B-Type V-Belts

B Section V-Belts are among the most widely used classical V-belts in industrial applications thanks to their high power transmission capability, stable pulley grip, and heavy-load performance. With a thick, robust structure and clearly defined technical standards, B Section V-belts are commonly found in both industrial and agricultural machinery. If you are looking for technical specifications and a standard size reference table, the content below will help you understand everything clearly and accurately.

Introduction to B Section V-Belts

B Section V-Belts are classical V-belts with a larger cross-section than A Section belts, specifically designed for high-power and heavy-duty transmission systems such as generators, air compressors, crushers, industrial motors, and many other machines.

With a standard V-shaped profile, B Section V-belts provide:

• Strong pulley grip
• Stable power transmission
• Reduced slippage
• Long service life under continuous operation

Other common names:

• B Section V-Belt
• B Type V-Belt

B Section V-belts are widely used across various production and manufacturing industries.

>> See Also: A Section V-Belt Supplier | Full Size Range – Belota

Standard Technical Specifications of B Section V-Belts

Notes on belt length:

• Li: Inside length
• Ld / La: Nominal or reference length

Length conversion depends on manufacturer standards

Length code examples:

• B60 = 60 inches ≈ 1524 mm
• B72 = 72 inches ≈ 1829 mm

B Section V-Belt Size Reference Table by Product Code

How to Read B Section V-Belt Codes Correctly

1. Belt code structure

A B Section V-belt code consists of one letter + numbers:

• B: Belt cross-section (17 mm top width, 11 mm height, 40° angle)
• Numbers: Belt length in inches

Examples:

• B60 → 60 inches
• B85 → 85 inches
• B100 → 100 inches

2. Quick inch-to-mm conversion

1 inch = 25.4 mm

Examples:

• B60 = 1525 mm
• B85 = 2160 mm
• B100 = 2540 mm

3. Common length symbols

• Li: Inside length
• La / Ld: Nominal or outside length

Examples:

• B72 Li: 72-inch inside length
• B85 Ld: 85-inch nominal length

If no symbol is specified, the belt uses the default standard length.

Key Advantages of B Section V-Belts

High transmission efficiency

Thanks to the larger cross-section and 40° V-angle, B Section belts provide excellent pulley grip, ensuring strong, stable power transmission with minimal slippage—even during continuous operation.

Durability and wear resistance

Manufactured from synthetic rubber, tensile cords, and abrasion-resistant fabric layers, these belts perform reliably in harsh environments and resist cracking, hardening, and elongation over time.

Heavy-load capability

Compared to A Section belts, B Section V-belts are thicker and stronger, making them ideal for heavy-duty industrial machinery operating at high loads and speeds without deformation or belt drop.

Applications of B Section V-Belts in Industry

B Section V-belts are widely used due to their high load capacity, strong grip, and stable operation, including:

• Agricultural machinery: rice mills, water pumps, crushers, threshers
• Industrial machines & motors: industrial fans, air compressors, woodworking machines
• Conveyor systems: driving pulleys for stable material handling under heavy loads
• Continuous production equipment: factory lines requiring long operating hours without overheating or belt stretching
• High-power machinery: applications demanding higher strength than A Section belts

>> See Also: Gates V-Belts | Official Supplier, Full Range – Belota

FAQ – Frequently Asked Questions About B Section V-Belts

What is a B Section V-Belt?

A B Section V-Belt is a trapezoidal power transmission belt with a 17 mm top width, 11 mm height, and a 40° angle. It is larger than A Section belts and designed for heavy-duty, continuous-operation machinery.

What machines use B Section V-Belts?

Common applications include:

• Agricultural machines: mills, pumps, crushers
• Industrial equipment: motors, compressors, fans
• Conveyor systems and production lines requiring stable heavy-load transmission

What do B60, B72, B85 mean?

These are belt length codes:

• B indicates B Section
• Numbers represent belt length in inches
• The larger the number, the longer the belt.

How often should B Section V-Belts be replaced?

Typical replacement intervals:

• 6–12 months for continuous or heavy-load operation
• 12–24 months for light or intermittent use

Replace immediately if the belt shows cracks, edge wear, excessive elongation, slippage, or abnormal noise.

Trusted Supplier of B Section V-Belts

Stable transmission, strong pulley grip, and long-lasting performance - Belota B Section V-Belts are the optimal choice for modern industrial machinery. We provide:

✅ High-quality materials – durable synthetic rubber and reinforced tensile cords

✅ Optimal transmission efficiency – reduced slippage, stable torque

✅ Wide product range – V-belts, timing belts, PU belts, flat and round belts

✅ Custom sizing – cut-to-length based on load, speed, and pulley type

✅ Industrial-grade safety – oil-resistant, heat-resistant options

✅ Professional technical support – precise belt selection for every application

✅ Fast installation & replacement – nationwide service

✅ Reduced operating costs – less stretching, less maintenance

✅ Easy integration – compatible with pumps, compressors, CNC machines, conveyors

📞 Contact Belota at 0917 657 946 for expert consultation and the right belt solution for your system.

>> See More: Drive Belts – Full Range, High Performance & Competitive Prices