SHANTUI 154-15-32320 Bulldozer Gearbox Large Planetary Trolley

Product Introduction

Basic information

Model: The model of planetary support for Shantui SD22 transmission usually has a specific code, such as 154 - 15 - 32320, etc. (depending on the production batch and submodel of the manufacturer).

Application: As the key component of Shantui SD22 transmission, the planetary gear is mainly used to transmit power to achieve different transmission ratios by interacting with planetary wheels, sun wheels, toothed rings and other components to complete the functions of gear shifting and speed change.

Structural design

Main body material: adopts high-strength alloy steel, which has good strength and toughness, can withstand high torque and heavy load, adapting to the working needs of the bulldozer in complex working conditions.

Structural arrangement: The planetary carrier is evenly distributed with multiple mounting holes for installing planetary gears, ensuring that the planetary gears can maintain a stable position and trajectory during operation; at the same time, the connecting parts of the planetary carrier and other gearbox components are reasonably designed, promoting accurate installation and stable transmission.

Operating parameters

Torque: Withstands high torque, typically reaching over 215Nm, ensuring stable power transmission and no deformation or damage when working under heavy load.

Speed ​​range: Suitable for Shantui SD22 motor speed, the normal working speed range is [specific speed range], which can maintain efficient and stable power transmission in the speed range.

Production process

Processing technology: After precision forging, mechanical processing, heat treatment, and other processes. Forging creates a dense internal structure and increases strength; mechanical processing ensures the dimensional accuracy of each part and meets assembly requirements; heat treatment improves wear resistance and fatigue strength of the material.

Quality Inspection: Strict quality control is carried out during the production process, including dimensional accuracy inspection, hardness testing, flaw detection, etc., to ensure that each planetary support meets high quality standards.

Adaptability and after-sales service

Adaptability: It has good adaptability with other parts of Shantui SD22 transmission, such as sun wheel, ring gear, clutch disc, etc., and can directly replace the original parts, to ensure that the overall performance of the transmission will not be affected.

After-sales service: Provides perfect after-sales service, including a certain warranty period. During the warranty period, if the product has quality problems, it can enjoy free repair or replacement services. At the same time, the manufacturer or distributor provides technical consultation and maintenance guidance, which is convenient for users to solve problems encountered during use.

The most common faults of the planetary gear carrier of the Shantui SD22 bulldozer gearbox are:

Wear problems

Gear wear: The gears on the planetary carrier mesh with other gears for long periods of time. Under high loads and high operating speeds, the tooth surfaces will wear. This leads to increased clearance in the gear mesh, resulting in impacts and noise during transmission, affecting the smoothness of power transfer. In severe cases, teeth may jump, preventing the transmission from operating properly.

Journal wear: The connections between the planet carrier journal and the bearing or other components are subject to wear due to prolonged relative motion and load. As the journal wears, the clearance increases, causing the planet carrier to vibrate during operation, affecting proper engagement of the planetary gears and potentially damaging other components.

Deformation problem

Heat Distortion: The gearbox will generate a lot of heat while the bulldozer is running. If heat dissipation is poor, the planetary carrier may become deformed due to uneven heating. Thermal distortion changes the relative positions of components on the planetary carrier, reduces the meshing accuracy between the planetary gears and other gears, causes unbalanced loads, accelerates wear on the planetary gears and carriers, and can cause transmission oil leakage.

Stress-induced deformation: When a bulldozer operates under severe conditions, the transmission will be subjected to high impact loads, and the planetary carrier may become deformed due to excessive external force. A deformed planetary carrier will alter the path of the planetary gears, causing abnormal vibration and noise. In severe cases, the planetary gears may become jammed along with the ring gear, sun gear, and other components, leading to transmission failure.

Cracks and fractures

Fatigue cracks: Under prolonged, alternating loads, fatigue stresses develop within the planetary carrier. When fatigue stress reaches a certain level, cracks appear in the planetary carrier. Fatigue cracks typically first appear in stress-concentrating areas of the planetary carrier, such as the pinion root and journal fillet. If cracks are not detected and repaired promptly, they will gradually widen and eventually lead to planetary carrier failure.

