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Different types of linear ball bearing for shaft slide bearings

84 Published by admin Oct 18,2024

Linear ball for shaft slide bearings are a type of rolling or sliding bearing used for linear motion, characterized by low friction, reliable structure, strong load-bearing capacity, high precision for long-distance operation, and long service life. They are commonly used in various industrial machinery and equipment such as machine tools, punch presses, and printers. The linear ball bearing contains a plastic cage to support the hardened steel raceway section that guides the rolling of the ball. The bearing moves on the quenched and polished shaft.

Due to the contact between the bearing ball and the bearing point, a small load is used. The steel ball rotates with minimal frictional resistance, allowing for high-precision and smooth motion.

Plastic linear for shaft slide bearings are a self-lubricating linear motion system, and their biggest difference from metal linear bearings is that metal linear bearings have rolling friction and point contact with cylindrical shafts, making them suitable for low load high-speed motion; Plastic linear bearings have sliding friction and are in surface contact with cylindrical shafts, making them suitable for high load and low-speed motion.Plastic linear bearings can withstand greater loads than metal bearings, but due to the sliding friction between the bearing and the shaft, the speed of movement is limited to a certain extent; The resistance to motion is greater than that of metal linear bearings. Plastic linear bearings are allowed to be used in dusty environments due to their internal chip groove design. Plastic linear bearings also allow for cleaning during use, and the internal sliding film made of special materials can even be used for long-term operation in liquids.

Maintenance of linear shaft slide bearings: Inject anti-corrosion oil into the interior of the linear bearing. If lubricating with grease, first remove the anti-corrosion oil with kerosene or organic solvent, dry it, and then add lubricating grease. If lubricating with oil, it is not necessary to remove the anti-corrosion oil. According to temperature changes, ISO viscosity grade VG15-100 lubricating oil can be selected. Shaft lubrication can be supplied from the oil supply pipe or from the oil hole on the outer bearing seat. Due to the fact that the sealing ring will scrape off the lubricating oil, oil lubrication is not suitable for bearings with sealing rings without holes.