China Best Sales High Precision Hypoid Spiral Bevel Gear Reducer with Spiral Bevel Gearbox Km Series Gearbox with Good quality

Product Description


Km Series Aluminium Alloy 7.5~300 Ratio 90 Degree Hypoid Gear Motor Vertical Hypoid Reduction Gearbox with Electric Motor


Product Parameters

Applicable Industries

Garment Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory

Gearing Arrangement


Output Torque


Input Speed


Output Speed




Brand Name


Product name

Hypoid gear reducer








Detailed Photos

Product Description

KPM-KPB series helical-hypoid gearboxes are the new-generation product with a compromise of advanced technology both at home and abroad.This product is widely used in textile, foodstuff, beverage,tobacco, logistics industrial fields,etc.
Main Features:
(1) Driven by hypoid gears, which has big ratios.
(2) Large output torque, high efficiency(up to 92%), energy saving and environmental protection.
(3) High quality aluminum alloy housing, light in weight and non-rusting.
(4) Smooth in running and low in noise, and can work long time in dreadful conditions.
(5) Good-looking appearance, durable service life and small volume.
(6) Suitable for all round installation, wide application and easy use.
(7) KPM series can replace NMRV worm gearbox; KPB series can replace CHINAMFG W series worm gearbox;
(8) Modular and multi-structure can meet the demands of various conditions.
 Main Material:
(1) Housing: aluminum alloy 
(2) Gear wheel: 20CrMnTiH1,carbonize & quencher heat treatment make the hardness of gears surface up to 56-62 HRC, retain carburization layers thickness between 0.3 and 0.5mm after precise grinding.


Gearbox Application



Company Profile




Packaging & Shipping




/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Transmission Parts
Function: Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout: Cycloidal
Hardness: Hardened Tooth Surface
Installation: Torque Arm Type
Step: Single-Step
US$ 80/Piece
1 Piece(Min.Order)

Request Sample

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 differ from other types of gears?

Spiral gears, also known as helical gears, have distinct differences compared to other types of gears. These differences primarily stem from the helical tooth arrangement in spiral gears. Here’s how spiral gears differ from other gear types:

  • Helical Tooth Arrangement: Spiral gears have teeth that are curved in a spiral pattern, forming a helix. This is different from straight-cut gears, which have teeth parallel to the gear axis, or bevel gears, which have teeth on conical surfaces. The helical tooth arrangement in spiral gears provides various advantages such as smoother operation, increased load capacity, and improved efficiency.
  • Gradual Tooth Engagement: Due to the helical tooth arrangement, spiral gears have a gradual tooth engagement as the gears rotate. This gradual contact reduces impact and noise during gear meshing, resulting in smoother and quieter operation compared to straight-cut gears.
  • Axial Thrust Compensation: Spiral gears can be designed with opposite helix angles on mating gears, which helps in canceling out the axial thrust generated during gear meshing. This feature eliminates the need for additional thrust bearings and simplifies the gear design, reducing complexity.
  • Load Distribution: The helical tooth arrangement in spiral gears allows the load to be distributed over multiple teeth. This enables spiral gears to handle higher torque transmission and carry heavier loads compared to straight-cut gears.
  • Efficiency: Spiral gears exhibit higher efficiency due to reduced sliding friction between the teeth. The helical tooth arrangement helps minimize sliding friction, resulting in lower power losses during gear operation.
  • Versatility: Spiral gears can be manufactured in various configurations, including spur, helical, and double helical designs. This versatility allows for their application in a wide range of machinery and systems, providing flexibility in gear design and usage.

These differences make spiral gears well-suited for applications that require smooth operation, high load capacity, and efficient power transmission. They are commonly used in gearboxes, automotive differentials, machine tools, and various industrial machinery.

In summary, spiral gears stand out from other gear types due to their helical tooth arrangement, resulting in smoother operation, increased load capacity, improved efficiency, and versatility.

China Best Sales High Precision Hypoid Spiral Bevel Gear Reducer with Spiral Bevel Gearbox Km Series Gearbox with Good qualityChina Best Sales High Precision Hypoid Spiral Bevel Gear Reducer with Spiral Bevel Gearbox Km Series Gearbox with Good quality
editor by CX 2024-03-26


Spiral Gears

As one of the leading spiral gear manufacturers, suppliers, and exporters of mechanical products, We offer spiral gear and many other products.

Please contact us for details.

Manufacturer supplier exporter of spiral gear.

Recent Posts