Product Description

After Sales Service


Disk output angle spur gear planetary reducer
PLANETX planetary reduce

Disc output reducer is widely used in industrial products due to its small size, light weight, large torque, wide speed ratio range, high rigidity, high precision, high transmission efficiency, maintenance free and other characteristics.
The planetary reducer structure is composed of a sun gear and a planet gear to form an external mesh, and a planet gear and an internal gear ring to form an internal mesh, so that the planet gear can realize revolution while realizing self rotation and maximum transmission of guarantee force; The minimum speed ratio of single-stage reduction is 3, and the maximum speed ratio is generally not more than 10. Common reduction ratios are 3, 4, 5, 6, 7, 8, and 10. The number of reducer stages is generally not more than 3, and the speed ratio is not more than 1.
Most planetary reducers are used with servo motors to reduce speed, increase torque, increase inertia, and ensure return accuracy (the higher the return accuracy, the higher the price). The maximum rated input speed of planetary reducers can reach 12000 rpm (depending on the size of the reducer itself, the larger the reducer, the smaller the rated input speed), and the operating temperature is generally between – 40 ºC and 120 ºC.

Application description of reducer

Drawing reference








    Rated output torque


16.5 63 3 1-stages
26 90 4
28 100 5
20 68 7
12.5 43 10
19.5 75 9
31.5 110 12
31.5 110 16
31.5 110 20
33.5 120 25
31.5 110 28 2-stages
33.5 120 35
31.5 110 40
33.5 120 50
24 81 70
37.5 130 80
37.5 130 100
40 145 125
37.5 130 140
40 145 175
37.5 130 200
40 145 250
37.5 130 280 3-stages
40 145 350
37.5 130 400
40 145 500
28 95 700
18.8 62 1000
Nm 2/2*Nominal torqute

Backlash arcmin <4 <4 P1 1-stages
<8 <8 P2
<8 <8 P1 2-stages
<12 <12 P2  
<10 <10 P1 3-stages
<14 <14 P2
NO-load torque NM 0.18 0.6   1-stages 
0.17 0.55   2-stegas
0.16 0.5   3-stegas

Q: How to get a quick quote
A: Please provide the following information when contacting us

  1. Motor brand
  2. Motor model
  3. Motor dimension drawing
  4. What is the gear ratio

Q: How long is your delivery date
A: We all install it now, but it takes 7-15 days if it is not non-standard. Non standard 15-30 days, depending on the specific situation
Q:Do you provide samples, free or extra
A: A: You can reserve 1 first, and purchase it on demand
Corporate group building

1.How do we know the product quality?
A1.We suggest you order samples. In addition, you can send an email to us for detailed photos to check if you can’t get enough information in the product page

2.Is this your final price? Can I have a discount?A2.Our price is ex factory.
A2.If you want a large quantity, we can give you a discount
3.Can we visit your factory?
A3.Yes, a warm 

To participate in the exhibitionelcome. Floor 3, Building 1, No. 12, Xihu (West Lake) Dis. Road, Wanjiang District, HangZhou City, ZheJiang Province

Warranty: 1 Year
Classification: Gear Parts
Processing Type: Metal Processing


Customized Request

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

spur gear

Can spur gears be used in automotive applications?

Yes, spur gears can be used in automotive applications. Here’s a detailed explanation:

Spur gears are one of the simplest and most commonly used types of gears. They consist of cylindrical teeth that are parallel to the gear axis and mesh with each other to transmit power and motion. While other gear types like helical gears or bevel gears are often preferred in certain automotive applications, spur gears still find their place in various automotive systems and components.

1. Transmissions:

Spur gears are commonly found in manual transmissions, especially in lower gears. They are used to achieve a direct and efficient power transfer between the engine and the wheels. Spur gears in transmissions are designed to handle high torque loads and provide reliable performance.

2. Differential:

In automotive differentials, which distribute power between the wheels while allowing them to rotate at different speeds, spur gears are often employed. They are used in the differential gear train to transfer torque from the driveshaft to the wheels. The simplicity and robustness of spur gears make them suitable for this application.

3. Starter Motors:

Spur gears are commonly used in starter motors to crank the engine when starting a vehicle. They provide high torque and efficient power transmission to rotate the engine’s crankshaft and initiate the combustion process. Starter motor spur gears are designed to handle the initial load and engage smoothly with the engine’s flywheel.

4. Timing Systems:

In automotive timing systems, where precise synchronization of engine components is crucial, spur gears can be used. They are employed in timing belts or chains to drive the camshafts, ensuring proper valve timing and engine performance. Spur gears in timing systems contribute to accurate and reliable engine operation.

5. Accessories and Auxiliary Components:

Spur gears are also utilized in various automotive accessories and auxiliary components. They can be found in power window mechanisms, windshield wipers, power steering systems, and other mechanisms that require controlled and synchronized motion. Spur gears provide cost-effective and efficient power transmission for these applications.

It’s important to note that while spur gears have their advantages, they also have certain limitations. They can generate more noise and vibration compared to gears with helical or bevel tooth profiles. Additionally, spur gears are not as suitable for high-speed or high-torque applications as other gear types.

