NTN Develops a Compact Planetary Roller Screw Type Electric Brake Actuator
Brake by-wire technology is the next generation brake system and is a prime component providing greater improvements in vehicle stability systems. NTN has developed a new planetary roller screw electric brake actuator for high-end performance. This design is comprised of a compact independent linear motion mechanism combined with a planetary roller screw, and an electric motor. This linear motion mechanism is able to generate pad pressure without a speed reduction mechanism by means of friction transmission between the sun roller and planetary roller. The pressure required for friction transmission to the planetary roller screw mechanism is designed to have no endplay or allowable lash. This design results in zero wear from vehicle vibration and provides greater durability. It is also possible to apply braking force during a vehicle stop with the loss of supply of electricity to the motor.
This actuator was exhibited at the Tokyo Motor Show in October 2007.
[Features]
a. Light weight and compact design
An independent planetary roller screw is used as a brake mechanism. Speed reduction mechanism with a high reduction ratio, that is required for ball screw type or ball ramp type, is unnecessary.
b. High durability
No endplay in the planetary roller screw mechanism prevents micro wear due to vehicle vibration.
c. Brake force retention function
Brake force is assured without supplying electricity to the motor.
[Contact]
Intellectual property Department, NTN Corporation
TEL: 0538-21-1150
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
Next Conax Technologies Wire and Probe Seal Available in 316L Stainless Steel
BRIEF INTRODUCTION
Cnbearing is the No.1 bearing inquiry system and information service in China, dedicated to helping all bearing users and sellers throughout the world.
Cnbearing is supported by China National Bearing Industry Association, whose operation online is charged by China Bearing Unisun Tech. Co., Ltd.
China Bearing Unisun Tech. Co., Ltd owns all the rights. Since 2000, over 3,000 companies have been registered and enjoyed the company' s complete skillful service, which ranking many aspects in bearing industry at home and abroad with the most authority practical devices in China.
