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China factory Chinese Marine Gear Box 300 Series Reduction Gearbox for Boat Engine manufacturer

Product Description

Product Description

 

Application

Marine Gearbox D300A is suitable for fishing, tug, engineering and transport boats.
 

 

Description

Marine Gearbox D300A possesses functions of speed reduction, ahead and astern clutching and bearing propeller thrust. It is designed of vertically offset and one-stage transmission, featuring in small in volume, large in ratio, light in weight and easy in dismantle & reassemble and maintain.

 

Main Data
 

Input speed

1000-2500r/min

Reduction ratio

4.00

Trans. capacity

0.257kw/r/min

4.48

0.243kw/r/min

5.05

0.221kw/r/min

5.52,5.90

0.184kw/r/min

6.56,7.06

0.147kw/r/min

7.63

0.125kw/r/min

Control way

Push-and-pull flexible shaft, electrically, pneumatically

Rated thrust

60KN

Center distance

355mm

L×W×H

786×980×1041mm

Net weight

940kg

Flywheel

12V135,SAE18,16,14

CHINAMFG housing

12V135,SAE0,1

 

 

ADVANCE D300A – 4:1

MEDIUM/HEAVY DUTY GEARBOX

Reference number A-D300A-4
Brand Advance
Model D300A
Ratio 4:1
Power 630 HP @ 1800 RPM
Max. Power 805 HP @ 2300 RPM
RPM Range 1000-2300
Rated propeller thrust 60 kn
N/n 0,35 hp/rpm

FEATURES & OPTIONS

Sae housing Without/sae-0/sae-1
Controls Mechanical/ electrical
Pto Available
Note If using flexible couping, rate will rise 8%
Coupling size 18 /16 /14 inch
Coupling type Rubber block drive, with alu. ring/(high) flexible coupling

DIMENSIONS

Vertical offset 355 mm
LxWxH 786x920x1040 mm
Net. weight 940 kg

AVAILABLE ARRANGEMENTS

Ratio 4,48:1 4:1 5,05:1 5,52:1 5,9:1 6,56:1 7,06:1 7,63:1
Rate 0,33 hp/rpm 0,35 hp/rpm 0,30 hp/rpm 0,25 hp/rpm 0,20 hp/rpm 0,17 hp/rpm

Marine Propeller

 

 

Our Service

 

1) Pre-Sales Service

* Inquiry and consulting support. 

* Sample testing support. 

* View our Factory.

2) After-Sales Service

* Training how to instal the machine, training how to use the machine. 

* Engineers available to service machinery overseas.

   

 

 

Company Profile

Our Company

We can provide:
WEICHAI
Sales of Chinese marine engines and gearboxes, generator sets, pump units, providing modification, upgrades, consulting services

Products China marine engine parts and engineering machinery parts. Products include: CHINAMFG HOWO, CHINAMFG Power,   SHXIHU (WEST LAKE) DIS.I, service
Provide cargo warehousing, packaging, transportation and export agency services
Agency procurement, inspection and inspection agency.

HangZhou CHINAMFG power Co., Ltd
Contaction Person: ceci lee
 

 

 

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Application: Motor, Marine
Function: Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase
Layout: Cycloidal
Customization:
Available

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Customized Request

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Shipping Cost:

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Initial Payment



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

worm gearbox

Can a Worm Gearbox be Used for High-Speed Applications?

Worm gearboxes are generally not recommended for high-speed applications due to their inherent design characteristics. Here’s why:

  • Efficiency: Worm gearboxes tend to have lower efficiency compared to other gearbox types, which means they can generate more heat and experience more energy loss at high speeds.
  • Heat Generation: The sliding contact between the worm and worm wheel in a worm gearbox can lead to significant friction and heat generation, especially at high speeds. This heat can cause thermal expansion, affecting the gearbox’s performance and longevity.
  • Wear and Noise: High speeds can exacerbate wear and noise issues in worm gearboxes. Increased friction and wear can lead to faster degradation of components, resulting in reduced lifespan and increased maintenance needs.
  • Backlash: Worm gearboxes may have higher backlash compared to other gearbox types, which can impact precision and accuracy in high-speed applications.

