ZJ50 BK-3-7B4, ZJ30C, ZJ70DB & More High-Quality Components

Introduction

We specialize in the production and supply of high-precision, durable industrial equipment parts, covering a comprehensive range of components tailored for oil drilling rigs, boilers, mud pumps, winches, engines, and industrial hydraulic/pneumatic/electrical systems. Our product portfolio includes key parts such as the bushing ZJ50 BK-3-7B4, ZJ-30C mud pump group ball valve Q11F-16C-15S/4600300001, ZJ70DB disc brake operation box working brake assembly TK01-01-00A, Boiler WNS2-1.25-5Y relay MY2J 220/240VAC, and air filter EF5-65—all engineered to meet the rigorous operational demands of heavy-duty industrial environments. Adhering to international standards (ISO 9001:2015, API 6A for oil drilling components, ASME B16.34 for valves, ASME B31.1 for high-pressure hoses, and Ex d IIB T6 for explosion-proof parts), our parts prioritize seamless compatibility, long service life, and stable performance to address the core pain points of industrial operations. This document serves as a reliable reference for procurement decisions and technical support, featuring detailed product information, practical maintenance tips, real-world fault solutions, and clear procurement guidance—all designed to help users minimize equipment downtime, cut maintenance costs, and ensure safe, efficient operation of their industrial equipment.

Core Purpose & Target User Needs

Our industrial parts are precisely adapted to key equipment models, including ZJ-30, ZJ30C, ZJ50, ZJ50D28, ZJ50L, ZJ70D, ZJ70DB drilling rigs, Boiler WNS1.0-1.25-Y, WNS2-1.25-5Y, DZG0.9, mud pump groups (ZJ-30C), winches (ZJ50D28, ZJ-70), engines (equipped with repair kits 6V9222, 6V5433), and inclinometers (GE-MWD, QDT). Target users include procurement managers, on-site maintenance technicians, engineering teams, and equipment operators in industries such as oil and gas drilling, thermal power generation, mining, and industrial manufacturing. These users consistently face frustrating challenges: unplanned equipment shutdowns due to incompatible or low-quality replacement parts, high maintenance costs from short-lived components, difficulty sourcing parts with precise specifications (e.g., ZJ50 BK-3-7B4 bushing, ZJ30C Q11F-16C-15S ball valve, ZJ70DB TK01-01-00A brake assembly), and delays in fault resolution that disrupt productivity and increase operational costs. Our core purpose is to provide OEM-standard, cost-effective parts that ensure 100% compatibility with existing equipment, reduce unplanned downtime by 46% on average, cut maintenance costs by 38%, and deliver reliable performance in harsh conditions—ultimately helping users maintain smooth operations and maximize their operational efficiency.

Product Introduction

Key Product Range & Specifications

Our product line covers bushings, filters, valves, brake components, repair kits, electrical parts, engines parts, and more, all manufactured with strict quality control to meet industrial-grade and specialized industry standards. Key products include:

• Bushing ZJ50 BK-3-7B4 & Cover Plate Liner F6018R55 D3017R55: The ZJ50 BK-3-7B4 bushing is designed for ZJ50 drilling rigs, with an inner diameter of 60mm, outer diameter of 75mm, and length of 90mm, ensuring smooth movement of rotating components; the F6018R55 D3017R55 cover plate liner is a wear-resistant liner with a thickness of 5mm, protecting cover plates from abrasion in harsh industrial environments.

• Drilling Rig Parts: ZJ-30C mud pump group ball valve Q11F-16C-15S/4600300001 (working pressure 1.6MPa, DN15), ZJ50D28 winch brake operating mechanism & S50JCK-XI-20RIG-8457 electronic brake lever, ZJ70DB disc brake operation box working brake assembly TK01-01-00A, ZJ70D wire trough oil connector 0156·27·52·00, ZJ50L explosion-proof solenoid valve 34GDYOH20B-T, and ZJ30 telescopic cylinder repair kit—all tailored for ZJ series drilling rigs, ensuring reliable fluid control, braking, and hydraulic system operation.

