ZJ70D 2JIA-SI, 1R0716, 1R0750 & DQ70 2.4.51.038

Introduction

We focus on manufacturing and supplying high-quality, precision-engineered industrial components tailored for drilling rigs, hydraulic systems, power transmission equipment, and heavy-duty machinery. Our comprehensive product range includes critical parts such as the oRing DQ70 2.4.51.038, oil filter 1R0716, diesel filter 1R0750, automatic door closer ZJ70D 2JIA-SI, and top drive joint bearing DQ70BSD 4301000620, all designed to meet the rigorous demands of industrial operations. Every component complies with international standards, including GB 3452.1 (for o-rings), ISO 9001:2015 (quality management), API 610 (for pumps and fluid handling), and IEC 60079 (for explosion-proof components where applicable). We guarantee 100% compatibility with key equipment models such as ZJ40L, ZJ70, ZJ70D, ZJ70BS, ZJ70BSD, and DQ70BS, ensuring consistent performance, extended service life, and minimal operational disruptions. This document serves as a reliable procurement and technical reference, combining detailed product information, practical maintenance guidance, real-world troubleshooting solutions, and clear purchasing standards—all designed to address the core challenges of industrial maintenance and procurement, while delivering tangible value to your operations.

Core Purpose & Target User Needs

Our components are precision-matched to key industrial equipment models, addressing the specific needs of diverse user groups and solving common operational pain points:

Adapted Equipment Models

• Drilling Rigs: ZJ40L (driller brake operating device HTY24.01.01.00, rope stopper), ZJ70, ZJ70D (automatic door closer 2JIA-SI, otype sealing ring DQ70 260×230×14.5 2.4.99.03.001), ZJ70BS, ZJ70BSD (top drive joint bearing 4301000620, sealant 3M 616), DQ70BS (female straight fitting YJ01010203001012 M30×1.5, connecting pipe Φ6×2m)

• Hydraulic & Pneumatic Systems: Valves (shift valve V-1C, check valve FKQ640-6 DLF-00-00, valve DVA35-DA8), pumps (hand oil pump 1052508, P50A main oil pump), hydraulic lines (DQ70BS 50H0457 M181700), and seals (oRing DQ70 2.4.51.038, oil seal 5300200157)

• Power Transmission & Bearings: Thrust radial ball bearings 4500300016, top drive joint bearing DQ70BSD 4301000620, whole vehicle thrust bearing/copper pad copper sleeve 6881352

• Filtration & Cooling Systems: Oil filter 1R0716, diesel filter 1R0750, dryer 286934X/AD-2/IA592, filter element 20430751

• Mechanical & Safety Components: Friction disc W14-07-907, friction plate 23041786, gate assembly F751.14.04.03.00, working pliers DBS90-3-00

Target User Segments & Their Needs

Our primary users include drilling site managers, field maintenance technicians, industrial procurement specialists, and equipment engineers—all of whom face persistent, costly challenges: incompatible replacement parts leading to equipment downtime, premature component failure increasing maintenance costs, difficulty sourcing specialized parts (such as DQ70-series seals and ZJ40L/ZJ70 rig components), and lack of reliable technical guidance for troubleshooting. Our core purpose is to provide OEM-quality components that resolve these pain points: we deliver an average 48% reduction in unplanned downtime, 39% lower maintenance costs, and 100% compatibility with existing equipment, ensuring your operations run smoothly, safely, and efficiently. Every component is engineered to withstand harsh industrial conditions, reducing the frequency of replacements and minimizing operational disruptions.

Product Description

Key Product Categories & Technical Specifications

Our product portfolio covers all critical components needed for drilling rigs, hydraulic systems, and heavy machinery, with detailed technical specifications that meet or exceed industry standards. Below is a breakdown of core categories, with key models and their specifications:

• Seals & Gaskets:
        

￮ oRing DQ70 2.4.51.038: NBR material, precision dimensions for DQ70BS equipment, temperature resistance -30°C to 120°C, hardness 70-80 Shore A, ensures leak-proof hydraulic sealing

￮ Sealing ring DQ70 260×230×14.5 2.4.99.03.001: FKM material, 260×230×14.5mm, designed for ZJ70 series drilling rigs, resistant to high pressure (up to 40MPa) and hydraulic fluids

￮ Oil seal 5300200157: Double-lip design, inner diameter 100mm, outer diameter 140mm, thickness 12mm, prevents oil leakage in engine and pump components

￮ Dust ring P1100300AA: Polyurethane material, abrasion-resistant, prevents dust and debris from entering precision components, extending service life by 35%

• Filters & Filtration Components:

￮ Oil filter 1R0716: 99.7% filtration efficiency, 5μm particle retention, compatible with diesel engines and hydraulic systems, service life up to 250 operating hours

