In this issue of the Mechanical Monthly Newsletter there are articles on new options for a ball-screw drive and single v-belts.

The highlighted products are right-angle gearmotors, quick-connect air-brake fittings, and double shut-off quick couplings.

Be sure to check out the industry update to find out about a damper to steady wind turbines.

Thanks for reading and have a Happy Holiday!

Options make ball-screw drive flexible and versatile
The single-axis ball-screw-driven actuator from Misumi USA Inc., Schaumburg, Ill., is built on a blackanodized, extruded 6063-T aluminum base with 1045 steel side supports. It can be configured 208 different ways, letting users customize it to meet their needs and budget. The C10 ball screw, for example, can range in diameter from 12 to 20 mm, while the lead can be between 4 and 20 mm. The base width, stroke, and table length can also be specified from off-the-shelf components.
Full Article

Components for Drivelines: Single V-Belts
Although classical V-belts can be used individually, classical belts tend to be somewhat overdesigned for drives light enough to demand only one belt. Thus, a special category of belts evolved specifically for single-belt applications, with the terms "single belt," "fractional horsepower" (FHP), or "light duty" denoting this class. Originally, these belts were developed to serve the needs of OEM consumer applications such as furnace blowers, lawn and garden equipment, and home shop tools. The belts were generally custom designed for each application, but as replacement markets developed, the sizes were standardized.
Full Article

Right-angle gearmotor
A light-duty, self-contained worm-gear drive includes a dc motor, gearbox, output shaft, and brake. The Model MC137C has a hardened-steel and bronze gear assembly with lifetime lubricated ball bearing enclosed in a high-strength, heat-treated, and corrosion-resistant aluminum housing. Gearbox ratios range from 8.5:1 to 63:1 with custom output shafts available up to 0.875-in. OD. Mounting flanges accommodate three or four bolts positioned on a 2-in. center. The unit comes with a 0.25 or 0.44-hp TENV permanentmagnet dc motor. Operating voltages available include 12, 24, 36, 90, or 180 V. Other motor options may be available on request.
More Information:
Euclid Universal

Quick-connect air-brake fittings
A brass tube provides support for full airflow and ease of tube connection with low insertion force. The Q-CAB 217 Series meet D.O.T. FMVSS 571.106-10, SAE J1131, and SAE J2494-3 re - quirements and are qualified with the Synflex Eclipse multilayer air brake tubing. The fittings are used for medium and heavy-duty truck, bus, and mobile off-highway air-brake systems.
More Information:
Eaton Corp., Hydraulics Operations

Double shut-off quick coupling
The minimum-spill, thread-to-connect S51 Series double shut-off quick coupling is designed for use with most industrial fluids. The fluid-transfer coupling can be connected under full system pressure by rotating the female threaded heavy-duty ductile cast-iron wing nut or brass hex nut onto the mating male threaded tip. The unit features a steel interchange and internal parts are brass and stainless steel with the body and top outer shells electroless-nickel-plated steel. A brass-body tip and poppet are combined with a steel valve for corrosion resistance. The coupling features minimum air inclusion during connection and minimum fluid spillage during disconnection.
More Information:
SafeWay Hydraulics Inc.

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UPCOMING WEBCASTS

Discovering Direct Digital Manufacturing: Impact and Opportunity
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DATE: December 12, 2007
TIME: 2:00pm ET

Designers face difficult design challenges every day and each issue has different technological options for a solution, but no one technology works every where, every time. RedEye RPM, a business unit of Stratasys, Inc. has invited Todd Grimm, a well known rapid prototyping consultant, to discuss different technologies, leading to a closer look at where DDM (Direct Digital Manufacturing) technology works and why. The presentation will cut through the confusion to provide designers and manufacturing engineers the data they need to move in the right direction for their projects.

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Introduction to Direct Gear Design
Sponsored by AKGears
DATE: January 16th, 2008
TIME: 2:00pm ET

Invention of the gear hobbing process about 150 years ago revolutionized not only gear fabrication, but also gear design. The cutting edge of the hob presents the generating gear rack. The standard universal gear design approach provides gear interchangeability and reduces tooling inventory, however, it also constrains performance for particular gear applications.

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Damper steadies wind turbines
A company building relatively low-cost, steel-tube towers for wind turbines was able to lower the price of construction by 30%, but was having difficulty with large, transient wind loads shaking the structure. This can throw the propeller, bearings, turbine, or other drivetrain components out of alignment, then they wear and fail prematurely. To stiffen the tower without adding much weight, the company called on Lord Corp., Cary, N.C. (lord.com), to adapt one of its Fluidastic dampers.
Full Article

Tolerance Calculator
To assist designers in specifying tolerances for die cast components Dynacast has a developed an online tolerance calculator. Both standard and critical tolerances can be calculated in metric or inches for linear, flatness, concentricity and angularity (radius). Although the calculator is a guideline it gives designers a sense for the die casting process.
Dynacast Inc.

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