Overall, spur gears have a significant presence in automotive applications, particularly in manual transmissions, differentials, starter motors, timing systems, and various auxiliary components. Their simplicity, reliability, and cost-effectiveness make them a viable choice for specific automotive gear applications.

spur gear

What is the lifespan of a typical spur gear?

The lifespan of a typical spur gear can vary significantly depending on several factors. Here’s a detailed explanation:

The lifespan of a spur gear is influenced by various factors, including:

  • Operating Conditions: The conditions under which the spur gear operates greatly impact its lifespan. Factors such as the magnitude and frequency of the applied loads, operating temperature, speed, and lubrication quality play a significant role. Gears operating under heavy loads, high speeds, or harsh environments may experience higher wear and fatigue, potentially reducing their lifespan.
  • Material Selection: The material used for constructing the spur gear affects its durability and lifespan. Spur gears are commonly made from materials such as steel, cast iron, bronze, or polymer composites. The specific material properties, including hardness, strength, and resistance to wear and corrosion, influence the gear’s ability to withstand the operating conditions and determine its lifespan.
  • Quality of Manufacturing: The quality of manufacturing processes and techniques employed during the production of the spur gear can impact its lifespan. Gears manufactured with precision, accurate tooth profiles, and proper heat treatment are more likely to have longer lifespans compared to those with manufacturing defects or poor quality control.
  • Lubrication and Maintenance: Proper lubrication is crucial for reducing friction, wear, and heat generation in spur gears. Regular maintenance practices, including lubricant replacement, gear inspections, and addressing any issues promptly, can significantly extend the lifespan of the gears. Inadequate lubrication or neglecting maintenance can lead to premature wear and failure.
  • Load and Stress Distribution: The design and configuration of the gear system affect the load and stress distribution on the spur gears. Proper gear design, including tooth profile, number of teeth, and gear arrangement, helps ensure even load distribution and minimizes localized stress concentrations. Well-designed supporting components, such as bearings and shafts, also contribute to the overall lifespan of the gear system.

It is challenging to provide a specific lifespan for a typical spur gear since it depends on the aforementioned factors and the specific application. Spur gears can have lifespans ranging from several thousand to millions of operating cycles. Industrial gear systems often undergo regular inspections and maintenance, including gear replacement when necessary, to ensure safe and reliable operation.

It’s important to note that gear lifespan can be extended through proper care, maintenance, and adherence to recommended operating parameters. Regular inspections, monitoring of gear performance, and addressing any signs of wear or damage promptly can help maximize the lifespan of spur gears.

When assessing the lifespan of spur gears for a particular application, it is advisable to consult manufacturers, industry standards, and experts with expertise in gear design and maintenance for accurate estimations and recommendations.

spur gear

Can you explain the concept of straight-cut teeth in spur gears?

The concept of straight-cut teeth is fundamental to understanding the design and operation of spur gears. Straight-cut teeth, also known as straight teeth or parallel teeth, refer to the shape and arrangement of the teeth on a spur gear. Here’s a detailed explanation of the concept of straight-cut teeth in spur gears:

Spur gears have teeth that are cut straight and parallel to the gear axis. Each tooth has a uniform width and thickness, and the tooth profile is a straight line. The teeth are evenly spaced around the circumference of the gear, allowing them to mesh with other spur gears.

The key characteristics and concepts related to straight-cut teeth in spur gears include:

  • Tooth Profile: The tooth profile of a spur gear with straight-cut teeth is a straight line that extends radially from the gear’s pitch circle. The profile is perpendicular to the gear axis and remains constant throughout the tooth’s height.
  • Pitch Circle: The pitch circle is an imaginary circle that represents the theoretical point of contact between two meshing gears. For a spur gear, the pitch circle is located midway between the gear’s base circle (the bottom of the tooth profile) and the gear’s addendum circle (the top of the tooth profile).
  • Pressure Angle: The pressure angle is the angle between the line tangent to the tooth profile at the pitch point and a line perpendicular to the gear axis. It determines the force distribution between the meshing teeth and affects the gear’s load-bearing capacity and efficiency. Common pressure angles for spur gears are 20 degrees and 14.5 degrees.
  • Meshing: Straight-cut teeth in spur gears mesh directly with each other. The teeth engage and disengage along a line contact, creating a point or line contact between the contacting surfaces. This direct meshing arrangement allows for efficient power transmission and motion transfer.
  • Advantages and Limitations: Straight-cut teeth offer several advantages in spur gears. They are relatively simple to manufacture, resulting in cost-effective production. Moreover, they provide efficient power transmission and are suitable for moderate to high-speed applications. However, straight-cut teeth can generate more noise and vibration compared to certain other tooth profiles, and they may experience higher stress concentrations under heavy loads.

In summary, straight-cut teeth in spur gears refer to the straight and parallel arrangement of the gear’s teeth. The teeth have a uniform profile with a constant width and thickness. Understanding the concept of straight-cut teeth is essential for designing and analyzing spur gears, considering factors such as tooth profile, pitch circle, pressure angle, meshing characteristics, and the trade-offs between simplicity, efficiency, and noise considerations.

China wholesaler Disk Output Angle Spur Gear Planetary Reducer helical bevel gearChina wholesaler Disk Output Angle Spur Gear Planetary Reducer helical bevel gear
editor by CX 2023-10-31