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Infinitely Variable Commercial Transmissions
This infinitely variable transmission (IVT) uses steel discs and rollers (not tooth gears) for smooth acceleration and deceleration. They offer no 'emission spikes' from abrupt gear changes and very low engine revs at highway speeds for fuel efficiency. Maximum benefits are achieved with fully integrated powertrain control. Applications include off-road equipment. View the video.
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Light Tractor CVT is AOK
The continuously variable transmission (CVT) is available globally on lightweight tractors. With Diesel Saver Automatic Productivity Management control logic, the operator selects the desired working speed based on the specific application and time available. The control system adjusts [RPM with load changes] automatically and continuously.
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Belts, Pulleys, Chains & Sprockets . . . |
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Chains Linked to Energy Efficiency
Mechanical designers often overlook improving energy efficiency with modern roller chains adding to savings from new motors and drives. Bearing Roller Conveyor Chain incorporates cylindrical roller bearings for lower friction and greater strength. It also cuts costs because smaller motors and chain sizes can be used. Stick-and-slip motion is also mitigated.
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Site Gets You Belted Up
Software design tools are just some of the features at this PT Design Source belt-design Web site. Case histories, application expertise, CAD models, and product information (including part searching) are also available. Design engineers can use the site's resources in optimizing designs for performance or cost requirements.
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RV-E Precision In-line Reduction Gears Offer One Complete Solution
Nabtesco Motion Control, Inc.
Nabtesco Motion Control, Inc.'s RV-E Series reduction gears have a patented two-stage cycloidal design that provides higher shock resistance than traditional reducers. With large torque, high-ratio, and significant shock-load capabilities, the RV-E Series offers extreme precision and excellent quality in one complete, cost-effective solution. |
Coupling Selection Guide
Mayr Corporation
Our new online tool assists in the selection of a backlash-free shaft coupling based on your design parameters. From our complete line of servo couplings to our large all steel industrial couplings, each offering multiple configurations and shaft mounting arrangements, Mayr has the right coupling for your application. |
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Brakes Critical in Overhead Cranes
Brakes are a key item when considering overhead cranes. The Crane Manufacturers Association of America calls it a top 10 consideration in its buyer's guide. Because an overheated motor brake is dangerous, it has to be sized by service class and application. The guide covers controls, hoists, components, and operating environments.
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Self-lube, Long Life
These Lube-for-Life pillow blocks are maintenance-free and offer a 3x longer life than blocks lubed during installation. Self-lubricating cartridges are pressed into each end of the block housing, plus initial EP2 grease on the bearing. The cartridge is under constant pressure, so a lubricant film between ball bearings and race is ensured.
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Convert Your Car to a Hybrid!
In about three years and with $3000, you may be able to convert your gasoline powered car into a hybrid. Former IBM engineer Charles Perry is developing a retrofit kit to install electric motors on each wheel between the brake and the hub (along with batteries in the trunk). He is hoping to double vehicle gas mileage with the kit.
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Tool Kit Tunes Sales
The Power Transmission Distributors Association has just released its Custom Solutions Selling Tool Kit to help show a company's value beyond competitive pricing. The kit helps users pinpoint which products and services matter most to customers, and quantifies savings. The kit includes worksheets, templates, and value calculators.
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IronHorse™ Worm Gearboxes (Gear Speed Reducers)
Automationdirect.com
Gearboxes, also known as enclosed gear drives or worm gear speed reducers, are mechanical power transmission drive components that can drive a load at a reduced fixed ratio of the motor speed. The output torque is also increased by the same ratio, while the horsepower remains the same, meaning less efficiency losses. |
Fine Cyclo® Speed Reducers
Sumitomo Machinery Corp. of America
Fine Cyclo® Speed Reducers from Sumitomo Machinery Corp., feature zero backlash, minimal lost motion, and high torsional stiffness. These reducers excel in applications that demand accurate positioning. Offering high shock load capacity and compact size and high torsional stiffness. Also:
• Small hysteresis loss
• High efficiencies and low vibration
• Multiple configurations for application flexibility |
Careers & Commentary . . .
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Design for Loyalty
The market leaders in any industry provide quality products as a matter of course, observes SKF Director of HVAC Business Robert Leimkuhler, Jr. In this Machine Design guest editorial, he says that quality minimizes warranty claims and increases customer loyalty. But the effort to instill quality begins early in design, and OEMs should work with suppliers, particularly those that can offer virtual testing, lubrication recommendations, and benchmarking to ensure reliable performance, he adds.
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Wisconsin: Still Hub of Outboard Universe
The outboard motor (a microcosm of power transmission components) is more than 100 years old, and the two biggest manufacturers over most of that time were headquartered in Wisconsin — Evinrude and Mercury Marine. The firms were bitter rivals, fueled by the antics of the paranoid engineering genius Carl Kiekaefer, who headed Mercury. He had employees make important calls from outside the company to avoid 'tapped' lines, and even sent 'industrial spies' to a restaurant frequented by Evinrude engineers.
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Share Your Thoughts . . .
About This Month's Topic
Are You an Engineer?
Should only PEs be called engineers? Does either a degree or a license define an engineer? What role should the Professional Engineering Act adopted by many states have in this matter?

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