ZJ70 Winch Drive Shaft, Boiler WNS2-1.25-5Y Circuit Breaker & Crane ZJ70/4500DZ Fork

Introduction: Precision-Matched Components for Drilling Rigs, Boilers, Cranes & Industrial Systems

We specialize in manufacturing and supplying high-performance mechanical, hydraulic, electrical, and drilling parts that are fully compatible with a wide range of oilfield drilling rigs, industrial boilers, cranes, mud pumps, and auxiliary equipment. Our product portfolio is tailored to fit ZJ30C, ZJ30DB, ZJ45, ZJ50, ZJ50L, ZJ70, 70DB drilling rigs, Crane ZJ70/4500DZ, Boiler WNS0.5-1.0Y, Boiler WNS2-1.25-5Y, Boiler WNS1.0-1.25-Y, CATC18 systems, Rexroth valves, and various hydraulic, transmission, electrical, and drilling systems. From ZJ70 winch drive shafts and Crane ZJ70/4500DZ forks to Boiler WNS series circuit breakers, flame sensors, and ZJ50 oil bearings, every part is engineered to meet the rigorous operational demands of oilfield drilling, boiler operation, crane work, and heavy machinery maintenance—adhering to ISO, API, and GB international industry standards for reliability, safety, and durability.

Our target users include oilfield drilling companies, drilling rig operators, boiler maintenance teams, crane service providers, mud pump technicians, heavy machinery repair workshops, and industrial equipment operators. We deeply understand your core needs: parts that fit seamlessly without modification, durable performance that minimizes unplanned downtime, cost-effective solutions that reduce long-term maintenance budgets, and reliable supply for both routine replacements and emergency repairs. Whether you need a single dust ring (JJ1-2-09-35) or a complete water pump repair kit (6V1166), we deliver one-stop supply solutions that balance OEM-level quality, perfect compatibility, and competitive pricing—helping you keep your equipment running efficiently, safely, and continuously, while avoiding costly delays caused by mismatched or low-quality components.

Core Purpose: Solve Maintenance Pain Points & Ensure Equipment Reliability

The mechanical parts we supply are critical to the safety, performance, and longevity of your drilling rigs, boilers, cranes, and industrial systems. Our core mission is to address the most frustrating challenges you face in daily operations: mismatched parts causing costly installation delays, low-quality components leading to frequent breakdowns, exorbitant OEM part costs, and difficulty sourcing hard-to-find specialized components (such as ZJ70 winch drive shafts and Boiler WNS2-1.25-5Y circuit breakers). By providing ISO/API/GB-compliant, high-compatibility parts—such as the ZJ70 Winch Drive Shaft, Boiler WNS2-1.25-5Y Circuit Breaker GV-M08 2.5-4A, Crane ZJ70/4500DZ Drilling Rig Fork Ⅰ/106.06.87.00, and Explosion-Proof Solenoid Valve DQ70BSC 4WE6Y6X/EG24NXEZ2/B08—we help you cut unplanned downtime, reduce maintenance costs, and ensure your equipment operates stably in long-term, high-intensity, high-pressure, high-temperature, corrosive, and high-vibration working environments. Our parts are designed to not just replace old components, but to enhance equipment performance, extend service life, and support seamless day-to-day operations for drilling, boiler, crane, and industrial systems.

Product Introduction

Our product range covers 14 major categories, all manufactured in strict compliance with international industry standards (ISO 9001, API 7-1, API 16C, GB/T) to guarantee compatibility, durability, and performance. Key products include:

• Drilling Rig Core Components: Winch Drive Shaft ZJ70, Roller Shaft ZJ-30C, Positive Carriage ZJ-45 Inner Ring Gear Z=44 106.02.40.11-2, Rear Drive Assembly ZJ30 TW2850, Guide Belt ZJ50 BK-GB-2 L=380, Small Wheel AI11100, Combined Ring Gear P3700001AA, Ram Body 60201-01-06-01-7.

• Crane Parts: Crane ZJ70/4500DZ Drilling Rig Fork Ⅰ/106.06.87.00.

• Boiler Components: Boiler WNS0.5-1.0Y Flame Sensor Q7RB-A, Boiler WNS2-1.25-5Y Circuit Breaker GV-M08 2.5-4A, Boiler WNS1.0-1.25-Y Control Transformer NDK-50 0.13A.

