Suitable for small size pulleys diameter 20 mm, achieving very high peripheral speed up to 60 ms the belt can counter flex and work on the backside wide range of pulleys for taper bush available from stock 500 0. Vbelt pulley roller chain, sprockets, pulleys, belts. Circle type bush bore bore width length step step dia. They eliminate reboring and keywaying prob erns since each pulley need not be finished according to different bore and. Skf designation prefix the number of grooves on the pulley belt type belt section being applied to the pulley conforms with standards for dimensions for groove profile pitch circle pulley dimension wedge belt pulley millimetres mm. Face width the length of a pulley s cylindrical body. For example, this pulley is the exact same part used by john deere when designing and creating the lawnmower or tractor. Belt profile, or the style and sizes of the belt being integrated. Drivehead pulley a conveyor pulley used for the purpose of driving a conveyor belt. Depending on the drumrope diameter relationship helixgrooved drums can be used for up to 3 layers without excessive rope wear.
Home pulleys finished bore vbelt pulleys double groove bsection sheaves pulley fixed bore. How to measure vbelt pulleys identifying vbelt pulleys. V belt pulley technical specification taper lock hic manufactured universal brand. Naismith engineering stock the pitch sizes of jand. Pulley grooved with flange 6 groove wide 64mm 26mm 14. The main stress line in a trapezoidal tooth timing belt is at the base of the teeth. V belt pulley technical specification bore bush pitch. On this channel you can get education and knowledge for general issues and topics. For the below illustrations we use a standard single groove vbelt pulley. Outside diameter, or the distance across the pulley when measured between groove edges. The diameter of the pulley measured at the groove pitch width. For hitachi type alternators, unit numbers lr150711, lr160723, lr160723b, lr160724, lr160725, lr160725c, lr160727. Profile and dimension of pulley should be in accordance to din 2211, bs. V belt pulley technical specification taper lock hic manufactured universal brand universal vbelt pulleys ensures more mileage form vbelt drives, in a way.
We standardly stock over 8,000 skus of different vbelt pulleys alone. To account for the effect of bend radius on wire rope strength when selecting a sheave, use the table below. It is fabricreinforced on a base and can be made in various heights. All vbelt pulleys are compliant with current legislation and are made of cast iron. Roll groove configuration has rounded edges which reduce the available pipe end movement expansion, contraction and deflection. Inspection of sheaves and drums, dimensions of groove radius. The wedging action of a vbelt in a pulley groove results in a drive which is more compact than a flat belt drive, but short centre vbelt drives are not conducive to shock absorption. Naismith engineering carries small diameter pulleys in pilot bore and the larger diameters in taper bore. Minimum sheave drum groove dimensions industrial rope. About 24% of these are pulleys, 6% are transmission belts. The gauge will only contact at the bottom of the groove and there will be daylight along both sides. Universal vbelt pulleys ensures more mileage form v belt drives, in a way, pulley is made from superior quality graded cast iron, with grooves property. Center diameter is the distance or distances between the shafts of the pulleys in the. This vgroove idler pulley works both as an oem replacement and as a general purpose pulley for power transmission such as compressors, industrial fans, lawn mowers, snowblowers, and electric motors.
On a vgroove drive, for instance, the centerline or middle of a pulley would be the lowest point of the v, and you would measure from there to the edge of the hub. A pulley is also called a sheave or drum and may have a groove between the two flanges around its circumference. Dimensions shown on the dimensional tables are not binding even if they are. V belt pulley technical specification taper lock hic. Generally, the frontside offset is the longer of these dimensions, while the backside offset is the shorter. A wide variety of standard v belt pulley sizes options are available to you, such as type, standard or nonstandard, and material.
