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This section provides an overview for retainers as well as their applications and principles. Also, please take a look at the list of 91 retainer manufacturers and their company rankings.
Table of Contents
A retainer, used in bearings, plays a crucial role in separating the balls within the bearing, enabling them to rotate at high speeds.
The term "retainer" varies in its application across different industries. In bearings, a retainer, also known as a mechanical friction retainer, is designed to reduce the friction between balls, facilitating smoother and faster rotation.
Retainers are essential in bearings, creating a necessary space between the outer and inner rings. This spacing prevents the balls from contacting adjacent ones. Two common types of retainers are steel retainers and resin retainers. Selecting the right material is crucial and depends on the manufacturing method and the specific operating environment, requiring consultation with the bearing manufacturer.
Retainers significantly influence the performance of bearings:
In the absence of retainers, bearings experience increased friction due to ball-to-ball contact. This leads to energy loss, higher noise levels, and accelerated wear. As a result, bearings without retainers are typically used in applications involving low-speed rotation.
Retainers prevent direct contact between balls, thereby reducing wear, energy loss, and noise. This makes high-speed rotation feasible.
Retainers are categorized based on bearing types: ball type and roller type. Ball-type bearings use retainers, while roller-type bearings use cages.
While retainers are commonly associated with professional equipment, they are also used in everyday applications like bicycle bearings to hold the balls in place. Bicycles, especially around cranks and handlebars, often employ ball-type bearings and retainers. These parts require careful maintenance, sometimes necessitating professional repair services.
Retainer damage can result from excessive vibration, shock, or moment loads that tilt the rotating shaft. Adequate lubrication with the right lubricant is essential for smooth operation. Installation errors, such as misalignment, also contribute to damage and should be minimized. Additionally, foreign objects or installation scratches can cause damage, as retainers are not designed to withstand significant external forces or contact with other parts.
*Including some distributors, etc.
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Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Pacamor Kubar Bearings |
33.3%
|
| 2 | Wesco Industrial Products, LLC. |
33.3%
|
| 3 | mbo Osswald GmbH & Co KG |
33.3%
|
Derivation Method
The ranking is calculated based on the click share within the retainer page as of December 2024. 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
|
62 | 93.9% |
Switzerland
|
1 | 1.5% |
Germany
|
1 | 1.5% |
China
|
1 | 1.5% |
Canada
|
1 | 1.5% |
21 products are listed.
Hayashi Co., Ltd.
20+ people viewing
■Features ・Improved transparent pocket: It is now possible to significantly reduce the amount of rainwater entering the pocket. ・Installing eyele...
TAKAI SEIKI CO., LTD
40+ people viewing
Last viewed: 6時間前
■Features It is used in bearings for home appliances such as air conditioners, vacuum cleaners, and dryers, AV equipment, office equipment, and ele...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 12時間前
■Features Used in bearings for standard motors, pumps, washing machines, large air conditioners, motorcycles, etc. ■Miniature bearing Typically, b...
TAKAI SEIKI CO., LTD
20+ people viewing
■Features It has corrosion resistance, magnetic resistance, heat resistance, chemical resistance, and is used in special environments such as high ...
TAKAI SEIKI CO., LTD
30+ people viewing
■Features A corrugated retainer with claws that is widely used in ball bearings.
TAKAI SEIKI CO., LTD
40+ people viewing
■Features Bearing cage for anti-magnetic applications by using stainless steel material.
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 16時間前
■Features Used in bearings for cooling fan motors, etc.
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 20時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
50+ people viewing
Last viewed: 21分前
■Features Used in thin wall bearings such as office machines and heat rollers.
TAKAI SEIKI CO., LTD
40+ people viewing
Last viewed: 9時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 9時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 13時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 9時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 2時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
30+ people viewing
Last viewed: 9時間前
■Cage (retainer) The cage is built into the gap between the inner and outer rings, and its role is to keep the balls at the same distance to preven...
TAKAI SEIKI CO., LTD
40+ people viewing
■Features Used in bearings for cooling fan motors, small motors, etc. ■Miniature bearing Typically, bearings with a nominal bearing outer diameter...
Hoshimoto
40+ people viewing
Last viewed: 9時間前
■Features ・Smooth operation due to metal retainer. - The inner rail can be pulled out by 3/4 of its total length with a single slide. ■Material I...
Kyodo International, Inc.
40+ people viewing
■CMP retainer ring: High functionality (life span, uniformity/uniformity improved model) Major consumable parts have been upgraded from the viewpoi...
Taisei Co., Ltd.
120+ people viewing
Last viewed: 13時間前
■Advantages of using 3BM®︎ retainer ring 3BM retainer ring outperforms PPS in 4 categories. 1.Abrasion resistance 2.Scratch amount 3.Environmental ...
