China manufacturer Zp175/Zp205/Zp275/Zp375/Zp495 Reduction Planetary Spiral Bevel Gear Oil Rotary Table for Drilling Rig and Salvage Procedure gear patrol

Product Description

API Standard ZP375 Drilling rig parts Rotary Table

Product Description

API Standard ZP375 Drilling rig parts Rotary Table
Features:
1.The pinion and gear are made of alloy steel.
2.The master bushing is made form a steel casting.
3.Pin transmission type is suitable for APl standard square Kelly or hexagonal Kelly roller bushing.
4.Effective lubrication and reliable seals are provided by design.
5.The rotary tables conform to API specification 7K and the API monogram can be used.

Welcome to consult, we will provide the most comprehensive technical support!

 

ZP SERIES OF ROTARY TABLES

Model

ZP175

ZP520

ZP275

ZP375

Opening diameter (mm)

444.5

520.7

698.5

952.5

Rated dead load(kn)

2700

3150

4500

5850

Max. torque (kN.m)

13.7

22.6

27.5

32.4

Distance from the central line of rotary Table to the central line of row teeth within chain wheel (mm)

1118

1353

1353

1353

speed ratio of gears

3.58

3.62

3.67

3.56

Max. rotary speed (r/min)

300

300

300

300

Overall Dimension(mm)

1972×1372 
×566

2266×1475 
×704

2380×1670 
×685

2415×1810 
×718

Weight (kg)

4172

5862

6122

7970

Goldenman Petroleum Equipment Co.,Limited had explored the international market and enlarged international cooperation 12years .Due to the competitive price ,good quality and excellent service ,our products are sold to America,Canada,Brazil,Columbia, Venezuela,India,UAE,Russia ,Kazakhastan,Italy,Hungary ,Australia,Syria,Egypt ,etc .and get good reputation from our overseaclients .

After-sales Service: 24/7
Warranty: 1year
Manufacturing Process: Forging
Customization:
Available

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

spiral gear

How do spiral gears handle variations in tooth engagement during operation?

Spiral gears are designed to handle variations in tooth engagement during operation effectively. The unique helical tooth arrangement of spiral gears allows them to accommodate these variations and provide several benefits. Here’s how spiral gears handle variations in tooth engagement:

  • Gradual Engagement: One of the key advantages of spiral gears is their ability to achieve gradual tooth engagement. As the gears rotate, the helical shape of the teeth allows them to come into contact gradually, starting from one end of the gear to the other. This gradual engagement minimizes the impact and shock that would occur with sudden full tooth contact in other gear types. It results in smoother and quieter operation, reducing noise, vibrations, and stress on the gear system.
  • Increased Tooth Contact Area: Spiral gears provide a larger tooth contact area compared to straight-cut or spur gears. The helical tooth profile extends the contact length along the gear face, distributing the load over multiple teeth at any given moment. This increased contact area enables spiral gears to handle higher loads and transmit torque more efficiently.
  • Load Sharing: Due to the helical arrangement, spiral gears naturally distribute the load across multiple teeth. This load-sharing characteristic helps to minimize tooth wear and fatigue. As the gears rotate, different teeth come into contact, ensuring that the load is distributed evenly. This load sharing capability enhances the gear system’s durability and extends its service life, particularly in applications with fluctuating loads.
  • Reduction of Side Thrust: Spiral gears generate an axial thrust force during operation. However, by using pairs of spiral gears with opposite helix angles, this side thrust force can be greatly reduced or even eliminated. When paired gears with opposite helix angles mesh together, the axial thrust forces cancel each other out. This eliminates the need for additional thrust bearings or complex gear arrangements to counteract the axial forces, simplifying the gear system design.
  • Improved Lubrication: The helical tooth profile of spiral gears promotes better lubrication. The continuous sliding motion between the teeth creates a pumping action that helps distribute lubricant along the tooth surfaces. This improved lubrication reduces friction, heat generation, and wear, enhancing the overall efficiency and longevity of the gear system.

These features of spiral gears—gradual engagement, increased tooth contact area, load sharing, reduction of side thrust, and improved lubrication—make them highly effective in handling variations in tooth engagement during operation. Spiral gears are commonly used in various applications such as automotive transmissions, industrial machinery, and power generation systems, where smooth and reliable power transmission is crucial.

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

What is the purpose of using spiral gears in mechanical systems?

Spiral gears, also known as helical gears, serve several important purposes in mechanical systems. Their unique design and characteristics make them suitable for various applications. Here are some key purposes of using spiral gears:

  • Smooth and Quiet Operation: The helical tooth arrangement in spiral gears enables gradual tooth engagement, resulting in smoother and quieter operation compared to straight-cut gears. This makes them ideal for applications where noise reduction and smooth motion are essential.
  • High Load Capacity: Spiral gears can handle higher loads due to the helical tooth design. The load is distributed over multiple teeth, allowing for increased load-carrying capacity and improved strength. This makes spiral gears well-suited for heavy-duty applications that require the transmission of high torque or the handling of significant loads.
  • Efficient Power Transmission: The helical tooth arrangement in spiral gears helps minimize sliding friction between the teeth. As a result, spiral gears exhibit higher efficiency compared to straight-cut gears, as there are reduced power losses due to friction during gear operation. This efficiency is crucial in applications where power transmission needs to be optimized and energy losses minimized.
  • Axial Thrust Compensation: Spiral gears can be designed with opposite helix angles on mating gears, which helps cancel out the axial thrust generated during gear meshing. This feature eliminates the need for additional thrust bearings, simplifying the gear design and reducing complexity.
  • Versatility and Adaptability: 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 mechanical systems, including gearboxes, automotive differentials, machine tools, and industrial machinery. Their adaptability and compatibility with different gear types make them valuable components in various applications.

The purpose of using spiral gears in mechanical systems is to achieve smooth, efficient, and reliable motion transmission while handling high loads and providing noise reduction. Their unique design features make them a preferred choice in many applications where these characteristics are essential.

China manufacturer Zp175/Zp205/Zp275/Zp375/Zp495 Reduction Planetary Spiral Bevel Gear Oil Rotary Table for Drilling Rig and Salvage Procedure gear patrolChina manufacturer Zp175/Zp205/Zp275/Zp375/Zp495 Reduction Planetary Spiral Bevel Gear Oil Rotary Table for Drilling Rig and Salvage Procedure gear patrol
editor by CX 2023-11-02

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