SHIGA TECHNICAL CENTER
248 Nakajuku, Aisho-cho, Echi-gun, Shiga 529-1385, Japan
Nidec
Motor Corporation
St. Louis, MO
Nidec Motor Corporation - Hurst Facility
Princeton, IN
Hurst has been an integral part of life in Princeton,
Indiana, since 1950 when a small family owned tool shop first opened
its doors. Three generations of the Hurst family have maintained the
strong quality and high customer satisfaction goals as the company
advanced into designing and producing electric motors. For over 65
years, Hurst has been an innovator in the development, production
and application of precision motors. Since then, Hurst has grown into one of the top
producers of sub-fractional motors in the world. In 2010, we became
a part of the Nidec Motor Corporation to combine technologies for the benefit of our
customers.
Now as a strategic component of Nidec Motor Corporation, Hurst's product development teams have access
to all technology support functions of a world leading motor
company. This synergy enables Hurst to introduce new innovative
motor and control technologies, providing rapid solutions for our
customers. The interchange of ideas and technologies between Hurst
and Nidec has been exciting and has led to the use of advanced
computer share-vision technology for communications on a daily
basis. Hurst’s highly skilled engineers use Computer Aided Design
(CAD) systems with Pro/ENGINEER and SolidEdge software to design
customer specific applications. These advanced technologies allow
Finite Element Analysis (FEA) and Nodal Analysis capabilities to be
used.
Nidec is where technology and engineering come together to create
solutions for the benefit of our customers, driven without
compromise for a world in action.
Initially, Hurst’s core business focused on instrument grade timing
motors and assemblies, stepper motors and controls as well as
standard line motors. Today the business has grown into
manufacturing low-cost, high performance brushless DC servo motors
for many markets, including medical and computer applications.
One such application required the implementation of multiple
brushless DC motors into a single mail processing unit, at a
reasonable cost. Hurst eagerly accepted the challenge. To accomplish
this task, Hurst engineers chose the servo motor line because of its
capability to satisfy all 13 applications necessary for the mail
processor by using just four motor sizes. The cost-effective servo
motor also offered a low rotor inertia making it capable of quick
response.
Hurst then used the best cost bearings for each application,
integral molded insulation and ferrite magnets to further realize
cost savings. The laminations were changed and the machine windings
were redesigned permitting automated stator insertion that enabled
off-the-shelf winding equipment to be used and allowed an efficient
manufacturing process to be set-up. Motor electronics were added to
the exterior circuit board allowing decentralized controls for field
replacements and creating a complete intelligent servo mechanism at
each function. By combining an integral commutator, a magnetic
encoder and an electronic brushless drive inside a molded endbell, a
critical interface between the motors and the system’s electronic
controls was created. This approach minimized the piece count,
reduced the cost and quickened the response time. The plastic
endbell also shielded motor heat from the electronic components,
allowing high-temperature operation. Additionally, Hurst was able to
implement production tooling within just three months.
For another customer, Hurst assisted in developing an energy
efficient motor for domestic refrigerators, where they had two
challenges to consider: performance and environment. The task was to
design a single motor to replace two motors with distinctly
different duties and to consume less power. The evaporator fan
motor, located in the freezer area, works in cold and humid
conditions and operates at a lower airflow with higher static
pressure while the condenser fan motor, near the compressor, works
in a hot and dusty area and operates at a higher airflow and a lower
static pressure.
By continually providing solutions for customer applications and
developing precision motors that exceed their customer's needs,
Hurst upholds the highest standards set by the founder over six
decades ago.