HANGZHOU DECENT AUTO PARTS CO., LTD.

The tensioner bearing is a precision component specially used for the tensioning device of the transmission system. It is the core component of the stable operation of the transmission system. As a key component in the transmission system of automobiles and various mechanical equipment, it plays an irreplaceable role in maintaining the appropriate tension of the belt or chain and ensuring the power transmission efficiency.

1. According to the difference in internal structure, the tensioner bearing is mainly divided into two types: single groove and double groove:

(1) The single groove structure is relatively simple and suitable for light load occasions.

(2) The double groove design can withstand greater radial loads and is common in heavy load application scenarios.

2. From a functional perspective, the tensioner bearing can be divided into the following types:

(1) Timing tensioner bearing: specially used in the engine timing system, it can automatically adjust the tensioning angle according to the changes in the belt, so that the belt always maintains the appropriate tension and ensures accurate valve timing. This type of bearing usually has higher precision requirements and stronger temperature resistance to cope with the high temperature environment in the engine compartment.

(2) Accessory tensioner bearing: It is composed of bearings, springs and aluminum castings. Some tensioners with spring structures are simple and reliable, while others are designed with rubber components to achieve longer life by utilizing the elastic properties of rubber. This type of bearing is widely used in engine accessory drive systems, such as belt tensioning devices for air-conditioning compressors, generators and other equipment.

(3) Idler bearing: It is a special tensioner bearing, which is composed of a radial deep groove ball bearing with injection molding material attached to the outer diameter surface of the outer ring, bolts, nuts and other components. It is easy and quick to install. The idler mainly assists the tensioner in its operation, by changing the direction of the belt and increasing the belt and pulley inclusion angle, thereby improving the stability and friction of the belt operation.

(4) One-way pulley bearing: When the engine is running at a constant speed and accelerating, the pulley drives the inner ring to operate normally; when the generator is decelerating, the outer ring and the inner ring slip relative to each other, realizing the overrunning function and making the generator work more efficiently. This design reduces belt deflection and noise, and reduces power energy consumption.