Overload failure: When a bulldozer encounters sudden, strong resistance or an operator error, the planetary carrier of the transmission can be subjected to a load exceeding its lifting capacity, resulting in an overload failure. Overload failure typically occurs suddenly, causing the transmission to instantly lose its ability to transmit power, seriously affecting the normal operation of the bulldozer and potentially even causing equipment damage and loss of life.

Lubrication and sealing problems

Poor lubrication: If the gearbox lacks sufficient lubricating oil, its quality deteriorates, or the oil circuit is clogged, the planetary carrier's lubricating parts cannot be properly lubricated. This will increase friction between the planetary carrier and other components, lead to the generation of large amounts of heat, accelerated component wear, and can even cause ablation, leading to planetary carrier failure.

Sealing failure: Seals on the planetary carrier, such as oil seals and O-rings, age, become deformed, or become damaged after prolonged use, leading to transmission fluid leakage. Transmission fluid leakage not only leads to excessive fluid consumption but also deteriorates the lubrication and cooling conditions of components such as the planetary carrier, increasing the likelihood of failure.

Shantui SD22 Bulldozer Planetary Carrier Installation Guide

1. Preparation before installation

1. Tool preparation

Socket wrenches, open-end wrenches, torque wrenches and box spanners of appropriate specifications.

The lifting equipment (such as a crane or forklift) must be rated for the weight required by the planetary carrier.

A dial indicator and dial base are used to measure mounting clearance and alignment.

To measure the corresponding dimensions, internal and external micrometers are used.

Copper rod, rubber mallet, for lightly tapping on parts during installation.

Detergent and brush for cleaning parts.

Clean cloth, rust inhibitor.

2. Preparing the site

Choose a spacious, level, clean and well-ventilated work area.

Clear debris and obstructions from the event area to ensure safe operation.

Prepare a suitable workbench or stand to support the transmission and associated components.

3. Personnel training

The installer must be familiar with the design and operating principle of the Shantui SD22 bulldozer gearbox.

Installers must undergo professional training and master the correct installation methods and operating skills.

Installers must use the necessary personal protective equipment, such as safety helmets, gloves, etc.

(IV) Checking the components

Inspect the new planetary carrier for damage, cracks, holes, and other defects. Measure the planetary carrier's key dimensions, such as the planetary gear shaft bore diameter, center distance, etc., to ensure they meet design specifications.

Check the planetary gear, sun gear, ring gear, and other related components for wear. If excessive wear is detected, replace them promptly.

Check all seals such as O-rings, seals, etc. to ensure they are not worn or damaged.

2. Disassembling the gearbox (preparing for installation of the planetary gear carrier)

1. Drain the oil.

Locate the transmission oil drain plug and place a suitable container underneath it.

Slowly loosen the oil drain bolt to drain the lubricating oil from the gearbox.

(II) Disassembly of external connecting parts

Remove oil lines, wires, joysticks and other components connected to the transmission and mark them for later installation.

Remove the connecting bolts between the gearbox and the engine, frame, etc.

(III) Lifting gear

Use lifting equipment to lift the transmission and place it on the workbench.

(IV) Disassembling the gearbox

Remove the gearbox housing, end cover and other parts from the outside in successively.

Carefully remove the internal gears, shafts, couplings and other components and arrange them in order.

3. Installation steps for planetary carrier

1. Cleaning the parts

Use a cleaning agent and a brush to thoroughly clean the planet carrier, planet shaft, bearings and other parts, removing oil, dirt and iron filings.

Wipe the parts dry with a clean cloth and apply the required amount of rust remover.

(II) Installation of planetary gears and bearings

Apply the required amount of lubricating oil to the inner bore of the planetary gear and the planetary gear shaft.

Install the bearing into the inner bore of the planetary gear, making sure it is securely fastened.

Use special tools to install the planetary gear and bearing assembly into the planet carrier shaft hole, paying attention to the installation direction and sequence.

(III) Install the planetary gear carrier into the gearbox.

Smoothly install the planet carrier into the appropriate position of the gearbox, making sure that the center hole of the planet carrier is aligned with the center of the sun gear shaft, ring gear and other components.

