P9841773AA, 5000200004, QBJ10072704 and Related Components

Product Introduction

This product line covers a full range of high-precision industrial machinery components, including key parts such as P9841773AA Side brace, 5000200004 Rear axle brake air chamber, QBJ10072704 M27X2-1/2″ bushing, and 1101002017 Hose assembly 8I-1000. These components are specifically designed and manufactured to adapt to heavy-duty industrial equipment such as rotary table systems, rear axle brake systems, transmission mechanisms, and hydraulic/pneumatic systems, targeting professional users including industrial equipment manufacturers, maintenance and repair (M&R) enterprises, and equipment operation teams in fields such as construction machinery, mining machinery, heavy-duty transportation, and oilfield drilling. The core purpose of this product line is to provide users with integrated, high-reliability component solutions that solve common pain points such as frequent component wear, unstable brake performance, poor pipeline sealing, loose structural connection, and difficult maintenance, ensuring the continuous, safe, and efficient operation of industrial equipment while reducing maintenance costs and unplanned downtime.

Core Functions

Each component in this product line undertakes a unique and critical functional role, forming a complete supporting system for industrial equipment that covers structural support, brake control, hydraulic/pneumatic transmission, and component fixing:

• Structural Support Components (P9841773AA Side brace, P9930648AA Cross beam, P981120143AA Channel steel L=3749, P9970040AA Reinforced rod): Provide stable load-bearing support for the overall structure of industrial equipment, enhance the rigidity and stability of equipment components such as rotary tables and stable beams, resist deformation caused by external loads and vibration, and ensure the structural integrity of the equipment during long-term operation.

• Brake System Components (5000200004 Rear axle brake air chamber, 5401700007 236 model clutch, P0700067AA Piston, 5300200191 Oil seal PG170X210X16): Control the braking of heavy-duty equipment rear axles, realize smooth starting and stopping of the equipment, ensure driving and operation safety; the oil seal and piston ensure the airtightness and stability of the brake air chamber, preventing air or oil leakage that may lead to brake failure.

• Hydraulic/Pneumatic Components (1101002017 Hose assembly 8I-1000, Z08330300020AA Hose assembly 10, Z08250000005AA Air reservoir, 4900350126 Pressure regulating valve): Transmit hydraulic oil or compressed air stably between equipment systems; store compressed air for the brake system to ensure stable brake performance; adjust and stabilize the pressure of hydraulic/pneumatic systems, preventing pressure fluctuations from affecting equipment operation.

• Connecting & Fixing Components (QBJ10072704 M27X2-1/2″ bushing, 5402650175 7/16″-14UNC bolt, 4300812030 Bolt M12X30, 4317500012 Nut M12, K46201156001AA Cross fitting): Realize firm connection between equipment parts, pipelines, and components; ensure tight sealing of pipeline joints to prevent fluid/gas leakage; adjust the fit between components to improve assembly accuracy and stability.

• Transmission & Auxiliary Components (P3000019AA Gear Z=49, P1400145AA Intermediate disc, spring, P1100059AA Guiding sleeve, P1400173AA Shaft sleeve): Transmit power between equipment components to adjust the speed and torque of the transmission mechanism; guide the movement of movable components to ensure smooth operation; reduce friction between components and extend their service life.

• Functional Auxiliary Components (Z04010100001AA Pad eye, wireline, Z05012102013AA Lifting ring, P7100208AA Guard, 4900450013 Oil returning valve piece): Facilitate the lifting, hoisting, and wireline operation of equipment and components; protect key equipment parts from dust, impact, and damage; control the flow of hydraulic oil to ensure the normal circulation of the hydraulic system.

Structural Features

The components in this product line adopt advanced structural design, strict manufacturing processes, and high-quality materials, integrating reliability, durability, and practicality. Their outstanding structural features fully meet the harsh operation requirements of industrial equipment:

1. High-Precision Manufacturing & Perfect Compatibility

All components (such as QBJ10072704 M27X2-1/2″ bushing, 5300200191 Oil seal PG170X210X16, P1101266AA Copper sleeve) are processed by CNC machine tools, precision forging, and precision turning technology, with dimensional tolerance controlled within ±0.02mm. They are fully consistent with the original equipment design standards in terms of installation interface, material performance, and dimensional parameters, and can be directly replaced without modifying any structure of the equipment. This avoids installation difficulties caused by dimensional deviation and reduces the risk of component damage during assembly, ensuring seamless compatibility with the original equipment.

2. Durable Material Selection & Strong Environmental Adaptability

Materials are carefully selected according to the functional characteristics and working environment of each component to maximize service life: structural components (P9841773AA Side brace, P9930648AA Cross beam, P981120143AA Channel steel) adopt high-strength carbon structural steel or alloy steel, with high tensile strength and bending resistance, and are treated with hot-dip galvanizing or anti-corrosion spraying to resist humidity, dust, and chemical corrosion; brake system components (5000200004 Rear axle brake air chamber, P0700067AA Piston) adopt wear-resistant and corrosion-resistant alloy materials, ensuring stable performance in high-pressure and high-temperature environments; sealing components (5300200191 Oil seal, QBJ5071403 M14X1.5-NPT3/8″ fitting) adopt nitrile rubber (NBR) or fluorine rubber (FKM), with excellent oil resistance, high temperature resistance (-40℃~120℃), and sealing performance; fasteners (5402650175 bolt, 4317500012 Nut M12) adopt high-strength alloy steel, with tensile strength ≥8.8 grade and strong anti-loosening and anti-fatigue performance.

