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Specialist power transmission supplier JBJ Techniques Limited, of Redhill, Surrey, England were recently contacted by the staff of Bloodhound SSC R&D engineering team to solve
a problem on the fuel pump test rig. JBJ Techniques had worked with various team members in the past and this previous experience made JBJ an easy choice to assist with this project. The scope of supply was to produce a suitable drive coupling with a maximum diameter of 160 mm, capable of
transmitting 550 Nm @ 10,000 rpm, with as short an assembly as possible, and at the same time be able to accept misalignment within the drivetrain.
rotary-type blowers? Examples: for motor KW; RPM; temperature; pressure production; lifetime; etc.
In other words, how do I choose between belts or couplings?
Bellows couplings first began to be
widely used by machine tool builders
in the mid-to-late 20th century. With the
advent of CNC technology, machine
engineers started looking to improve
upon some of the negative influences
traditional power transmission couplings
can have on a precision rotary /
linear motion system.
He was out.
Nine years ago, Ross Rivard left the
coupling industry for the shimmering
new world of luxury automotive components at Lacks Enterprises, where he was immediately enveloped by platinum trim systems and chrome composite wheels. It was glitz and glam and as sparkly clean as the fresh-fromthe-dealership cars his products were embellished onto.
If you read only one article this issue, it should
be Norm Parker’s article on the Chinese bearing
manufacturing industry. Parker is an engineer
with General Motors, a true industry insider who has become
a regular contributor to Power Transmission Engineering.
Involute splines are commonly used in gearboxes to connect gears and shafts, especially when high torque is transmitted through the coupling. The load is shared among multiple teeth around the coupling circumference, resulting in higher load capacity than a conventional single key. However, the total load is not equally shared among all spline teeth, mainly because of
pitch deviations resulting from the manufacturing process. The load distribution along the spline engagement length is also nonuniform
because of tooth misalignments and shaft torsional effects. This paper presents an investigation of the influence of spur gear loads on the load distribution of spline teeth.
It's a fact that drive systems wouldn't function properly or efficiently without couplings. They quietly go about their business of transferring motion from one drive element to the next. In the PT market today, couplings have the unique challenge of satisfying a variety of customer needs including tighter tolerances, higher speeds and a more versatile selection process.
We have just returned from the Electrical Products Group Conference in
Sarasota, Florida. This is our favorite
venue because it allows us to speak
with the CEOs of nearly 25 global industrial companies that include General Electric, United Technologies,
Honeywell, ABB and Emerson, with
combined revenue of perhaps $500 billion.