1388506, ZJ70D, ZJ30C & 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, thickeners, mud logging systems, and industrial hydraulic/pneumatic/electrical systems. Our product portfolio includes key parts such as the piston pin 1388506, ZJ70D manual pressure regulator PRM2PP17S40, ZJ70DB brake pads BK-1-7A, Boiler WNS1.0-1.25-YQ flue temperature controller E5EZ, and parallel transfer case assembly Z01030000002AA—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 pipelines, and IP55 for electrical 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, ZJ30DBS, ZJ50LDB, ZJ70, ZJ70D, ZJ70DB, ZJ70DBS drilling rigs, Boiler WNS1.0-1.25-YQ, WNS2-1.25-5Y, JC70B drawworks, portable thickeners, mud logging instrument CPS-KQ-VI, hydrogen generator CYH-500, and various industrial engines/pumps. 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, mud logging, 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., piston pin 1388506, ZJ70D PRM2PP17S40 pressure regulator, ZJ70DB BK-1-7A brake pads), 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 47% on average, cut maintenance costs by 39%, 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 engine components, hydraulic parts, valves, filters, brakes, seals, electrical parts, drilling tools, and more, all manufactured with strict quality control to meet industrial-grade and specialized industry standards. Key products include:

• Piston Pin 1388506 & Connecting Rod 107-7330: The piston pin 1388506 is a precision-engineered component with an outer diameter of 35mm, inner diameter of 20mm, and length of 80mm, ensuring smooth movement between the piston and connecting rod; the connecting rod 107-7330 has a center distance of 250mm, made of high-strength steel to withstand high load and pressure.

• Drilling Rig Parts: ZJ70D manual pressure regulator PRM2PP17S40 (adjustment range 0-35MPa), ZJ70DB check valve KG-61, ZJ70DB brake pads BK-1-7A, ZJ30C hydraulic tank oil suction filter TF-160XL-C, ZJ50LDB line filter ZUI-E25×10BD-P, ZJ30 hydraulic control valve, and brake head KQ-21 (for ZJ70DBS/ZJ30DBS)—all tailored for ZJ series drilling rigs, ensuring reliable pressure control, braking, filtration, and hydraulic system operation.

• Boiler & Pump Parts: Boiler WNS1.0-1.25-YQ flue temperature controller E5EZ (measurement range 0-600°C, accuracy ±1°C), Boiler WNS2-1.25-5Y liquid level switch 61F-G FLOATLESS, oil pump DW40C0707YL8H2207 (displacement 15L/min), water pump assembly 20431484, and impellers DH2147, GAHF8056QU1 AHF—ensuring stable operation of boilers and pump systems.

• Other Key Components: Air filters 3827643, 3827589, diesel filter 1R0749, suction filter 5400200008, oil return filter DQ70 RFA-100×100LY-T 2.4.02.001, O-rings 5303920470, 530301011030053001, 6V9028, 8″ turbine flowmeter 9A-100012094, inserted carbide roller bit 6″ HJ617G, and supercharger repair kit 6V9727—all engineered to meet specific equipment operational requirements with strict dimensional and performance compliance.

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:

• Piston Pin 1388506 & Connecting Rod 107-7330: The piston pin connects the piston to the connecting rod, transmitting reciprocating motion into rotational motion to drive industrial engines; the connecting rod transfers power from the piston to the crankshaft, ensuring stable power output under high-load conditions.

• ZJ70D Manual Pressure Regulator PRM2PP17S40: Adjusts and stabilizes hydraulic pressure in ZJ70D drilling rig systems, allowing operators to control pressure within 0-35MPa precisely, preventing overpressure damage to hydraulic components and ensuring smooth rig operation.

• ZJ70DB Brake Pads BK-1-7A & Brake Head KQ-21: The BK-1-7A brake pads provide strong friction to stop ZJ70DB drilling rig components quickly, with a braking force of up to 1350N·m; the KQ-21 brake head controls the brake pads, ensuring reliable braking and operator safety during drilling operations.

• Boiler WNS1.0-1.25-YQ Flue Temperature Controller E5EZ: Monitors the flue gas temperature of WNS1.0-1.25-YQ boilers in real time, adjusting the combustion system to maintain optimal temperature (180-220°C), improving energy efficiency and reducing emissions.

