Best Main Shaft Bearings of 2025

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Main shaft bearings are an essential component of many industrial machines, including turbines, generators, and heavy-duty vehicles. These bearings are designed to support the weight of the rotating shaft, reducing friction and ensuring smooth operation. They come in a variety of sizes and materials, including steel, bronze, and ceramic, to suit different applications and operating conditions. Main shaft bearings are built to withstand high loads, shock, and vibration, making them ideal for use in heavy-duty environments. With their reliable performance and long service life, main shaft bearings are a vital part of many industrial operations.
At a Glance: Our Top Picks
Top 5 Main Shaft Bearings
ACDelco GM Main Shaft Rear Bearing
The ACDelco GM Original Equipment 88996720 Manual Transmission Main Shaft Rear Bearing is a recommended replacement part for your GM vehicle, offering the same quality, reliability, and durability as the original factory component. This main shaft bearing is manufactured to GM OE specification for fit, form, and function and falls under the category of Main Shaft Bearings.
ACDelco GM OE 96108006 Transmission Bearing
This is a GM-recommended replacement bearing designed to offer the quality, reliability, and durability of GM OE. It is manufactured to GM OE specification for fit, form, and function, ensuring it is perfect for your GM vehicle's original factory component. The bearing is ideal for use as a manual transmission main shaft rear bearing, and falls under the Main Shaft Bearings category.
ACDelco GM Manual Transmission Bearing
The ACDelco GM Original Equipment S1314 Manual Transmission Main Shaft Rear Bearing is a high-quality replacement part for your GM vehicle's original factory component. It offers the same reliability, durability, and fit as the OE part, ensuring your vehicle runs smoothly. The bearing is manufactured to GM OE specifications for precise fit, form, and function. It falls under the category of main shaft bearings.
febi bilstein 37930 Main Bearing for Transmission Shaft
This main shaft bearing is a direct replacement for the original part with matching original equipment quality. It is important to check the application before fitting to the vehicle and must be installed by a qualified technician.
Sealed Power 4036M Main Bearing
Sealed Power Main Bearing is a hardware bearing designed for your automobile's main shaft bearings. This product comes in a package size of 6.16L x 3.73W x 1.76H inches and weighs 1.24 pounds. With a quantity of 1 in each package, the Sealed Power Main Bearing is a reliable and convenient option for your vehicle's maintenance needs. The bearing is designed to reduce friction and wear, providing a smooth and efficient operation for your engine. The compact size and weight of the package make it easy to store and transport. The Sealed Power Main Bearing is a high-quality product that will help your engine run smoothly and efficiently.
Frequently Asked Questions (FAQs)
1. What is the main shaft in a wind turbine?
A wind turbine's main shaft arrangement is part of a geared, hybrid, or direct drive design. Whatever the arrangement, it must withstand axial and radial loads and operate under harsh, continuously changing conditions. Wind turbine main shaft bearings spin at relatively low speeds of around 10 rpm.
2. How do you check input shaft bearings?
When your vehicle is in neutral, you should only hear the hum of the engine. But, if you hear strange noises before you put the car in gear, it is most likely a sign of a faulty input shaft bearing. The tone and pitch of this noise will vary based on the speed that the engine is running at.
During our main shaft bearing research, we found 7 main shaft bearing products and shortlisted 5 quality products. We collected and analyzed 2,022 customer reviews through our big data system to write the main shaft bearings list. We found that most customers choose main shaft bearings with an average price of $28.35.
The main shaft bearings are available for purchase. We have researched hundreds of brands and picked the top brands of main shaft bearings, including ACDelco, Febi Bilstein, Sealed Power. The seller of top 1 product has received honest feedback from 386 consumers with an average rating of 4.7.

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.