• Boiler & Engine Parts: Boiler WNS2-1.25-5Y relay MY2J 220/240VAC (coil voltage 220/240VAC, contact current 10A), Boiler WNS1.0-1.25-Y clip-on check valve H71Y-25 DN25 (working pressure 2.5MPa), Boiler DZG0.9 Y series motor Y90-2 380V 2.2KW, engine repair kits 6V9222 & 6V5433, starter 1113274/3KW 10-tooth, and oil pump 161-4113—ensuring stable operation of boilers and engines.

• Filters & Seals: Air filters EF5-65, 512605520020600000, 3827643, filter elements 1R0750, 1R0756, 5I8670, 477556, ZJ70D WU160×180, ZJ30 ZUI-A400X40FZ, VFabric sealing ring 3GB.00.044C, and gasket set AH100101-021600—all engineered to remove impurities, prevent leaks, and protect equipment from wear.

Function Description

Core Functions of Key Products

Each product is designed to solve specific industrial challenges, with targeted functions that ensure optimal equipment performance, safety, and efficiency—simple, reliable, and built to get the job done without unnecessary complexity:

• Bushing ZJ50 BK-3-7B4: Reduces friction between rotating components in ZJ50 drilling rigs, ensuring smooth movement, reducing energy consumption, and protecting expensive parts from wear and damage during high-load operations.

• ZJ-30C Mud Pump Group Ball Valve Q11F-16C-15S/4600300001: Controls the on/off of mud flow in ZJ-30C mud pump groups, with a tight seal to prevent mud leakage, ensuring stable mud circulation during drilling operations.

• ZJ70DB Disc Brake Operation Box Working Brake Assembly TK01-01-00A: Controls the working brake of ZJ70DB drilling rigs, allowing operators to apply precise braking force (up to 1400N·m) to stop winches or other components quickly, ensuring operator safety and equipment protection.

• Boiler WNS2-1.25-5Y Relay MY2J 220/240VAC: Controls the electrical circuit of WNS2-1.25-5Y boilers, switching power on/off to regulate boiler operation, protecting the boiler from electrical faults and ensuring stable performance.

• Air Filters EF5-65, 3827643 & Filter Elements 1R0750, 1R0756: Air filters remove dust and impurities from intake air (filtration efficiency ≥ 99.7%), protecting engines and pneumatic systems; filter elements clean lubricating oil or hydraulic oil, preventing component wear and extending equipment service life.

• Engine Repair Kit 6V9222 & Starter 1113274: The 6V9222 engine repair kit includes all necessary components to fix common engine faults, reducing maintenance time; the 1113274 starter (3KW, 10-tooth) provides reliable starting power for industrial engines, ensuring quick and stable engine startup.

Structural Features

Design Advantages for Durability & Compatibility

Our products are designed with practicality and durability in mind, using high-quality materials and thoughtful structural designs to ensure they fit seamlessly with your equipment and stand up to harsh industrial conditions:

• Bushing ZJ50 BK-3-7B4: Made of high-quality phosphor bronze (CuSn10P1) with a hardness of 85-95 HB, ensuring good wear resistance and self-lubricating performance; the precision-machined inner and outer surfaces (tolerance ≤ 0.003mm) ensure a tight fit with ZJ50 drilling rig components.

• ZJ-30C Ball Valve Q11F-16C-15S/4600300001: Constructed of carbon steel (WCB) with a PTFE seal, ensuring leak-proof performance (leakage ≤ 0.001L/min) under 1.6MPa pressure; the compact design saves installation space, and the easy-to-operate handle allows for quick on/off control.

• ZJ70DB Brake Assembly TK01-01-00A: Made of high-strength steel with anti-corrosion coating, capable of withstanding harsh drilling environments; the integrated design ensures easy installation and maintenance, with a response time of ≤ 0.3 seconds for quick braking.

• MY2J 220/240VAC Relay: Features a flame-retardant plastic housing (UL94 V-0 rating) for electrical safety; the silver alloy contacts ensure stable electrical connection, with a service life of ≥ 100,000 operations under normal working conditions.

• Air Filter EF5-65 & Filter Element 1R0750: The EF5-65 air filter has a large filter area (0.8m²) to reduce pressure loss (≤ 0.025MPa); the 1R0750 filter element uses glass fiber material, with a filtration precision of 10μm, ensuring effective impurity removal and long service life.

Applicable Working Conditions

All our products undergo rigorous testing to ensure they perform reliably in the harsh, complex conditions of industrial sites—no matter the environment, you can count on them to work when you need them:

• Temperature Range: -50°C to 300°C (for brake assemblies, bushings, and engine parts), suitable for cold northern drilling sites, high-temperature boiler rooms, and desert oil fields.

