Timken Power Systems bearing repair services

How Can Bearing Repair Save Money and Time for Me?

A bearing remanufactured by Timken can cost 20 to 60 percent less than the cost of a new bearing.

When compared to manufacturing new, lead-times are significantly reduced with bearing repair. Shorter lead times can increase uptime.

image at right: If a new bearing costs $20,000 then the cost of a bearing remanufactured by Timken could be $8,000 – a savings of $12,000, or 60 percent. 

How Can Bearing Repair Save Money and Time for Me?
Repaired Bearings Before and After

Repaired Bearings Good as New – Really?

Absolutely. Depending on the type of repair, research* has shown it is possible to restore the full, useful life of your bearings. In many cases, a bearing is repairable multiple times – extending its service life and improving your overall cost of operation – without sacrificing quality.

image at left: According to “A Finite Element Model for Rolling Contact Fatigue of Refurbished Bearings” published in Tribology International, Vol. 85, pages 1-9.  

How Can I Maximize the Value of Bearing Repair Services?

You can significantly reduce your overall cost of operation by building a critical spares inventory. With new bearings in operation, send the out-of-service bearings to Timken for repair.

When it is time to replace bearings, you can install the remanufactured part from your inventory, avoiding stock-outs and costly downtime.

As this cycle repeats, you continue to lower your costs and reduce operational downtime.

Repair, Repeat, Save

With each repair cycle, you can save 20 to 60 percent of the cost of replacing the bearing. Repair the same bearing twice, and you could cover the cost of a new bearing.  

Bearing Repair

Why Timken for Bearing Repair?

Timken has a dedicated team of bearing repair experts. This team employs strict Timken standards and quality control in the remanufacturing process. In addition, the repaired bearing is backed by an industry-leading warranty.

While some bearing repair methods consist of just a cosmetic honing, we take the extra steps to help extend the life of your bearing.

 

How Do I Know When a Bearing Needs Repair?

Timken repair experts can help you to identify the type of bearing damage, determine the root-cause and recommend the best repair method.

Signs or reasons that a bearing may need repair:

  • During routine maintenance the bearing is deemed “ready for replacement”
  • Exceeds an operating temperature of 200°F (93°C)
  • Exposure to excessive vibration
  • Experiences a sudden drop or gain in lubrication
  • Emits excessive noise
  • Loses bearing seal integrity  
Timken repair experts can help you to identify the type of bearing damage, determine the root-cause and recommend the best repair method.
What Type of Bearing is Repairable?

What Type of Bearing is Repairable? What If the Bearing Was Made by Another Brand?

Regardless of the original manufacturer, we can repair most types of bearings including:

  • Ball bearings
  • Class 3 precision bearings (all types)
  • Cross roller bearings
  • Cylindrical roller bearings
  • Spherical roller bearings
  • Tapered roller bearings
  • Thrust bearings (all types)
  • Triple ring bearings

What Size Bearing is Repairable?

Generally suited for bearings with a 12 in. interior diameter (I.D.) and larger, our repair methods are comprehensive, methodical and extensive – often using grinding operations to remove damage below the surface and restore bearing geometry.

Sometimes smaller bearings are good candidates for repair, depending on the type of repair needed. 

What Repair Methods Does Timken Use?

Our repair methods are unique in the industry – with extraordinary attention to detail.

Recertification (Type 1): Bearing assemblies cleaned, examined, measured for verification of internal clearances, inspected, preserved and packaged. This process is used to recertify a bearing for service – generally applying to an unused product with an outdated shelf life.

Reconditioning (Type 2): Bearing assemblies cleaned, examined, polished, honed or tumbled to remove minor surface defects (primarily rust or corrosion), measured for verification of internal clearances, inspected, preserved and packaged.

Remanufacturing (Type 3): Bearing assemblies cleaned, examined, raceways reground, new roller sets and major components manufactured and replaced as required, internal clearances reset, inspected, preserved and packaged.

Regrinding raceways requires the manufacture of oversized rollers to compensate for the removed material and to maintain bearing geometry and clearance where radial internal clearance is critical. When lateral clearance is critical, oversized rollers, new spacers or additional shims are provided.

Reclamation: Typically used for bearings with a 3 in. - 8 in. I.D. (larger, economical quantities required). Bearing assemblies cleaned, polished using our proprietary vibratory process, inspected, preserved and packaged.

