China wholesaler Zlyj420 Transmission Gearbox for Extruder Single Screws gearbox drive shaft

Product Description

Product Description

ZLYJ series Reduction Gearbox (speed reducer) is a transmission part for most single screw extrusion line, wihch also possesses high precision hard gear surface and thrust block designed. Designed with standard ZBJ19009-88, it combines well with most of machines from different suppliers. Also the gear and axis parts are made of high strength alloy steel with surface hardness HRC54~62. In the front end of hollow input axis there is large specification thrust bearing that will bear axial thrust force while the screw is working

>Applied Circumstance
1. All kind of extrusion & blowing machinery
2. High speed shaft rotation Speed <1500RPM
3. Working Environment Temp. -40~45°C, with temperature below 0°C, should pre-heat lubrication oil to above 0°C

>Major Technical Index
1. Output Speed: 16-100 RPM
2. Output Torque: Max.4300 Nm
3. Motor Power: 5.5-200 Kw

>Selection of Gearbox
1. Select speed ratio
e.g. input speed n1=1000rpm, output speed n2=70rpm, ratio i=n1/n2=14.28, should select ratio 14
2. Select model type according to input power
e.g. input power P=26kw, after checking form, 29kw>26kw, most ecomonic should be ZLYJ200
3. Select assemble type
as per actual use, select horizontal or vertical type
4. Calculate axial thrust Fa=π*Ds²*Ps/(4*1000)
e.g. Screw diameter Ds=75mm, Screw pressure Ps=26MPa
187kN>114.8kN, ZLYJ200 can bear the axial thrust and economic to select
5. Confirm connection size
6. Confirm cooling type

Parameters Concerned

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Standard: DIN, GB, JIS
Technics: Forging
Feature: Recycle
Material: Metal
Gearing Arrangement: Helical
Input Speed: 600-1500rpm
US$ 2000/Set
1 Set(Min.Order)

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helical gearbox

Types of Helical Gear Arrangements

Yes, there are different types of helical gear arrangements available to suit various applications and requirements. Some of the common helical gear arrangements include:

Parallel Shaft Arrangement: In this arrangement, the axes of the driving and driven shafts are parallel to each other. It is the most straightforward configuration and is often used in applications where space is not a constraint, and the gearboxes can be placed side by side.

Right-Angle Shaft Arrangement: In a right-angle arrangement, the driving and driven shafts are positioned at a 90-degree angle to each other. This arrangement is space-saving and is commonly used in applications where the layout requires a change in direction of the power transmission.

Double Helical Gear Arrangement (Herringbone Gears): Double helical gears consist of two sets of helical teeth facing each other. This arrangement helps to cancel out axial forces and reduces the net thrust load on bearings. It is often used in heavy-duty applications to minimize wear and vibration.

Crossed Helical Gear Arrangement (Screw Gears): In this configuration, the axes of the driving and driven shafts are neither parallel nor intersecting. It is suitable for applications requiring non-parallel and non-intersecting shafts.

The choice of helical gear arrangement depends on factors such as available space, power transmission requirements, and the desired layout of the machinery or equipment. Each arrangement has its advantages and disadvantages, and selecting the appropriate one is crucial for achieving optimal performance and efficiency.

helical gearbox

Safety Precautions for Operating Machinery with Helical Gear Systems

When operating machinery equipped with helical gear systems, it’s crucial to prioritize safety to prevent accidents and ensure the well-being of operators and equipment. Here are the key safety precautions to consider:

  • Training and Familiarity: Operators should receive proper training on the equipment’s operation, including the helical gear system. They should be familiar with the controls, emergency procedures, and potential hazards.
  • Protective Gear: Operators should wear appropriate personal protective equipment (PPE), such as gloves, safety glasses, helmets, and ear protection, depending on the application’s requirements.
  • Lockout/Tagout: Before performing maintenance or repairs, follow lockout/tagout procedures to isolate the machinery from its power source and prevent accidental startup.
  • Regular Inspections: Conduct routine inspections of the helical gear system and other machinery components to identify signs of wear, damage, or malfunction. Address any issues promptly to avoid unsafe conditions.
  • Proper Lubrication: Ensure the helical gear system is adequately lubricated according to manufacturer recommendations. Proper lubrication reduces friction, wear, and heat buildup, enhancing both performance and safety.
  • Emergency Stop: Machinery should be equipped with clearly marked emergency stop buttons or switches that operators can use to halt operations immediately in case of an emergency.
  • Cleaning and Housekeeping: Maintain a clean work environment by removing debris, oil spills, and other potential hazards. Good housekeeping minimizes slip and trip hazards and promotes safe operation.
  • Load Capacity: Adhere to the recommended load capacities specified by the manufacturer for both the helical gear system and the machinery as a whole. Overloading can lead to accelerated wear and potential failures.
  • Avoid Loose Clothing: Operators should avoid wearing loose clothing, jewelry, or other items that could become entangled in the machinery, leading to accidents.
  • Safe Working Distances: Establish safe working distances from moving parts of the machinery, including the helical gear system, to prevent accidental contact and ensure operator safety.
  • Regular Maintenance: Follow the manufacturer’s maintenance schedule and guidelines for the helical gear system. Regular maintenance reduces the risk of unexpected failures and promotes safe and reliable operation.

Prioritizing safety when operating machinery with helical gear systems is essential to prevent accidents, protect operators, and maintain efficient operations. Following these precautions and promoting a safety-conscious culture can significantly contribute to a safe working environment.

helical gearbox

Helical Gearbox: Overview and Working Mechanism

A helical gearbox is a type of mechanical device used to transmit power and motion between rotating shafts. It employs helical gears, which are cylindrical gears with teeth that are cut at an angle to the gear axis. This design feature gives helical gearboxes their distinctive helical shape and provides several advantages in terms of efficiency, smoothness, and load-bearing capabilities.

The working mechanism of a helical gearbox involves the interaction of helical gears, which mesh together to transmit torque and motion. Here’s how it works:

  1. Gear Tooth Engagement: When power is applied to the input shaft of the gearbox, the helical gear on the input shaft meshes with the helical gear on the output shaft.
  2. Helical Angle: The helical angle of the gear teeth causes a gradual engagement between the teeth, resulting in a smooth and quiet meshing process compared to straight-cut gears.
  3. Torque Transfer: As the input gear rotates, it transfers rotational force (torque) to the output gear through the meshing of their helical teeth.
  4. Direction of Rotation: Depending on the arrangement of the helical gears, the output shaft’s direction of rotation can be the same as or opposite to that of the input shaft.
  5. Load Distribution: The helical design allows for multiple teeth to be engaged at any given moment, distributing the load more evenly across the gears. This results in higher load-carrying capacity and reduced wear on gear teeth.
  6. Efficiency: Helical gearboxes are known for their high efficiency due to the gradual tooth engagement and larger contact area, resulting in minimal energy loss as compared to other gear types.

Helical gearboxes find applications in various industries where smooth operation, high efficiency, and compact design are important. They are commonly used in machinery, conveyors, automotive transmissions, industrial equipment, and more.

China wholesaler Zlyj420 Transmission Gearbox for Extruder Single Screws   gearbox drive shaft	China wholesaler Zlyj420 Transmission Gearbox for Extruder Single Screws   gearbox drive shaft
editor by CX 2023-12-22