• Pressure Range: 0-35MPa (for high-pressure hoses, ball valves, and hydraulic components), meeting the high-pressure requirements of oil drilling rigs, mud pumps, and hydraulic systems.

• Environmental Resistance: IP55-IP67 protection rating (for relays, air filters, and solenoid valves), dustproof, waterproof, and anti-vibration (≤ 17g), suitable for outdoor oil drilling rigs, mining sites, and industrial workshops.

• Corrosion Resistance: 304/316L stainless steel, phosphor bronze (for BK-3-7B4 bushing), Viton (for seals), and anti-corrosion coatings are used to resist acid, alkali, oil, and saltwater corrosion, making our parts suitable for offshore oil platforms, chemical processing facilities, and coastal industrial sites.

• Load Capacity: ZJ70DB brake assembly TK01-01-00A can provide braking force up to 1400N·m, connecting rod bolts 7E4195 can bear tensile force up to 85000N, and high-pressure hose assembly JB1885 can withstand 35MPa pressure—meeting the high-load requirements of industrial equipment.

Maintenance & Care Recommendations

Taking good care of your parts is the best way to extend their service life and keep your equipment running smoothly. Below are simple, practical maintenance tips for key products, designed to be easy for on-site technicians to follow:

• Bushing ZJ50 BK-3-7B4: Add lubricating oil (ISO VG 32) to the bushing every 2 months to enhance self-lubrication; check for abnormal noise or wear during operation—if detected, replace the bushing immediately to prevent component damage.

• ZJ-30C Ball Valve Q11F-16C-15S/4600300001: Operate the valve regularly (once a week) to prevent jamming; inspect the valve for leaks every month; clean the valve core and seal every 6 months to ensure tight sealing and smooth operation.

• ZJ70DB Brake Assembly TK01-01-00A: Inspect the brake assembly for wear or damage every 3 months; adjust the brake clearance if needed; clean the brake surface to remove dust and debris, ensuring effective braking and reducing noise.

• MY2J 220/240VAC Relay: Check the relay wiring connections for looseness or corrosion every 3 months; replace the relay if it fails to switch circuits or makes abnormal noise during operation.

• Air Filters EF5-65, 3827643 & Filter Elements 1R0750, 1R0756: Replace the air filter elements every 3 months; replace the 1R0750, 1R0756 filter elements every 1800 working hours; clean the filter housings regularly to remove accumulated dust and impurities.

Note: All maintenance work should be done by trained technicians following the equipment’s operation manual. Always use genuine replacement parts—non-genuine parts can cause equipment damage, safety hazards, and costly downtime.

We supply the following spare parts:

Bushing ZJ50 BK-3-7B4

Cover Plate Liner F6018R55 D3017R55

Friction disc W30-07-902.09.13.19

repair kit 2W7566repair kit 9N2041

air filter EF5-65

Mud pump group ZJ-30C ball valve Q11F-16C-15S/4600300001

winch brake operating mechanismZJ50D28electronic brake lever S50JCK-XI-20RIG-8457

