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

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

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

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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.

In the 1970s, NSK established a manufacturing subsidiary outside the city of Sao Paolo in Brazil, followed by other new manufacturing subsidiaries in North America, in the United Kingdom and Asia. In the 1990s, NSK acquired UPI, the largest bearing manufacturer in the United Kingdom, known for its RHP brand. Expanding production and sales locations in all European markets resulted in a stronger market presence for NSK in Europe.

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.

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

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.

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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.

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

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.

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.

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

Our Lubrication analysis service will detect any lubricant changes that can negatively affect the machine's service life or performance. Various parameters are ...

Starting in the mid-1990s, NSK rapidly expanded its operations into markets in Asia. Particularly in fast growing markets such as China, NSK is continuously strengthening its corporate structure to carry out research and development, sales and technical services locally.

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

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

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NSK has 64 production site in 13 countries, including Japan, UK, Germany, Poland, USA, Mexico, Brazil, Indonesia, Thailand, Malaysia, India, China, South Korea.

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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.

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NSK Business Division Headquarters, Functional Division Headquarters and Regional Headquarters work in close collaboration with all locations to rapidly meet the diverse needs of our global customers.

How Can Bearing Repair Save Money and Time for Me? Repaired Bearings Good as New — Really? How Can I Maximize the Value of Bearing Repair Services? Why Timken for Bearing Repair? How Do I Know When a Bearing Needs Repair? What Type of Bearing is Repairable? What If the Bearing Was Made by Another Brand? What Repair Methods Does Timken Use What Are the Environmental Benefits of Bearing Repair? The Value of Remanufacturing Complete Drivetrain Services

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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.

Timken Power Systems , Philadelphia Gear, Western Gear, WesTech Gear, Standard Machine, Hamilton Gear, Smith Services, 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.

Since the beginning of the 1960s, following the establishment of its first overseas sales office in Ann Arbor, Michigan in the United States, NSK has continued to set up business locations overseas and has continuously strengthened its global presence.

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.

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.

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.

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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.

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

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.

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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.

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.

NSK bearings have contributed greatly to the growth of many industries and to the advancement of mechanical technology. Now, the company has the largest share of the bearings market in Japan and is one of the largest bearing suppliers in the world.

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.

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

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

Common ball bearing designs include angular contact, axial, deep-groove, and preloaded pairs. The balls in ball bearings can also be configured in various ways.

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

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.

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.

Please refer to the picture above. Now NSK's global network span the Americas, Europe, Asia and Japan. NSK operates 59 locations in Japan and a total of 208 production sites, sales locations, representative offices, and technical service locations in 30 countries and regions around the world.

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.

NSK was founded in 1916 and produced the first ball bearings made in Japan. Since then, the company has spearheaded the development of bearings in Japan. NSK now offers a full range of bearings and sells them worldwide.

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.