Blocks and heads are the main components in an engine, which is at the heart of any automobile. Forging these components requires a high level of technology and the strictest quality management. We reliably mass produce and supply a wide variety of components for various engine displacement sizes, ranging from 1.7L to 15L.
Nowadays, engines tend to be smaller to comply with exhaust emission and fuel economy regulations, and this tends to lead to hotter exhaust temperatures. When exhaust temperatures rise, expansion and contraction of components increase under the cooling and heating cycle; furthermore, cast iron products can break or crack more easily. In addition, casted products' mechanical properties at normal temperatures are impaired if they are heated. Some traditional materials do not function properly in such circumstances. TDF Corporation develops and mass produces new materials to meet these stringent requirements.
Hubs are made of durable materials that do not break, even when moving loads in GVW 3-ton to 25-ton vehicles, and brake drums are made of material that can withstand the thermal fatigue of repeated braking. We produce both of these using an integrated process from casting to machining and assembly.
Large components are casted in automated molds. The manufacturing process is completed with machining and assembly.
The arms of excavators in construction equipment use particularly complex movements. Therefore, the valves that control these movements-in other words, the cast components that are fundamental to an excavator-need to be strong enough to withstand complex hydraulic circuits and high hydraulic pressure. Making strong castings for complex hydraulic circuits requires a high degree of casting technology, which we have accumulated over the long period in which we have run our business. We use sand-casting techniques for mass production (particularly for large products in excess of 100 kg). Even in Japan, only certain casting companies are able to do this.
Excavators use hydraulic motors to move and turn their cab arms. Rear covers are components of hydraulic motors, the central part of the drive movement. As cast products, they need to be of high quality.
These are essential parts that transform the power from engines into drive power. These are widely used in passenger vehicles and large trucks as well as construction vehicles.
These components are used to move concrete mixers, dump trucks, fire engines, and other vehicles equipped with pumps.
Flywheels and Drive Plates
These parts transmit engine power to the drive system, with flywheels being used in manual-transmission vehicles and drive plates being used in automatic vehicles.
These parts, fixed around the outer rim of the flywheel and drive plate, transmit starter motor power to the crankshaft when starting the engine.
These components are used in the front axles of trucks. Because they are essential in supporting heavy loads, they are designated as "critical safety parts" and need to be highly robust and of the highest quality.
The function of this component is to transmit drive power to the wheels. It is used in the rear axles of trucks.
This is one of the "5C parts" and is a major engine component. Its function is to convert pistons' repeat up-and-down motion to a rotational motion.