Use a dial indicator to check the planetary carrier alignment. The error should be within the specified range.

Install the planetary carrier mounting bolts and tighten them to the specified torque.

(IV) Installation of other related components

Install the sun gear, ring gear, clutch and other components in the reverse order of disassembly.

During installation, pay attention to the gaps and installation direction of each component to ensure correct installation.

(V) Install seals

Install new seals on the gearbox housing, end cover and other parts to ensure good sealing and prevent lubricating oil leakage.

(VI) Gearbox assembly

Reinstall the gearbox housing, end cover and other components and tighten the connecting bolts.

(VII) Connecting external components

Connect oil pipes, wires, joysticks and other components connected to the gearbox and make sure the connections are secure.

4. Post-installation check

1. External inspection

Check the appearance of the gearbox for damage, deformation, etc.

Check that all connecting bolts are tightened and seals are installed correctly.

(ii) Checking the dimensions

Using a measuring tool, recheck the installation position and corresponding dimensions of the planetary carrier to ensure they meet the design requirements.

(III) Checking the lubrication

Add the required amount of lubricating oil that meets the specifications to the gearbox and check if the oil level is within the specified range.

(IV) Functional testing

Start the bulldozer and perform an idle test to check for smooth gear shifting and no abnormal noise or vibration.

Conduct a load test to check the performance of the gear reducer under various working conditions and ensure its normal operation.

5. Notes

During the entire installation process, strictly follow the operating instructions to ensure safety.

During installation, pay attention to protecting the surface of each component to avoid scratches and damage.

Important bolts and nuts must be tightened to the specified torque to avoid failures caused by insufficient or excessive tightening torque.

After installation is complete, clean the work area and remove tools and any remaining parts.

Exhibition cabinets

Getting to know the plant

The plant employs a team of highly qualified and experienced engineers who continuously innovate and improve its products. The company currently holds a number of independent intellectual property rights and patented technologies. Its construction equipment includes a wide range of excavators, loaders, cranes, bulldozers, and other machines. These products are distinguished by their high productivity, reliability, energy efficiency, and environmental friendliness, as well as the ability to adapt to challenging operating conditions in a variety of climates and environments worldwide.

Awards and qualificationsfication

frequently asked questions

1. Which countries do we export to?

Asia: Vietnam, India, Indonesia, Pakistan, Kazakhstan, Uzbekistan, etc.

Europe: Russia, Belarus, Ukraine, Lithuania, Saudi Arabia, etc.

South America: Brazil, Chile, Paraguay, Argentina, etc.

Africa: South Africa, Ethiopia, Libya, etc.

2.What payment terms can we accept?

Usually we can work on T/T, 30% TT before production and 70% TT before shipment

3.What logistics methods can we use for delivery?

1) For most of Europe, South America and Africa etc. countries, we can go by container or Roro via ocean freight.

2) For China's neighboring countries such as Russia, Vietnam, Kazakhstan, Uzbekistan, etc., we can deliver by road or rail.

3) For light spare parts in urgent requirement, we can ship it by international courier service, such as DHL, TNT, EMS or other air freight.

4. How can you guarantee that you have delivered the goods to customers?

A: We will provide you with full delivery information for you confirmed.

5.What are our advantages compared with other manufacturers/factories?

1) Reliable quality: Carefully select reliable manufacturers to support spare parts such as engines, axles, transmissions, and many parts designed and produced by ourselves, always adopting the best materials.

2) Competitive price: Concentration of mechanized production in large quantities reduces production costs to ensure competitive price.

3) Service Team: Our sales managers are available 24/7, ready to answer your questions at any time. Our professional technical support team, with senior technicians, is ready to provide support to users and dealers. Most issues can be resolved within 24 hours.

4) Fast delivery: Generally, we can delivery within 10 working days in factory after receiving the advance payment from customers.

6. How can you provide after-sales service to customers?

A: We will reply you at the first time and help you solve the problems within 24 hours. If we really need your local, we

We will send your professional person to your locality to help you solve the problems without any hesitation, supply you with all-round