Gear Pump Operation and Maintenance

from PumpScout

Gear pumps are the most common type of positive displacement pump, ideal for transferring high viscosity fluids such as automotive oils, plastics, paint, adhesives, and soaps. They operate by creating suction at the inlet with a rotating assembly of two gears –a drive gear and an idler. Pump flow is determined by the size of the cavity (volume) between gear teeth, the amount of slippage (reverse flow), and the speed of rotation (rpm) of the gears.

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Costs and Capabilities of Pneumatic, Electric Actuators

Pneumatic or electric? It’s not a new question. The merits of each have long been subject to discussion, but a fair amount of confusion continues to exist about which makes more sense for what.

For example, are you considering replacing a compressor and 200 pneumatic cylinders with electric actuators because you think you’ll save on compressor costs? Or, perhaps you are thinking about building a new machine with pneumatics because 30 electric actuators are far too expensive. Make the wrong decision in either case and you could waste tens of thousands of dollars a year. Continue reading

The Meaning of Bearing Life

How long will a bearing last? Standardized life equations help to answer.

Experience shows seemingly identical rolling bearings operated under identical conditions may not last the same amount of time. In most cases, it is impractical to test a statistically significant number of bearings, so engineers rely on standardized bearing-life calculations to select and size bearings for a particular application. These calculations continue to evolve and become more accurate over time, reflecting the collective experience of the bearing industry, including recent advances in manufacturing, tribology, materials, end-user condition monitoring, and computation. Continue reading

The True Cost of Bearing Lubrication

by Matt Mowry, Product Manager, Igus

Introduction
Machine and equipment manufacturers today are feeling more pressure than ever to reduce costs without sacrificing machine performance — a balancing act difficult to achieve. OEMs often overlook a simple solution that can have a positive, long-term impact on profitability for themselves and their customers, i.e. — the elimination of bearing lubricant. By eliminating lubrication systems where possible, OEMs can reduce production costs while at the same time make their equipment more marketable and less expensive to operate for end users. What are the issues with bearing lubricant? According to a major ball bearing company, 54 percent of bearing failures are lubrication-related (Fig. 1).

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How a Photoelectric Sensor Saved My Job

by Larry Bush

photoelectric sensor

In 1996 I was employed as maintenance supervisor at an olive cannery in the heart of California’s fertile San Joaquin valley. We were restarting the cannery after an extended shutdown while the cannery changed owners. This was my first opportunity to work in the food industry and a cannery. There were issues for me to learn and learn fast. The new harvest season’s olives were due to start arriving just four weeks after I was hired.

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Pump Technology Balancing Tradition & Innovation

by Heinz P. Bloch

Process pump reliability logically involves a combination of fluid-related performance and design decisions that focus on engineering materials and the configuration of mechanical components. Recent case studies have pointed out improvement opportunities in the relative design conservatism found in certain process pump models. Combined with deficiencies in the training of personnel, it can be argued that pump reliability has not made as much progress as it perhaps could.

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10 Steps to Pump Reliability – Part 2

by Tom Dabbs and Dan Pereira

Hopefully you read Part 1 of “Ten Steps to Pump Reliability” and have been anxiously awaiting to read Part 2 of the article. You may get the impression that implementing these steps will be costly and very difficult to achieve. The thing you need to bear in mind is: “You are already spending the money.” The only question is: “Are you getting the result from your pumping systems that you are looking for?”

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