
Uncompromising reliability is a necessary requirement for brakes for trucks, buses, trailers, and industrial equipment. All Japanese heavy-duty vehicle manufacturers use TBK drum brakes. They have attained the largest market share in drum brakes by successfully manufacturing and standardizing products of higher quality and reliability.
Besides main drum brakes for heavy-duty vehicles (payloads of 10 tons or more), they manufacture drum brakes for medium-duty vehicles (payloads of four tons or more) and light-duty vehicles (payloads of one to two tons).

The TBK Group is a major player in the development, production and sales of components such as brakes, water pumps for engine cooling and oil pumps for engine lubrication. These components are essential to the safety and efficiency of small to large vehicles and buses.Water pumps for cooling engines have a direct impact on engine power, since precise temperature control is a must for optimal engine performance.TBK develops pumps based on the engine specifications of these manufacturers. With a full lineup of water pumps for cooling engines, they strive to meet all of the customers' requests.Market share in medium- to heavy-duty vehicles in Japan is 73%.

The TBK Group is a major player in the development, production and sales of components such as brakes, water pumps for engine cooling and oil pumps for engine lubrication. These components are essential to the safety and efficiency of small to large vehicles and buses.TBK develops and makes oil pumps for vehicles of all sizes. They were the first to develop and commercialize oil pumps with adjustable output control and energy-saving oil pumps. Market share in medium- to heavy-duty vehicles in Japan is 92%.