NSK

Introduction

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. 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.

NSK has used its expertise in precision machining technology, refined through years of bearing manufacturing, to diversify into:

  • automotive products
  • precision machinery and parts
  • mechatronic products

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.

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.

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.

NSK intends to step up its efforts on a company-wide basis to ensure that the business activities of the entire company adhere strictly to applicable laws and regulations, and that they are conducted based on its social responsibilities as a corporation.

DEEP GROOVE BALL BEARINGS

Ball bearings

NSK manufacture a full range of deep groove ball bearings. These bearings are the most common type and are used in a wide variety of applications.

ANGULAR CONTACT BALL BEARINGS

Ball bearings

The NSK range of angular contact ball bearings has been designed to meet the increasingly demanding requirements of original equipment manufacturers. These bearings have a contact angle so that they can sustain significant axial loads in one direction together with radial loads. Furthermore, since an axial component is generated when a radial load is applied, these bearings are generally used in pairs, triplex sets, quadruplex sets, or multiplex sets. NSK offers one of the most comprehensive ranges of angular contact ball bearings available.

SELF-ALIGNING BALL BEARINGS

Ball bearings

This type of ball bearing is recommended when alignment of the shaft and housing is difficult and the shaft may flex. The outer ring has a spherical raceway and its center of curvature coincides with that of the bearing; therefore, the axis of the inner ring, balls and cage can deflect to some extent around the bearing center. Pressed steel cages are usually used. Since the contact angle is small, the axial load capacity is low. The permissible dynamic misalignment is approximately 0.07 to 0.12 radian (4 to 7 degrees) under normal loads.

THRUST BALL BEARINGS

Ball bearings

Thrust ball bearings are classified into those with flat seats or aligning seats depending on the shape of the outer ring seat (housing washer). They can sustain axial loads but no radial loads. For Single-Direction Thrust Ball Bearings, pressed steel cages and machined brass cages are usually used The cages in Double- Direction Thrust Ball Bearings are the same as those in Single-Direction Thrust Ball Bearings of the same diameter series.

N SERIES THIN-SECTION BALL BEARINGS METRIC AND INCH DESIGNS

Ball bearings

Extremely thin-section ball bearings and roller bearings contributing to downsizing, weight saving, and reduction of torque loss of robots, construction equipments, and industrial machinery.

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