Parts for ZJ40/ZJ50D/ZJ70/ZJ70DB Drills, WNS1.0-1.25-YQ/EO-150 Boilers (ZP375, FKQ1280-7, HJ437G)

Introduction

We specialize in manufacturing and supplying high-precision, OEM-compatible industrial spare parts, engineered to fit and optimize the performance of a wide range of heavy-duty industrial equipment across oil drilling, boiler systems, and heavy machinery sectors. Our comprehensive product portfolio covers core components for ZJ series drilling rigs (ZJ40, ZJ45, ZJ50D, ZJ70, ZJ70DB, ZJ50BR, DQ70BSD), boiler systems (WNS1.0-1.25-YQ, EO-150), FKQ1280-7 control systems, winches, top drives, and pumps (BOMCO F800/1000CP150, FMC). Key products include ZJ70D ZP375 turntable casing bushing liners (11 3/4″-13 3/8″), 8-1/2″ HJ437G insert carbide roller bits, FKQ1280-7 JYS21.25 pneumatic pressure regulating valves (0-35MPa), hydraulic filters (ZJ32L TFXZ-100×40), and top drive special bearings (DQ70BSD 4301000520). Every part is produced in compliance with international industry standards (API 7, ISO 9001, GB/T50131-2008) to address the critical needs of oil and gas exploration, industrial maintenance, and heavy machinery operation—where unplanned equipment downtime directly impacts productivity, safety, and operational costs.

Core Purpose & Target User Needs

Target User Segments

Our spare parts are tailored to serve three core user groups with distinct, specialized needs: 1) Oil drilling companies operating ZJ series rigs (ZJ40-ZJ70, DQ70BSD), top drives, winches, and downhole tools; 2) Industrial maintenance teams responsible for WNS1.0-1.25-YQ/EO-150 boilers, FKQ1280-7 control systems, hydraulic/pneumatic systems, and pump units (BOMCO, FMC); 3) Procurement departments and equipment distributors seeking reliable, cost-effective spare parts that match OEM specifications, with access to technical support for installation, troubleshooting, and maintenance.

Core Purpose

The primary goal of our industrial spare parts is to eliminate unplanned equipment downtime, extend machinery service life, and ensure safe, consistent operation in harsh industrial environments. We directly solve the top pain points of our users—including frequent part wear, mismatched components causing system failure, complex maintenance processes, and lack of reliable technical guidance—by delivering precision-manufactured parts that fit seamlessly with original equipment. Our parts balance durability and cost-effectiveness, helping users reduce long-term maintenance costs while maximizing operational efficiency and safety across drilling, boiler, and heavy machinery applications.

Product Overview

Key Product Categories & Models (with Equipment Compatibility)

Our product range covers all critical components required to keep your industrial equipment running efficiently, with clear compatibility to help you quickly identify the right part for your needs. Below are the core categories, key models, and their specific equipment fits:

• Drilling Rig Core Components: Turntable ZJ70D ZP375 Casing Bushing Liner (11 3/4″-13 3/8″), Insert Carbide Roller Bit 8-1/2″ HJ437G, Cardan Shaft Assembly ZJ45 W70×2000, Winch Oil Pump Transmission Shaft ZJ50D/3150 (Left-Handed) AF400109-1201, No. 3 Transmission Shaft ZJ-70 Cardan Shaft Coupling Disc Bolt GB57860-86

• Valves & Valve Components: Plate Globe Valve ZJ70DB PSZ75A, Pneumatic Pressure Regulating Valve FKQ1280-7 JYS21.25 (0-35MPa), Relief Valve 512604011002061000, Three-Position Five-Way Reversing Valve ZJ70D 4A430C-15, Hydraulic Cat Head Multi-Way Reversing Valve DL20-620L-2T-2C-2C-J, Valve Plate Body F751.14.04.02.01

• Bearings & Mechanical Components: Bearing 6232, Bearing 6232-C3 (610102-00-1120), Special Bearing for Top Drive DQ70BSD 4301000520, Cross Pin AH1301010410, Shaft 052133920, Ring Gear P3100002AA, Rope Guide Wheel Set AZ000003-0400B1

