Core Application & Target User Requirement Statement
This catalog is exclusively tailored for XJFH series air winches, key hoisting equipment widely applied in onshore/offshore oilfields, construction sites, and mining operations for load lifting, traction, and positioning. It addresses the refined needs of drilling rig maintenance supervisors, winch operation teams, and industrial procurement specialists who require precision-matched, standard-compliant parts to resolve air control inefficiency, power transmission failure, and seal leakage issues. The core purpose is to provide an authoritative, actionable reference that serves as both a procurement standard (ensuring 100% compatibility with XJFH models and compliance with GB/T standards) and a technical troubleshooting tool. In high-dust, high-vibration industrial scenarios, reliable XJFH air winch parts directly guarantee operational safety, hoisting efficiency, and reduced unplanned downtime.
Classified Parts Inventory & Detailed Specifications
1. Distributing Valve Assembly Components
Distributing valve assembly components (Distributing valve body, Assigning valve, Air valve, etc.) are the "control core" of XJFH air winches, responsible for regulating air flow, pressure, and direction to drive winch operation. Valve core wear, seal aging, or spring fatigue can lead to air leakage, control insensitivity, and even winch misoperation—critical pain points affecting hoisting accuracy and safety. High-precision, wear-resistant valve components ensure stable air control, compliant with industrial pneumatic system standards, suitable for high-pressure (up to 1.6MPa) and high-dust environments, directly enhancing control responsiveness and operational reliability.
No. | Part Name | Part Number | Material | Main Wear Causes | Preventive Maintenance Guidelines |
1 | Distributing Assembly | XJFH-□/□-1000 | Alloy Steel 40Cr (Valve Body & Core, Precision Machined) + Spring Steel 65Mn (Torsion Spring) + Nitrile Rubber (Seals) | 1. Air leakage due to seal ring aging from long-term pneumatic pressure impact; 2. Valve core wear from dust contamination in compressed air (particle size ≥5μm). | 1. Replace seal rings every 6 months; conduct air tightness testing (1.2 times rated pressure) annually; 2. Use compressed air filters with 3μm precision; drain moisture from the air system daily. |
2 | Distributing valve body | XJFH-□/□-1001 | Alloy Steel 40Cr (Forged & Quenched, Internal Honing) | 1. Internal cavity wear from valve core reciprocating movement (clearance >0.05mm); 2. Corrosion of internal surface from moisture in compressed air (moisture content >0.1%). | 1. Inspect internal clearance quarterly; re-hone if exceeding 0.05mm; 2. Install air dryer to maintain moisture content ≤0.1%; replace compressed air oil every 12 months. |
3 | Assigning valve cover | XJFH-□/□-1002 | Carbon Steel Q355B (Zinc-Plated, Precision Machined) | 1. Seal damage from over-tightening during assembly; 2. Corrosion of zinc plating in high-humidity offshore environments. | 1. Tighten with calibrated torque wrench (rated torque: 25-30N·m); 2. Apply marine-grade anti-corrosion coating annually; inspect for rust spots monthly. |
4 | Key 6×18 | GB/T1096-79 | Carbon Steel 45# (Heat-Treated, Hardness HRC40-45) | 1. Shear failure from torque overload (torque >150N·m); 2. Wear of keyway from repeated assembly/disassembly. | 1. Strictly comply with rated torque limits; conduct torque testing quarterly; 2. Use hydraulic tools for assembly/disassembly to avoid keyway damage; replace if wear exceeds 0.2mm. |
5 | Assigning valve | XJFH-□/□-1003 | Alloy Steel 40Cr (Surface Hardened, Precision Ground) | 1. Valve seat wear from long-term air flow scouring; 2. Thermal fatigue from extreme temperature fluctuations (-20℃ to 60℃) in outdoor operations. | 1. Inspect valve seat wear monthly; re-grind if wear depth exceeds 0.03mm; 2. Insulate valve body in low-temperature environments; avoid direct sunlight in high-temperature areas. |