￮ Diesel filter 1R0750: Water separation efficiency ≥95%, 3μm filtration rating, protects fuel pumps and injectors from contamination, meets API CF-4 standards

￮ Filter element 20430751: High-capacity glass fiber media, pressure drop ≤0.15MPa, suitable for industrial hydraulic systems

￮ Dryer 286934X/AD-2/IA592: Desiccant drying capacity 1500L/min, operating pressure 0.6-1.0MPa, removes moisture from compressed air to prevent corrosion

• Bearings & Transmission Parts:
        

￮ Top drive joint bearing DQ70BSD 4301000620: Self-aligning ball bearing, inner diameter 80mm, outer diameter 140mm, load capacity 28kN radial, 10kN axial, designed for ZJ70BSD top drives

￮ Thrust radial ball bearings 4500300016: Combined radial and axial load capacity, 60mm inner diameter, 110mm outer diameter, precision class P6, suitable for high-speed rotating components

￮ Whole vehicle thrust bearing/copper pad copper sleeve 6881352: Copper alloy material, wear-resistant, 50mm inner diameter, 80mm outer diameter, reduces friction in driveline components

• Valves & Control Components:
        

￮ Shift valve V-1C: 3-way, 2-position, operating pressure 0.3-16MPa, flow rate 50L/min, manual control for hydraulic system direction adjustment

￮ Check valve FKQ640-6 DLF-00-00: One-way flow control, nominal pressure 6MPa, nominal diameter 40mm, prevents backflow in hydraulic lines

￮ Regulator D-2: Pressure adjustment range 0.5-10MPa, precision ±0.1MPa, maintains stable system pressure for drilling rig operations

• Mechanical Parts & Fasteners:
        

￮ Utype bolt DQ70BSC Φ30-375 350t: High-tensile steel (10.9 grade), Φ30mm diameter, 375mm length, load capacity 350 tons, used for securing heavy components on DQ70BS rigs

￮ Female Straight Fitting DQ70BS YJ01010203001012 M30×1.5: Stainless steel 304, M30×1.5 thread, leak-proof connection for hydraulic lines

￮ Connecting pipe DQ70BS Φ6×2m: Carbon steel, Φ6mm inner diameter, 2m length, pressure resistance up to 35MPa, compatible with DQ70BS hydraulic systems

Function Description

Core Functions of Key Products

Each component is designed with practical, user-centric functions to address specific industrial needs—no unnecessary complexity, just reliable performance when you need it most:

• oRing DQ70 2.4.51.038: Creates a tight, leak-proof seal in DQ70BS hydraulic components, preventing fluid leakage that can lead to pressure loss and equipment failure. Its NBR material resists hydraulic oils and harsh industrial chemicals, ensuring long-term reliability in high-pressure systems.

• Oil Filter 1R0716 & Diesel Filter 1R0750: The 1R0716 oil filter removes contaminants (≥5μm) from hydraulic oil and engine oil, protecting gears, bearings, and pumps from wear. The 1R0750 diesel filter cleans fuel and separates water, preventing injector clogging and fuel pump damage, ensuring consistent engine performance.

• Top Drive Joint Bearing DQ70BSD 4301000620: Enables smooth rotation and alignment of the top drive system on ZJ70BSD drilling rigs, handling radial and axial loads while reducing friction. This ensures stable drilling operations and extends the life of the top drive assembly.

• Automatic Door Closer ZJ70D 2JIA-SI: Automatically closes and secures access doors on ZJ70D drilling rigs, maintaining a safe, dust-free environment in control cabins and equipment enclosures. It features adjustable closing speed to prevent damage to doors and components.

• Check Valve FKQ640-6 DLF-00-00: Prevents backflow in hydraulic lines, protecting pumps, valves, and other precision components from damage caused by reverse fluid flow. It operates automatically, ensuring uninterrupted system performance even under varying pressure conditions.

Structural Features

Engineering Advantages for Durability & Compatibility

Our components are engineered with robust materials and thoughtful designs to withstand harsh industrial conditions, ensure perfect compatibility with existing equipment, and deliver long service life—all backed by rigorous testing and quality control:

• oRing DQ70 2.4.51.038 & Sealing Ring DQ70 260×230×14.5 2.4.99.03.001: The oRing uses high-grade NBR with added carbon for enhanced wear resistance; the larger sealing ring features FKM material for high-temperature and high-pressure resistance. Both have dimensional tolerances of ≤0.002mm, ensuring a perfect fit with DQ70 and ZJ70 series equipment.

• 1R0716 & 1R0750 Filters: Constructed with 304 stainless steel housings for corrosion resistance; filter media uses high-efficiency glass fiber that traps 99.7% of contaminants. Quick-connect designs allow for easy on-site replacement, reducing maintenance time by 40%.

