Shantui 175-13-21750 Saddle
1.High hardness: High alloy steel with heat treatment, can withstand large radial loads.
2.OEM Precision Fit: Fully comply with Shantui specifications, perfect bearing fit without any play.
3.Wear resistance: Precision surface treatment protects against abrasive wear and corrosion.
Product introduction
The saddle, part number 175-13-21750, is a genuine bearing and mounting component from Shantui, a heavy-duty equipment manufacturer, designed for SD16 series bulldozers and other heavy-duty construction and mining equipment. Unlike generic alternatives, this saddle is designed specifically for the intensive operation of heavy-duty machines under constant mechanical loads, vibration, temperature fluctuations, and exposure to abrasive environments. It precisely fits and securely holds bearings, gears, and other rotating components, which is critical for maintaining stable geometry, reducing vibration, and extending the life of the entire machine.
Materials and technical features
The key feature of the original Shantui 175-13-21750 saddle is the use of high-quality structural materials and precision manufacturing technology. It is manufactured using high-alloy steel with added chromium, molybdenum, and other alloying elements, which undergoes a complex heat treatment cycle (quenching and tempering) and high-precision machining. This material offers a unique combination of performance properties adapted to the operating conditions of heavy-duty equipment:
High hardness and compressive strength: Heat treatment results in a high HRC hardness, allowing the material to withstand the enormous radial and axial loads encountered when a bulldozer travels over rough terrain or when working with soil. The seat does not deform or collapse, even during prolonged use under maximum load, maintaining its geometry and seating accuracy.
Exceptional dimensional accuracy: All parts undergo strict dimensional inspection at the Shantui factory. The outer and inner diameters, thickness, and cylindricity and parallelism of the bearing surfaces are precisely matched to the original drawings, with minimal tolerances. This ensures a perfect fit, ensuring the specified clearance and a tight bearing fit without play or distortion.
Abrasion Resistance: The material has high abrasion resistance, which is critical for applications where it is in constant contact with metal bearing surfaces and in the presence of fine abrasive particles (sand, dirt). This prevents rapid wear of the bearing groove and maintains the unit's geometry for a long time.
Corrosion protection: The seat surface has a special anti-corrosion coating or heat treatment that protects the metal from rust and corrosion, especially when used in high humidity conditions or in contact with water and chemical environments.
Scope of application
The 175-13-21750 saddle is a specialized support part designed for installation in critical systems of Shantui equipment:
Undercarriage: This constitutes the primary area of application—specifically, the seating and securing of bearings within track rollers, support rollers, and other rotating components of the undercarriage system. In these assemblies, the bearing seat ensures precise positioning of the bearing, preventing displacement and play while traversing uneven terrain—factors that directly impact the stability and operational safety of the bulldozer.
Transmission and gearboxes: Installed in gearbox housings, transmissions, and driveshafts, it compensates for thermal expansion of the metal as it heats up during operation, maintaining a stable clearance and preventing vibrations that can damage expensive transmission components.
Hydraulic Systems: Fitting hydraulic pumps, cylinders and hydraulic blocks where absolute positioning accuracy is required to ensure efficient system operation under high pressure.
Working equipment: Fixing of hinges and levers of working equipment (blade, ripper, bucket), where high strength and resistance to impact loads are required.
This spare part is used both in the factory assembly of new equipment, and in scheduled and major repairs, replacing worn seats to restore the geometry and reliability of components.
Functional purpose
The primary function of the 175-13-21750 seat is to ensure precise fit and secure fixation of rotating components. However, its role in machine operation is much broader:
Rigid bearing fixation: The seat prevents relative movement and play between the bearing and the unit housing, which is critical for stable operation of mechanisms under any operating conditions.
Load distribution: It evenly distributes radial and axial loads over the entire contact area, protecting the housing and bearing from local overheating and premature wear.
Vibration Damping: The tight fit of the seat to the surfaces compensates for minor vibrations that occur during engine and chassis operation, protecting adjacent components from fatigue and damage.
Maintaining stable geometry: Thanks to its rigidity and dimensional accuracy, the seat maintains the specified distance between parts throughout its entire service life, which ensures the correct operation of mechanisms and reduces the risk of malfunctions.
Anti-Movement Protection: Prevents bearings, gears or other components from moving relative to each other, which is critical to maintaining transmission and hydraulic stability.
Advantages over non-original analogues
Many vehicle owners choose aftermarket saddles due to their low price, but these parts have significant drawbacks that lead to high risks and additional costs:
Dimensional and geometric inaccuracies: Analogs often have deviations in diameter, thickness, and cylindricity, resulting in improper fit, play, or excessive compression. This leads to rapid bearing wear and failure of expensive components. The original Shantui 175-13-21750 seat fully complies with specifications, guaranteeing a perfect fit.
Low-quality materials: Non-original parts are often made of low-quality carbon steel without alloying or heat treatment. They wear out quickly, rust, and can even deform or break under load, creating a risk of failure during operation.
Lack of quality control: Analogues do not undergo strict testing at the factory, which often leads to hidden defects. Original Shantui parts have quality certificates and an official guarantee confirming their reliability.
High Risk of Costly Repairs: The use of a non-original saddle can lead to shaft misalignment, bearing wear, or hydraulic cylinder failure—repairs for which can cost hundreds of times more than the price of the original part.
Installation and maintenance
Correct installation of the 175-13-21750 saddle directly affects its service life and the performance of the unit, so it is recommended to follow these steps:
Seat preparation: Thoroughly clean the groove and housing surfaces of dirt, rust, old grease, and old seals. Inspect the surfaces for burrs, scratches, or deformations that could damage the new seat or cause a loose fit.
Inspecting the part: Before installation, inspect the seat for cracks, chips, deformations, or other damage. Ensure there is no corrosion on the working surfaces.
Installation: Carefully place the seat in the mounting groove, ensuring it is correctly oriented and not warped. If necessary, use a press to install the seat; do not use impact tools to avoid deforming the part.
Assembling the unit: Install the bearing and other mating parts, ensuring that they are correctly positioned.
Inspection: After assembly, check the shaft for ease of rotation and absence of play. Ensure all parts are in place and cannot shift.
To maintain the unit's performance, it is recommended to regularly check the condition of the saddle during routine maintenance, promptly replace worn parts, and use only genuine Shantui spare parts.
Conclusion
The Shantui 175-13-21750 saddle is a small but critical component that determines the precision and reliability of the entire chassis and transmission system of heavy-duty equipment. Choosing a genuine part ensures the geometry of the components is maintained, protection from play and vibration is ensured, and the service life of all related components is extended. For companies operating Shantui equipment, using genuine saddles is an investment in operational safety, reduced repair costs, and increased overall machine performance.
Exhibition cabinets
Getting to know the plant
The plant employs a team of highly qualified and experienced engineers who continuously implement technological innovations 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 work 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: Concentrating 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
