Core Purpose & Equipment Adaptation
This guide is dedicated to the XJFH Series Pneumatic Winches, including models XJFH-3/35, XJFH-8/25, XJFH-10/20, and the modular XJFH-□/□ series (distributing assembly, cylinder block assembly, etc.). It caters to the specific needs of oilfield operators, mining engineers, maintenance technicians, and procurement teams—focusing on reliable load handling, precise control, and durable performance of pneumatic winches in harsh industrial environments. All components comply with GB/T (Chinese National Standard) and API 8C (American Petroleum Institute) standards, ensuring seamless compatibility with on-site winch systems and adherence to industrial safety regulations for load lifting and pulling operations.
Product Overview
The XJFH Series Pneumatic Winches are modular-designed heavy-duty equipment, consisting of five core assemblies: Distributing Assembly (XJFH-□/□-1000), Cylinder Block Assembly (XJFH-□/□-2000), Gear Drive Assembly (XJFH-□/□-3000), Reel Assembly (XJFH-□/□-4000(a)), and Brake Assembly (XJFH-□/□-5000(x)). Each assembly integrates precision-manufactured parts—from distributing valves and crankshafts to clutches and brake systems—engineered to work in tandem for smooth power transmission, load control, and emergency braking. The winches are available in single/double-brake configurations and 130/135mm cylinder specifications, adapting to different load capacities (3t to 10t) and operational requirements.
Functional Features
The XJFH Series Winches deliver three key functional advantages: First, the distributing assembly (with precision valve cores and torsion springs) ensures stable air pressure control, enabling stepless adjustment of lifting/pulling speed to match load weights. Second, the gear drive assembly features hardened gears and sealed bearings, maximizing power transmission efficiency while minimizing noise and wear. Third, the multi-type brake assembly (single, double, three-brake) provides reliable load holding—manual and pneumatic control options (paired with 100×150 series air cylinders) ensure quick response in emergency stop scenarios. Additionally, the reel assembly’s hollow shaft and inner gear ring design enables uniform cable winding, preventing cable tangling and extending wire rope service life.
Structural Characteristics
The winches adopt a modular, corrosion-resistant structure optimized for heavy-duty use: Cylinder blocks (130/135mm) are made of high-strength cast iron (HT250) for pressure resistance, with copper covers and nitrile rubber oil seals to prevent oil leakage. Gear components (gears, spline shafts) undergo carburizing and quenching treatment (HRC 58-62) to enhance wear resistance, complying with GB/T 3480.1 standards. The brake assembly uses high-friction brake pads and stainless steel pins for stable performance in humid environments. All threaded connections (M16, M20, M42×2) feature precision machining, and retaining rings (GB/T 893.1) ensure component stability under vibration. The modular design allows on-site disassembly of individual assemblies, reducing maintenance time and labor costs.
Applicable Working Conditions
These pneumatic winches are tailored for harsh industrial scenarios, including onshore oilfields (well workover, pipe handling), open-pit mines (material lifting), construction sites (heavy component positioning), and offshore platforms (light load handling). They operate reliably in temperature ranges of -20℃ to 60℃, withstanding dust, humidity, and continuous vibration. The winches are compatible with pneumatic systems rated at 0.4-0.6MPa, adapting to both indoor and outdoor operations. The 130/135mm cylinder variants and single/double-brake configurations make them suitable for load capacities from 3t (XJFH-3/35) to 10t (XJFH-10/20), meeting diverse operational needs.
Maintenance & Care Recommendations
Follow these practices to extend winch service life and ensure operational safety: Inspect gear oil levels weekly using the M27×1.5 oil gauge—replenish with 46# industrial gear oil (GB/T 30582) when levels fall below the minimum mark. Lubricate bearing points (6211, 6307 bearings) and clutch components monthly with lithium-based grease (NLGI Grade 2), using the M10×1 oil cup for precise application. Check brake pads for wear quarterly—replace when thickness is less than 3mm to maintain braking efficiency. Tighten bolts (M12, M16, M20) and nuts regularly, torquing M20 bolts to 180N·m per GB/T 5277 standards. Clean distributing valve cores and air passages every 6 months to prevent blockages from dust and oil residues. Store spare parts in a dry, ventilated environment to avoid rust and elastomer aging.
