They may be used as a source of motion, to efficiently transmit power, or to track relative movement. Belt and chain drives august 15, 2007 2 august 15, 2007 3 objectives understand principles of operation of flexible drive systems. At overhauls, the chain must be examined for signs of damage, such as cracks in the wheels or side bars, jamming links, pitted wheels, traces of blows on the outer parts on account of catching, or scoring on the insides of the side bars. The main difference between the two drives is that a chain drive is powered by a chain loop, while a belt drive is powered by a belt. These belts do not require lubrication and, therefore, maintenance costs are minimized, and contamination from oil drip. Preventive maintenance and installation of v belt drives relieve belt tension 1 after removing the drive guard, loosen the drive takeup and move the sheaves closer together to facilitate the removal of all old belts, and to insure installation of the new belts without damage. Drives roller chain dimensions and horsepower tables engineering chain product introduction drives 2 drives chain product catalog chains engineered to enhance performance from corrosive environments to heavy shock loads, we engineer the optimum precision roller chain for your application to help increase uptime and reduce maintenance costs. It can be operated at a high temperature like a belt which cants not operate at high temperatures. The purpose of a belt or chain drive is to transmit power from one rotating shaft to. Contitech timing belts drive water taxis in venice clean air for venice this is the target vision for the 550 water taxis plying the citys lagoon and canals, using highperformance hybrid drives. It is power point presentation on belt and chain drive. Clamps are available in plastic and aluminum for single and doublesided timing belts.
Tighten takeup bolts until desired chain tension is reached. A look at belt, chain and gear drive technology power. The chains are made up of a number of rigid links which are hinged together by pin joints in order to provide the necessary flexibility for wrapping round. Chain lubrication best practices for drives and conveyors. This setup comprises of a driving pulley towards the gearbox output shaft and a driven pulley at the wheel the two pulleys are connected by a belt which has teeth, or grooves on the inner side, matching the. The main disadvantage of the belt drives and the rope drives is that the velocity ratio does not remain constant, but varies on account of slip. We have found the following procedures play a prominent part at almost every installation where high standards of maintenance are achieved. Top 10 preventative maintenance tips for product handling. Handbook for chain engineering design and construction. Chain drive, the speed ratio is good as compared to belt drive. The chain drive needs accurate and careful mounting. After automatic or manual splicing of the thread, the spindle brake is released and. Maintenancefriendly, chain which can easily be cut to length sl chains have proved themselves in practical cases in the most varied chain applications world wide.
Mechanical drives belt, chain, gear advantages, and disadvantages introduction. A chain drive, for a given capacity, is narrower than a belt, and the sprockets are smaller in diameter than the belt. Md14 belt and chain drives university of northern iowa. They are used for transferring power from one system to another. In a daylong education seminar last november, convened by the hamilton, on, section of the stle, the society of tribologists and lubrication engineers, presenters from tsubaki of canada ltd. They are also suitable for low and high speed drives in those speed ranges where conventional belts have limited capacity. Inspecting and replacing belts and faulty drive components before they fail.
Super hc belts can be used on all industrial integral horsepower drives. Belt drives are a costeffective, reliable means of transmitting power between shafts. The sprocket diameter of a chain drive could be smaller than a belt pulley while transmitting the same torque. The sprocket diameter of a chain drive could be smaller than a. Belt drives a belt is a looped strip of flexible material, used to mechanically link two or more rotating shafts.
Low tension inspection tension ensure belt setup including catenary sag is low not tensioned or pretensioned. Easy installation and replacement easy to cut and connect chains. Belt and chain drives objectives introduction introduction. The importance of this inspection is illustrated by the arrow. Provide proper tracking for belt conveyors belt conveyors have unique maintenance issues. In many cases, they can replace high maintenance chain and gear drives. Preventive maintenance provides increased life of belt and drive components. These belts permit large speed ration and can transmit higher power. Determine allowable forces and torques for flexibledrive systems, along with the necessary sprockets or sheaves. Chain drives are made of metal, which makes them more durable and stronger compared to a belt. Maintenance friendly, chain which can easily be cut to length sl chains have proved themselves in practical cases in the most varied chain applications world wide.
