How to choose lubricant for skate wheel bearings?

The development momentum of my country's skate wheel bearings manufacturing industry is strong, which will bring positive effects to the steady improvement of the bearing steel market. The demand for a number of high-end bearings has increased significantly, such as aerospace bearings, high-speed precision bearings for machine tool spindles, precision angular contact ball bearings for ball screw support, high-speed electric spindle bearings, precision bearings for machine tools in the photovoltaic industry, turntable bearings, wind turbine bearings, Joint bearings for shield machines, rolling mill bearings, high-speed rail bearings, automotive bearings, pulley bearings for cranes, turbocharger bearings, hydrodynamic bearings, etc.

The lubricant inside the pulley bearing can be roughly divided into two types: oil and grease. Basically, most of the lubricants used in the production of pulleys are grease lubricants, and some products on the market use oil as lubricants.

The selection of skate wheel bearings lubricant mainly considers the use temperature, load, speed and working environment, and distinguishes rolling bearings or sliding bearings and chooses grease or oil for lubrication. Most rolling bearings are lubricated with grease. Most sliding bearings are lubricated with oil. Generally speaking, low-speed skate wheel bearings are suitable for grease lubrication, and high-speed bearings are suitable for oil lubrication.

1. Definition of equipment speed

List the basis for defining the high, medium, and low speeds of the equipment during operation, as well as the operating speed limit value of the grease lubrication equipment. The speed limit of grease-lubricated rolling skate wheel bearings is 350,000, the speed limit of lubricated sliding skate wheel bearings is 5m/s, the speed limit of lubricated gears is 10m/s, and the speed limit of lubricated turbines is 5m/s. When the equipment operating speed exceeds the limit, grease lubrication should not be used.

2. Definition of equipment load

The definition of equipment load is listed. Extreme pressure grease lubrication should be selected for medium and high-load operating equipment.

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