Downhole drilling motor bearings

Whether you’re drilling for oil or gas, the bearings in a mud motor at the end of a drill string have a direct impact on productivity and reliability.These mud motor bearings have to endure extreme operating conditions. In addition to severe axial and shock loads, these bearings are “lubricated” with highly abrasive mud, which for a bearing is the definition of an extreme operating condition.

How the new bearing works ?

The typical mud motor bearing contains between 8 and 12 rows for design optimization. When the bearing is new, the majority of the load is accommodated by the first four or five rows. As each row starts to wear, the load is shifted to the next row and the next until all the rows are worn equally. Then, the load is shifted back to the first row and the process is repeated. This unique Monton design enables the bearing to last significantly longer than previous bearing designs.

About the redesign process

To significantly improve bearing performance and reliability,Monton engineers used proprietary Monton design and simulation tools to

• accurately define the behaviour of a bearing stack

• redesign the bearing to minimize stresses and optimise load carrying capacity

• test new designs and materials. With the Monton virtual test rig, engineers were able to identify and correct the problem of cracked rings and sheared balls – two common problems with these bearing

Product features

• Special steel for all bearing components

• Full complement bearing

• Precision matched rings

• Unique bearing design to support heavy axial drilling loads

Customer benefits

• Improved wear-resistance

• Increased load carrying capacity

• Optimized load distribution

• Increased robustness

• Improved reliability

• Customized design

Product Description

The bearings in a mud motor at the end of a drill string would place a huge influence on productivity and reliability in terms of oil
drilling or gas drilling.The working condition of these mud motor bearings are extremely harsh: the bearings bear heavy axial and
shock loads, and they are also exposedwith highly abrasive mud.

• Special steel for all bearing components
• Full complement bearing
• Precision matched rings
• Unique bearing design to support heavy
• axial drilling loads

Our service
1. Service on custom bearing
We are non-standard bearing manufacturing expert. We have a professional team engaged in the design, development and manufacture special bearing to meet your special requirements.
2. Service on bearing testing
We are sincerely to provide you with the following services on bearing testing:
(1) Research and development of all types of bearing testing machines, such as the durability test, life test, performance test and special test of special bearings.
(2) The planning construction project of bearing laboratory and the skill training of test personnel.
(3) Proving all types of bearing testing machines and the transfer of bearing testing technical achievement.
(4) Accepting the research and establishment of testing technology, regulations and standards of all special bearings.
(5) Accepting the development of all kinds of non-standard equipments and control system, and accepting all kinds of software programming.
3. Service on bearing inspection
We are sincerely to provide you with the following services on bearing inspection:
(1) Reference transfer, verification and repair of measuring devices, bearing instruments calibration, position measuring, components inspection, samples surveying and mapping.
(2) Quality and index inspections of heat treatment, physical and chemical indicators inspections of materials, grinding index inspection, pressure inspection, bearing failure and waste bearing analysis.
(3) Precision grade inspection for different types of bearings, rolling elements and bearing accessories inspection, vibration and clearance master transfer, bearing inspecting instruments calibration.
4. Service on spindle rebuilding
Our main business on spindle rebuilding: Change bearings, shaft, stator and etc. Measure dynamic balance.
5. Service on metal material inspection
We undertake many physical and chemical inspections, including heat treated structure evaluation of bearing parts, the inspections on the depth and hardness of surface deteriorative layer, magnetic particle inspection, retained austenite inspection, contact fatigue life test, etc.
6. Service on non-metallic products
Monton is engaged in researching the application of bearing antirust lubricating technology for a long time, and has developed various relevant oil and grease products.
We undertake the standards establishment and product inspection for non-metallic products, such as anti-rust products, lubricants, plastic cage, seals, etc.