Poly chain drives also eliminate maintenance and noise problems associated with chain drives and reduce maintenance required on other problem power transmission drives. Make sure both sides are adjusted the same amount to maintain sprocket alignment. A wide selection of timing belt clamps for use in linear drive systems is offered. Around 75% of chain drives are not properly lubricated because of poor maintenance practices and the time required to daily handlubricate chain drives. When compared to chain drives with constant lubrication problems, or gear drives with mechanical problems and high costs, belt drives are the most costeffective and reliable means of power transmission. Difference between chain drive and belt drive difference. Just because vbelt or synchronous belt drives are prevalent does not mean everyone knows how to care for them. Regarding service life, synchronous belt drive systems will last at least. Chain must contain even integer number of links hence cannot pick an arbitrary centre distance and chain pitch nearest chain lengths in pitches for a contemplated centre distance, cc, are calculated by empirical formulae like for a two sprocket system. Machine elements and design uqf 6 mechanical engineering. Belt and chain drives august 15, 2007 2 august 15, 2007 3 objectives understand principles of operation of flexibledrive systems. Therefore, do not grind the chain pins, bushings, or holes in the sidebars in order to assemble the chain as supplied from the factory.
Belts, ropes and chains have been used as traction. The oil spray should be distributed uniformly across the entire width of the chain. Powermax 1200 garage door opener pdf manual download. Chain reliability is based upon a good press fit of the pins and bushings into the sidebars. A good rule of thumb is 14 deflection in the chain between the sprockets. Chain drives industrial wiki odesie by tech transfer. Stock belt drives are presented in this manual for your convenience. Maintenance technical mechanical mtm training program. The new fenner roller chain products are a result of this technology. The chain drive is used in bicycles, motorcycles, and many more engines.
Mechanical analysis belt and chain drives city, university of london. Dorner aquapruf 7600 series installation, maintenance, and parts manual 48 pages ce end drive conveyors, flatcleated belt conveyor. The chain can be used on both sides and drive multiple shafts at the same time. Amatrols mechanical drives 2 learning system 97me2 covers the construction, operation, installation, and alignment of heavyduty vbelt drives, synchronous belt drives, and heavyduty chain drives. Layout of chain drives general information chain drives chains for industrial use automotive chain drives conversion charts. The same guidelines given for periodic maintenance of manual and drip lubrication of chain drives apply to chain conveyors. Includes installation and maintenance of mechanical drives, from chain drives to enclosed gear drives. Narrow belts are purposely designed so that the top of the belt will ride above the o. Trilog 1500, powermax 1500, powerlift 900, gpower 900, silentmax, sc 1200, silentmax 1200, cb, cb 1200. Download citation belt and chain drives this chapter explains about belt and. Since chain drives are positive drives there is no slip, hence the velocity ratio will remain constant.
Maintenance of chain drive the chain drive is to be checked at the prescribed intervals given in the manual. Review a full course list for mechanical systems technician. Synchronous belts, however, are maintenancefree because they do not require lubrication. Alteration of chain destroys the integrity of the press fits of the chain assembly. Mechanical drive maintenance is available in online maintenance training and course manual formats. Chain and belt drives are vulnerable, and diligent maintenance pays sizable dividends. Determine allowable forces and torques for flexible drive systems, along with the necessary sprockets or sheaves. Chains are lightweight, robust, easy to install and adjust, and highly efficient.
Another notable difference is the material of the drive. This phenomenon results in internal agitation to the material on belt and therefore the materials external faces assume inclination at surcharge angle. The kinematics of belt and cable drives allow them to achieve. The hybrid vehicle also includes a manualstyle transmission configured to.
Timing belts, pulleys, sprockets, and chains for power. If your drive requirements speed, ratio, center distance, space. This reliability can however only be obtained when belts and drives are properly maintained. The chain drive need careful maintenance, lubrication and slack adjustments. Inspecting and replacing belts and faulty drive components before they fail will reduce costly downtime and production delays. These links consist of two cranked plates which are press fitted onto a bush and roller. It should be noted the use of the offset link derates the capacity of the standard transmission chain, particularly the use.