• Brake & Control Components: Brake Lever Assembly Universal PSZ-LT07, Brake Device ZJ-70 Quick Connector H6-62, Vehicle Brake Operating Mechanism ZJ-40 Disc Brake Safety Gear Disc Spring PSZ65A-2, Fork Block QBS21050A-201, Guide Belt W24-09-307

• Filters & Seals: Air Filter 4P0710, Two-Way Reversible Filter ZJ50BR-660×20, Hydraulic Filter ZJ32L TFXZ-100×40, Oil Return Filter ZJ70DB RFB-250×10Y, Filter 5400150038, Filter Element DQ70 HX-100×10 2.4.03.003, Filter Element 093-7521, Seal 4W0435, Holder-Oil Seal 5254195, Front Seal RJ11148.09.06.02, 7496-26 O-Ring Cover, Flush Pipe Packing 1050E/E03-14-0478

• Pumps & Pump Components: Dedicated Piston BOMCO F800/1000CP150, Impeller FMC15145ELA05, CH1110 Volute Liner

• Boiler Components: Boiler WNS1.0-1.25-YQ Time Relay NV, Boiler EO-150 Ignition Transformer

• Electrical & Instrument Components: Non-Destructive Flaw Detector Ultrasonic Flaw Detector Penetration Flaw Detection Test Block DPT-B, UPPER BEARING FLOW SWITCH NOV 10377495-003, Rubber Sheathed Power Cable YCW 3*6+1*4 0.5kV GB/T50131-2008, Power Switch Button LA38-11/203 16A Red

• Fasteners, Connectors & Tools: Bolt 420201043812025000, Quick Coupler H4-62, Card Cover 520901035800100006, Bonnet Puller B600-2-000, Gasket AH2202010804B1, Spring Gasket 10″ GB93-87, Pad P/N-PS-70-01-03A

• Repair Kits: Repair Kit 1878961

Function Description

Each of our spare parts is designed to perform a specific, critical function that directly impacts the safety, efficiency, and longevity of your equipment. Below is a simple, easy-to-understand breakdown of core functions for key product categories:

1. Drilling Rig Core Components

The ZJ70D ZP375 Turntable Casing Bushing Liner (11 3/4″-13 3/8″) provides a stable, wear-resistant interface for casing during drilling operations, protecting the turntable and ensuring precise casing alignment. The 8-1/2″ HJ437G Insert Carbide Roller Bit delivers efficient drilling in various rock formations, featuring durable carbide inserts that reduce wear and improve drilling speed. The ZJ45 Cardan Shaft Assembly W70×2000 transmits power smoothly between rig components, accommodating misalignment without compromising performance.

2. Valves & Control Components

The FKQ1280-7 JYS21.25 Pneumatic Pressure Regulating Valve (0-35MPa) controls air pressure in FKQ1280-7 control systems, ensuring stable operation of rig pneumatic components. The Three-Position Five-Way Reversing Valve ZJ70D 4A430C-15 regulates hydraulic fluid flow in ZJ70D rigs, enabling smooth operation of cylinders and winches. The Relief Valve 512604011002061000 protects hydraulic systems from overpressure, preventing equipment damage and safety hazards.

3. Bearings & Mechanical Components

Bearings 6232 and 6232-C3 reduce friction in rotating components (e.g., shafts, pumps), ensuring smooth operation and reducing wear. The DQ70BSD Top Drive Special Bearing 4301000520 is engineered for high-load, high-speed operation in DQ70BSD top drives, ensuring reliable performance in harsh drilling conditions. The Ring Gear P3100002AA transmits power in rig transmission systems, enabling smooth gear shifts and consistent operation.

4. Filters, Seals & Boiler Components

Hydraulic Filters (ZJ32L TFXZ-100×40, ZJ70DB RFB-250×10Y) and Air Filter 4P0710 remove contaminants from fluids and air, protecting engines, pumps, and hydraulic systems from damage. Seals (4W0435, 5254195) and Gaskets (AH2202010804B1) create airtight and watertight seals in fluid systems, preventing leakage that can lead to pressure loss and equipment failure. The Boiler EO-150 Ignition Transformer provides high-voltage power to ignite the boiler burner, ensuring reliable boiler startup and operation.

