4201120150/4201120241/4201120632/4202000970 Series Industrial Fasteners and Hydraulic Matching Compo

1. Product Overview & Core Application Purpose

This full set of industrial fasteners, sealing parts, transmission components and hydraulic assembly parts covers core model groups including 420112xx hexagon socket head cap screws, 420200xx threaded bolts, 420420xx round nuts, 420501xx locking parts and 970106/970201xx mechanical assembly components. All parts are fully compliant with ISO 898-1 mechanical property standards for fasteners and ISO 6194 sealing system specifications, specially customized for heavy-duty hydraulic engineering machinery, mining equipment and oilfield operation equipment. Targeting equipment maintenance engineers, engineering equipment supporting manufacturers and oilfield on-site operation teams, this product set solves common industry pain points including bolt loosening under high vibration, seal failure under variable pressure, pin positioning deviation and assembly part fatigue damage. It delivers stable mechanical locking, zero-leakage hydraulic sealing and precise structural connection, supporting 12000 hours of continuous stable operation of mainstream heavy-duty engineering equipment.

2. Core Product Introduction

The product portfolio integrates standard fasteners, precision sealing elements, positioning transmission parts and customized mechanical assembly components. Standard fastener series include hexagon socket head cap screws, wire hole bolts, round nuts and lock washers, adopting high-strength alloy steel integral forging process. Sealing components cover O-rings and compact seal rings, matched with imported fluororubber and metal composite sealing structures. Structural assembly parts contain guide rails, brake components, motor assemblies and balance cylinder supporting parts, realizing full-scene supporting for mechanical connection, hydraulic sealing and equipment structural fixing of heavy-duty equipment.

3. Functional Description

Each component undertakes exclusive core functions in complete equipment operation. Fastener products provide constant-torque locking restraint to offset high-frequency vibration displacement of equipment during heavy-load operation; locking and spring collar parts eliminate axial play of rotating and reciprocating components; pin and flat key parts ensure precise positioning of transmission structures to avoid power transmission deviation; sealing components isolate internal hydraulic oil and external dust, moisture and corrosive media to maintain stable hydraulic system pressure; customized assembly parts such as balance cylinder brackets and brake components undertake equipment load balance and motion control functions, ensuring synchronous and accurate operation of mechanical actions.

4. Structural Characteristics

All parts adopt optimized industrial-grade structural design. Threaded fasteners feature precision rolling thread structure with 0.02mm thread tolerance, improving meshing tightness by 30% compared with ordinary standard parts. Sealing parts adopt multi-layer composite structure, combining elastic compression and rigid limit to adapt to reciprocating pressure impact. Positioning components achieve zero-gap assembly through CNC finishing. Custom assembly structures integrate reinforcement and shock absorption structures, with integral structural rigidity resisting 8000N alternating load impact. All exposed parts pass anti-rust and anti-corrosion treatment, adapting to harsh outdoor operation environments.

5. Applicable Working Conditions

This product set is suitable for heavy-load, high-vibration and variable-temperature harsh working conditions, covering oilfield mining, open-pit mining, large-scale engineering machinery operation and industrial hydraulic equipment production. It stably operates in the temperature range of -40℃ to 120℃, adapts to hydraulic system working pressure up to 42MPa, and maintains stable structural performance in dusty, humid and weakly corrosive working environments. It is perfectly matched with large-scale hydraulic engineering equipment, mining drilling rigs and oilfield well repairing equipment.

6. Maintenance and Maintenance Suggestions

Adhere to standardized maintenance specifications to extend component service life. Fasteners need torque inspection every 2000 working hours to avoid loose failure; sealing parts are recommended for visual inspection every 1000 hours and replacement after 6000 hours of operation; spring collars and pin parts shall be checked for fatigue deformation during equipment regular maintenance; hydraulic assembly parts need regular cleaning of internal oil circuit impurities to keep hydraulic fluid cleanliness meeting ISO 4406 14/11 standard. Avoid over-tightening fasteners during installation to prevent thread damage, and strictly match original model specifications for replacement parts.

