China Professional OEM MB241981 Ratio 7/37 Spiral Bevel Gear for CZPT Pickup worm gear winch

Product Description

Product Description

Car Fitment Mitsubishi
OE No. MB241981
Speed Ratio 7/37
Type Differential Gear
Material 20CrMnTi/ 8620
Hardness HRC58-62
Treatment Carburizing,Hardening,
tempering,high frequency treatment,black coating,zincing,nickelage

 

Company Profile

 

HangZhou CHINAMFG Machinery is a professional manufacture of spiral bevel gear. The company has CNC milling machine, the GLEASON milling machine, rolling inspection machine, gear measuring center, a full set of metallographic analysis, inspection equipment and other related advanced equipment.
Our company owns gear measuring center equipped with advanced testing machines such as contourgraph, universal measuring microscope and full set netlaaographic analysis detector. According to various technical requirements and through procedures of sampling, special inspection and re-examination, multi-indexes of gears like observation, measurement and tracking can be completed.
With our high quality products, high credibility and trusty cooperation, aiming to be a highly specialized gear manufacturer of high level and all-directional service,we are looking CHINAMFG to your  business negotiation and our promising cooperation.

 

 

FAQ

Q1: Are your products standard? 
A: Our model is standard, if you have specific demand, pls tell us the details. 
Q2: What is you main categories? 
A: Commercial Vehicles like Isuzu, Nissan, Hino , Mitsubishi, Toyota, Suzuki,Mazda etc. Agricutural Machinery and Electric Storage. 
Q3: If we don’t find what we want on your website, what should we do? 
A: You can contact me directly by email for the descriptions and pictures of the products you need, we will check whether we have them. 
B: We develop new items every month, and some of them have not been uploaded to website in time. Or you can send us sample by express, we will develop this item for bulk purchasing. 
Q4: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance
Q5:Do you test all your goods before delivery?
Yes, we have 100% test before delivery

Application: Motor, Electric Cars, Motorcycle, Machinery, Agricultural Machinery
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Manufacturing Method: Cut Gear
Toothed Portion Shape: Curved Gear
Material: Cast Steel
Customization:
Available

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Customized Request

spiral gear

How do spiral gears contribute to reducing noise and vibration?

Spiral gears contribute significantly to reducing noise and vibration in gear systems. Their unique design and characteristics help minimize unwanted sound and vibrations. Here’s how spiral gears achieve noise and vibration reduction:

  • Gradual Tooth Engagement: Spiral gears have a helical tooth arrangement, which results in gradual tooth engagement as the gears mesh. Unlike spur gears with instantaneous full tooth contact, the helical teeth of spiral gears gradually come into contact, reducing the impact and shock during gear meshing. This gradual engagement helps to minimize noise and vibration.
  • Improved Contact Pattern: The helical tooth profile of spiral gears produces a favorable contact pattern between the teeth. The contact pattern is more evenly distributed across the tooth face compared to spur gears, which reduces stress concentration and potential noise generation. The improved contact pattern contributes to smoother and quieter gear operation.
  • Load Distribution: Spiral gears distribute the load over multiple teeth due to their helical shape. This load distribution helps to minimize localized stresses and reduces the risk of tooth breakage or pitting, which can contribute to noise and vibration. By spreading the load across a larger contact area, spiral gears ensure smoother and more stable gear operation.
  • Reduced Sliding Friction: The sliding friction between gear teeth can generate noise and vibration. Spiral gears, with their helical tooth profile, exhibit reduced sliding friction compared to spur gears. The sliding motion is distributed along the helical path, resulting in smoother tooth contact and reduced friction-induced noise and vibration.

Collectively, these factors—gradual tooth engagement, improved contact pattern, load distribution, and reduced sliding friction—contribute to the noise and vibration reduction achieved by spiral gears. This makes them particularly suitable for applications where quiet operation and minimal vibration are essential, such as precision machinery, automotive transmissions, and other noise-sensitive environments.

spiral gear

How do you calculate the gear ratio in a spiral gear system?

The gear ratio in a spiral gear system can be calculated by comparing the number of teeth on the driving gear (pinion) to the number of teeth on the driven gear (gear). The gear ratio represents the ratio of the angular velocity (speed) of the driving gear to the angular velocity of the driven gear. Here’s the formula to calculate the gear ratio:

Gear Ratio = Number of Teeth on Driven Gear / Number of Teeth on Driving Gear

For example, consider a spiral gear system where the driving gear (pinion) has 20 teeth, and the driven gear (gear) has 40 teeth. The gear ratio can be calculated as follows:

Gear Ratio = 40 / 20 = 2

In this example, the gear ratio is 2, which means the driven gear will rotate at half the speed of the driving gear. This calculation assumes that the gears have the same module (gear size) and that there are no additional gear stages in the system.

It’s important to note that the gear ratio determines the speed and torque relationship between the driving and driven gears. A gear ratio greater than 1 (e.g., 2, 3, etc.) indicates a reduction in speed and an increase in torque, while a gear ratio less than 1 (e.g., 0.5, 0.75, etc.) indicates an increase in speed and a reduction in torque.

When working with spiral gears, it’s essential to consider the helix angle and axial thrust in addition to the gear ratio to ensure proper gear design and performance.

spiral gear

How do spiral gears contribute to smoother and quieter gear engagement?

Spiral gears, also known as helical gears, offer several design features that contribute to smoother and quieter gear engagement compared to other gear types. Here’s how spiral gears achieve this:

  • Gradual Tooth Engagement: The helical tooth arrangement in spiral gears allows for gradual tooth engagement as the gears mesh. Unlike straight-cut gears, where the teeth make sudden contact, spiral gears have angled teeth that come into contact gradually. This gradual engagement helps to reduce impact and noise during gear meshing.
  • Increased Contact Ratio: The helical tooth design of spiral gears provides a higher contact ratio compared to straight-cut gears. The contact ratio refers to the number of teeth in mesh at any given time. With a higher contact ratio, the load is distributed over multiple teeth, resulting in reduced stress on individual teeth and smoother gear operation.
  • Reduced Sliding Friction: The helical tooth arrangement in spiral gears helps minimize sliding friction between the teeth. As the teeth mesh, the angled surfaces slide against each other instead of making direct contact. This sliding action reduces friction and wear, leading to smoother operation and reduced noise levels.
  • Efficient Load Distribution: Spiral gears distribute the load over multiple teeth due to their helical tooth arrangement. This distribution of load helps to evenly distribute the forces and minimize localized stresses. By spreading the load, spiral gears can handle higher torque transmission and carry heavier loads, resulting in smoother and more reliable gear engagement.
  • Axial Thrust Compensation: Spiral gears can be designed with opposite helix angles on mating gears. This configuration helps cancel out the axial thrust generated during gear meshing. By eliminating or reducing the axial thrust, spiral gears reduce the need for additional thrust bearings and simplify the gear design, contributing to smoother operation.

These design features of spiral gears, including gradual tooth engagement, increased contact ratio, reduced sliding friction, efficient load distribution, and axial thrust compensation, work together to provide smoother and quieter gear engagement. These characteristics make spiral gears ideal for applications where noise reduction, smooth operation, and reliable gear meshing are essential.

China Professional OEM MB241981 Ratio 7/37 Spiral Bevel Gear for CZPT Pickup worm gear winchChina Professional OEM MB241981 Ratio 7/37 Spiral Bevel Gear for CZPT Pickup worm gear winch
editor by CX 2023-10-23

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