XJFH-□/□-1000 Distributing Assembly 1 XJFH-□/□-1001 Distributing valve body 2 XJFH-□/□-10002 Assigning valve cover 3 GB/T1096-79 Key 6×18 4 XJFH-□/□-1003 Assigning valve 5 XJFH-□/□-1004 Torsion spring 6 XJFH-□/□-1005 Adjusting bolt 7 XJFH-□/□-1006 Connecting rod 8 GB/T880-86 Pin 10×45 9 GB/T91-86 Pin 3×20 2 10 XJFH-□/□-1007 Spindle 11 XJFH-□/□-1008 Spring 12 XJFH-□/□-1009 Lever 13 XJFH-□/□-1010 Nut M42×2 14 XJFH-□/□-1100 Air valve 15 GB308-89 Steel boll ф13 16 XJFH-□/□-1011 Distributing valve cover 17 GB3289.26-82 Inner unit G1 1/2″ 18 GB3289.2-82 Elbow G1 1/2″ 19 XJFH-□/□-1015 Gasket 20 GB/T71-85 Screw M6×18 21 XJFH-□/□-1012 Distributing valve cleeve 22 XJFH-□/□-1016 Gasket 23 XJFH-□/□-1200 Distributing valve core 24 GB/T5780-86 Screw M12×140 25 GB/T93-87 Washer 26 XJFH-□/□-1013 Connect pin Ⅰ 27 XJFH-□/□-1014 Connect pin Ⅱ
XJFH-□/□-2000 Cylinder Block Assembly 1 XJFH-□/□-2001 Shell body（130） XJFH-□/□-2001a Shell body（135） 2 XJFH-□/□-2002 Circulate ring 3 XJFH-□/□-2003 Copper cover 4 XJFH-□/□-2004 Liner 1 XJFH-□/□-2018a Piston（135） 5 GB/T276-94 Bearing 6211 6 XJFH-□/□-2006 Con pin 7 GB/T6170-86 Nut M16 8 GB/T91-1986 Pin 3.2x30 9 XJFH-□/□-2008 Balancing block 10 Oil gauge M27x1.5 11 XJFH-□/□-2009 Baffle 12 XJFH-□/□-2010 Oil plug 13 GB/T982-77 Washer 14 14 XJFH-□/□-2012 Throwing oil plate 15 XJFH-□/□-2013 Crankshaft 16 XJFH-□/□-2014 Cylinder cover（130） XJFH-□/□-2014a Cylinder cover（135） 17 XJFH-□/□-2015 Gasket 18 XJFH-□/□-2016 Fuel ring（130） XJFH-□/□-2016a Fuel ring（135） 19 GB/T893.1-86 Retainer ring 20 XJFH-□/□-2017 Air ring（130） XJFH-□/□-2017a Air ring（135）
21 XJFH-□/□-2018 Piston（130）
22 XJFH-□/□-2019 Cylinder cover cap（130）
XJFH-□/□-2019a Cylinder cover cap（135） 23 XJFH-□/□-2020 Piston pin 24 XJFH-□/□-2021 Connect rod 25 GB/T825-88 Bolt M16×30 26 XJFH-□/□-2024 Packing δ1 27 XJFH-□/□-2102 Blow cover 28 GB/T70-86 Bolt M16×40 29 GB/T93-87 Washer 16 30 GB/T5781-86 Bolt M16×35 30/10 130 用30;135:用10; 31 Washer 16 32 XJFH-□/□-1010 Supplying oil nut 33 GB/T827-86 Rivet 2×3 34 XJFH-□/□-2023 Name plate
XJFH-□/□-3000 Gear Drive Assembly 1 XJFH-□/□-3001 Left mounting bracket 2 GB/T86-88 Screw M12×60 3 GB276-94 Antifriction bearing 6208-z 4 GB/T5780-86 Bolt M12×30 5 GB/T93-87 Washer 12 6 XJFH-□/□-3002 Gear XJFH-□/□-3002a Gear 1 7 GB/T1096-79 Key 12×50 8 XJFH-□/□-3021 Nameplate of clutch 9 GB/T827-86 Rivet 2×3 10 XJFH-□/□-3003 End cover 11 XJFH-□/□-3004 Spline shaft 12 XJFH-□/□-3005 Gear XJFH-□/□-3005a Gear 13 XJFH-□/□-3006 Clutch shaft 14 XJFH-□/□-3007a Clutch lever 15 XJFH-□/□-3008 Positioning axle 16 XJFH-□/□-3009 Spring pin 17 XJFH-□/□-3020 Spring 18 GB1152-79 Oil cup M10×1 19 GB/T5781-86 Bolt M10×90 20 GB/T93-87 Washer 10 21 XJFH-□/□-3010 Screw 22 XJFH-□/□-3011 Clutch axle 23 XJFH-□/□-3012 Clutch wheel 24 XJFH-□/□-3013 Gear shaft 25 GB/T812-88 Nut M35×1.5 26 GB/T858-88 Washer 35 27 GB/T276-94 Antifriction bearing 6307 28 XJFH-□/□-3017 Clutch wheel 29 GB/T894.1-86 Retainer ring 48 30 XJFH-□/□-3016 Bush 31 GB/T276-94 Bearing 6310-2z 32 XJFH-□/□-3018 Oil drain plug 33 JB982-77 Washer 27