Structural Features

Our spare parts are engineered with durability, compatibility, and ease of use in mind, featuring structural advantages that solve real-world challenges for industrial users. These features are designed to maximize performance and minimize maintenance:

1. OEM-Level Precision & Compatibility

All parts are manufactured to match the exact dimensional and performance specifications of original equipment. For example, the ZJ70D ZP375 Turntable Casing Bushing Liner is precision-machined to fit ZJ70D rig turntables, and the DQ70BSD Top Drive Special Bearing 4301000520 is designed for seamless integration with DQ70BSD top drives—no modifications are needed during installation, eliminating the risk of mismatched components.

2. High-Durability Materials

Critical components are made from premium materials to withstand harsh industrial conditions: The 8-1/2″ HJ437G Insert Carbide Roller Bit features high-strength steel and carbide inserts for long-lasting drilling performance; Bearings 6232-C3 are made from high-grade steel with enhanced load-bearing capacity and corrosion resistance; Rubber Sheathed Power Cable YCW 3*6+1*4 meets GB/T50131-2008 standards, ensuring durability and insulation in harsh environments.

3. User-Friendly Design

Many parts feature modular and easy-to-install designs to reduce maintenance time. Quick Couplers (H4-62, H6-62) enable fast connection and disconnection of fluid lines, simplifying maintenance. The Bonnet Puller B600-2-000 is designed for easy removal of valve bonnets, reducing labor time. Repair Kit 1878961 comes with pre-sorted components and clear instructions, allowing maintenance teams to complete repairs efficiently.

4. Safety-Centric Construction

Components like the Pneumatic Pressure Regulating Valve FKQ1280-7 JYS21.25 and Relief Valve 512604011002061000 are designed with safety as a top priority. The pressure regulating valve ensures stable pressure in control systems, preventing component failure, while the relief valve protects hydraulic systems from overpressure. The Vehicle Brake Operating Mechanism ZJ-40 PSZ65A-2 delivers reliable braking force, enhancing safety for ZJ-40 rig operators.

Applicable Working Conditions

Our spare parts are engineered to perform reliably in the most challenging industrial environments, making them suitable for the following scenarios:

• Oil Drilling Sites: Compatible with ZJ40, ZJ45, ZJ50D, ZJ70, ZJ70DB, ZJ50BR rigs, DQ70BSD top drives, and winches, operating in high-temperature (up to 130℃), high-pressure (up to 35MPa), dusty, and humid environments—ideal for onshore and offshore drilling operations.

• Industrial Boiler Systems: Suitable for WNS1.0-1.25-YQ and EO-150 boilers, operating in high-temperature and high-pressure conditions, where ignition transformers and time relays must maintain stable performance.

• Heavy Industrial Facilities: Perfect for hydraulic/pneumatic systems, transmission components, and pump units (BOMCO, FMC) in mining, construction, and manufacturing, where equipment operates under heavy loads, constant vibration, and harsh conditions.

• Hazardous Environments: Rubber sheathed power cables (YCW 3*6+1*4) and pressure control valves (FKQ1280-7) are designed for use in hazardous oil and gas operations, meeting strict safety and insulation standards.

Maintenance & Care Recommendations

Proper maintenance of spare parts is essential to extend their service life and ensure optimal equipment performance. Below are practical, easy-to-follow tips for daily use and maintenance:

1. Regular Inspection

Inspect seals (4W0435, 5254195), valves (FKQ1280-7, 4A430C-15), and bearings (6232, 4301000520) monthly for wear, cracks, or leakage—replace immediately if damage is found to prevent system failure. Check drill bits (HJ437G) and casing bushing liners (ZP375) for wear after each drilling operation, as excessive wear can reduce performance and damage equipment.

2. Cleaning & Lubrication

Clean filter elements (HX-100×10, 093-7521) and air filters (4P0710) every 3 months to remove debris and prevent clogging. Lubricate moving parts (bearings, cardan shafts, gears) with high-temperature lubricating oil to reduce friction and wear. Avoid over-lubrication, as excess oil can attract dust and debris.

