What’s damping torque?

Damping Torque

Damping Torque is an instantaneous force that rotates an object around its rotary shaft(axis). Torque expresses the necessary force when moving an object. For example, when riding a bicycle, torque is the pushing force of the pedal. If you are pushing the pedal strongly, then the torque is greater.

The greater the force required to support the lid, and the greater the length of the object, the greater the objects torque will be.

Example calculation in case of toilet lid

Weight: 1kgf(=9.8N)

Length: 0.4m(gravity point=0.4m/2=0.2m)

↓

9.8N×0.2m=1.96N・m

↓

The following TOK rotary dampers would be suitable!

　　TD69　              TD99     　        TD100    　　　     TD112

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Written by Mayu

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Damping torque generation method

There are mainly 3 ways to generate torque of dampers.

1.       Pressure: it moves like syringe

2.       Sliding Resistance: friction movement

3.       Shear Resistance: it moves like scissors

They are used for the following types of dampers.

1.       Pressure → Partial rotation and Continuous rotation angle damper

2.       Sliding Resistance → Friction damper

3.       Shear Resistance → Partial rotation angle damper

Here is the inside of housing↓

Partial rotation angle damper

Continuous rotation angle damper

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TOK will provide ONLY subscribers with valuable technical information.

The newsletter will be delivered about once per month, If you would like to receive the newsletter from us, you can subscribe via our contact form.

Written by Mayu

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What’s silicone oil?

TOK rotary dampers are mostly filled with silicone oil.

Silicone oil is colorless liquid and the most versatile product among silicone products. The silicone oil has beneficial effect in heat resistance, cold resistance and electrical quality. It also has different interface properties, and has excellent characteristics not found in mineral oil, animal and vegetable oils and various synthetic oils. In addition, silicone oil has wide range of viscosity.

Therefore, it is used in a wide range of fields such as electric equipment, lubricating, heat and cold resistance, water resistance, paint resin, and fiber oil.

Silicone Oil

Damper with Silicone Oil

Using various viscosity oils, TOK can provide you with multiple torques of dampers as the customer's request.

TOK Newsletter

TOK will provide ONLY subscribers with valuable technical information.

The newsletter will be delivered about once per month, If you would like to receive the newsletter from us, you can subscribe via our contact form.

Written by Mayu

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What's rotary damper?

Rotary damper is the mechanical parts to buffer the impact of the lid closing / opening. Rotary damper is effective for consistent motion, soft closing / opening, improved safety, and makes a product luxurious.

We manufacture oil filled style rotary dampers and there are 2 types of rotary dampers: partial rotation angle type and continuous rotation angle type. Partial angled rotary damper has limited operation angle. e.g. 110° and 180°, etc. On the other hand, continuous rotation angle rotary damper rotates 360° without limit.
　　　　　　　　　　　

Partial rotation angle damper

Continuous rotation angle damper

Our rotary dampers are used in multiple applications such as kitchen, bath, furniture, automotive, and more.

The rotary damper is very important for our quality of life!

Application examples:

Sliding Screen Doors

Garbage Can

Blinds

Wall Table

Console Box

Want to know how to install rotary dampers?

You can learn how to install our products on multiple applications.

>>Learn more

TOK Newsletter

TOK will provide ONLY subscribers with valuable technical information.

The newsletter will be delivered about once per month, If you would like to receive the newsletter from us, you can subscribe via our contact form.

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TOK headquarter's office relocation

We are pleased to announce that effective from 20^th March 2018, TOK headquarters in Japan will be relocated to new building as follows address, the main TEL and FAX numbers remain unchanged.

TOK headquarters new building location at:

TOK, Inc.

1-17-12 Azusawa, Itabashi
Tokyo, 174-8501 JAPAN

TEL: +81-3-3969-1584

FAX: +81-3-3969-8819

Thank you very much for your kind attention and continuous support to TOK group.

Written by Mayu

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