XJFH-□/□-4000(a) Reel Assembly 1 XJFH-□/□-4001 Right mounting bracket 2 XJFH-□/□-4002 Reel 1 Single-brake XJFH-□/□-4002a Double-brake 3 GB/T283-94 Antifriction bearing 42114 4 GB/T78-85 Screw M10×20 5 GB/T276-94 Bearing 6211-2z 6 XJFH-□/□-4003 Hollow shaft 7 HG4-692-67 Oil seal PD 38×50×12 8 XJFH-□/□-4006 Retainer ring Ⅱ 9 XJFH-□/□-4004 Retainer ring Ⅰ 10 GB/T893.1-86 Retainer ring 110 11 GB1102-74 Wire cable 6×19-15.5-170 12 GB/T78-85 Screw M16×30 13 GB/T5780-86 Bolt M20×90 GB/T5780-86 Bolt M20×120 14 GB/T93-87 Washer20 15 GB6170-86 Nut M20 16 XJFH-□/□-4005 Inner gear ring 17 GB/T80-85 Screw M12×30 18 GB/T80-85 Screw M12×50
XJFH-□/□-5000(x) Brake Assembly 1 XJFH-□/□-5500 Brake assembly 2 GB/T882-86 Pin 16×45 3 XJFH-□/□-5003 Loose joint bolt 4 XJFH-□/□-5004 Tie rod 5 GB/T75-85 Screw M6×12 6 XJFH-□/□-5005 Pin 7 GB/T1096-79 Key 6x18 8 GB/T882-86 Pin 12×65 9 XJFH-□/□-5006a Hand lever 10 XJFH-□/□-5007 Spring 11 XJFH-□/□-5008 Spring seat 12 XJFH-□/□-5009 Bolt 13 GB/T91-86 Pin 3.2×30 14 GB/T5781-86 BoltM12x30 15 GB/T96-85 Washer 12
1 XJFH-□/□-5000x Brake assembly 2 GB/T880-86 Pin 12×70 3 XJFH-□/□-5003 Loose joint bolt 4 XJFH-□/□-5004 Tie rod 5 XJFH-□/□-5005 Pin 6 GB/T882-86 Pin 16×45 7 XJFH-□/□-5006b Tie rod 8 XJFH-□/□-9711 Tie rod 2 9 XJFH-□/□-9710 Tie rod 1 10 Air cylinder series100×150
XJFH-□/□-5000e Three- Brake Assembly 1 XJFH-□/□-5600 Brake assembly 2 GB/T91-86 Pin 3.2×30 3 GB/T882-86 Pin 16×45 4 XJFH-□/□S-9001b Tie rod 1 L=260 5 GB/T5781-1986 Bolt M12x30 6 GB/T96-1985 Washer 12 7 GB/T6170-1986 Nut M20 8 XJFH-□/□S-9710a Tie rod 1a 9 XJFH-□/□S-9711a Tie rod 2a 10 XJFH-□/□S-9400c Welding Tie rod 1 1 60、0° 11 GB/T1096-1979 Key 10x35 12 XJFH-□/□S-9004 Supporting 13 GB/T1152-79 Oil cup M10×1 14 XJFH-□/□S-9003d Axle 1 855 15 XJFH-□/□S-9008 Pad 16 GB/T5781-1986 Bolt M10x20 17 GB/T93-1987 Washer 10 18 XJFH-□/□S-9500 Welding Tie rod 2 1 L=275 19 XJFH-□/□S-9711 Tie rod 2 20 XJFH-□/□S-9710 Tie rod 1 21 Air cylinder series100×150 22 Joint 1 M12×1.25-1/8 23 Joint 1 M12×1.25-1/4 24 J Model Rubber pipe 25 BSLM-03 Silencer 3/8 26 XJFH-□/□S-9300 Welding stand 2 27 XJFH-□/□-9714 Pin 1 ψ16、50 28 XJFH-□/□-9400d Welding Tie rod 1 29 XJFH-□/□S-9500 Welding Tie rod 2 30 XJFH-□/□S-9005 Connecting ear 31 XJFH-5/35S-9006 Tie rod 3 32 XJFH-□/□S-9600b Welding footboard 33 XJFH-□/□S-9007 Pin 34 XJFH-□/□S-9009 Welding stand of footboard
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Field Fault Repair Cases
Case 1: Gear Drive Noise & Vibration (XJFH-8/25 Winch)
Symptom: Abnormal noise and excessive vibration from the gear drive assembly during operation. Root Cause: 6307 antifriction bearing worn due to insufficient lubrication, causing gear misalignment. Repair: Replaced the bearing with a genuine GB/T 276-94 6307 model, applied lithium grease, and realigned the gear shaft. Preventive Measure: Lubricate bearing points monthly and inspect oil levels weekly to avoid dry friction.