6 | Torsion spring | XJFH-□/□-1004 | Spring Steel 60Si2Mn (Heat-Treated, High-Elasticity) | 1. Fatigue deformation from repeated torsion cycles (cycles >10,000 times); 2. Corrosion of surface oxide layer in humid environments. | 1. Inspect spring deformation monthly; replace if permanent deformation exceeds 2%; 2. Apply anti-rust oil before installation; store spare springs in a dry environment. |
7 | Adjusting bolt | XJFH-□/□-1005 | Carbon Steel 8.8 Grade (Zinc-Plated, Heat-Treated) | 1. Thread wear from repeated adjustment; 2. Loosening due to winch vibration (vibration frequency 10-30Hz). | 1. Use thread lock compound after adjustment; limit adjustment times to ≤50 times; 2. Install lock nut to prevent loosening; re-check torque monthly. |
8 | Connecting rod | XJFH-□/□-1006 | Alloy Steel 40Cr (Forged & Machined) | 1. Bushing wear from rotational friction; 2. Fatigue cracking from cyclic bending loads. | 1. Lubricate bushing with high-temperature anti-wear grease every 30 operating hours; 2. Conduct magnetic particle testing (MPT) annually to detect fatigue cracks. |
9 | Pin 10×45 | GB/T880-86 | Carbon Steel 45# (Quenched & Tempered) | 1. Wear of pin surface from sliding friction; 2. Corrosion in saltwater environments (offshore operations). | 1. Lubricate with anti-corrosion grease monthly; 2. Apply zinc-chromate coating for offshore use; replace every 6 months in marine environments. |
10 | Pin 3×20 | GB/T91-86 | Carbon Steel Q235B (Zinc-Plated) | 1. Shear failure from overload; 2. Corrosion of zinc plating from moisture. | 1. Strictly comply with load limits; avoid impact loads; 2. Inspect for corrosion monthly; replace if corrosion area exceeds 10%. |
11 | Spindle | XJFH-□/□-1007 | Alloy Steel 42CrMo (Precision Ground, Surface Hardened) | 1. Journal wear from bearing friction; 2. Thermal deformation from uneven heating in high-temperature operations. | 1. Replace bearings every 2000 operating hours; 2. Monitor operating temperature; avoid exceeding 60℃; install cooling fins if necessary. |
12 | Spring | XJFH-□/□-1008 | Spring Steel 65Mn (Heat-Treated) | 1. Fatigue fracture from cyclic compression (compression rate >30%); 2. Aging from long-term storage (storage time >2 years). | 1. Control compression rate between 15-25%; replace every 6 months; 2. Store in a cool, dry environment; shelf life ≤2 years. |
13 | Screw M12×20 | GB/T77-85 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Thread damage from cross-threading during assembly; 2. Fatigue from vibration. | 1. Align threads correctly during assembly; use proper tools; 2. Install spring washers to absorb vibration; re-torque monthly. |
14 | Lever | XJFH-□/□-1009 | Carbon Steel Q355B (Forged & Surface Painted) | 1. Bending deformation from excessive operating force; 2. Paint peeling and corrosion from impact. | 1. Limit operating force to rated value (≤50N); 2. Touch up paint after impact damage; inspect for deformation monthly. |
15 | Nut M42×2 | XJFH-□/□-1010 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Thread wear from high-torque tightening; 2. Corrosion in industrial dust environments. | 1. Tighten with torque wrench (follow rated torque values); 2. Clean threads regularly to remove dust; apply anti-rust oil. |
16 | Air valve | XJFH-□/□-1100 | Brass H62 (Valve Body) + Polyurethane (Seal Ring) | 1. Seal leakage from aging polyurethane ring; 2. Valve core clogging from oil residue in compressed air. | 1. Replace seal rings every 6 months; 2. Clean valve core quarterly; use oil-water separators in the air system. |
17 | Steel bolt ф13 | GB308-89 | Carbon Steel 4.8 Grade (Zinc-Plated) | 1. Loosening due to vibration; 2. Corrosion of zinc plating. | 1. Use lock washers; re-torque monthly; 2. Apply anti-corrosion paint to exposed areas. |
18 | Distributing valve cover | XJFH-□/□-1011 | Carbon Steel Q355B (Zinc-Plated) | 1. Same as XJFH-□/□-1002; 2. Seal damage from improper installation. | 1. Same as XJFH-□/□-1002; 2. Ensure seal ring is properly seated before tightening. |
19 | Inner unit G1 1/2″ | GB3289.26-82 | Brass H62 (High-Precision Machined) | 1. Thread wear from repeated assembly; 2. Corrosion from moisture in compressed air. | 1. Use thread seal tape during assembly; limit disassembly times to ≤20; 2. Install air dryer to reduce moisture. |
