一个切向键只能传递一个方向的转矩，传递双向转矩时，须用互成120°～130°角的两个键。用于载荷很大，圣霖联接机生产，对中要求不严的场合。由于键槽对轴削弱较大 ，常用于直径大于100mm的轴上。

A tangent key can only transfer the torque of one direction. When the two-way torque is passed， the two keys of 120 to 130 degrees are required. An occasion for heavy load and no strict requirement. As the keyway is greatly weakened to the axis， it is often used on a shaft with a diameter larger than 100mm.

楔键联接：键的上下两表面是工作面，圣霖联接机采购，键的上表面和轮毂键槽底面均有1∶100的斜度，装配后，键即楔紧在轴和轮毂的键槽里，工作表面产生很大预紧力。

Wedge key connection: the upper and lower two surfaces of the key are the working faces. The upper surface of the key and the bottom of the hub keyway have 1 to 100 slope. After assembly， the key is wedged tightly in the keyway of the shaft and hub， and the working surface has a large pre tightening force.

键是一种标准件，通常用于联接轴与轴上旋转零件与摆动零件，圣霖联接机购买，起周向固定零件的作用以传递旋转运动和扭矩，楔键还可以起单向轴向固定零件。而导键、滑键、花键还可用作轴上移动的导向装置。 根据键的结构形式，键联接可分为平键联接、半圆键联接、楔键联接和切向键联接等几类。

The key is a standard part， which is usually used to connect the rotating parts and swing parts of the shaft and the axle to move the fixed parts to transmit rotary motion and torque， and the wedge key can also play a one-way axial fixation part. The guide，圣霖联接机， slippery key and the spline can also be used as a guiding device for moving on the axis. According to the structure of the key， key joins can be divided into a flat bond， a semicircle bond， a wedge bond and a tangent bond.

圣霖联接机购买-圣霖国际【创新发展】-圣霖联接机由鞍山市圣霖进出口贸易有限公司提供。鞍山市圣霖进出口贸易有限公司（shenglininternational.cn）实力雄厚，信誉可靠，在辽宁 鞍山 的行业专用设备等行业积累了大批忠诚的客户。公司精益求精的工作态度和不断的完善创新理念将引领圣霖国际和您携手步入，共创美好未来！