Selecting the right V-belt type significantly impacts drive efficiency and belt life. This guide explains the differences between classical, wedge, and cogged V-belts.
Classical V-Belts (A, B, C, D Sections)
The most common type. Suitable for standard industrial drives. Good grip, moderate efficiency (93-96%). Available in wrapped and raw edge versions. Best for: Fans, pumps, compressors, general machinery.
Wedge V-Belts (SPZ, SPA, SPB, SPC)
Narrower and deeper profile than classical belts. Transmit up to 1.5x more power in the same space. Higher efficiency (95-98%). Best for: High-power drives, compact installations, new equipment design.
Cogged V-Belts (AX, BX, CX)
Notched underside for better flexibility around small pulleys. Run cooler at high speeds. Better heat dissipation. Best for: Small pulley diameters, high-speed applications, reversing drives.
Key Selection Factors
• Power requirement (kW/HP)
• Speed ratio between pulleys
• Available space (center distance)
• Pulley diameters
• Operating environment (temperature, oil, dust)
BasonDrive stocks all three V-belt types with same-day shipping on standard sizes. Use our online selector tool for quick recommendations.
Need Expert Help?
BasonDrive engineers are available for free technical consultation. Whether you need help with belt selection, installation, troubleshooting, or custom solutions — we are here to help. With 20+ years of experience across 12+ industries, we deliver practical, actionable advice.