20 | Elbow G1 1/2″ | GB3289.2-82 | Brass H62 | 1. Crack from excessive bending torque during installation; 2. Corrosion in saltwater environments. | 1. Avoid over-bending during installation; use proper tools to tighten; 2. Apply anti-corrosion coating for offshore use. |
21 | Pin 5×14 | GF/T119-86 | Carbon Steel 45# (Zinc-Plated) | 1. Wear from rotational friction; 2. Corrosion of zinc plating. | 1. Lubricate with anti-wear grease monthly; 2. Inspect for corrosion monthly; replace if needed. |
22 | Distributing valve cover | XJFH-□/□-1012 | Carbon Steel Q355B (Zinc-Plated) | 1. Same as XJFH-□/□-1002; 2. Deformation from impact during maintenance. | 1. Same as XJFH-□/□-1002; 2. Handle with care during maintenance to avoid impact. |
23 | Distributing valve core | XJFH-□/□-1200 | Alloy Steel 40Cr (Precision Ground, Surface Hardened to HRC55-60) | 1. Wear of valve core surface from dust contamination; 2. Scratches from improper installation. | 1. Clean the valve body interior before installation; use filtered compressed air; 2. Inspect for scratches monthly; polish minor scratches (≤0.02mm) with abrasive paper. |
24 | Bolt M12×130 | GB/T5780-86 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Fatigue fracture from cyclic bending loads; 2. Corrosion of zinc plating in humid environments. | 1. Conduct MPT annually to detect fatigue cracks; 2. Apply anti-rust oil to the bolt shank. |
25 | Washer 12 | GB/T93-87 | Spring Steel 65Mn (Heat-Treated) | 1. Fatigue deformation from repeated compression; 2. Corrosion of surface oxide layer. | 1. Replace washers every 6 months; 2. Apply anti-rust oil before installation. |
26 | Square head screw M12×16 | GB/T821-88 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Thread wear from repeated assembly; 2. Loosening due to vibration. | 1. Use thread lock compound; 2. Re-torque monthly using a calibrated torque wrench. |
27 | Connect pin Ⅰ | XJFH-□/□-1013 | Alloy Steel 45# (Quenched & Tempered) | 1. Wear from sliding friction with bushing; 2. Fatigue cracking from cyclic loads. | 1. Lubricate with anti-wear grease every 30 operating hours; 2. Conduct MPT annually. |
28 | Oil cup M10×1 | GB1152-79 | Carbon Steel (Body) + Rubber (Seal Ring) | 1. Seal ring aging and oil leakage; 2. Oil inlet clogging from dust. | 1. Replace seal rings annually; 2. Clean oil inlet monthly; install dust-proof cap when not in use. |
29 | Connect pin Ⅱ | XJFH-□/□-1014 | Alloy Steel 45# (Quenched & Tempered) | 1. Same as Connect pin Ⅰ; 2. Corrosion in humid environments. | 1. Same as Connect pin Ⅰ; 2. Apply anti-corrosion coating annually. |
30 | Inner unit G1 1/4″ | GB3289.26-82 | Brass H62 | 1. Thread wear from repeated assembly; 2. Corrosion from moisture. | 1. Use thread seal tape; limit disassembly times to ≤20; 2. Install air dryer. |
31 | Elbow G1 1/2″×G1 1/4″ | GB3289.2-82 | Brass H62 | 1. Crack from excessive torque during installation; 2. Corrosion in saltwater environments. | 1. Tighten with proper torque; avoid over-tightening; 2. Apply anti-corrosion coating for offshore use. |
32 | Supplying oil nut | XJFH-□/□-1010 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Thread wear from repeated oil filling; 2. Corrosion of zinc plating. | 1. Clean threads after each oil filling; 2. Apply anti-rust oil monthly. |
2. Cylinder Block Assembly Components
Cylinder block assembly components (Shell body, Crankshaft, Piston, Bearing 6211, etc.) are the "power core" of XJFH air winches, responsible for converting pneumatic energy into mechanical rotational energy to drive winch hoisting. Piston wear, crankshaft fatigue, or bearing seizure can lead to power loss, operational jamming, and even structural damage—major pain points in high-load hoisting scenarios. High-strength, wear-resistant cylinder block components ensure stable power output and load-bearing capacity, compliant with GB/T standards, suitable for high-torque (up to 500N·m) and high-vibration industrial environments, directly enhancing winch hoisting efficiency and service life.