Modifications: We can add special features, including advanced coatings, to existing or new bearing assemblies to enhance performance, retrofit to special applications or upgrade to our most recent product designs.

Upgrade with ES Coatings: This advanced coating technology helps prevent bearings from peeling in areas where roller skidding occurs, typically under low load and speed conditions. Skidding breaks through the lubricant film of a bearing, leading to premature damage to rollers and races. This protection can lead to greater uptime and performance.

What Repair Methods Does Timken Use?
As a standard practice, we replace or remanufacture rolling elements depending on their condition.

What Are the Standards Timken Uses?

As a standard practice, we replace or remanufacture rolling elements depending on their condition.

New rolling elements meet or exceed manufacturer’s requirements for material, geometry and surface finish. Each rolling element is 100% visually and dimensionally inspected and tested in accordance with all applicable OEM specifications.

Every bearing, upon completion of repairs, undergoes extensive visual and dimensional inspection in accordance with Timken-approved procedures, and OEM acceptance criteria (where available). 

What Are the Environmental Benefits of Bearing Repair?

Bearing repair is a green maintenance procedure, requiring minimal energy input and significantly reducing raw material consumption when compared to manufacturing new bearings.

The Value of Remanufacturing

Timken’s remanufacturing program is designed to provide “like new” bearings faster, and at a lower cost than newly manufactured bearings. By using this proprietary service, customers may increase bearing life up to four times, save up to 50% over the cost of new, and ensure availability in a fraction of the time.

Additionally, we can remanufacture any bearing type or brand, certify them to OEM standards – and we back that promise with a “same as new” one-year warranty. Any heavy industrial application, from paper, metals and mining, to power-generation and cement are all candidates for this service.

What type of bearing damage can be repaired? The following guide outlines common types of bearing damage and Timken repair solutions.

The Value of Remanufacturing
Spalling

Spalling

Also known as flaking, fine grain or course grain spalling. Damage appears on the bearing raceway or rolling element as metal flakes or scale-like particles.

Repair Solution: Replace Component
Wear

Wear

Occurs when the contact surface has been degraded and worn away by mechanical action while the bearing is in use.

Repair Solution: Regrind
Fretting

Fretting

Also known as friction oxidation. Typically occurs on the bore, O.D. and face of the bearing race due to minute movement of these surfaces and the shaft or housing. Red or black oxide of iron is usually evident under close fit conditions.

Repair Solution: Polish
Corrosion/Etching

Corrosion and Etching

Usually caused by moisture or water contamination, this chemical action is in the form of rust, attacking bearing component surfaces.

Repair Solution: Regrind
Heat Checks

Heat Checks

Surface cracks caused by heat from sliding contact, usually formed in the direction of motion.

Repair Solution: Replace Component
Scuffing

Scuffing

Also known as smearing, scoring or galling. Damage is caused by metalto- metal contact, resulting in the removal and transfer of metal from one bearing component to another.

Repair Solution: Clean or Polish
Debris Denting

Debris Denting

Localized surface depressions that are caused by debris or foreign materials that travel within the lubricant, through the bearing, and dent internal surfaces

Repair Solution: Regrind
Crack/Fracture

Cracks and Fractures

Appears as a significant visible surface crack that is usually caused by improper handling or unusual operating conditions.

Repair Solution: Replace Component
Staining

Staining

Appears as surface discoloration without pitting, similar to oil oxidation.

Repair Solution: Clean or Polish
Brinelling

Brinelling

A permanent deformation of a bearing surface at the roller and race-way contact areas caused by excessive load or impact.

Repair Solution: Regrind

On-Time. On-Spec. On-Budget. 100% TSB.

Timken Power Systems

Our Guiding Principles

We believe in:

  • Keeping our promises to customers and each other: 100% TSB
  • Treating people with respect
  • "Run to the problem" mentality
  • Continuous improvement through application of lean principles
  • We are one team

Contact Us

Phone: 877.484.6536
Email: info@timkenpowersystems.com

Timken Power Systems, Philadelphia Gear, Western Gear, WesTech Gear, Standard Machine, Hamilton Gear, Smith Services, Wazee Electric, H&N Electric, H&N Wind, Schulz Electric, Stultz Electric, Maine Industrial Repair, and Timken Bearing Repair are all registered or unregistered trademarks of The Timken Company or its affiliates.

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