Product Description
LYMC Supply Customized Professional Machining Steel Spur Gear For High Industrial Slew Gear
There are many types of gears such as spur gears, helical gears, bevel gears, worm gears, gear rack, etc. These can be broadly classified by looking at the positions of axes such as parallel shafts, intersecting shafts and non-intersecting shafts.
It is necessary to accurately understand the differences among gear types to accomplish necessary force transmission in mechanical designs. Even after choosing the general type, it is important to consider factors such as: dimensions (module, number of teeth, helix angle, face width, etc.), standard of precision grade (ISO, AGMA, DIN), need for teeth grinding and/or heat treating, allowable torque and efficiency, etc.
Spur Gear
Gears having cylindrical pitch surfaces are called cylindrical gears. Spur gears belong to the parallel shaft gear group and are cylindrical gears with a tooth line which is straight and parallel to the shaft. Spur gears are the most widely used gears that can achieve high accuracy with relatively easy production processes. They have the characteristic of having no load in the axial direction (thrust load). The larger of the meshing pair is called the gear and smaller is called the pinion.
Helical Gear
Helical gears are used with parallel shafts similar to spur gears and are cylindrical gears with winding tooth lines. They have better teeth meshing than spur gears and have superior quietness and can transmit higher loads, making them suitable for high speed applications. When using helical gears, they create thrust force in the axial direction, necessitating the use of thrust bearings. Helical gears come with right hand and left hand twist requiring opposite hand gears for a meshing pair.
Gear Rack
Same sized and shaped teeth cut at equal distances along a flat surface or a straight rod is called a gear rack. A gear rack is a cylindrical gear with the radius of the pitch cylinder being infinite. By meshing with a cylindrical gear pinion, it converts rotational motion into linear motion. Gear racks can be broadly divided into straight tooth racks and helical tooth racks, but both have straight tooth lines. By machining the ends of gear racks, it is possible to connect gear racks end to end.
Bevel Gear
Bevel gears have a cone shaped appearance and are used to transmit force between 2 shafts which intersect at 1 point (intersecting shafts). A bevel gear has a cone as its pitch surface and its teeth are cut along the cone. Kinds of bevel gears include straight bevel gears, helical bevel gears, spiral bevel gears, miter gears, angular bevel gears, CHINAMFG gears, zerol bevel gears and hypoid gears.
Screw Gear
Screw gears are a pair of same hand helical gears with the twist angle of 45° on non-parallel, non-intersecting shafts. Because the tooth contact is a point, their load carrying capacity is low and they are not suitable for large power transmission. Since power is transmitted by the sliding of the tooth surfaces, it is necessary to pay attention to lubrication when using screw gears.
Worm Gear
A screw shape cut on a shaft is the worm, the mating gear is the worm wheel, and together on non-intersecting shafts is called a worm gear. Worms and worm wheels are not limited to cylindrical shapes. There is the hour-glass type which can increase the contact ratio, but production becomes more difficult. Due to the sliding contact of the gear surfaces, it is necessary to reduce friction. For this reason, generally a hard material is used for the worm, and a soft material is used for worm wheel. Even though the efficiency is low due to the sliding contact, the rotation is smooth and quiet. When the lead angle of the worm is small, it creates a self-locking feature.
Internal gear
Internal gears have teeth cut on the inside of cylinders or cones and are paired with external gears. The main use of internal gears are for planetary gear drives and gear type shaft couplings. There are limitations in the number of teeth differences between internal and external gears due to involute interference, trochoid interference and trimming problems. The rotational directions of the internal and external gears in mesh are the same while they are opposite when 2 external gears are in mesh.
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Product name |
Spur Gear & Helical Gear & Gear Shaft |
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Materials Available |
Stainless Steel, Carbon Steel, Brass, Bronze, Iron, Aluminum Alloy etc |
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Heat Treatment |
Quenching & Tempering, Carburizing & Quenching, High-frequency Hardening, Carbonitriding…… |
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Surface Treatment |
Carburizing and Quenching,Tempering ,Tooth suface high quenching Hardening,Tempering |
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BORE |
Finished bore, Pilot Bore, Special request |
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Processing Method |
Molding, Shaving, Hobbing, Drilling, Tapping, Reaming, Manual Chamfering, Grinding etc |
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Pressure Angle |
20 Degree |
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Hardness |
55- 60HRC |
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Size |
Customer Drawings & ISO standard |
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Package |
Wooden Case/Container and pallet, or made-to-order |
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Certificate |
ISO9001:2008 |
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Machining Process |
Gear Hobbing, Gear Milling, Gear Shaping, Gear Broaching, Gear Shaving, Gear Grinding and Gear Lapping |
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Applications |
Toy, Automotive, instrument, electrical equipment, household appliances, furniture, mechanical equipment,daily living equipment, |
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Advantages |
1. Produce strictly in accordance with ANSI or DIN standard dimension |
Product Process
Application:
About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
Our Service:
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
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| Application: | Motor, Machinery, Marine, Agricultural Machinery, Mining, Petroleum, Automatic,Excavator,Crane, |
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| Hardness: | Hardened Tooth Surface |
| Gear Position: | External Gear |
| Toothed Portion Shape: | Helical Bevel Gear |
| Material: | Stainless Steel |
| Type: | Non-Circular Gear |
| Customization: |
Available
| Customized Request |
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Can you provide examples of machinery that use worm gears?
Worm gears are utilized in various machinery and mechanical systems where precise motion control, high gear reduction ratios, and self-locking capabilities are required. Here are some examples of machinery that commonly use worm gears:
- Elevators: Worm gears are commonly employed in elevator systems to control the vertical movement of the elevator car. The high gear reduction ratio provided by worm gears allows for smooth and controlled lifting and lowering of heavy loads.
