A spiral bevel gear is a type of bevel gear designed to transmit power and motion between intersecting shafts at different angles. They feature a helical tooth profile that provides smoother, quieter operation, and greater strength and durability than traditional straight bevel gears. Spiral bevel gears are commonly used in industrial machinery, automotive differentials, and power transmission applications requiring high torque and precision. They are designed for efficient power transmission and minimize friction and wear, making them a reliable and practical choice for many industries.