In belt drive, little difficulties have when it gets damaged. Both belt and shaft drives have some major disadvantages so chain drive is still the most popular power transmission system fitted on motorcycles today. All drive chains should be visually inspected, inspected, on a regular basis, to monitor accumulative wear between the links. Preventive maintenance and installation of vbelt drives relieve belt tension 1 after removing the drive guard, loosen the drive takeup and move the sheaves closer together to facilitate the removal of all old belts, and to insure installation of the new belts without damage.
General use drive chains general use drive chains drive. Important to your business an effective preventive maintenance program saves time and money. Installation and maintenance of vbelt and timing belt drives. Chains and belts require periodic adjustment from wear and stretch. The exact application may change depending on system. When coupled with a regularly scheduled maintenance program, belt drives will run rela. For oil stream lubrication, check the oil level in the reservoir at least daily and add oil as necessary.
There are flat belt and v belt used for the power transmission. During this time new design features and production processes have been introduced. Design data required type of prime mover, or driving machine electric motor starting. Maintaining belt drives for best reliability reliabilityweb. Chain drives, unlike belt drives, do not slip or creep. Preventative maintenance checklist dynamic conveyor. Industrial belt and drive preventive maintenance pdf catalogs. Chain and belt tension drive chain tension check the slack. That is why they are found all over the oil patchmud pump drives, shale shaker screens, pump jacks, compressors, injection pumps, accumulator units. Maintenance technical mechanical mtm training program summary. B elt drives are often considered the fuse of the power transmission drive path, which can be an advantage for belt drives. In special deep groove sheaves, belts will ride below the top of the sheave. Com tb woods is an industry leading designer and manufacturer of mechanical power transmission equipment for industrial control. Construction and maintenance of belt conveyors for coal.
Contitech timing belts drive water taxis in venice clean air for venice this is the target vision for the 550 water taxis plying the. Mechanical drive maintenance training tpc training. Energy is required to drive the machines and equipments for a variety of applications. Introduction in belt and rope drives slipping may occur. An endless chain running over toothed wheels mounted on the driver.
The potential for long service life is built into every gates belt. Mechanical drives belt, chain, gear advantages and. A related problem, uneven belt and cord loading, results in unequal load sharing with multiple belt drives and leads to premature failure. Chains operate on a similar kinematic principle, and the use of high strength steel enable them to. Maintenance tip adjusting conveyor drive chain alignment. Adjust the drive chain to remove excessive slack and prevent possible damage from a jumping chain. This type of belt has a circular crosssection and is used with the grooved pulleys. For example if you want to move power of some distance then belt or chain would be a go. Power transmission belts engineering guide habasit solutions in. What you need to know about belt and chain drive maintenance. If there is no frequent proper lubrication the chain wear out faster than belts and ropes.
If the distance between shafts is short, it can be used vertically. Second of three parts belt drives are a costeffective, reliable means of. A belt drive system isnt as common as a chain drive system, though in terms of popularity, it stands at a distant second position. Belt belts are looped over pulleys belt drive when a belt is used for power transmission it is called a belt drive. Improper drive maintenance is the biggest source of belt drive problems angular misalignment fig. Chain drive can be used up to 3 m in distances between small and large centers. To adjust chain tension, loosen the bolts that fasten the motor base to mounting angles on both sides. The chains are made up of a number of rigid links which are hinged together by pin joints in order to provide the necessary flexibility for wrapping round the driving and driven wheels. Super hc vbelts have exclusive gates construction features for extra long. Constant tension, no retension required, maintenancefree. Good belt conveyor and idler maintenance begins with good housekeeping, the master key to getting the highest return on your conveyor dollar. When compared to chain drives with constant lubrication. Even in fire hazards it does not faces any bad problem. When repurposing conveyors, take the conveyors belt pull rating and horsepower requirements into consideration before increasing its workload.
Jun 01, 20 chain and belt drives are vulnerable, and diligent maintenance pays sizable dividends. Vbelt drives, chain drives, and synchronous drives. In that line of thinking, not much thought is given to the impact on overall equipment reliability with respect to the belt drives connecting driver and machine. When compared to chain drives with constant lubrication problems, or gear drives with mechanical problems and high costs. The production of chain drive is higher than belt drives. The wide end is placed over the last link in the chain and a connecting pin is installed and secured with a split pin. Understanding motorcycle chain wear, maintenance and. However, optimum belt drive performance requires proper maintenance.