We supply the following spare parts:

4201120150 hexag on socket head cap screw

4201120241 hexag on socket head cap screw

4201120632 hexag on socket head cap screw

4202000970 hexag on head bolt

4202001181 hexag on bolts with wire

4202001201 bolts with wire holes

4204200010 round nut

4205010460 lock washer

4205030051 spring collar

4205030070 spring collar

4205030080 spring collar

4207010510 thread straight pin

4208010170 flat key

5101000400 coupli ng

5303000671 O-ring

5304000030 compact seal ring

5304000060 compact seal ring

5304000070 compact seal ring

9701000003 110 safety pin

9701060000Y reactive torque beam assembly

9701060001 sway brace pressboard

9701060002 bolt

9701063000 clamp ing plate assembly

9701740000 middle guide rail

9702010011 spacer

9702010015 main oil in hose assembly

9702011000 motor

9702012002 brake disc

9702012018 bend plate 1

9702012021 air-blower base, side B

9702012100 Brake former, side A

9702012200 Brake former, side B

9702020210 support ring

9702020305 adjust pad

9702020336 seal gasket

9702020406 muzzle

9702020430Y safety guard assembly

9702020600 spring collar

9702020610 cross piece

9702020612 connect ingpipe flange

9702030000Y goose neck assembly

9702032014 O-ring

9702036001 O-ring

9702050007 locking plate

9702050008 lifti ng bail

9702050300Y hanging beam for coun terbala nee cylinder

9702050303 stabilizer for coun terbalanee cylinder

9702115000 junction box

9702120300 main shaft assembly

9702230012 double pin sub

9752020005 tee joint

7. On-site Fault Maintenance Cases

Case 1: Jiangsu Oilfield, Model XG450 Drilling Equipment, 380kN rated load. Equipment suffered hydraulic pipeline leakage due to aging 5304000060 compact seal ring. After replacing the original matching seal ring, the pipeline pressure remained stable at 32MPa without leakage. Customer feedback: equipment downtime reduced significantly, and hydraulic system operation stability improved obviously.

Case 2: Shandong Mining Site, Model ZL50 Mining Loader, 520kN working load. Loosening of 4202001181 wire bolts caused structural vibration deviation. After replacing the original bolts and calibrating torque, equipment vibration amplitude reduced by 0.15mm, and transmission operation returned to normal. Customer feedback: equipment failure frequency decreased greatly.

Case 3: Xinjiang Oilfield, Model TJ300 Well Repairing Machine, 290kN load. Fatigue deformation of 4205030070 spring collar led to component axial displacement. After replacement, component positioning accuracy recovered to 0.01mm tolerance range. Customer feedback: equipment positioning failure problem was completely solved.

Case 4: Hebei Engineering Construction Site, Model LG630 Excavator, 450kN load. Wear of 9702012002 brake disc caused delayed braking response. After replacing the original brake disc, equipment braking response time stabilized at 0.3s, meeting industrial operation standards. Customer feedback: equipment operation safety was fully guaranteed.

8. FAQ

9. Procurement Guidance & Closing Description

This full set of industrial supporting components is produced in strict accordance with international industrial certification standards, with rigorous production process and precision testing procedures adopted for each batch of products, ensuring consistent product precision, structural strength and service life. All products solve core industrial pain points such as easy loosening of fasteners, easy leakage of seals and low positioning accuracy of structural parts, and provide long-term stable operation guarantee for heavy-duty engineering, oilfield and mining equipment. We support standardized batch supply and model-matching customized supply, provide professional model selection technical consultation and on-site installation guidance suggestions for procurement customers, and serve as a reliable one-stop supporting component supplier for equipment maintenance and complete machine supporting projects. Customers can put forward procurement demands according to actual equipment models, working conditions and maintenance cycles, and we will provide accurate product matching and professional technical solution support.