Parts for ZJ30/ZJ40DB/ZJ50/ZJ70/ZJ70D Drills, WNS2-1.25-Y Boiler

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, workover, boiler systems, and heavy machinery sectors. Our comprehensive product portfolio covers core components for ZJ series drilling rigs (ZJ30, ZJ40DB, ZJ50, ZJ70, ZJ70D, ZJ70/4500DZ), oilfield workover rigs, crane drilling rigs, mud pumps, winches (pneumatic and hydraulic), and boiler systems (WNS2-1.25-Y). Key products include one-way throttle valve 4900300002, ZJ50 closed cylinder bolts (114.50.125.03 BG-44), ZJ70D PSZ 75-00 disc brake hydraulic station, H2525-70-37 impeller, and DQ70BS o-type sealing ring (M0110205.7WGJHZ 102×5.7). Every part is produced in compliance with international industry standards (API 7, ISO 9001) to address the critical needs of oil and gas exploration, workover operations, industrial maintenance, and boiler 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 and workover companies operating ZJ series rigs (ZJ30-ZJ70, ZJ70/4500DZ), oilfield workover rigs, crane drilling rigs, mud pumps, and pneumatic/hydraulic winches; 2) Industrial maintenance teams responsible for WNS2-1.25-Y boilers, drill rig hydraulic/pneumatic systems, engine components (CATC18, CATC27), and transmission systems; 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, workover, and boiler 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:

• Valves & Throttle Components: One-way Throttle Valve 4900300002, Throttle Valve 512604100000061800, Two Position Three Way Knob Valve 4900300024, High Pressure Control Valve High Pressure Gate Valve Z23Y-35 76.2mm, Valve Body Assembly 5″

• Drilling Rig Core Components: Closed Cylinder Bolts ZJ50 114.50.125.03 BG-44, Crane ZJ70/4500DZ Drilling Rig Lock Plate 106.33.72.03, Pneumatic Winch Gas Distribution Assembly ZJ30 XJFH-5/35 KTS, Pneumatic Winch Return Spring ZJ QJ-5T, Positive Carriage DQ-130II Inner Ring Gear 106.02.40.11

• Brake & Control Components: Winch Brake Operating Mechanism TR8-L6-D Handwheel Pressure Regulating Valve, Disc Brake Hydraulic Station ZJ70D PSZ 75-00, Brake Block PSZ75A-2-01 Hydraulic Control Disc Brake, Hydraulic Control Valve ZJ40 PSZ75B DH-0432/2/A73

• Pumps & Pump Components: H2525-70-37 Impeller, CAPSCREW T500-1008 Mud Pump, SJ600S Piston Pump Packing 4.5inch 600 Type, Oilfield Workover Rig Gear Pump V10-1P7P-038C-20L, BL5110 Volute Liner

• Bearings & Mechanical Components: Bearing 430110010303600046, Bearing 30317, Whole Vehicle Thrust Bearing/Whole Car Copper Pad Copper Sleeve 6883492, Axis P2400597AA, Ring Gear P3100003AA, Cardan Shaft Universal L=870

• Filters & Seals: GASKET P/N-CS33001-0413, O-Ring 530301190110019000, O-Type Sealing Ring DQ70BS M0110205.7WGJHZ 102×5.7, SEAL UPPER SHEAR Part Number: RS1114809100105, FILTER OIL Part Number: B7577

• Engine & Power Components: Radiator JH-C27-875HP CATC27, Starter C18 502283D1(7N6056) CATC18, Cylinder Liner 1W6280/2W6000, Piston 512858, Accumulator F28-35 40L

• Electrical & Electronic Components: Ordinary Diode KP 400, ELECTRONIC MODULE DS3820SMWH, SK-2Z16 Data Signal Transmission Line SK-CAN-5 Core, SK-2Z16 AC Control Module Assembly 0812-06 1400, Weight Gauge SZJ Connecting Pipeline SZJ-DN.1.4f 15m, Oil Sensor Plug 9X1124/3406

• Boiler Components: Boiler WNS2-1.25-Y AC Contactor SC-03 SC11AA US

• Fasteners, Tools & Accessories: Pin ZJ40DB BK-4-6C1, Working Pliers BKD-00-6D, Bolt 420201070712025000, Air Bag W31-20-901, Air Bag W30-20-900, Fan Belt 1904155, Oil Standard YWZ-125TA, Air Horn Switch (Foot Pedal) CA-10, SHIELD, END Part Number: 36001-0304

