Andrew Lechner

Sales & Marketing Manager

R+W is a manufacturer of precision couplings and line shafts for highly dynamic applications. The company is a solution provider for power transmission and motion control industries, plus ISO 9001 certified. The company's safety couplings are TÜV certified. Founded in 1990, today R+W employs over 150 employees.

See Andy Lechner from R+W giving Lee Teschler of Machine Design some tips on the selection and use of bellows and elastomeric insert couplings.

Articles by Andrew Lechner
Basics of flexible bellows couplings 2
Bellows couplings transmit power from 0.5 to more than 100,000 Nm at speeds from 0 to 100,000 rpm. They offer distinct advantages, but replacing other coupling types with them requires solid understanding of their operation.
Controlling overload in high-torque drives
High-torque drive applications typically involve larger load inertias and slower ramp times for acceleration and deceleration than those of standard applications.
Talkin' about Shaft: Basics of line shafts, jackshafts, and torque tubes
They're lightweight with straightness and lateral stiffness that boost stability at higher speeds. Learn the basics of line shafts, so you can properly use them in your next application.
Engineering roundtable: Coupling experts debate the proper use of couplings in fast applications
Couplings are probably the most compliant and predictable component in a motion system. Turn up the speed, however, and it's a different story. Learn how to address this engineering issue.
Engineering roundtable: Proper use of locking devices in motion applications
Locking devices connect, or power transmission components to rotating shafts. In this report, we polled locking-device experts for their advice on optimizing lifetime and ease of use. Here are the responses, which we believe you'll find most helpful.
Motion Design 101: Servocoupling dynamics
There's a Japanese saying that the nail that sticks up will be hammered down. Servocouplings were developed when servodrives and positioning feedback got accurate enough to make the backlash.
Engineering roundtable: Picking couplings, shafts, and locking devices
What use are good components if their performance gets garbled in transmission? Couplings, shafts, and locking devices smooth even brute-force inputs for safer, more consistent output. However, protecting other costlier components does take its toll. Here we discuss connector issues, and where clever gains can be made.
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