Timing Belts and Pulleys

The classic example of a real life timing belt drive system is the timing belt/cam belt system that is present in most automobiles on roads all over the world. It’s not an understatement to say that the mobility of the modern world is largely made possible because of the efficient operation of robust automobile timing belts.

The toothed timing belts in automotive applications are high performance belts, typically comprised of special materials that coordinate the rotational motion of the engine crankshaft with the cam shaft. This coordinated precision is necessary in order ensure that the cam shafts open the intake/exhaust values of the engine combustion chambers at the precise moment of compression and/or expansion in the chamber in order to ensure the sustainable continuation of the combustion process within the engine. This coordinating function is the pacemaker of the engine, and is it’s not functioning properly, there can be no combustion.

These belts must maintain an extremely high level of synchronicity and must be able to perform under high rotational speeds of thousands of RPMs which can easily be seen during a typical driving profile. They also must be robust enough to be operated in extreme temperature ranges, wherever automobiles can be driven- from hot, arid deserts to wet, frigid tundra. The fatigue life of these belts must also be very high, possessing high wear resistance, so that the drive is able to operate safely for thousands of miles.

This article comes from misumiusa edit released

Advantages conveyor belt

Conveyor belt capacity economic benefits installation and maintenance and other significant advantages of the conveyor belt have become one of the peoples preferred transportation equipment and they are more and more widely applied At the same time the performance requirements of the conveyor belt equipment are getting more high.

As a leading global manufacturer of crushing equipment, milling equipment,dressing equipment,drying equipment and briquette equipment etc. we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete plant plan.

This article comes from panola edit released

Deemed Power Savings of Cogged V belts versus Smooth V belts

Energy efficiency produces multiple well-known benefits, including reduced energy costs to end users, but also universal societal benefits of price suppression in energy markets, avoided electric transmission and generating plant costs, and reduced emissions. Because of these well-known benefits, energy efficiency is increasingly utilized as a resource to meet society’s energy needs. The energy-efficiency resource is often procured through utility or government-run energy-efficiency programs. Increasing energy savings requirements of these programs are producing a need for new ways to achieve energy efficiency.

Consider then, the cogged v belt. V belt drives are commonly used to transfer power from electric motors to a wide variety of applications. The energy efficiency benefits of cogged v belts over smooth v belts have been presented in various publications since the 1990s and the transition to cogged v belts is recommended by many organizations including the U.S Dept. of Energy.

Thus, a question must be asked: “Why are smooth v belts still used instead of its more efficient alternative, cogged v belts?” One of several factors is that efficiency programs don’t currently focus on incentivizing energy savings from cogged v belts. Most efficiency program administrators agree with the published literature on benefits of this measure and allow it through their custom programs. Custom programs however, require the end user to fill out forms with energy savings calculations. This is time consuming and likely results in reduced participation from end users who purchase v belts. Deemed savings for cogged v belts would allow prescriptive or up-stream efficiency programs to be designed to promote cogged v belts, easing the burden on the end user to participate in programs. However, until the publishing of this article, savings for cogged v belts has always been calculated on a custom basis for each application, and has been based on the associated motor horsepower. This article develops deemed power savings for cogged v belts of different profiles and lengths, without the need to know the customer’s associated motor horsepower.

To develop these deemed power savings, this article references previous publications and describes the different belt losses and benefits of cogged v belts. It then outlines a methodology to associate motor size to a given v belt profile and length based on guidelines by the Rubber Manufacturers Association (RMA) and the Mechanical Power Transmission Association (MPTA). Finally, the article presents tables for standard v belt cross sections and lengths with the calculated power associated with each belt and the corresponding deemed power savings from installing cogged v belts. With this information, efficiency programs could transform the belt industry by developing up-stream efficiency programs, perhaps similar to the point-of-sales programs for CFLs or LEDs.

This article comes from tandfonline edit released

PU Transmission Belt for Drive Transmission

PU transmission belt, also known as PU transmission belt mainly high quality PU particles as raw material which is produced after purification processing precision machinery science has a very high resistance to tension tensile strength This Polyurethane transmission belt is rough surface,Wear resistance and impact resistance.

The transmission belt easy to welding, easy installation, long service life It can replace traditional rubber products such as glass fiber insulation materials wood Used for drive transmission in packaging machine, printing machine, spinning machine, drive motor, porcelain brick etc.

This article comes from amazon edit released

Cogged V Belts Archives

Cogged V belts are essentially classic V belts with a flat belt and a corrugated surface. The cogs run horizontally on the underside of the belt for better traction. Cogged V belts work well with smaller-diameter sheaves and can withstand reverse bending, high linear speed and high-speed ratios. However, since the V-belt is cogged, there is a risk of the belt missing the cog and becoming misaligned. Other than the cogs, cogged V belts operate like classic V belts.

Classic V belts are the most tried and true belts in the industry. V belts help to solve the problem of alignment and slippage for power transmissions. They are now also the most commonly-used belts for power transmissions as well. The primary function of a classic V-belt is to disseminate power from a primary power source, such as a motor, to the secondary power unit. V belts excel at providing the best combination of bearings, speed transfer, traction and belt-life longevity. The trapezoidal — or “V” — shape of the belt helps it to track in the similarly-shaped grooves of the machine so the belt does not slip off while in use. While the V-belt tracks in the grooves, the belt creates a deeper wedge to better handle the increasing loads, which then increases torque tension and power distribution. As friction increases, so does temperature.

V belts are typically made out of rubber or a polymer, but may also have fibers from other materials added for reinforcement. Classic V belts have a high resistance to temperature (-31 degrees F to 158 degrees F), but more of a limited resistance to oil.

V belts were made originally to replace leather belts in industries such as heating, ventilation and air conditioning (HVAC), facility maintenance, material handling, oilfield supply, agriculture and rock crushers. Agriculture and industrial settings are the most common places to find classic V belts being used. V belts may also be referred to as light-duty (or “fractional horse power”) because they can only handle less than one horse power. These V belts are designed with a 40-degree angle to “wedge” the belt into the groove of the pulley. There are also standard-duty V belts, which can handle 1 horse power up to 500 horse power. The greater the load, the greater the wedging action. The manufacturing process combines a rubber compound with a polyester cord to increase strength and stability. Many classic V belts are also available as Kevlar V belts.

This article comes from offroadbelts edit released