• Repair Kits: Front Structure Repair Kit 9X6573\234-1874

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. Valves & Throttle Components

The One-Way Throttle Valve 4900300002 controls the flow rate of hydraulic or pneumatic fluid in one direction, regulating speed and pressure in rig systems to ensure smooth operation. The Two Position Three Way Knob Valve 4900300024 switches fluid flow between two paths, enabling quick control of pneumatic/winch components. The High Pressure Gate Valve Z23Y-35 76.2mm provides reliable shut-off for high-pressure fluid lines in drilling and workover operations, preventing leakage and ensuring system safety.

2. Drilling Rig & Winch Components

The ZJ50 Closed Cylinder Bolts (114.50.125.03 BG-44) secure cylinder components in ZJ50 rigs, with high tensile strength to withstand high pressure and vibration. The ZJ30 Pneumatic Winch Gas Distribution Assembly XJFH-5/35 KTS distributes air pressure to winch components, enabling smooth lifting and lowering operations. The Universal Cardan Shaft L=870 transmits power between misaligned rig components, accommodating movement without compromising performance.

3. Brake & Hydraulic Components

The ZJ70D PSZ 75-00 Disc Brake Hydraulic Station provides hydraulic pressure to ZJ70D rig disc brakes, ensuring reliable stopping power and operator safety. The Brake Block PSZ75A-2-01 delivers friction for hydraulic control disc brakes, reducing wear and ensuring consistent braking performance. The ZJ40 PSZ75B Hydraulic Control Valve DH-0432/2/A73 regulates hydraulic flow in ZJ40 rig systems, controlling brake and cylinder operation.

4. Pumps, Filters & Seals

The H2525-70-37 Impeller and BL5110 Volute Liner work together in pump systems to move fluid efficiently, with wear-resistant materials to extend service life. The SJ600S Piston Pump Packing 4.5inch 600 Type creates a tight seal in piston pumps, preventing fluid leakage and maintaining pump efficiency. Filters (B7577) and seals (O-type, RS1114809100105) remove contaminants and prevent leakage, protecting pumps, valves, and hydraulic systems from damage.

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 ZJ50 Closed Cylinder Bolts 114.50.125.03 BG-44 are precision-threaded to fit ZJ50 rig cylinders, and the ZJ70D PSZ 75-00 Disc Brake Hydraulic Station is designed for seamless integration with ZJ70D rig brake systems—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 H2525-70-37 Impeller and BL5110 Volute Liner are constructed from wear-resistant alloys for long-lasting pump performance; Bearings (430110010303600046, 30317) are made from high-grade steel with enhanced load-bearing capacity and corrosion resistance; O-type Sealing Rings DQ70BS M0110205.7WGJHZ 102×5.7 are made from high-quality rubber to resist high pressure and temperature.

3. User-Friendly Design

Many parts feature modular and easy-to-install designs to reduce maintenance time. The Winch Brake Operating Mechanism TR8-L6-D features a handwheel pressure regulating valve for easy adjustment, simplifying operation and maintenance. Repair Kit 9X6573\234-1874 comes with pre-sorted components and clear instructions, allowing maintenance teams to complete front structure repairs efficiently. Working Pliers BKD-00-6D are ergonomically designed for easy handling, reducing labor fatigue during maintenance.

4. Safety-Centric Construction

Components like the High Pressure Gate Valve Z23Y-35 76.2mm and Disc Brake Hydraulic Station ZJ70D PSZ 75-00 are designed with safety as a top priority. The gate valve ensures secure shut-off of high-pressure lines, preventing accidents, while the hydraulic station delivers stable pressure to brakes, ensuring reliable stopping power. Air Bags (W31-20-901, W30-20-900) absorb vibration in rig components, protecting equipment and 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 & Workover Sites: Compatible with ZJ30, ZJ40DB, ZJ50, ZJ70, ZJ70D, ZJ70/4500DZ rigs, oilfield workover rigs, pneumatic winches, and mud pumps, operating in high-temperature (up to 130℃), high-pressure (up to 35MPa), dusty, and humid environments—ideal for onshore and offshore drilling and workover operations.

