Direct-drive and belt-reduction systems
- Systems using RMA-compliant V-belt specifications
