Deep Dive into Electro-Mechanical ActuatorGo behind the scenes of EMA Development / Manufacturing

01.Key to High Performance

Reduction of Backlash

Minimizing the meshing error of the gears, speed fluctuations and operating noise can be reduced; Meanwhile, backlash can also be reduced. It means the machining of gears highly contributes to the performance of Actuators.
Tamagawa has abilities to design and manufacture gears in house and they have a key role in high performance Actuators.

Suppression of Friction Torque

Improper fitting leads to increased friction torque and has a huge effect on the performance of Actuators. Additionally, this sets off vibration and noise, and makes an impact on the product life due to the seizure and damage of the ball bearings.
Tamagawa designs the whole structure considering the output load characteristics and load direction of Actuators so as to suppress the friction torque as much as possible.

Mitigation of Misalignment

Misalignment of the rotating shaft causes noise, torque unevenness and rotational speed unevenness. In addition, the accuracy of output load is negatively affected, especially for the performance of the clutch and torque limiter.
Based on many years experience, Tamagawa focuses on the position accuracy of Actuator housing and select best fitted machining method.

02.Environmental Resistance

According to DO-160G, Tamagawa Electro-Mechanical Actuators have been tested and demonstrated their reliability in required environmental conditions.
The key to the environmental resistance is their perfect sealing, material / device selection and lower resistance of bonding.

Waterproofness

These tests determine whether the equipment can withstand the effects of liquid water being sprayed or falling on the equipment or the effects of condensation.

(Reference: RTCA DO-160G, Section 10.0)

Sand and Dust

This test determines the resistance of the equipment to the effects of blowing sand and dust where carried by air movement at moderate speeds.

(Reference: RTCA DO-160G, Section 12.0)

Lighting Direct Effects

The tests determine the ability of externally mounted equipment to withstand the direct effects of a lightning strike.

(Reference: RTCA DO-160G, Section 23.0)

03.Commitment to High Quality

Tamagawa has perfect confidence in quality of Electro-Mechanical Actuators. Our manufacturing processes include some special countermeasures to stabilize performance and eliminate failures of Actuators.