Luoyang Yujie Industry&Trade Co., Ltd is one of the most experienced manufacturers and suppliers of custom steel herringbone gear in China. Please feel free to buy cheap custom steel herringbone gear for sale here from our factory. All customized products are with high quality and competitive price.
Products Description
Custom Steel Herringbone Gear is a type of gear that is a side-by-side arrangement of two helical gears of opposing hands. The side thrust of one half of a double helical gear is balanced by the side thrust of the other half, which implies that double helical gears may be employed in torque gearboxes without requiring a big thrust bearing. In heavy-duty machinery, double helical gears or herringbone gears are always employed.
A herringbone gear is a combination of double helical gears with two helices arranged on opposite sides of the hand. The teeth of the herringbone gears are arranged at an angle called the helix angle, with no gaps between the left and right helixes, appearing in the shape of the letter "V" These letters together form a pattern that resembles a fishbone structure.
Since this structure has more than two teeth meshing with each other at the same time, the advantage is that the power transmission is smooth.The angled teeth of the herringbone gear help generate axial force and heat that is proportional to the magnitude of the helical tangent. The angle between the helix and the axis of rotation is 45 degrees, however, larger helix angles provide higher speeds. The arrangement of the two teeth of the herringbone gear counteracts the thrust exerted on each other, giving the advantage of smooth operation even at higher speeds.
herringbone gear and pinion
applications
Large-diameter, large-module custom steel herringbone gears are suitable for the core transmission links of heavy equipment in mining, metallurgy, wind power, hydropower, and shipbuilding. They are mainly used in equipment such as mining mills, hoists, rolling mills, wind turbine main gearboxes, hydro turbine generator sets, and large marine propulsion gearboxes. These types of equipment are all under heavy-load conditions with low speed, high torque, and strong impact. Some of them also face high dust, high temperature, and harsh outdoor environments. Herringbone gears can offset axial forces and have a large meshing area. Combined with their large diameter and large module characteristics, they can meet the stringent transmission requirements of continuous and stable operation and wear resistance and fatigue resistance of the equipment.
Common materials
Cutom steel Herringbone gears commonly use alloy materials such as 42CrMo, 20CrNiMo, 20CrMnTi, 17CrNiMo6, and 20Cr2Ni4A because they are suitable for the low-speed, heavy-load, high-impact, and harsh environment transmission conditions of heavy equipment in mining, metallurgy, and other fields. After forging and heat treatment, these alloy materials can achieve the core properties of high surface hardness and wear resistance, and high core toughness and impact resistance. They can withstand ultra-high torque, resist corrosion from dust, high temperature and other working conditions, and meet the stringent requirements of long-term continuous and stable operation of equipment. For ultra-large models, the use of high-grade alloys can further improve fatigue resistance and service life.
machining processings of herringbone gear
Large-diameter, high-module herringbone gears are forged into blanks, which are then normalized to relieve stress. The blanks are rough and finish machined on heavy-duty CNC lathes to machine the reference surfaces and the initial spiral grooves of the herringbone teeth, ensuring dimensional accuracy.
The blanks are first tempered to obtain comprehensive mechanical properties, then the herringbone tooth shape is sequentially rough and finish milled using heavy-duty CNC equipment. Depending on the operating conditions, the tooth surfaces are hardened/carburized and nitrided for strengthening, followed by low-temperature tempering to relieve heat treatment stress.
After heat treatment, the teeth are precision ground/lapped to correct deformation and refine the reference surfaces. All indicators, including tooth profile accuracy, surface hardness, and diffusion depth, are tested, and internal flaw detection is performed to ensure compliance with usage requirements.
Competitive Advantages
☆Both large module and large diameter are available.
☆High precision, up to 0.05mm
☆Quality control and management of the whole production process, including ingot smelting, forging, heat treatment, machining, and a strictly final inspection before delivery.
☆Excellent product quality and service, competitive price, "in-time" delivery.
FAQ
Q: Are you trader or factory?
Q: What kind of service can you provide?
Q: Will weld inspection and paint thickness inspection be performed?
A: Yes. We also support third-party testing.
Q: Do you support factory inspection?
A: Anytime
Q: Besides manufacturing spare parts for large machinery, what else do you produce?
A: We also manufacture large CNC machine tools and perform equipment upgrades and retrofits.
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