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This section provides an overview for adapter nuts as well as their applications and principles. Also, please take a look at the list of 11 adapter nut manufacturers and their company rankings. Here are the top-ranked adapter nut companies as of February, 2025: 1.MurCal, 2.G.W. Kent, Inc., 3.SIGMAKOKI CO.,LTD..
Table of Contents
Adapter nuts are specialized components used in conjunction with adapter sleeves and lock washers, collectively known as adapters. These components are essential in the installation and maintenance of spherical ball bearings and spherical roller bearings, particularly those with tapered bores in their inner rings. Adapter nuts facilitate easy mounting, dismounting, and securing of these bearings.
These nuts, often synonymous with bearing nuts and lock nuts, feature a female thread on the inside diameter. The outside diameter is designed with 4 to 8 notches evenly spaced around the circumference, allowing for the use of specialized tools for tightening and loosening.
Adapter nuts are primarily used for securing the inner rings of spherical ball bearings and spherical roller bearings onto shafts. They are crucial in ensuring these bearings are fixed in position, which is particularly important in applications such as angular contact ball bearings. Here, adapter nuts, along with lock washers, are used to firmly attach the bearings to the shaft. Tightening and adjustments are typically done using a wrench with a special hook or a socket tool designed to fit the nut's notches.
The Adapter Nut functions by securing the bearing to the shaft. The adapter itself has a tapered outer diameter, with a smaller hole at the side where the nut is installed and a larger hole on the opposite side. The bearing's inner diameter also has a corresponding tapered hole. When the Adapter Nut is turned and tightened, it pushes the bearing's inner ring inward, tightening the fit between the adapter's outer diameter and the bearing's inner diameter, thus securing the bearing in place. A lock washer, positioned between the adapter nut and bearing inner ring, has outer teeth that align with the notches in the adapter nut. These teeth are bent into the notches to prevent the bearing from rotating or loosening.
*Including some distributors, etc.
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3M Company was founded in 1902 and is headquartered in St. Paul, Minnesota. 3M provides diversified technology services globally. 3M operates through four segments: Safety and Industrial, Transportation and Electronics, Health Care, and Consumer. The Safety and Industrial segment offerings include industrial abrasives, masking, and natural and color-coated mineral granules for shingles. The Transportation and Electronics segment offerings include ceramic solutions, light management films, and electronics assembly solutions. The Healthcare segment offerings include wound care, dentistry and orthodontia solutions, and filtration and purification systems. The Consumer segment offerings include consumer bandages, picture hanging, and stationery products.
Weiler Abrasives, Inc, founded in Pforzheim, Germany., in 1879 is a manufacturer of coated abrasives, bonded abrasives and power brushes. The company's product portfolio includes Cutting Wheels, Grinding Wheels, Artificial Abrasives, Technical Fabrics and Superabrasives. Their products are used in industries such as Food and Beverage, Pharmaceutical and Biotechnology, Chemical and Petrochemical, Environmental Testing and healthcare. In 1886 the company moved its production site to its current location in Maribor in Slovenia.
SIGMAKOKI Co., Ltd. (SK) is a Japanese manufacturer and distributor of optical technology products founded in 1977. Headquartered in Tokyo, the company offers a wide range of optical equipment including optics and optical coatings, laser and optical application system components, objective lenses, and biomedical products such as core units for microscopy. It primarily serves research institutes, as well as clients in the aerospace, semiconductor, and medical device manufacturing sectors. SK products have various applications including in laser processing, R&D, spectroscopic measurement, and optical communication.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | MurCal |
25.0%
|
| 2 | G.W. Kent, Inc. |
25.0%
|
| 3 | SIGMAKOKI CO.,LTD. |
25.0%
|
| 4 | 3M |
25.0%
|
Derivation Method
The ranking is calculated based on the click share within the adapter nut page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
4 | 44.4% |
|
Japan
|
2 | 22.2% |
United Kingdom
|
2 | 22.2% |
|
Slovenia
|
1 | 11.1% |
139 products found - Page 2
139 products - Page 2
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