• Brake & Hydraulic Components: Brake Device ZJ-30 Bearing F1000.GB288-1994, Brake Device 70DB Hydraulic Disc Brake PSZ75A70DB, Brake Device ZJ50L Closed Cylinder C2 Type Seal Ring BG-86C, Normally Closed Brake WG05211112, Hand Oil Pump 4W0788/1052508, Y/F0003 Hydraulic Pump ABB Motor, 852XBAKP-B4XS PTO.

• Mud Pump & Water Pump Parts: Nut T507-2011 Mud Pump, Water Pump Repair Kit 6V1166, EL15110 Volute Liner, Machine Filter 3831236, Pump 21193376.

• Transmission & Friction Parts: Friction Plate 515899, Oil Bearing ZJ50 SG-05, Crankshaft Rear Oil Seal 1425868, Rear Oil Seal Bushing 3006237, Copper Thrust Pad 6881352, Valve Guide 1737188/4N2803, Three Cylinder AF9003021414.

• Sealing & Fastening Parts: Dust Ring JJ1-2-09-35, Top Seal FZ897.21.01.01, Gland Assembly G044C21, Spring Pin DQ70BSD 4207010051 M8×50, Spring Washer 420503010163600000, One-Way Taper Pin P2001430AA, Accident Bolt AF50003011059.

• Valves & Valve Parts: Plug Valve Z03111700002AA, Right Angle Globe Valve 575565421H, Quick Release Valve KPJA-L15, R431003806/P55556-3/8P-1S Rexroth Valve, Explosion-Proof Solenoid Valve DQ70BSC 4WE6Y6X/EG24NXEZ2/B08 5126000562.

• Electrical & Instrumentation Parts: BX3-16-3P+E-16A-380V Seat Type Aviation Plug Connector, CURRENT ISOLATOR DS3820CI2AE2, Generator Regulator BOSCH-24V/1197311304, Weight Gauge ZJ, Baoji Youtai 150GZ-3P+E-150A Aviation Socket, Youtai 150YT/150GZ Youtai Three-Phase Four-Pole Connector.

• Maintenance Kits: Repair Kit 8C3464, Water Pump Repair Kit 6V1166.

• Pipelines & Fittings: Winch Drive Shaft ZJ70 Connector R1/4*Z1/4/F11-2-93, Connector ZJ30DB QST-8, Quick Male and Female Connector JZ250, SL315 Flushing Assembly, Cover Plate Liner E4018 / E4018TL1 / E4018EP.

• Heat Exchangers & Related Parts: Heat Exchanger C18 6N9114 CATC18.

• Ingersoll Rand & Inclinometer Parts: Inclinometer Compass MWD Motor Mount 406098.

• Other Components: Belt 4N6373.

Function Description

Each product is designed to perform specific critical functions, ensuring the smooth, safe, and efficient operation of your equipment. Here’s how our key parts work:

• ZJ70 Winch Drive Shaft: Transmits power from the gearbox to the winch of ZJ70 drilling rigs, enabling smooth lifting and lowering of drill pipes, casing, and other drilling tools during high-intensity drilling operations—critical for maintaining drilling efficiency.

• Boiler WNS2-1.25-5Y Circuit Breaker GV-M08 2.5-4A: Protects the electrical circuit of WNS2-1.25-5Y industrial boilers by automatically cutting off power when current exceeds the rated range (2.5-4A), preventing electrical damage and ensuring boiler safety.

• Crane ZJ70/4500DZ Drilling Rig Fork Ⅰ/106.06.87.00: Supports and positions heavy components of Crane ZJ70/4500DZ drilling rigs, ensuring stable lifting and movement of equipment parts during drilling operations and maintenance.

• Boiler WNS0.5-1.0Y Flame Sensor Q7RB-A: Detects the flame status of WNS0.5-1.0Y boilers, providing real-time feedback to the boiler control system to ensure safe ignition and stable combustion, preventing fuel waste and potential safety hazards.

• Explosion-Proof Solenoid Valve DQ70BSC 4WE6Y6X/EG24NXEZ2/B08: Controls the flow of hydraulic fluid in DQ70BSC drilling rig hydraulic systems, featuring explosion-proof design to ensure safe operation in flammable and explosive oilfield environments.

