hajtókarkészlet

A hajtókarkészlet, often translated as a crankset or chainset, is a crucial component of a bicycle's drivetrain. It comprises the crank arms, chainrings, and the bottom bracket spindle. The crank arms are the levers that attach to the pedals and rotate around the bottom bracket. Connected to the crank arms are the chainrings, which are toothed gears that engage with the bicycle chain. The number and size of these chainrings can vary, influencing the bicycle's gear ratios and the effort required to pedal.

The bottom bracket is the bearing system that allows the crankset to rotate smoothly within the bicycle frame. The entire hajtókarkészlet assembly is responsible for translating the rider's pedaling force into rotational motion that is then transferred to the rear wheel via the chain and cassette. Different types of hajtókarkészlet exist, designed for various cycling disciplines such as road cycling, mountain biking, or BMX, with variations in material, weight, stiffness, and gearing options. Maintenance of the hajtókarkészlet, particularly the bottom bracket bearings, is essential for efficient and quiet operation of the bicycle.