---
title: "Bearing Overheating: Causes from High Speed, Lubricant Shear, and Over-Greasing"
date: 2026-07-22
description: "Bearing Overheating from High Speed, Lubricant Shear, and Over-Greasing Overheating of electric motor bearings can be caused by high rotational speed, lubricant..."
source: https://en.mshjzc.com/industrial-electric-motor-bearings/56374.html
---

# Bearing Overheating: Causes from High Speed, Lubricant Shear, and Over-Greasing

## Bearing Overheating from High Speed, Lubricant Shear, and Over-Greasing

Overheating of electric motor bearings can be caused by high rotational speed, lubricant shear, over-greasing, improper lubricant, heavy loads, incorrect preload, or improper clearance.

## Causes of Overheating

- High Rotational Speed
- Lubricant Shear at High Speeds
- Excessive Lubricant Quantity
- Improper Lubricant Type
- Heavy Loads
- Incorrect Preload or Clearance

## Solutions

Bearings with heat-resistant lubricants are used. Bearings with increased internal clearance are employed. It is recommended to use a cooling system and control lubricant quantity.