Polyurethane plum-shaped elastic block

Polyurethane plum-shaped elastic block use:

This plum blossom cushion standard is suitable for the connection of large equipment and various mechanical cushions acting on the transmission shaft.

Torque: 22.4—2500NM

Wear: <0.05cm3 / 1.61km

Product hardness: 9 ±5

Standard: GB5272-85

Specification: MT1—MT14

Elastic parts: a is polyester polyurethane (UR) orange b is cast nylon (PA) red

Characteristics of polyurethane plum-shaped elastomer:

1. The pin of the elastic sleeve pin coupling is covered with a rubber ring, which has elasticity and the ability to compensate the axis displacement, but when the relative angular displacement is large, it is easy to wear.

2. Simple structure, convenient installation, easy replacement, small size, light weight, large transmission torque, widely used in various rotary pumps.

3、许用相对径向位移0.14-0.2mm；许用相对角位移0度40分。

4. The additional radial load caused by the relative displacement of the two shaft axes is (0.1-0.3)P.

5. The standard of the water pump industry is Bll01, its torque is 8316Nm, and its shaft diameter is 200mm.

Polyurethane plum-shaped elastomer has excellent oil resistance, tear resistance, and chemical resistance. However, the polyurethane plum-shaped elastic block has poor heat resistance and is easy to soften and decompose at high temperatures, resulting in sharp mechanical properties. Decrease, the long-term use temperature can not exceed 80 degrees Celsius.

Nitrile rubber (NBR) is a synthetic rubber made by copolymerization of butadiene and acrylonitrile. It has excellent oil resistance, good, good elasticity, and can be used in the air at 120 degrees Celsius or in oil at 150 degrees Celsius for a long time. use.

Fluid coupling (hydraulic coupling, hydraulic coupling) is a widely used hydraulic transmission component.The power machine drives the coupling pump wheel to rotate, and the pump wheel blades agitate the working fluid in the cavity. Under the centrifugal action, the pump wheel converts mechanical energy into liquid energy and transfers it to the turbine blades, and the turbine transfers the absorbed liquid energy to the working machine.The transmission medium of the power machine and the working machine is liquid, so its advantages are those of other power connection equipment.

The fusible plug is an overheating protection device for the moment-limiting coupling, and the general melting temperature is 125 degrees Celsius.Due to the inherent slip characteristics of the coupling, it is permissible for the coupling to reach a temperature of about 80 degrees Celsius during normal operation.

Therefore, the polyurethane plum blossom-shaped elastic block is applied to the coupling of the fluid coupling. If the coupling itself has a high operating temperature, it is prone to softening and deformation, which may cause collision and damage to the metallic claws of the plum blossom coupling.Compared with the inferior black rubber plum blossom cushion, the performance of the polyurethane plum blossom cushion is really better.But as long as the coupling plum is usedMade of nitrile rubber, the concentricity of the coupling installation meets the installation requirements, and the performance of the nitrile rubber plum blossom gasket can meet the normal operation needs of the coupling.It cannot be one-sidedly considered that the material of the plum blossom pad for the coupling is better than the nitrile black rubber.

Parameters of polyurethane plum-shaped elastic block:

Hebei Polyurethane Plum Blossom Elastic Block　Hebei Polyurethane Plum Blossom Elastic Block