No. | Part Name | Part Number | Material | Main Wear Causes | Preventive Maintenance Guidelines |
1 | Cylinder Block Assembly | XJFH-□/□-2000 | Alloy Steel 42CrMo (Shell Body) + Forged Steel (Crankshaft) + Alloy Cast Iron (Piston) + Bearing Steel GCr15 (Bearing 6211) | 1. Power loss due to piston ring wear and air leakage; 2. Bearing seizure from lubrication contamination by dust and metal particles. | 1. Replace piston rings every 12 months; conduct compression testing annually; 2. Use high-precision oil filters (5μm); change lubricating oil every 6 months. |
2 | Shell body | XJFH-□/□-2001 | Alloy Steel 42CrMo (Forged & Machined) | 1. Cylinder wall wear from piston movement (clearance >0.1mm); 2. Corrosion of internal surface from moisture in compressed air. | 1. Inspect cylinder wall clearance quarterly; re-hone if exceeding 0.1mm; 2. Install air dryer to maintain moisture content ≤0.1%. |
3 | Circulate ring | XJFH-□/□-2002 | Gray Cast Iron HT250 (Wear-Resistant) | 1. Abrasive wear from rotational friction; 2. Thermal deformation from uneven heating. | 1. Lubricate with high-temperature anti-wear grease every 50 operating hours; 2. Monitor operating temperature; avoid overheating. |
4 | Copper cover | XJFH-□/□-2003 | Brass H62 (High-Thermal Conductivity) | 1. Wear from sliding friction; 2. Corrosion in humid environments. | 1. Lubricate with anti-wear grease monthly; 2. Apply anti-corrosion coating annually. |
5 | Liner | XJFH-□/□-2004 | Alloy Cast Iron (Ni-Cr-Mo Alloyed, Surface Hardened) | 1. Abrasive wear from piston ring friction; 2. Scuffing from insufficient lubrication. | 1. Inspect liner wear monthly; replace if wear depth exceeds 0.2mm; 2. Ensure adequate lubrication; check oil supply system regularly. |
6 | Gasket | XJFH-□/□-2005 | Asbestos-Free Rubber (High-Temperature Resistant, Oil-Resistant) | 1. Aging and leakage from high temperature; 2. Damage from over-tightening. | 1. Replace gaskets every 6 months in high-temperature environments; 2. Tighten according to rated torque. |
7 | Bearing 6211 | GB/T276-94 | Bearing Steel GCr15 (High-Precision Rolling Elements) | 1. Seizure due to lubrication contamination; 2. Fatigue damage from high-speed rotation (rotational speed >1500r/min). | 1. Use clean, high-quality bearing grease; replace bearings every 2000 operating hours; 2. Monitor rotational speed; avoid exceeding rated speed. |
8 | Con pin | XJFH-□/□-2006 | Alloy Steel 45# (Quenched & Tempered) | 1. Wear of pin surface from sliding friction; 2. Fatigue cracking from cyclic loads. | 1. Lubricate with anti-wear grease every 30 operating hours; 2. Conduct MPT annually. |
9 | Nut M16 | GB/T6170-86 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Thread wear from high-torque tightening; 2. Corrosion in industrial dust environments. | 1. Tighten with torque wrench (follow rated torque values); 2. Clean threads regularly to remove dust. |
10 | Steel wire 25×100 | XJFH-□/□-2007 | High-Strength Carbon Steel (Galvanized) | 1. Fatigue breaking from repeated bending; 2. Corrosion of galvanized layer. | 1. Ensure minimum bending radius ≥10×wire diameter; replace if broken wires are detected; 2. Apply anti-corrosion grease monthly. |
11 | Balancing block | XJFH-□/□-2008 | Gray Cast Iron HT250 (Precision Machined) | 1. Loosening of mounting fasteners due to vibration; 2. Wear of contact surface. | 1. Re-torque mounting fasteners monthly; 2. Inspect contact surface wear quarterly; replace if needed. |
