YRT rotary table bearing installation guide: the secret to ensure high precision and long life

In the manufacture of precision machinery and automation equipment, YRT turntable bearings have become key components in many industries such as rotary tables, chucks and measuring experimental equipment due to their high tilting stiffness, high precision and suitable characteristics for axial and radial loads. As a leader in the industry, Luoyang Coperion Bearing Co., Ltd. is well aware of the importance of correct installation of YRT turntable bearings. This article aims to provide you with a detailed analysis of the installation steps and precautions of YRT turntable bearings to ensure that your equipment can operate stably and achieve optimal performance.

Preparation before installation

1. Cleaning and inspection

Before installation, first, you need to thoroughly clean the surface, lubrication holes, and bolt holes of the YRT turntable bearing, remove burrs, and ensure that the surface is dry. At the same time, check the size of the shaft and the bearing seat hole, the flatness and parallelism of the end face, and the verticality of the radial and axial faces to ensure that all components meet the design requirements.

2. Reference tolerance standards

The tolerance of the manufacturing shaft needs to be strictly controlled. For high operating accuracy requirements, the clearance between the inner ring and the shaft should be as close to zero as possible; when running at high speed or for a long time, the interference should not exceed 10μm. The tolerance of the bearing seat is equally important. For high running accuracy and outer ring rotation fit, the clearance should be as close to zero as possible. When running at high speed or for a long time, a clearance of at least 0.02mm should be maintained between the outer ring and the bearing seat to reduce heat generation and increase in preload.

Installation steps

1. Handling and protection

When handling YRT turntable bearings, be sure to handle them gently to avoid collision and damage. You can use a crane for lifting, but you should use lifting ears and use the reserved lifting holes on the outer ring of the bearing to ensure transportation safety.

2. Loosening and tightening bolts

In order to make it easier to center the bearing, the connecting bolts of the bearing itself need to be loosened before installation. During installation, according to the given tightening torque, use a torque wrench to tighten the bolts in three stages (40%MA, 70%MA, 100%MA) according to the "cross method". This not only ensures that the bolts are evenly stressed, but also effectively prevents the separation of the rings.

3. Inspection and adjustment

After installation, check whether the bearing rotates smoothly and whether the accuracy is up to standard. If there is a blockage in the rotation or the friction torque is too large, it may be caused by reasons such as the bolt grade is too high, the locking torque is too large, or the structural parts have poor precision. Timely adjustments and repairs are required.

Installation precautions

1. Apply installation force

The installation force can only be applied to the bearing ring to be installed. It is strictly forbidden to apply force through the rolling element to avoid damaging the bearing.

2. Bolt grade

The grade of the installation bolt should reach 10.9 or above to ensure the strength and stability of the connection.

3. Avoid knocking

During the installation process, it is strictly forbidden to knock the bearing to avoid irreversible damage to the bearing.

4. The components cannot be disassembled

During the installation and removal of the bearing, the bearing components cannot be disassembled or interchanged to maintain their original accuracy and performance.

The correct installation of YRT turntable bearings is essential to the overall performance and service life of the equipment. Luoyang Coperion Bearing Co., Ltd. has always been committed to providing customers with high-quality bearing products and professional technical support. Through the introduction of this article, I hope to help you better understand and master the installation skills of YRT turntable bearings to ensure that your equipment can run stably and efficiently. If you have any questions or need further technical support, please feel free to contact us!