Find vbelt pulleys on globalspec by specifications. Finer pulleys under go stringent balancing tests, to ensure each pulley functions efficiently. The drive element of a pulley system can be a rope, cable, belt, or chain. Wire rope idler flat belt pulley duplex sheave and flat belt polyv sheave crown face pulley idler sheave all martin sheaves and timing pulleys can be manufactured to meet your special requirements. Engineering vbelt sheave groove dimensions masterdrive. Groove angle dimensions a w w b d x s belt series pitch diameter range inches inches inches inches inches 3v under 3,5 3,5 6 6,01 12. The htd design requires substantial belt tooth to pulley groove clearance backlash to perform. Be aware that all web orders may take up to 3 days to process if you need your order to ship more quickly email. V belt pulley sheave sizes table chart engineers edge. This area is intended to act as the contact surface for the conveyor belt. Modern drum design embraces extensive considerations beyond the scope of this publication. This is the distance from the centre of one groove to the centre of the next groove. Alternator pulley dimensions tuff stuff performance.
The main stress line in a trapezoidal tooth timing. The very first item to be checked when examining sheaves and drums, is the condition of the grooves. A belt and pulley system is characterised by two or more pulleys in common to a belt. Aug 16, 2018 for example, this pulley is the exact same part used by john deere when designing and creating the lawnmower or tractor. The v shape causes the belt to wedge tightly into the pulley, increasing friction and allowing higher operating torque. Fenner metric pulleys conform to is and iso groove specifications. Two types of groove gauges are in general use and it is important to note which of these is being used.
Roll grooving removes no metal, cold forming a groove by the action of an outer grooving roll being forced into pipe as it is rotated by an inner support roll. Dimension of grooves of vpulleys suitable for banded belts rma. Finer power transmissions carry a range of taper lock vbelt pulleys in. As smaller diameter pulleys are used, the clearance required to operate properly is increased.
Fatigue life repeated bending and straightening of wire rope causes a cyclic change of stress called fatiguing. This vgroove drive pulley works both as an oem replacement and as a general purpose pulley for power transmission such as compressors, industrial fans, lawn mowers, snowblowers, and electric motors. Taper lock bushes weld on hubs sizes 1008 to 5050 upto 125 mm maximum bore size. The v shape of the belt tracks in a groove on a pulley or sheave. Alternator pulley dimensions tuff stuff performance accessories, 9004 madison ave. For the below illustrations we use a standard singlegroove vbelt pulley.
Identifying a polyv pulley to identify a polyv pulley the following information must be known. It comes with a bore adapter to bush down from 17 mm to 38 in. Typically mounted in external bearings and driven by an external drive source. Measuring a vbelt pulley is simple, however, when it comes to properly identify a vbelt pulley there is a multitude of different styles and options. Generally, the angle of a vgroove is between 32 and 40. Double groove bsection sheaves pulley fixed bore rainbow. Face width the length of a pulleys cylindrical body. Traction increases with the decreasing groove angle. To check size, contour and amount of wear, a groove gauge is used.
The pulley range designation from skf has the following is an example to indicate set up. Sheave groove inspection yoakum technical consulting llc 710 brannon field lane houston tx 77041 3 here is how an api worn sheave gauge will set in a new or unworn groove shown below. Dm size d d b l k m n j kg spc 2 groove pulleys spc21223020 212 4 3020 25 75 59. The v or progressive vgroove sheave the vgroove is the ultimate groove for traction. This measurement is the included angle of both sides of the groove. This is largely governed by the diameter of the pulley but can affect how deep in the groove your belt will ride.
Dm size d d b l k m n j kg spb 4 groove pulleys spb11241610 112 3 1610 14 42 82 25. Nominal dimensions of the four cross sections are given in table 1. Bk double groove finished bore sheaves for 5l or b belts bk sheaves are accurately machined from fine grained cast iron, statically balanced, painted and individually packaged. Vbelt pulleys with cylindrical hole are balanced on one level quality grade. Dimensions of vbelts and pulleys together with basic design data are covered in this manual. Other dimensions on request 26 optibelt rb ribbed belts, profi le pk lengths. It has a hub attached and the inside diameter is 58 in. All orders placed on this website are handled entirely by computers. Idler pulley any pulley used in a nondrive position that is intended to rotate freely and be driven by the belt. This manual does not apply to automotive and agricultural drives. The following table defiens industry standard vbelt sheave grooves. The following parameters are important when selecting vbelt pulleys. The distance across the center hole, or bore, of the.
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