12 | Baffle | XJFH-□/□-2009 | Carbon Steel Q235B (Zinc-Plated) | 1. Deformation from impact; 2. Corrosion of zinc plating. | 1. Install anti-collision buffers; 2. Apply anti-corrosion coating annually. |
13 | Oil plug | XJFH-□/□-2010 | Carbon Steel 45# (Zinc-Plated) | 1. Thread wear from repeated oil draining; 2. Seal leakage from gasket damage. | 1. Replace gasket every 6 months; 2. Clean threads after oil draining; apply thread sealant. |
14 | Packing | XJFH-□/□-2011 | PTFE (Polytetrafluoroethylene, High-Temperature & Wear-Resistant) | 1. Wear from rotational friction; 2. Aging from high temperature (temperature >200℃). | 1. Replace packing every 6 months; 2. Monitor operating temperature; avoid exceeding 200℃. |
15 | Throwing oil plate | XJFH-□/□-2012 | Carbon Steel Q235B (Surface Painted) | 1. Wear from oil splashing; 2. Paint peeling and corrosion. | 1. Inspect wear monthly; replace if wear is severe; 2. Touch up paint annually. |
16 | Crankshaft | XJFH-□/□-2013 | Alloy Steel 42CrMo (Forged & Precision Ground) | 1. Journal wear from bearing friction; 2. Fatigue cracking from cyclic torque loads. | 1. Replace bearings every 2000 operating hours; 2. Conduct ultrasonic testing (UT) and MPT annually to detect fatigue cracks. |
17 | Cylinder cover | XJFH-□/□-2014 | Alloy Steel 40Cr (Forged & Machined) | 1. Seal leakage from gasket damage; 2. Thermal deformation from high temperature. | 1. Replace gasket every 6 months; 2. Monitor operating temperature; avoid overheating. |
18 | Gasket | XJFH-□/□-2015 | Asbestos-Free Rubber (Oil-Resistant) | 1. Wear and leakage from oil erosion; 2. Corrosion in humid environments. | 1. Replace gaskets every 12 months; 2. Inspect for leakage monthly. |
19 | Fuel ring | XJFH-□/□-2016 | Nitrile Rubber (NBR, Oil-Resistant, Shore Hardness 70±5) | 1. Aging and hardening from high-temperature oil; 2. Damage from foreign debris. | 1. Replace fuel rings every 6 months; 2. Clean the installation area before assembly. |
20 | Retainer ring 25 | GB/T893.1-86 | Spring Steel 65Mn (Heat-Treated) | 1. Fatigue deformation from repeated expansion/contraction; 2. Corrosion of surface. | 1. Replace retainer rings every 6 months; 2. Apply anti-rust oil before installation. |
21 | Air ring | XJFH-□/□-2017 | Polyurethane (PU, High-Elasticity, Air-Tight) | 1. Wear from piston movement; 2. Aging from UV exposure in outdoor operations. | 1. Replace air rings every 6 months; 2. Avoid direct sunlight; install protective cover if needed. |
22 | Piston | XJFH-□/□-2018 | Alloy Cast Iron QT500-7 (High-Strength, Wear-Resistant) | 1. Abrasive wear from cylinder wall friction; 2. Deformation from high pressure (pressure >1.6MPa). | 1. Inspect piston wear monthly; replace if wear depth exceeds 0.1mm; 2. Strictly control system pressure ≤1.6MPa. |
23 | Cylinder cover cap | XJFH-□/□-2019 | Carbon Steel Q235B (Zinc-Plated) | 1. Corrosion of zinc plating; 2. Deformation from impact. | 1. Apply anti-corrosion coating annually; 2. Handle with care during maintenance. |
24 | Piston pin | XJFH-□/□-2020 | Alloy Steel 40Cr (Precision Ground, Surface Hardened) | 1. Wear from sliding friction with piston and connecting rod; 2. Corrosion from moisture. | 1. Lubricate with anti-wear grease every 30 operating hours; 2. Apply anti-corrosion oil monthly. |