• Air Filters 3827643, 3827589 & Diesel Filter 1R0749: The air filters remove dust and impurities from intake air (filtration efficiency ≥ 99.7%), protecting engines from wear; the 1R0749 diesel filter filters contaminants from diesel fuel, preventing fuel injector clogging and ensuring complete combustion.

• 6″ Inserted Carbide Roller Bit HJ617G: Drills through rock and soil layers during oil and gas drilling operations, with a hardness of HRC 65-70, ensuring fast drilling speed (15-20m/h) and long service life in harsh geological conditions.

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:

• Piston Pin 1388506: Made of high-carbon chromium steel (GCr15) with heat treatment, ensuring high hardness (≥ 62 HRC) and wear resistance; the precision-machined surface (tolerance ≤ 0.002mm) ensures smooth movement and tight fit with the piston and connecting rod.

• ZJ70D Pressure Regulator PRM2PP17S40: Constructed of stainless steel (304) with a precision spool, ensuring leak-proof performance (leakage ≤ 0.001L/min) under 35MPa pressure; the manual adjustment knob is ergonomically designed, allowing for easy and precise pressure control.

• ZJ70DB Brake Pads BK-1-7A: Made of high-temperature resistant friction material (operating temperature up to 320°C), with a friction coefficient of 0.49-0.59, ensuring strong braking force and long service life (≥ 8800 working hours); the steel backplate provides structural stability and shock resistance.

• E5EZ Flue Temperature Controller: Features a waterproof and dustproof housing (IP65 rating), suitable for boiler room environments; the digital display is clear and easy to read, with a response time of ≤ 0.5 seconds, ensuring real-time temperature monitoring.

• Air Filter 3827643 & Diesel Filter 1R0749: The 3827643 air filter has a multi-layer filtration structure, reducing pressure loss (≤ 0.02MPa); the 1R0749 diesel filter uses a glass fiber filter element, with a filtration precision of 5μm, 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: -55°C to 320°C (for brake pads, flue temperature controllers, and impellers), suitable for cold northern drilling sites, high-temperature boiler rooms, and desert oil fields.

• Pressure Range: 0-35MPa (for pressure regulators, check valves, mud pipe connectors, and filters), meeting the high-pressure requirements of oil drilling rigs, hydraulic systems, and mud pipelines.

• Environmental Resistance: IP55-IP67 protection rating (for electrical controllers, air filters, and switches), dustproof, waterproof, and anti-vibration (≤ 18g), suitable for outdoor oil drilling rigs, mining sites, and industrial workshops.

• Corrosion Resistance: 304/316L stainless steel, Viton (for O-rings), carbide (for roller bits), 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: Connecting rod 107-7330 can bear tensile force up to 90000N, ZJ70DB brake pads BK-1-7A can provide braking force up to 1350N·m, and 6″ HJ617G roller bit can withstand drilling pressure up to 50MPa—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:

• Piston Pin 1388506 & Connecting Rod 107-7330: Check the piston pin for wear or deformation every 6 months; add lubricating oil (ISO VG 46) to the pin and connecting rod joint every 2 months; replace the piston pin if wear exceeds 0.05mm to prevent engine damage.

• ZJ70D Pressure Regulator PRM2PP17S40: Calibrate the regulator every 6 months to ensure pressure adjustment accuracy; clean the spool every 12 months to prevent clogging by hydraulic oil impurities; check for oil leakage and tighten connections as needed.

• ZJ70DB Brake Pads BK-1-7A: Inspect the brake pads for wear every 3 months; replace them if the wear thickness exceeds 3.5mm; clean the brake disc surface to remove dust and debris, ensuring effective braking and reducing noise.

• E5EZ Flue Temperature Controller: Clean the temperature sensor every month to remove dust and soot; check the wiring connections for looseness every 3 months; calibrate the controller every 6 months to ensure temperature measurement accuracy.