3. Optimized Structural Design & Stable Performance

The structural design of each component fully considers the actual working conditions of industrial equipment: P9841773AA Side brace and P9970040AA Reinforced rod adopt a reinforced rib structure, which significantly improves load-bearing capacity and anti-deformation performance, adapting to the high-load operation of rotary tables and stable beams; 5000200004 Rear axle brake air chamber adopts an integrated piston structure, with fast response speed and stable braking force, ensuring safe braking of heavy-duty equipment; hose assemblies (1101002017, Z08330300020AA) adopt a multi-layer braided structure, with strong pressure resistance (up to 40MPa) and fatigue resistance, not easy to burst or crack under long-term high-pressure and high-frequency vibration; 4900350126 Pressure regulating valve adopts a precision pressure sensing structure, which can accurately adjust the system pressure, ensuring the stable operation of hydraulic/pneumatic systems.

4. Easy Installation & Maintenance

All components are designed with user convenience in mind to improve installation and maintenance efficiency: Z04010100001AA Pad eye, wireline and Z05012102013AA Lifting ring are equipped with pre-drilled holes, which can be directly fixed by bolts, facilitating the lifting and hoisting of equipment components; P1100422AA Gland, bearing and P1400173AA Shaft sleeve adopt a split structure, which is easy to disassemble and assemble without special tools; QBJ10072704 M27X2-1/2″ bushing and K46201156001AA Cross fitting adopt a threaded connection structure, which is easy to install and adjust, and can quickly realize pipeline connection; all components are marked with clear model numbers, which is convenient for users to identify, select, and replace during maintenance.

Applicable Working Conditions

This series of components has strong environmental adaptability and wide applicability, covering various harsh industrial working conditions, and can perfectly match the operation needs of different types of heavy-duty equipment:

1. Construction Machinery Working Conditions

Applicable to rotary tables, rear axle brake systems, and hydraulic/pneumatic systems of construction machinery such as cranes, excavators, and bulldozers. It can withstand high vibration, high load, and dust interference on construction sites, ensuring stable operation of equipment structural components, brakes, and hydraulic systems.

2. Mining Machinery Working Conditions

Suitable for mining equipment such as coal miners, mine cars, and crushers, with strong corrosion resistance and wear resistance. It can adapt to humid, dusty, and corrosive environments in mines, ensuring the stable operation of rotary table beams, brake systems, and structural supports, reducing the frequency of component replacement.

3. Heavy-Duty Transportation Working Conditions

Applied to the rear axle brake system, structural parts, and pipeline systems of heavy-duty trucks, trailers, and special vehicles. It can withstand long-term load-bearing, road vibration, and temperature changes, ensuring the safety and reliability of the brake system, the stability of structural components, and the tightness of pipeline connections.

4. Oilfield & Industrial Production Working Conditions

Suitable for oilfield drilling equipment (wireline operation components, hydraulic systems) and industrial production lines (metallurgy, chemical industry) equipment, providing stable support for structural components, brake control, and hydraulic/pneumatic transmission. It can adapt to high-pressure, high-temperature, and corrosive environments in oilfields and industrial production, ensuring continuous and efficient operation of equipment.

Maintenance and Maintenance Suggestions

To extend the service life of the components, reduce equipment failure rate, and ensure long-term stable operation of industrial equipment, the following practical maintenance suggestions are provided, combined with the characteristics of the components in this product line:

1. Regular Inspection (Key to Preventing Failures)

Inspect the components regularly according to the working conditions: for general working conditions, inspect once a month; for harsh working conditions (mining, oilfield), inspect once a week. Focus on checking: whether the hose assemblies (1101002017, Z08330300020AA) have cracks, bulges, or oil leakage; whether the 5000200004 Rear axle brake air chamber has air leakage, and whether the piston moves smoothly; whether the structural components (P9841773AA Side brace, P9930648AA Cross beam) have deformation or cracks; whether the fasteners (5402650175 bolt, 4317500012 Nut M12) are loose; whether the 5300200191 Oil seal has aging, deformation, or oil leakage.

2. Regular Cleaning (Protect Component Performance)

Clean the surface of the components regularly to remove dust, oil stains, and impurities: use neutral cleaning agents to clean structural components (P9841773AA Side brace, P6201854AA Stiffener) to avoid corrosion caused by impurities; clean the QBJ10072704 M27X2-1/2″ bushing, K46201156001AA Cross fitting, and pipeline joints to ensure sealing performance; clean the P1100059AA Guiding sleeve and P1400173AA Shaft sleeve to avoid jamming caused by dust accumulation, ensuring smooth movement of movable components; clean the Z08250000005AA Air reservoir regularly to remove internal impurities and ensure the purity of compressed air.