• Industrial Boiler Systems: Suitable for WNS2-1.25-Y boilers, operating in high-temperature and high-pressure conditions, where AC contactors (SC-03 SC11AA US) must maintain stable electrical control.

• Heavy Industrial Facilities: Perfect for hydraulic/pneumatic systems, engine components (CATC18, CATC27), transmission systems, and crane drilling rigs in mining, construction, and oilfield operations, where equipment operates under heavy loads, constant vibration, and harsh conditions.

• Hazardous Environments: High-pressure valves (Z23Y-35) and seals (RS1114809100105) are designed for use in hazardous oil and gas operations, meeting strict safety and pressure resistance 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 (O-type, RS1114809100105), valves (4900300002, Z23Y-35), and bearings (430110010303600046, 30317) monthly for wear, cracks, or leakage—replace immediately if damage is found to prevent system failure. Check brake blocks (PSZ75A-2-01) and piston pump packing (SJ600S) for wear after each operation, as excessive wear can reduce performance and cause leakage.

2. Cleaning & Lubrication

Clean oil filters (B7577) and radiator (JH-C27-875HP CATC27) every 3 months to remove debris and prevent clogging. Lubricate moving parts (bearings, cardan shafts, winch components) 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 (O-rings, air bags) should be stored away from direct sunlight and chemicals to prevent aging. Electronic components (DS3820SMWH, SK-2Z16 AC control module) should be stored in anti-static packaging to protect sensitive circuits. Bolts and fasteners 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; brake blocks (PSZ75A-2-01) and piston pump packing (SJ600S) every 12-18 months (depending on usage); 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 Brake System Failure

Problem: A drilling company reported their ZJ70D rig’s disc brake system was failing to maintain pressure, leading to reduced stopping power.Root Cause: Faulty disc brake hydraulic station (original part) with internal leakage. Solution: Replaced with our ZJ70D PSZ 75-00 Disc Brake Hydraulic Station and flushed the brake system. Result: Brake pressure restored, stopping power regained, and downtime reduced to 2.5 hours—rig has operated safely for 8 months.

Case 2: ZJ30 Pneumatic Winch Malfunction

Problem: A ZJ30 rig’s pneumatic winch was failing to lift loads, with inconsistent air pressure distribution. Root Cause: Worn pneumatic winch gas distribution assembly (original part) and broken return spring. Solution: Installed our ZJ30 XJFH-5/35 KTS Gas Distribution Assembly and ZJ QJ-5T Return Spring, then tested the winch. Result: Air pressure distributed evenly, winch lifting performance restored, and downtime reduced to 2 hours—winch has operated reliably since replacement.

Case 3: WNS2-1.25-Y Boiler Electrical Failure

Problem: A WNS2-1.25-Y boiler failed to start, with no power supply to the burner system. Root Cause: Faulty AC contactor (original part) that failed to transmit electrical power. Solution: Replaced with our WNS2-1.25-Y AC Contactor SC-03 SC11AA US and tested the boiler electrical system. Result: Power supply restored, boiler startup successful, and downtime reduced to 1 hour—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, ZJ30) with the corresponding part number (e.g., PSZ 75-00, XJFH-5/35 KTS) for precise compatibility.

• Verify the part’s material and performance specifications (e.g., hydraulic station components must meet high-pressure standards; AC contactors must match boiler electrical requirements) 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 brake pressure loss: Check the ZJ70D PSZ 75-00 disc brake hydraulic station for leakage—replace with our hydraulic station to restore pressure and braking performance.

• Pneumatic winch lifting failure: Inspect the ZJ30 XJFH-5/35 KTS gas distribution assembly and QJ-5T return spring—replace both parts to restore air pressure distribution and winch operation.

• Boiler electrical failure: Check the WNS2-1.25-Y AC contactor SC-03 SC11AA US for malfunction—replace with our contactor to restore power supply and boiler startup.

Call to Action for Procurement

Whether you need a single component (e.g., One-Way Throttle Valve 4900300002, ZJ70D PSZ 75-00 Disc Brake Hydraulic Station) or a full set of spare parts for your ZJ series rig, oilfield workover rig, or WNS2-1.25-Y boiler, 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.