EX135 Swing Bearing 71463540
The swing bearing in the EX135 excavator, which is manufactured by Hitachi Construction Machinery, is a critical component that supports the upper structure of the excavator and allows it to rotate smoothly. The swing bearing, also known as a Slewing Bearing or turntable bearing, is typically located at the base of the excavator's upper structure and provides a stable platform for the rotation of the superstructure.
Here are some general features and specifications of the swing bearing commonly found in excavators like the Hitachi EX135:
1. **Type**: The swing bearing is typically a large-diameter, single-row or double-row ball bearing or roller bearing, depending on the size and load capacity requirements of the excavator. These bearings are designed to withstand axial and radial loads and provide smooth rotation with minimal friction.
2. **Material**: Swing bearings are commonly made of high-quality steel, often alloyed with other metals for increased strength, durability, and resistance to wear and corrosion. The raceways and rolling elements are precision-machined to ensure smooth operation and long service life.
3. **Sealing**: Swing bearings are often equipped with sealing arrangements to protect the internal components from contamination by dust, dirt, water, and other environmental elements. Seals help to maintain lubrication and prevent premature wear and damage to the bearing.
4. **Lubrication**: Proper lubrication is essential for the smooth operation and longevity of the swing bearing. Grease fittings or lubrication channels are typically provided to facilitate periodic greasing of the bearing surfaces.
5. **Load Capacity**: The swing bearing is designed to support the weight of the upper structure of the excavator, including the boom, arm, bucket, and cab, as well as any additional attachments or loads. The bearing's load capacity is determined based on factors such as the size of the excavator and the maximum operating load.
6. **Installation and Maintenance**: Proper installation and regular maintenance are essential to ensure the optimal performance and longevity of the swing bearing. Installation typically involves precision alignment and torqueing of fasteners to manufacturer specifications. Regular inspection, lubrication, and replacement of worn components are necessary to prevent premature failure and ensure safe operation.
7. **Compatibility**: When replacing or servicing the swing bearing, it's crucial to use compatible parts and follow manufacturer recommendations to maintain the integrity and performance of the excavator's rotating assembly.
Specific details about the swing bearing used in the Hitachi EX135 excavator, such as its exact specifications, dimensions, and part numbers, can be found in the excavator's technical manual or parts catalog provided by Hitachi Construction Machinery. If you require precise information about the EX135's swing bearing, consulting Hitachi's official documentation or contacting their customer support would be the best course of action.
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