3. Storage Guidelines

Store spare parts in a dry, clean, and temperature-controlled environment (10-25℃) to avoid rust and damage. Seals and rubber components should be stored away from direct sunlight and chemicals to prevent aging. Electronic components (time relay NV, ignition transformer) should be stored in anti-static packaging to protect sensitive circuits. Drill bits and bearings should be coated with anti-rust oil during storage to prevent corrosion.

4. Replacement Schedule

Follow these recommended replacement intervals: Seals and gaskets every 6-12 months (or sooner if leakage is observed); filter elements every 6 months or 500 operating hours; drill bits (HJ437G) and casing bushing liners (ZP375) based on usage (replace when wear exceeds 5% of original thickness); bearings every 24 months or during equipment overhauls. Valves and pumps should be inspected annually and replaced if signs of wear are present.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are three real-world repair cases from our clients, demonstrating how our spare parts solve common equipment issues, minimize downtime, and restore optimal performance. These cases reflect actual scenarios in oil drilling and industrial operations:

Case 1: ZJ70D Rig Turntable Wear

Problem: A drilling company reported excessive vibration and casing misalignment in their ZJ70D rig’s turntable, affecting drilling accuracy. Root Cause: Worn turntable casing bushing liner (original part) with uneven wear. Solution: Replaced with our ZJ70D ZP375 Casing Bushing Liner (11 3/4″-13 3/8″) and re-aligned the turntable. Result: Vibration eliminated, casing alignment restored, and drilling accuracy improved—downtime reduced to 2 hours, with no further issues after 9 months of use.

Case 2: DQ70BSD Top Drive Bearing Failure

Problem: A DQ70BSD top drive was experiencing excessive noise and overheating, indicating bearing failure. Root Cause: Worn special bearing (original part) in the top drive system, unable to withstand high loads. Solution: Installed our Special Bearing for Top Drive DQ70BSD 4301000520 and lubricated the top drive system. Result: Noise and overheating eliminated, top drive performance restored, and downtime reduced to 3 hours—top drive has operated reliably for 8 months.

Case 3: EO-150 Boiler Ignition Failure

Problem: An EO-150 boiler failed to start, with no ignition in the burner. Root Cause: Faulty ignition transformer (original part) that failed to produce high-voltage power. Solution: Replaced with our Boiler EO-150 Ignition Transformer and tested the boiler system. Result: Boiler ignition restored, startup successful, and downtime reduced to 1.5 hours—boiler has operated consistently since replacement.

FAQ (Frequently Asked Questions)

Procurement Guide & Technical Problem-Solving Reference

Procurement Reference Standards

To ensure you select the right spare parts for your equipment, follow these simple procurement guidelines:

• Match your equipment model (e.g., ZJ70D, DQ70BSD) with the corresponding part number (e.g., ZP375, 4301000520) for precise compatibility.

• Verify the part’s material and performance specifications (e.g., top drive bearings must meet high-load standards; power cables must comply with GB/T50131-2008) to ensure it fits your working conditions.

• Check for industry certifications (API 7, ISO 9001) to ensure the part meets safety and performance standards for your application, especially in hazardous drilling and boiler environments.

Technical Problem-Solving Reference

Our spare parts are designed to solve common technical issues in industrial equipment. Below are key references to help you troubleshoot quickly:

• Rig turntable vibration/casing misalignment: Check the ZP375 casing bushing liner for wear—replace with our precision liner to restore alignment and reduce vibration.

• Top drive noise/overheating: Inspect the DQ70BSD special bearing 4301000520 for wear—replace with our high-quality bearing to eliminate issues and restore performance.

• Boiler ignition failure: Check the EO-150 ignition transformer for malfunction—replace with our transformer to restore boiler startup and operation.

Call to Action for Procurement

Whether you need a single component (e.g., ZJ70D ZP375 Turntable Casing Bushing Liner, 8-1/2″ HJ437G Drill Bit) or a full set of spare parts for your ZJ series rig, WNS1.0-1.25-YQ/EO-150 boiler, or DQ70BSD top drive, we are here to meet your needs. Our parts offer superior durability, OEM-level compatibility, and competitive pricing—backed by professional technical support and strict quality assurance. Contact us today to discuss your specific requirements, get a detailed quote, and secure the spare parts you need to keep your equipment running safely and efficiently. We prioritize your operational success and are committed to providing the most reliable solutions for your industrial needs.

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.