How to Disassemble and Replace Oscillating Motor Bearings

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Oscillating motors are essential components in various screening equipment, providing the necessary vibration for efficient material separation. These motors typically come in two types: vertical and horizontal. The vertical oscillating motor is commonly used in vibrating screens, while the horizontal version is suitable for a wide range of oscillating screening applications. As the main source of excitation, the oscillating motor plays a crucial role in the performance of the screen. These motors are equipped with heavy-duty bearings designed to handle axial loads in any direction without compromising their lifespan. Proper maintenance and timely replacement of these bearings are vital to ensure the motor continues to operate efficiently. ### Step-by-Step Guide to Replacing Oscillating Motor Bearings 1. **Disassembling the Bearing** - Remove the protective covers from both ends of the motor (note that vertical models may not have them). Record the eccentric force setting during operation so you can restore it later. - Use a retaining ring to remove the Shaft at both ends. - Loosen the outer bolts and remove the outer bearing block, along with the shaft key. Then loosen the inner bolt and take out the inner bearing block. - Remove the bearing housing compression bolt and use a suitable screw to push the bearing housing out of the casing. - Take off the bearing gland and carefully push the bearing out of the housing or use a suitable bolt to assist in removal. - If the bearing is a separable cylindrical roller type, remove the inner sleeve from the shaft and place it back into the original housing. - Clean all parts thoroughly to remove any remaining oil or debris. 2. **Installing the New Bearing** - Ensure the new bearing matches the original specifications. - Wash the bearing with kerosene and press it into the bearing seat. Fill the outer ring housing with Shell No. 3 lithium grease up to two-thirds full, ensuring even distribution. Install the bearing gland and secure it with anti-loose rubber washers. - For separable cylindrical roller bearings, position the bearing correctly on the rotating shaft. - Mount the bearing housing onto the casing, aligning it if there is a grease injection hole. Tighten the fastening bolt using anti-loose rubber. - Place the bearing block on the shaft and secure it. If there is a keyway, insert the shaft key before installing the external bearing block. Fit the shaft retaining ring in place. - Tighten the bearing block fastening bolt and adjust the adjustable block to the correct position before tightening. After assembly, the shaft should have slight axial movement. - Finally, reattach the protective covers on both ends of the oscillating motor and secure them with screws. ### Tips for Maintenance and Replacement Regular inspection of the oscillating motor and its bearings is essential to detect wear and prevent unexpected failures. Always use high-quality replacement parts that match the original design. When replacing, follow the manufacturer's guidelines closely to ensure proper installation and long-term performance. By understanding the process of disassembling and replacing oscillating motor bearings, operators can extend the life of their equipment and maintain optimal performance. Whether you're working on a vertical or horizontal model, careful attention to detail during the replacement process will help avoid future issues. For more information on bearings and their applications, check out our related articles: - Bearing Application and Protection - SKF Bearings: Interference Fit Elements - 10 Ways to Distinguish Genuine FAG Bearings - Understanding Magnetic Bearings This article was originally published on China Bearing Network. Please cite the source when sharing. Link to this article: http:// Original Source: http://www.chinabearing.net/

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