3. Reasonable Lubrication (Reduce Component Wear)

For moving components and connecting parts (such as P3000019AA Gear Z=49, P0700067AA Piston, P1101266AA Copper sleeve), apply lubricating oil or grease regularly (once every 3 months). Choose lubricants that match the component materials and working conditions to reduce friction between components, avoid wear and jamming, and improve the flexibility and service life of components. Pay attention to the lubrication amount to avoid excessive lubrication leading to oil pollution.

4. Timely Replacement (Avoid Secondary Damage)

Replace the components in time when the following situations occur to avoid equipment failure or secondary damage: the sealing components (5300200191 Oil seal, QBJ5071403 fitting) are aged, deformed, or leaking; the hose assembly is cracked, bulging, or the service life exceeds 2 years; the structural components have deformation or cracks; the fasteners are worn, deformed, or broken; the 5000200004 Rear axle brake air chamber has poor braking performance or air leakage; the 4900350126 Pressure regulating valve cannot adjust pressure accurately. It is recommended to use the original model components (such as P9841773AA Side brace, P1000204AA Retaining ring) for replacement to ensure compatibility and performance stability.

We supply the following spare parts:

On-Site Fault Maintenance Cases

The following are 3 real on-site fault maintenance cases, which are common problems in industrial equipment operation. They can provide practical reference for users to quickly diagnose and solve faults, reducing maintenance time and costs:

Case 1: Rear Axle Brake Failure of Heavy-Duty Truck

Fault Phenomenon: A heavy-duty truck has weak braking force and long braking distance during driving, which seriously affects driving safety. Fault Diagnosis: After inspection, it is found that the 5300200191 Oil seal PG170X210X16 of the 5000200004 Rear axle brake air chamber is aged and deformed, leading to air leakage in the air chamber, and the piston cannot move normally to provide sufficient braking force. Maintenance Method: Disassemble the rear axle brake air chamber, replace the aged 5300200191 Oil seal with a new one of the same model, apply an appropriate amount of lubricating grease on the surface of the oil seal, reassemble the air chamber, and test the brake system. Maintenance Effect: The air leakage of the brake air chamber is completely eliminated, the piston moves smoothly, the braking force of the truck is restored to normal, and the driving safety is guaranteed.

Case 2: Hydraulic Pipeline Leakage of Construction Crane

Fault Phenomenon: During the lifting operation of a construction crane, hydraulic oil leakage occurs at the pipeline connection, resulting in a decrease in the pressure of the hydraulic system and inability to lift normally. Fault Diagnosis: After inspection, it is found that the QBJ5071403 M14X1.5-NPT3/8″ fitting at the pipeline joint is loose, and the sealing surface is worn, leading to hydraulic oil leakage. Maintenance Method: Disassemble the QBJ5071403 fitting, clean the sealing surface, replace the fitting with a new one of the same model, apply an appropriate amount of sealant on the thread, and tighten the fitting according to the specified torque (25N·m). Maintenance Effect: The hydraulic oil leakage is completely eliminated, the pressure of the hydraulic system returns to normal, and the crane resumes normal lifting operation.

Case 3: Structural Deformation of Mining Crusher Rotary Table

Fault Phenomenon: The rotary table of a mining crusher cannot rotate smoothly, and there is abnormal noise, and the structural connection is loose. Fault Diagnosis: After inspection, it is found that the P9841773AA Side brace supporting the rotary table is deformed due to long-term high-load operation, and the 4300812030 Bolt M12X30 fixing the side brace is loose, leading to unstable operation of the rotary table. Maintenance Method: Replace the deformed P9841773AA Side brace with a new one of the same model, use a torque wrench to tighten the 4300812030 Bolt M12X30 according to the specified torque (35N·m), check the tightness of other structural components, and test the rotary table. Maintenance Effect: The rotary table rotates smoothly, the abnormal noise disappears, the structural components are firmly fixed, and the crusher resumes normal operation, ensuring the continuity of mining work.

FAQ (Frequently Asked Questions)

Purchase Guide

This series of components covers all key parts of industrial equipment such as structural support, brake control, hydraulic/pneumatic transmission, and component connection, including core models such as P9841773AA Side brace, 5000200004 Rear axle brake air chamber, QBJ10072704 M27X2-1/2″ bushing, and 1101002017 Hose assembly 8I-1000. All products have passed strict quality inspection before leaving the factory, including dimensional inspection, material performance test, pressure test, sealing test, and load-bearing test, complying with international industrial standards (ISO 9001 quality management system certification) and having reliable quality and stable performance. Whether you are an equipment manufacturer in need of batch procurement, a maintenance enterprise in need of emergency replacement parts, or an operation team in need of regular maintenance supplies, we can provide you with high-quality products and professional technical support. You can select the required component models according to your equipment parameters and actual working needs, and contact us for procurement. We will provide you with reasonable quotation, complete product parameter documents, and professional after-sales guidance to help you efficiently solve component selection, replacement, and maintenance problems, and ensure the continuous and stable operation of your equipment.

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