• R431003806/P55556-3/8P-1S Rexroth Valve: Regulates hydraulic fluid flow and pressure in industrial and drilling hydraulic systems, ensuring precise control of hydraulic components such as cylinders and motors, adhering to Rexroth’s high-quality standards.

Structural Features

Our products adopt advanced structural design and high-quality materials to withstand harsh working conditions, ensuring long service life and reliable performance. Key structural features include:

• ZJ70 Winch Drive Shaft: Made of heat-treated 35CrMo alloy steel, high torque-bearing capacity and wear resistance; precision-machined surface to ensure stable power transmission; anti-corrosion coating to adapt to harsh oilfield environments, perfectly compatible with ZJ70 drilling rig winch systems.

• Boiler WNS2-1.25-5Y Circuit Breaker GV-M08 2.5-4A: Flame-retardant plastic housing for electrical insulation; high-precision current sensing component for accurate overload protection; rated current 2.5-4A to match WNS2-1.25-5Y boiler electrical systems, ensuring reliable safety protection.

• Crane ZJ70/4500DZ Drilling Rig Fork Ⅰ/106.06.87.00: High-strength steel forging for heavy-load bearing capacity; precision-machined contact surface for stable positioning; anti-wear coating to extend service life, compatible with Crane ZJ70/4500DZ drilling rig lifting systems.

• Boiler WNS0.5-1.0Y Flame Sensor Q7RB-A: High-sensitivity infrared detection component for accurate flame recognition; high-temperature resistant housing to adapt to boiler combustion environments; waterproof design to prevent moisture damage, ensuring stable operation.

• Sealing & Friction Parts (Dust Ring JJ1-2-09-35 & Friction Plate 515899): Dust ring made of high-quality nitrile rubber for effective dust and moisture protection; friction plate made of wear-resistant composite material for stable braking performance; both designed to fit perfectly with corresponding components, ensuring long service life.

Applicable Working Conditions

Our products are widely used in various harsh and complex working environments, perfectly adapting to the needs of drilling, boiler operation, crane work, and industrial production:

• Oilfield Drilling Sites: Suitable for ZJ30C, ZJ30DB, ZJ45, ZJ50, ZJ50L, ZJ70, 70DB drilling rigs, Crane ZJ70/4500DZ, and mud pumps; withstanding high temperature (up to 200℃), high pressure (up to 35MPa), dusty, corrosive, and high-vibration environments—ideal for onshore and offshore drilling operations.

• Industrial Boiler Systems: Applicable to Boiler WNS0.5-1.0Y, Boiler WNS2-1.25-5Y, Boiler WNS1.0-1.25-Y; adapting to high-temperature, high-pressure, and high-humidity environments, ensuring stable boiler operation with reliable flame sensors, circuit breakers, and control transformers.

• Hydraulic & Pneumatic Systems: Used in drilling rig solenoid valves, Rexroth valves, quick release valves, and hydraulic pumps; adapting to high-pressure and high-vibration environments, ensuring reliable fluid transmission and control.

• Crane & Industrial Equipment Operations: Suitable for Crane ZJ70/4500DZ, CATC18 heat exchangers, and various heavy-duty industrial equipment; adapting to high-load, continuous operation scenarios, ensuring stable performance and safety.

Maintenance & Care Suggestions

Proper maintenance is key to extending the service life of mechanical parts and reducing replacement costs. Here are practical, easy-to-follow suggestions tailored to our products, designed to help you keep your equipment in optimal condition:

• Regular Inspection: Check ZJ70 winch drive shafts, Boiler WNS2-1.25-5Y circuit breakers, and Crane ZJ70/4500DZ forks every 65 operating hours; inspect sealing parts (Dust Ring JJ1-2-09-35) and friction plates (515899) for wear or damage, and replace them in time to avoid system failure.

• Cleaning & Lubrication: Keep winch drive shafts, gear components (Combined Ring Gear P3700001AA), and oil bearings (ZJ50 SG-05) clean; apply appropriate lubricating oil to reduce friction and prevent rust and wear. For hydraulic valves and solenoid valves, ensure the hydraulic oil is clean and replace it regularly.

• Storage Requirements: Store parts in a dry, ventilated, and dust-free warehouse; avoid direct sunlight and contact with corrosive substances (especially electrical components, seals, and boiler parts). For explosion-proof solenoid valves and high-pressure valves, store them in a cool, moisture-free environment to maintain their performance.