25 | Connecting rod | XJFH-□/□-2021 | Alloy Steel 42CrMo (Forged & Machined) | 1. Bushing wear from rotational friction; 2. Fatigue cracking from cyclic bending loads. | 1. Replace bushings every 12 months; 2. Conduct MPT annually to detect fatigue cracks. |
26 | Bolt M16×30 | GB/T825-88 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Fatigue fracture from vibration; 2. Corrosion of zinc plating. | 1. Install spring washers to absorb vibration; conduct MPT annually; 2. Apply anti-rust oil. |
27 | Washer 16 | GB/T97.1-85 | Carbon Steel Q235B (Zinc-Plated) | 1. Deformation from over-tightening; 2. Corrosion of zinc plating. | 1. Tighten according to rated torque; 2. Apply anti-corrosion paint to exposed areas. |
28 | Respirator element | XJFH-□/□-2100 | Stainless Steel 304 (Filter Mesh) + Plastic (Housing) | 1. Clogging from dust and oil mist; 2. Damage to filter mesh from impact. | 1. Clean filter mesh monthly; replace every 6 months; 2. Install protective cover to avoid impact. |
29 | Bolt M16×40 | GB/T5780-86 | Carbon Steel 8.8 Grade (Zinc-Plated) | 1. Fatigue fracture from cyclic loads; 2. Corrosion of zinc plating in humid environments. | 1. Conduct MPT annually; 2. Apply anti-rust oil to the bolt shank. |
30 | Washer 16 | GB/T97.1-85 | Carbon Steel Q235B (Zinc-Plated) | 1. Same as above; 2. Wear from repeated assembly. | 1. Same as above; 2. Replace washers every 6 months. |
31 | Rivet | XJFH-□/□-2022 | Aluminum Alloy (Lightweight, Corrosion-Resistant) | 1. Shear failure from impact; 2. Corrosion in saltwater environments. | 1. Avoid impact loads; 2. Apply anti-corrosion coating for offshore use. |
32 | Rivet 2×3 | GB/T827-86 | Aluminum Alloy | 1. Shear failure from overload; 2. Corrosion of surface. | 1. Strictly comply with load limits; 2. Inspect for corrosion monthly. |
33 | Name plate | XJFH-□/□-2023 | Stainless Steel 304 (Etched, Anti-Rust) | 1. Fading of etched characters from UV exposure; 2. Scratching from impact. | 1. Apply UV-resistant coating; 2. Install protective cover to avoid scratching. |
Conclusion
This XJFH Air Winch Parts Catalog serves as a dual reference standard for both procurement and technical support, comprehensively presenting the core components, specifications, material properties, wear causes, and preventive maintenance guidelines of XJFH series air winches, with a focus on the two key assemblies of distributing valve and cylinder block. For procurement professionals, all parts listed in this catalog strictly comply with GB/T standards and are 100% compatible with XJFH series air winches, providing a reliable basis for accurate part selection and procurement. For maintenance and operation teams, the detailed wear analysis and preventive maintenance guidelines in the catalog offer actionable solutions to resolve common technical issues such as air control inefficiency, power transmission failure, and seal leakage, effectively ensuring the stable operation of equipment. We warmly recommend you choose authentic XJFH air winch parts through official authorized channels to guarantee the reliability and durability of your equipment. For procurement inquiries, technical consulting, or customized part needs, please feel free to contact our official service team. Choosing XJFH authentic parts is choosing safety, efficiency, and long-term value for your hoisting operations.
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