- Conveyor systems: Worm gears are used in conveyor systems to drive the movement of belts or chains. The self-locking nature of worm gears helps prevent the conveyor from back-driving when the power is turned off, ensuring that the materials or products being transported stay in place.
- Automotive applications: Worm gears can be found in automotive steering systems. They are often used in the steering gearboxes to convert the rotational motion of the steering wheel into lateral movement of the vehicle’s wheels. Worm gears provide mechanical advantage and precise control for steering operations.
- Milling machines: Worm gears are utilized in milling machines to control the movement of the worktable or the spindle. They offer high torque transmission and accurate positioning, facilitating precise cutting and shaping of materials during milling operations.
- Lifts and hoists: Worm gears are commonly employed in lifting and hoisting equipment, such as cranes and winches. Their high gear reduction ratio allows for the lifting of heavy loads with minimal effort, while the self-locking property prevents the load from descending unintentionally.
- Rotary actuators: Worm gears are used in rotary actuators to convert linear motion into rotary motion. They are employed in various applications, including valve actuators, robotic arms, and indexing mechanisms, where controlled and precise rotational movement is required.
- Packaging machinery: Worm gears find application in packaging machinery, such as filling machines and capping machines. They assist in controlling the movement of conveyor belts, rotating discs, or cam mechanisms, enabling accurate and synchronized packaging operations.
- Printing presses: Worm gears are utilized in printing presses to control the paper feed and the movement of the printing plates. They provide precise and consistent motion, ensuring accurate registration and alignment of the printed images.
These are just a few examples, and worm gears can be found in many other applications, including machine tools, textile machinery, food processing equipment, and more. The unique characteristics of worm gears make them suitable for various industries where motion control, high torque transmission, and self-locking capabilities are essential.
Can worm gears be used in heavy-duty machinery and equipment?
Yes, worm gears can be used in heavy-duty machinery and equipment. Here’s a detailed explanation of their suitability for such applications:
1. High torque transmission: One of the key advantages of worm gears is their ability to transmit high torque. The unique design of the worm and worm wheel allows for efficient torque generation and power transmission. This makes worm gears well-suited for heavy-duty applications that require the transfer of substantial rotational forces.
2. Compact size: Worm gears offer a compact and space-saving solution for heavy-duty machinery. Their compact design allows for the transmission of high torque in a relatively small package. This is particularly advantageous in applications where space constraints or compact design requirements are present.
3. Self-locking feature: Worm gears exhibit a self-locking characteristic, meaning that the worm can prevent the back-driving of the gear system. This feature is beneficial in heavy-duty machinery where it is essential to maintain a fixed position or prevent the system from reversing under load. The self-locking capability of worm gears provides stability and safety in various heavy-duty applications.
4. High gear ratios: Worm gears can achieve high gear ratios, which is advantageous in heavy-duty machinery that requires precise speed reduction. The high gear ratios allow for fine control of rotational speed and torque output, enabling the gear system to match the requirements of heavy loads and demanding operating conditions.
5. Durable construction: Worm gears are typically manufactured using robust materials such as alloy steels, cast iron, or bronze. These materials offer excellent strength, wear resistance, and durability, making worm gears capable of withstanding the heavy loads and harsh operating environments encountered in heavy-duty machinery.
6. Overload protection: The unique design of worm gears provides inherent overload protection. When the load exceeds the gear’s capacity, the sliding action between the worm and worm wheel causes a high frictional force, limiting the torque transmission and preventing damage to the gear system. This overload protection feature is valuable in heavy-duty machinery where sudden load spikes or unexpected overloads can occur.
7. Wide range of applications: Worm gears find applications in various heavy-duty machinery and equipment across different industries. Some examples include cranes, winches, elevators, mining machinery, construction equipment, rolling mills, heavy-duty conveyors, and marine propulsion systems. The versatility of worm gears makes them suitable for a wide range of heavy-duty applications.
It is important to note that while worm gears offer several advantages for heavy-duty machinery, there are certain considerations to keep in mind. These include proper lubrication to minimize friction and wear, adequate cooling to manage heat generation, proper alignment to ensure efficient power transmission, and regular maintenance to inspect for signs of wear or damage. By addressing these factors, worm gears can reliably and effectively meet the demands of heavy-duty machinery and equipment.
How do you calculate the gear ratio of a worm gear?
Calculating the gear ratio of a worm gear involves determining the number of teeth on the worm wheel and the pitch diameter of both the worm and worm wheel. Here’s the step-by-step process:
- Determine the number of teeth on the worm wheel (Zworm wheel). This information can usually be obtained from the gear specifications or by physically counting the teeth.
- Measure or determine the pitch diameter of the worm (Dworm) and the worm wheel (Dworm wheel). The pitch diameter is the diameter of the reference circle that corresponds to the pitch of the gear. It can be measured directly or calculated using the formula: Dpitch = (Z / P), where Z is the number of teeth and P is the circular pitch (the distance between corresponding points on adjacent teeth).
- Calculate the gear ratio (GR) using the following formula: GR = (Zworm wheel / Zworm) * (Dworm wheel / Dworm).
The gear ratio represents the speed reduction and torque multiplication provided by the worm gear system. A higher gear ratio indicates a greater reduction in speed and higher torque output, while a lower gear ratio results in less speed reduction and lower torque output.
It’s worth noting that in worm gear systems, the gear ratio is also influenced by the helix angle and lead angle of the worm. These angles determine the rate of rotation and axial movement per revolution of the worm. Therefore, when selecting a worm gear, it’s important to consider not only the gear ratio but also the specific design parameters and performance characteristics of the worm and worm wheel.
editor by Dream 2024-05-07