While worm gearboxes are more commonly used in applications requiring high torque and moderate speeds, they may not be the best choice for high-speed scenarios. If high-speed operation is a requirement, other gearbox types such as helical, spur, or planetary gearboxes are often better suited due to their higher efficiency, lower heat generation, and reduced wear at elevated speeds.

worm gearbox

Energy Efficiency of a Worm Gearbox: What to Expect

The energy efficiency of a worm gearbox is an important factor to consider when evaluating its performance. Here’s what you can expect in terms of energy efficiency:

  • Typical Efficiency Range: Worm gearboxes are known for their compact size and high gear reduction capabilities, but they can exhibit lower energy efficiency compared to other types of gearboxes. The efficiency of a worm gearbox typically falls in the range of 50% to 90%, depending on various factors such as design, manufacturing quality, lubrication, and load conditions.
  • Inherent Losses: Worm gearboxes inherently involve sliding contact between the worm and worm wheel. This sliding contact generates friction, leading to energy losses in the form of heat. The sliding action also contributes to lower efficiency when compared to gearboxes with rolling contact.
  • Helical-Worm Design: Some manufacturers offer helical-worm gearbox designs that combine elements of helical and worm gearing. These designs aim to improve efficiency by incorporating helical gears in the reduction stage, which can lead to higher efficiency compared to traditional worm gearboxes.
  • Lubrication: Proper lubrication plays a significant role in minimizing friction and improving energy efficiency. Using high-quality lubricants and ensuring the gearbox is adequately lubricated can help reduce losses due to friction.
  • Application Considerations: While worm gearboxes might have lower energy efficiency compared to other types of gearboxes, they still offer advantages in terms of compactness, high torque transmission, and simplicity. Therefore, the decision to use a worm gearbox should consider the specific requirements of the application, including the trade-off between energy efficiency and other performance factors.

When selecting a worm gearbox, it’s essential to consider the trade-offs between energy efficiency, torque transmission, gearbox size, and the specific needs of the application. Regular maintenance, proper lubrication, and selecting a well-designed gearbox can contribute to achieving the best possible energy efficiency within the limitations of worm gearbox technology.

worm gearbox

Types of Worm Gear Configurations and Their Uses

Worm gear configurations vary based on the arrangement of the worm and the gear it engages with. Here are common types and their applications:

  • Single Enveloping Worm Gear: This configuration offers high torque transmission and efficiency. It’s used in heavy-duty applications like mining equipment and industrial machinery.
  • Double Enveloping Worm Gear: With increased contact area, this type provides higher load capacity and improved efficiency. It’s used in aerospace applications, robotics, and precision machinery.
  • Non-Throated Worm Gear: This type has a cylindrical worm without a throat. It’s suitable for applications requiring precise motion control, such as CNC machines and robotics.
  • Throated Worm Gear: Featuring a throat in the worm, this configuration offers smooth engagement and higher load capacity. It’s used in conveyors, elevators, and automotive applications.
  • Non-Modular Worm Gear: In this design, the worm and gear are a matched set, resulting in better meshing and efficiency. It’s utilized in various industries where customization is essential.
  • Modular Worm Gear: This type allows interchangeability of worm and gear components, providing flexibility in design and maintenance. It’s commonly used in conveyors, mixers, and material handling systems.

Selecting the appropriate worm gear configuration depends on factors such as load capacity, efficiency, precision, and application requirements. Consulting gearbox experts can help determine the best configuration for your specific needs.

China factory Chinese Marine Gear Box 300 Series Reduction Gearbox for Boat Engine   manufacturer China factory Chinese Marine Gear Box 300 Series Reduction Gearbox for Boat Engine   manufacturer
editor by CX 2024-03-29