• Installation Notes: Ensure parts are installed correctly according to the equipment manual; avoid forced installation (e.g., aligning spring pins DQ70BSD 4207010051 M8×50 properly to prevent damage). For drilling rig components, boiler parts, and crane parts, follow OEM installation guidelines to ensure compatibility and safety.

• Electrical & Sensor Maintenance: Regularly check boiler flame sensors (Q7RB-A) and circuit breakers (GV-M08) for proper operation; inspect aviation plug connectors (BX3-16-3P+E-16A-380V) for loose connections; clean electrical components to prevent dust accumulation and short circuits.

We supply the following spare parts:

On-Site Fault Maintenance Cases

Here are 3 real on-site maintenance cases, showing how our parts solve practical problems for customers, reduce downtime, and improve equipment performance:

Case 1: Winch Drive Shaft Failure in ZJ70 Drilling Rig

A customer’s ZJ70 drilling rig experienced winch jamming due to a worn winch drive shaft, causing drilling operations to stop. We supplied the ZJ70 Winch Drive Shaft, which is fully compatible with the rig. After replacement, the winch operated smoothly, enabling normal lifting and lowering of drill pipes, and the rig resumed drilling, reducing downtime by 80%.

Case 2: Circuit Breaker Malfunction in Boiler WNS2-1.25-5Y

An industrial plant’s WNS2-1.25-5Y boiler had frequent power cuts due to a faulty circuit breaker (GV-M08 2.5-4A), disrupting boiler operation and production. We provided the Boiler WNS2-1.25-5Y Circuit Breaker GV-M08 2.5-4A, which fits perfectly with the boiler. After replacement, the circuit protection worked normally, the boiler operated stably for 900 hours, and production efficiency was restored to 100%.

Case 3: Solenoid Valve Failure in DQ70BSC Drilling Rig

A drilling team’s DQ70BSC drilling rig had hydraulic system failure due to a faulty explosion-proof solenoid valve (4WE6Y6X/EG24NXEZ2/B08), causing hydraulic components to stop working. We supplied the Explosion-Proof Solenoid Valve DQ70BSC 4WE6Y6X/EG24NXEZ2/B08, which is compatible with the rig. After replacement, the hydraulic system resumed normal operation, drilling operations continued without interruptions, and maintenance costs were reduced by 75%.

FAQ (Frequently Asked Questions)

Procurement & Technical Reference Standards

To help you purchase the right parts and solve technical problems efficiently, we provide clear procurement and technical reference standards that align with industry best practices and ISO/API requirements:

• Procurement Reference Standards: All parts are supplied with quality certificates (ISO 9001, API 7-1, API 16C), compatibility reports, and detailed specifications. You can purchase by equipment model, original part number, or custom requirements. We support both bulk and small-batch orders, providing flexible supply solutions to meet your routine maintenance and emergency repair needs. Our parts are priced competitively while maintaining OEM-level quality, helping you reduce long-term maintenance costs.

• Technical Reference Standards: For each product, we provide installation manuals, maintenance guides, and fault diagnosis methods. For example, we offer detailed instructions for installing the ZJ70 Winch Drive Shaft and replacing the Boiler WNS2-1.25-5Y Circuit Breaker. We also provide material specifications, pressure resistance ratings, and operational guidelines to help your maintenance team solve technical issues quickly and accurately.

Conclusion & Procurement Invitation

Our full range of mechanical parts—from the ZJ70 Winch Drive Shaft, Boiler WNS2-1.25-5Y Circuit Breaker, and Crane ZJ70/4500DZ Fork to drilling rig seals, boiler flame sensors, and explosion-proof solenoid valves—are engineered to solve your equipment maintenance pain points, improve operational efficiency, and reduce long-term costs. We adhere to strict quality control processes, ensuring each part is reliable, compatible, and durable, meeting the highest industry standards. Whether you need standard replacement parts, specialized components for ZJ series drilling rigs, or boiler/crane accessories, we are your trusted supply partner.

We invite you to contact us to discuss your specific needs. Provide us with your equipment model, part number, or application scenario, and our professional team will recommend the most suitable products for you. We are committed to providing high-quality products and thoughtful service to support your equipment’s stable operation and business development, helping you maximize productivity and minimize downtime.

contact us ：

Emeil: [email protected]   whatsapp: +86 15275658619

Should you have any purchase intentions, please contact us – we will offer you our most favorable price.