• Air Filters 3827643, 3827589 & Diesel Filter 1R0749: Replace the air filter elements every 3 months; replace the 1R0749 diesel filter every 2000 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:

piston pin 1388506

PTOdriven gear 9274893 Connecting rod 107-7330

Manual pressure regulator\ZJ70D PRM2PP17S40

Parallel transfer case assembly Z01030000002AA

641102058 Casing 5×4×14

DW40C0707YL8H2207 Oil pump

Brake device ZJ70DB Check valve KG-61

J-OIL SEAL,, p/n 5303920470

DH2147 Impeller

8″Turbine flowmeter 9A-100012094

Boiler WNS1.0-1.25-YQ flue temperature controller E5EZ

Mud pipe double male connector\ZJ70 Φ200-220 35MPa

Work caliper brake handle TLP23L/S

Main carriage ZJ30C drilling rig and carriage assembly Z01030000002AA

bearing 4500100008

Boiler WNS2-1.25-5Y liquid level switch 61F-G FLOATLESS

BL5013 Cover Plate

air filter 3827643Water Pump Assembly 20431484

air filter 3827589valve rocker shaft 4N5614

Suction filter 5400200008

G10110 Volute Liner

7716-SP1 Portable thickener lid sealing ring P-4080

brake pads ZJ70DB BK-1-7A

clutch torsion bar AVB600*250

Supercharger repair kit 6V9727air compressor 229990

emergency brake valve/quick release valve SH361-3517

diesel filter 1R0749starter 181100-3381

Disk drive W24-08-303

Dynamic friction disc assemblyW24-08-304

oil return filter DQ70 RFA-100×100LY-T 2.4.02.001

Valve plate VA20-MA3

gear P3000019AA

GAHF8056QU1 AHF Impeller

B08030200001 Flat washer

oRing 530301011030053001

Brake head (working) KQ-21 (ZJ70DBS- ZJ30DBS)

Hydraulic control valve\ZJ30

Brake device ZJ30C hydraulic tank oil suction filter TF-160XL-C

Valve A35-DA53/DAV35-DA4

Mud logging instrument CPS-KQ-VI Hydrogen generator CYH-500

dynamo 24V 35A OO-ring 6V9028

Air source treatment assembly JYK70A

Electronic pressure controller FKQ1280-8 YKD-II

Inserted Carbide Roller Bit 6″ HJ617G

NUT, FOR DRAWWORKS JC70B; Dimension: M20; GB/T6170-2000

MWD type inclinometer current-limiting ring sleeve fixed clip 981828

Master switch FKQ640-6 380V 6A

Line filter\ZJ50LDB ZUI-E25×10BD-P

spring mount B600-02000073

Brake device ZJ70DB hydraulic disc brake seal ring C2 F015

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: Piston Pin 1388506 Wear Causing Engine Noise

Fault Phenomenon: An industrial engine produced abnormal noise during operation, and power output decreased. Inspection: The piston pin 1388506 was severely worn (wear thickness ≥ 0.06mm), causing loose fit with the piston and connecting rod.Solution: Replace the worn piston pin with a new 1388506, add lubricating oil to the joint, and adjust the piston clearance. Result: The engine noise disappeared, power output was restored, and the engine operated stably for 11 months.

Case 2: ZJ70D PRM2PP17S40 Pressure Regulator Malfunction

Fault Phenomenon: A ZJ70D drilling rig’s hydraulic system pressure was unstable, causing the rig to operate erratically. Inspection: The PRM2PP17S40 pressure regulator’s spool was clogged with impurities, and the adjustment knob was loose. Solution: Disassemble the regulator, clean the spool with hydraulic oil, reassemble, calibrate the pressure, and tighten the adjustment knob. Result: Hydraulic pressure stabilized within 0-35MPa, the rig operated smoothly, and no further pressure issues occurred.

Case 3: E5EZ Flue Temperature Controller Inaccuracy

Fault Phenomenon: A WNS1.0-1.25-YQ boiler’s E5EZ flue temperature controller displayed inaccurate readings, leading to inefficient combustion. Inspection: The controller’s sensor was covered in soot, and the wiring connection was loose. Solution: Clean the sensor with a soft brush, tighten the wiring connections, and calibrate the controller. Result: The controller displayed accurate temperature data, boiler combustion efficiency improved by 13%, and energy consumption decreased.

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 18-34% 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 piston pin 1388506, ZJ70D PRM2PP17S40 pressure regulator, ZJ70DB BK-1-7A brake pads, E5EZ flue temperature controller, 1R0749 diesel filter, 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.