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Electromagnetic clutches and brakes -Safety Precautions

When using this product, we ask you to carefully study the Operation Manual and other technical materials and then exercise due caution in using this product properly.
This document ranks safety precautions into two types: Danger and Caution.


DangerDanger
Incorrect use could result in death or serious injury to the user.
CautionCaution
Incorrect use could result in injury to the user or property damage.

Using this product in nuclear power, aerospace, medical, transportation, safety device, or other applications in which product breakdown or malfunction could lead to death or bodily harm requires case-by-case investigation. Consult your sales representative.

Although all possible control measures are taken to ensure quality, unexpected breakdowns can cause clutches to stick, producing continuous rotation, and brakes to fail, producing coasting. To provide for such eventualities, take sufficient safety measures on the machinery. In particular, provide double and triple safety measures for applications using negative-actuated holding brakes. Store the Operation Manual in a safe place readily accessible for perusal, and be sure to provide it to the end user.


Target model
All models
DangerDanger
Do not use this product in an atmosphere where there is a risk of ignition or explosion.
Slipping during starting and braking can generate sparks. Never use this product in an atmosphere containing grease or combustible gases, risking ignition or explosion. Hermetically seal off the body if there is cloth or other flammable material in the vicinity. Note, however, that such sealing reduces the allowable engaging energy.
Target model
All models
DangerDanger
Always install safety covers.
This product contains a rotating body, so touching it risks hand or finger injury. Always install well-ventilated safety covers to prevent body contact. Also provide a safety mechanism for bringing the rotating body to an emergency stop when such covers are opened.
Target model
Spring actuated type electromagnetic brake (Type:SB)
DangerDanger
This product cannot be used for braking.
This negative-actuated brake is designed solely for holding and emergency stop applications. Extended use for braking degrades its functionality over a short period, rendering it incapable of releasing. Using it in that state produces brake burnout and loss of braking force, allowing machinery to run out of control.
Target model
All models
DangerDanger
Please do not rev up to exceed the allowable rotating speed.
 
Operation at allowable rotating speed or more results in significantly dangerous situation that increases vibration which, in certain cases, causes breaking or scattering. Please make sure to operate at rotating speed within maximum allowable limit.
Target model
Single-disc type electromagnetic clutch / brake and multi-disc electromagnetic clutch / brake
DangerDanger
Please operate not to exceed allowable engaging (braking) energy rate.
Operation at allowable engaging (braking) energy rate or more may result in increased heat generation and red heat on active surface possibly causing fire. Please operate at engaging (braking) energy rate within allowable limit, or otherwise the specified performance would not be achieved.
Target model
All models
DangerDanger
Please make sure a complete torque tightening and bolts locking is performed.
 
Depending on bolts locking conditions, there may be a risk of significantly dangerous situation such as shearing, breaking, etc. Please make sure to use the specified locking torque and bolt materials and to take perfect measures for locking by an adhesive, spring washers, etc.
Target model
All models
DangerDanger
Please use cables of size suitable for generator capacity.
Use of cables with less current capacity may result in risk of electric shock, leaks caused by melted insulating coating, insulation failure, as well as cause of fire.
Target model
All models
DangerDanger
Please design so that power supply section (terminal block, slip ring, brush holder, etc.) shall be provided with cover.
Touching by hand may cause risk of electric shock. Please include in the design to provide cover to prevent from direct touch during, operation and also such events as maintenance, inspection, etc.
Target model
All models
DangerDanger
Make sure to be conscious of surrounding environment.
 
Please operate in environment free of dust, moisture or oil content (in case of dry type). Intervention by these contents results in injury caused by coasting of machines or machines running out of control due to inoperability or deterioration.
Target model
Single-disc type electromagnetic clutch / brake and multi-disc type electromagnetic clutch / brake
CautionCaution
Please seal with cover, etc. to prevent from flying friction debris.
 
The friction materials used in this product include non-asbestos material (phenol resin), etc. Please seal with cover, etc. to prevent from flying friction debris. Diffusion of friction debris in factory may cause pneumonia, etc.
Target model
Negative actuated type electromagnetic clutch / brake
CautionCaution
It is a characteristic of this product that clutch / brake are released upon passage of electric current through coil.
 
Please make sure that it should be suitable for purpose of use before assembly to machine.
Target model
Multi-disc type electromagnetic clutch / brake (wet type)
CautionCaution
Please conduct lubrication in accordance with the specifications with respect to type, volume and lubricating method of lubricant oil.
Departure from the specified operation may result in accompanying load like increased idling torque possibly causing injury due to machine running even at OFF- state.

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Home ... Engineering Information... Electromagnetic clutches and brakes... Safety Precautions