Case 2: Brake Failure (XJFH-10/20 Double-Brake Winch)
Symptom: Brake assembly failed to hold load, with slippage during lifting. Root Cause: Brake pads worn out and torsion spring (XJFH-□/□-5007) fatigued, reducing braking force. Repair: Replaced brake pads and spring, adjusted the tie rod (XJFH-□/□-5004) to ensure proper brake clearance. Preventive Measure: Inspect brake pads and springs quarterly, replace pads when wear exceeds 3mm.
Case 3: Oil Leakage from Cylinder Block (XJFH-3/35 Winch)
Symptom: Oil leakage around the cylinder block shell (XJFH-□/□-2001) and copper cover. Root Cause: Oil seal (PD 38×50×12) degraded by high temperature and dust, failing to seal effectively. Repair: Replaced the oil seal with a genuine HG4-692-67 model, cleaned the sealing surface, and refilled with 46# gear oil. Preventive Measure: Clean the cylinder block exterior monthly and replace oil seals annually or when leakage is detected.
Case 4: Distributing Valve Blockage (XJFH-8/25 Winch)
Symptom: Winch speed unadjustable, with uneven lifting/pulling motion. Root Cause: Distributing valve core (XJFH-□/□-1200) blocked by oil residues and dust, restricting air flow.Repair: Disassembled the distributing assembly, cleaned the valve core with diesel, and reinstalled with a new gasket (XJFH-□/□-1015). Preventive Measure: Install a pre-filter in the pneumatic supply line and clean the valve core every 6 months.
FAQ
Question | Answer |
Can 130mm and 135mm cylinder components (e.g., pistons, cylinder covers) be interchanged? | No. 130mm and 135mm components (e.g., XJFH-□/□-2018 piston vs. 2018a) have different diameters and mounting dimensions. Interchange causes poor sealing, cylinder damage, and violates GB/T 10862 standards. Use model-specific components only. |
What type of gear oil is suitable for the XJFH series winches? | Use 46# industrial gear oil conforming to GB/T 30582. This oil provides sufficient lubrication for gear drives and cylinder blocks in temperature ranges of -20℃ to 60℃. Avoid mixing different oil grades to prevent component wear. |
How to diagnose a faulty clutch in the gear drive assembly? | Signs include difficulty engaging/disengaging the winch, slipping under load, or abnormal noise. Disassemble the gear drive assembly, inspect the clutch wheel (XJFH-□/□-3012) and spring (3020) for wear or deformation. Replace worn parts and lubricate the clutch axle before reinstallation. |
What is the maximum operating pressure for the XJFH series winches? | The winches are designed for a maximum pneumatic operating pressure of 0.6MPa. Exceeding this pressure damages the distributing valve, air cylinder, and seals, leading to premature failure and safety hazards. |
How often should the wire rope (6×19-15.5-170) be replaced? | Replace the wire rope every 12 months or when visible damage (e.g., broken strands, corrosion, diameter reduction by ≥10%) is detected—complying with GB 8918 standards. Inspect the rope weekly for wear and lubricate monthly with wire rope grease. |
Procurement Guidance
Genuine XJFH Series Pneumatic Winch components are essential to maintaining operational safety, load capacity, and long-term reliability. Our parts fully comply with GB/T and API 8C standards, with strict quality control and material traceability—ensuring perfect compatibility with XJFH-3/35, XJFH-8/25, XJFH-10/20, and modular assemblies. We supply all model-specific components, from valves and bearings to brake pads and wire ropes, backed by professional technical support to resolve on-site faults and optimize maintenance schedules. Choosing authentic parts minimizes downtime, avoids costly system failures, and ensures compliance with industrial safety regulations. Contact our team to source the right components for your XJFH series pneumatic winch, tailored to your operational load and environmental needs.
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