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This section provides an overview for torque keepers as well as their applications and principles. Also, please take a look at the list of 5 torque keeper manufacturers and their company rankings. Here are the top-ranked torque keeper companies as of December, 2024: 1.Tsubakimoto Chain Co., 2.Sankyo Seisakusho.
Table of Contents
Torque limiters are devices that protect equipment from overload and contribute to improved productivity.
They are mainly used in multilevel parking lot turntables, pallet cart conveyors, and various types of training machines.
Torque limiters are used for three main purposes: accumulation, breaking, and dragging.
Accumulation stops the driven side in position using a stopper action. An example of a practical application is a conveyor that utilizes the stopper action.
Braking stops continuously driven equipment by braking action. An example of a practical application is a turntable in a multilevel parking garage that utilizes braking.
Dragging applies a steady load to a device using a slipping action. An example of a practical application is a training machine that utilizes the slipping action.
Torque limiters are devices that maintain a constant torque. The basic configuration of the device is generally made up of seven mechanical parts: hub, plain bearing, flange, plate, disc spring, washer, and adjusting nut.
The device transmits drive to an external drive up to a specified torque, but slips and stops transmitting drive when the specified torque is exceeded. Torque adjustment is determined by loosening or tightening an adjusting bolt attached to the far end of the device. The torque setting range varies from 10 to 30 Nm for small products and from 100 to 600 Nm for large products.
1. Compact and Lightweight
The device consists of only a few mechanical parts, making it compact and lightweight.
2. Built to Last
The use of chemical fiber for the plate extends the life of the device.
3. Low-Cost and Lightweight
The use of aluminum for the flange enables low-cost and lightweight equipment.
4. Easy Torque Adjustment
Torque adjustment is easy by simply turning the adjustment bolt according to the torque scale.
*Including some distributors, etc.
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Founded in 1938, Sankyo Seisakusho Co., Ltd. primarily serves the automobile, medical, and aerospace industries. Sankyo Seisakusho’s mane products include precision reducing gears, roller drives, intermittent indexing devices, indexing drives, feeders, motion control, and machine tool related equipment. Sankyo Seisakusho has a global reach with both factories and sales offices in the United States.
Miki Pulley Co., Ltd., founded in 1939, is a manufacturer and provider of solutions for power transmission and control problems, headquartered in Kawasaki City, Japan. They manufacture various products essential for all industries, including couplings for high-precision power transmission, electromagnetic clutches and brakes for power transmission when energized, and speed changers and reducers for controlling the speed of machinery. They also offer inverters, linear shaft drives, rotation speed indicators, torque limiters, and ROSTA rubber springs.
Tsubakimoto Chain Co., established in 1941 and headquartered in Osaka, Japan, is a manufacturer of chains for power transmission, transportation use, and variable speed reducers. The company offers a wide range of products, including conveyor chains, lifters, overload protectors, bulk handling systems, and more. It also offers roller chains, timing chains, linear actuators, and metalworking chip handling. Its product is designed to be resistant to particulate abrasion. The company has been certified as an Eco-First Company by the Ministry of the Environment. It serves industries such as steel, automotive, machine tools, food, and environmental sanitation equipment.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Tsubakimoto Chain Co. |
50.0%
|
| 2 | Sankyo Seisakusho |
50.0%
|
Derivation Method
The ranking is calculated based on the click share within the torque keeper 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.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
5 | 100.0% |
25 products found
25 products
Nippon Sohan Co., Ltd.
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Permatorque" is a torque control device that uses the flow of magnetic lines of force. Features of Permatorque ■Non-contact structure ・Long life ...
Symphonia Microtech Co., Ltd.
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Standard Response
Introducing light-load braking/holding brakes. Can also be used as overload protection (slip mechanism). Features ■Compact brake with clutch size ...
Sumitomo Heavy Industries, Ltd.
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■Product features ・Compact: The cyclo reducer has a compact design with a large reduction ratio, high efficiency, and small number of parts, and a...
Symphonia Microtech Co., Ltd.
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Standard Response
Capable of transmitting and interrupting power (overload protection) between two rotating axes of machinery and equipment. Features ■Dry multi-pla...
TOK Co., Ltd.
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Very Fast Response
■Features ・19.6 mN･m (200 gf･cm) ・Various torque selections ・Small size ·lightweight ・Price competitiveness
Sugatsune Industries Co., Ltd.
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Standard Response
■Features - Protects the power source by idling when overloaded. -Compact but capable of high torque. ・The lineup ranges from 0.1 to 7.5N・m. Thi...
Murakami Giken Sangyo Co., Ltd.
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■Device overview You can clearly see the state of the load applied to the tool and grindstone at a glance. It can be used as a device to prevent th...
Technodynamics Co., Ltd.
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Torque Shield T series is a unit that cuts off torque when excessive torque is generated and protects peripheral equipment from damage. Can be atta...
10 models listed
MIKI PULLEY CO., LTD.
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Overload is reliably detected, and when the drive key is removed from the groove, input and output are separated, and when the overload is removed,...
2 models listed
KUKEN Co., Ltd.
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Kuken's pneumatic controller (KAC-2000) is a controller that can be used with the general impact wrenches and oil pulse wrenches you are currently ...
Tomita Co., Ltd.
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Standard Response
■Ortring House A specialized manufacturer of clutches and brakes founded in 1898. We manufacture a full line of electromagnetic, pneumatic, hydraul...
4 models listed