Adjustment mats DQ70BSD 9703380001

Turntable cat head shaft ZJ-50 hydraulic cat head assembly YM-10II

Ram screw F75L14.24.04.03

Faucet flushing pipe and packing assembly\ZJ30 SL225

Gasket set AH100101-021600

impellerB1052R55

steering pump V2051P7P38A7GLfilter element 1R0750

Drive ring 515865

Rubber sheathed power cable YCW 2*25mm2 05kV

weight table SK-YJZM410

engine repair kit 6V9222starter 1113274/3KW10tooth

filter element 1R0756Connecting rod bolts/Connecting rod nut 7E4195

Inclinometer QDT connector six-core 981681

double sprocket P3500053AA

Wire trough oil connector\ZJ70D 0156·27·52·00

Boiler WNS2-1.25-5Y Relay MY2J 220/240VAC

Explosion-proof solenoid valve\ZJ50L 34GDYOH20B-T

VFabric sealing ring 3GB.00.044C

Brake device ZJ-70DB disc brake operation box working brake assembly TK01-01-00A

Boiler DZG0.9 Y series small and medium-sized motor Y90-2 380V 2.2KW

High pressure hose assembly JB1885

filter element ZJ70D WU160×180

Inlet filter\ZJ30 ZUI-A400X40FZ

cone ring 520901180706070000

Crosshead Pin P/N-CS33001-0409

SLEEVE, SHAFT; Part Number: JC28/11D-06-01

Friction disc W11-07-914

air filter 512605520020600000

fastening plate AH0801010409

Drive ring 515866

filter element 5I8670bolt 179887

High pressure connector and pneumatic oil pump QYB50-60L

BushingPSZ75A-2-06.01

Inclinometer GE-MWD pulse test line 983150

telescopic cylinder repair kit\ZJ30

Boiler WNS1.0-1.25-Y clip-on check valve H71Y-25 DN25

filter element 477556air filter 3827643

engine repair kit 6V5433Oil pump 161-4113

idler axle 7T2778

Roller shaft ZJ70DB rubber washer 14253 D3 4 67

Brake device ZJ-70 Return oil filter RFA-63*10

winch clutch 424WCB2 136WCB2 236WCB2 336WCB2 436WCB2

Internal Thread Ball Valve G1 P/N-Q11F-16

On-Site Fault Maintenance Cases

Below are 3 real on-site fault cases, with simple, effective solutions to help you fix common issues quickly—minimizing downtime and saving maintenance costs:

Case 1: ZJ50 BK-3-7B4 Bushing Wear Causing Drilling Rig Vibration

Fault Phenomenon: A ZJ50 drilling rig produced excessive vibration during operation, and rotating components made abnormal noise.Inspection: The BK-3-7B4 bushing was severely worn (wear thickness ≥ 0.07mm), causing loose fit with rotating parts. Solution: Replace the worn bushing with a new ZJ50 BK-3-7B4, add lubricating oil, and adjust the component clearance. Result: The rig vibration disappeared, abnormal noise stopped, and the rig operated stably for 10 months.

Case 2: ZJ-30C Q11F-16C-15S Ball Valve Leakage

Fault Phenomenon: A ZJ-30C mud pump group’s Q11F-16C-15S ball valve leaked mud, disrupting mud circulation and affecting drilling efficiency. Inspection: The valve’s PTFE seal was worn, causing leakage. Solution: Replace the worn seal with a new one, tighten the valve connections, and test for leaks. Result: The valve stopped leaking, mud circulation was restored, and the mud pump operated normally.

Case 3: 1R0750 Filter Element Clogging

Fault Phenomenon: An industrial hydraulic system’s oil pressure dropped, and equipment operation became sluggish. Inspection: The 1R0750 filter element was clogged with impurities, restricting oil flow. Solution: Replace the filter element with a new 1R0750, clean the filter housing, and check the hydraulic oil for contamination. Result: Oil pressure returned to normal, equipment operated smoothly, and hydraulic components were protected from wear.

FAQ (Frequently Asked Questions)

Procurement Guide & Technical Support

We are committed to providing high-quality industrial parts that meet or exceed OEM standards, with strict quality control at every stage of production. Each part undergoes three rounds of rigorous testing—raw material inspection, production process inspection, and final performance testing—to ensure a qualification rate of ≥ 99.9%. Our products are cost-effective, with prices 17-33% lower than original OEM parts, while maintaining the same level of durability, compatibility, and performance. We also provide detailed technical specifications, quality certification documents, and material test reports for all products, so you can make informed procurement decisions with confidence.

If you need to purchase any of the products mentioned (including ZJ50 BK-3-7B4 bushing, ZJ30C Q11F-16C-15S ball valve, ZJ70DB TK01-01-00A brake assembly, MY2J 220/240VAC relay, 1R0750 filter element, and other components), please provide the part number, equipment model, and required quantity. We will promptly provide you with a detailed quotation, product technical parameters, and relevant quality certifications. In addition to product supply, we offer professional technical support, including on-site fault diagnosis, maintenance guidance, and replacement part supply, to help you resolve any technical issues quickly and keep your equipment running smoothly.

Choose our industrial parts to minimize equipment downtime, reduce maintenance costs, and ensure the safe, efficient operation of your industrial equipment. We are dedicated to providing reliable products and comprehensive solutions to support your business development, and we look forward to serving your procurement and technical needs with high-quality products and professional services.

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.