· The Spur Gear Advantage
· Spur gears, also referred to as directly cut gears, have several advantages over other styles of gears. Spur gears are simple to design and produce and are also more efficient than helical gears. Directly cut gears provide improved effectiveness because helical gears create more heat due to the fact that they have sliding contacts between tooth which creates axial thrust. When applications require simple, simple to assemble gears, spur gears may be the ideal equipment for you personally. Spur gears are also known because of their reliability and continuous velocity ratio.
· Spur gears can be found in the next sizes / capacities:
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Optimum Pitch Diameter / Max 30.0″
Diametral Pitch / From 3.0 to 180 degrees
Face Width / Max 13.0″
Cut Tooth / AGMA Q11
Available Spur Gear Materials
· Steel
· Tool steel
· Heat-treated steel
· Brass
· Bronze
· Copper
· Cast iron
· Fiber
· Plastic

· Spur gears are a very common type of gear and perhaps they are the most price effective type of gearing. They often have straight the teeth and transmit movement & power between parallel shafts. Spur gears are found in many products & industries including: Electronics, Structure equipment, Machine equipment, Conveyors and Material handling. They are usually not used in automotive applications because they can be noisy.
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Spur gears or straight-cut gears will be the simplest kind of gear. They contain a cylinder or disk with the teeth projecting radially. Though the teeth aren’t straight-sided (but usually of special type to achieve a constant drive ratio, mainly involute but less commonly cycloidal ), the edge of every tooth is straight and aligned parallel to the axis of rotation. These gears mesh together correctly only if suited to parallel shafts.[ No axial thrust is created by the tooth loads. Spur gears are excellent at moderate speeds but tend to end up being noisy at high speeds.
Spur gears will be the most easily visualized common gears that transmit motion between two parallel shafts. Because of their shape, they are categorized as a type of cylindrical gears. Because the tooth areas of the gears are parallel to the axes of the installed shafts, there is absolutely no thrust force generated in the axial direction. Also, because of the simple production, these gears can be made to a high degree of precision. However, spur gears have a disadvantage for the reason that they very easily make noise. In most cases, when two spur gears are in mesh, the apparatus with more the teeth is called the “equipment” and the main one with small number of the teeth is named the “pinion”.
As one of the many professional spur gear manufacturers and suppliers in China, we warmly welcome you to buy or wholesale mass spur gear manufactured in China here from our factory.
Spur gear tooth are manufactured by either involute profile or cycloidal profile. Most of the gears are manufactured by involute profile with 20° pressure angle. When two gears are in mesh at one instant there is a opportunity to mate involute portion with non-involute part of mating gear. This phenomenon is called “interference” and takes place when the amount of teeth on the smaller of the two meshing gears is less than a required minimum. In order to avoid interference we can have got undercutting , but this is simply not a suitable remedy as undercutting leads to weakening of tooth at its base. In this example Corrected gears are used. In corrected gears Cutter rack is usually shifted upwards or downwards.
Spur gears will be the most easily visualized common gears that transmit movement between two parallel shafts. Because of their shape, they are classified as a type of cylindrical gears. Because the tooth surfaces of the gears are parallel to the axes of the installed shafts, there is absolutely no thrust force generated in the axial path. Also, because of the ease of production, these gears can be made to a higher degree of precision. On the other hand, spur gears have a disadvantage in that they very easily make noise. In most cases, when two spur gears are in mesh, the apparatus with more tooth is named the “equipment” and the main one with small number of teeth is called the “pinion”.
The unit to point the sizes of spur gears is often stated, as specified by ISO, to be “module”. Recently, it is usual to set the pressure position to 20 degrees. In commercial machinery, it really is most common to use a part of an involute curve as the tooth profile.
Even though not really limited to spur gears, profile shifted gears are utilized when it is necessary to adjust the guts distance slightly or even to strengthen the equipment teeth. They are made by adjusting the distance between the gear cutting tool called the hobbing device and the gear in the production stage. When the change can be positive, the bending power of the gear increases, while a poor shift slightly reduces the center distance. The backlash may be the play between the tooth when two gears are meshed and is necessary for the even rotation of gears. When the backlash is definitely too big, it leads to improved vibration and noise as the backlash that is too little leads to tooth failure due to the lack of lubrication.
All Ever-power spur gears have got an involute tooth form. In other words, they are involute gears using area of the involute curve as their tooth forms. Looking generally, the involute form is the most wide-spread gear tooth form because of, among other reasons, the capability to absorb small middle distance errors, quickly made production equipment simplify manufacturing, heavy roots of one’s teeth make it solid, etc. Tooth shape is often referred to as a specification in drawing of a spur gear as indicated by the height of teeth. Furthermore to standard complete depth teeth, prolonged addendum and stub tooth profiles exist.
Ever-power’s spur gears, which are made to transmit motion and power between parallel shafts, are the most economical gears in the power transmission industry.
You can expect both 14 1/2° and 20° PA (pressure position), involute, and full-depth system gears. 20° PA is generally recognized as having a higher load carrying capacity; nevertheless, 14 1/2° PA gears are utilized extensively aswell. This is since the lower pressure position reduces modify in backlash because of center range variation and concentricity errors. The 14 1/2° PA also offers a higher get in touch with ratio for smoother, quieter procedure.
Ever-power spur gears can be found through our Guaranteed Same Time Shipment from the world class manufacturing center in Hangzhou, China. Many different gears with a number of bore sizes, keyways, and setscrews are routinely in stock, but if the particular bore/keyway/setscrew mixture needed is not easily available, our machining professionals can transform any non-hardened equipment and deliver it within 24 hours. Just ask!
We offer all sorts of spur gears including surface spur gears, metric spur gear, hubless spur hears, fairloc spur gears, plastic material spur gears, steel spur gears, injection molded spur gears.
· Transmits motion and power efficiently between parallel shafts.
· Our 20° PA spur gear includes a high load-carrying capacity for enhanced performance.
· The 14 1/2° PA spur gear provides smooth, quiet operation.
· Spur gears are manufactured in Delrin, nonmetallic, brass, metal, and cast iron components for maximum versatility.
· nonmetallic (phenolic – grade C) materials provides tranquil, corrosion resistant operation.
· Custom Spur Gears
· Ever-power customized spur gears & internal spur gears in a variety of designs and sizes. We specialize in spur gears & gear drives that are designed to meet exacting specifications and tolerances. We offer regular & metric sizes, and will make spur gears in a variety of materials. Special designs are available. Following AGMA specifications, Avon frequently exceeds these specifications to accommodate the intricacies of high precision gears. No specification, no detail is too complex for Avon.
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