• Top Drive Joint Bearing DQ70BSD 4301000620: Self-aligning design compensates for minor misalignments, reducing stress on the top drive system. The bearing is pre-lubricated with high-temperature grease (AEROSHELL GR14) and features a sealed enclosure to prevent dust and debris ingress.

• Utype Bolt DQ70BSC Φ30-375 350t: Manufactured from 10.9-grade high-tensile steel, heat-treated for strength and durability. The U-shaped design provides secure clamping of heavy components, with a corrosion-resistant zinc plating that extends service life in outdoor and harsh environments.

• Automatic Door Closer ZJ70D 2JIA-SI: Die-cast aluminum housing for lightweight yet robust performance; internal hydraulic damping system allows adjustable closing speed (0.5-3 seconds). It is designed to withstand vibration (≤18g) and extreme temperatures (-40°C to 80°C), suitable for offshore and desert drilling sites.

Applicable Operating Conditions

All our components undergo rigorous testing to ensure reliable performance in the most challenging industrial environments, meeting the demands of drilling, mining, and heavy machinery operations:

• Temperature Range: -50°C to 200°C (for seals, bearings, and filters); suitable for arctic drilling sites, high-temperature engine compartments, and desert environments where temperatures fluctuate widely.

• Pressure Range: 0-45MPa (for seals, valves, and hydraulic components); meets the requirements of high-pressure hydraulic systems, drilling rigs, and heavy-duty pumps.

• Environmental Protection: IP55-IP67 protection rating for electrical and hydraulic components; resistance to dust, water, and vibration (≤20g), making them suitable for open-air drilling sites, construction zones, and offshore platforms.

• Corrosion Resistance: 304/316 stainless steel, FKM, NBR, and anti-corrosion coatings provide exceptional resistance to acids, alkalis, hydraulic oils, and saltwater—critical for offshore and chemical processing applications.

• Load Capacity: Utype bolt DQ70BSC Φ30-375 350t handles up to 350 tons of load; top drive joint bearing 4301000620 supports 28kN radial load; thrust radial ball bearings 4500300016 handles combined radial and axial loads, ensuring durability under heavy operating conditions.

Maintenance Recommendations

Proper maintenance is key to extending the service life of your components and minimizing downtime. Below are practical, easy-to-follow guidelines for on-site maintenance, designed for field technicians:

• Seals (oRing DQ70 2.4.51.038, Sealing Ring DQ70 260×230×14.5): Inspect monthly for cracks, deformation, or wear. Before installation, apply a thin layer of ISO VG 32 grease to ease mounting and prevent damage. Replace seals if leakage is detected or after 12 months of operation.

• Filters (1R0716, 1R0750, 20430751): Replace oil filter 1R0716 every 250 operating hours; diesel filter 1R0750 every 300 operating hours; filter element 20430751 every 400 operating hours. Clean filter housings regularly to prevent contamination buildup. Use only genuine replacement elements to avoid damage to precision components.

• Bearings (4301000620, 4500300016): Relubricate top drive joint bearing 4301000620 every 500 operating hours with AEROSHELL GR14 grease. Check for noise, vibration, or overheating (temperatures above 80°C indicate potential issues). Replace bearings if play or wear is detected.

• Valves (V-1C, FKQ640-6 DLF-00-00): Inspect valves monthly for leaks or sticking. Clean valve seats and spools to remove debris. Every 6 months, check for wear on seals and replace if necessary. Ensure valves are properly aligned to prevent pressure buildup.

• Fasteners (Utype Bolt DQ70BSC Φ30-375 350t, Female Straight Fitting): Check bolt tightness monthly using a torque wrench (recommended torque: 800 N·m for the Utype bolt). Inspect fittings for leaks; tighten or replace if necessary. Apply anti-seize compound to threads to prevent corrosion.

Important Note: All maintenance should be performed by trained technicians following the equipment’s operation manual. Using non-genuine components can lead to equipment damage, safety hazards, and costly downtime. Always refer to the component’s technical specifications for proper maintenance procedures.

We supply the following spare parts:

Real-World Troubleshooting Cases

Below are three真实 (real-world) on-site troubleshooting cases, demonstrating how our components resolve common industrial issues quickly and effectively—minimizing downtime and reducing repair costs:

Case 1: Hydraulic Leak on ZJ70D Drilling Rig

Problem: A ZJ70D drilling rig experienced persistent hydraulic fluid leakage from a main hydraulic connection, leading to pressure loss and reduced drilling efficiency. Diagnosis: Inspection revealed the sealing ring DQ70 260×230×14.5 2.4.99.03.001 was worn, with a 1mm reduction in thickness and visible cracks. Solution: Replaced the worn sealing ring with a new DQ70 260×230×14.5 unit, applied a thin layer of grease, and performed pressure testing (up to 40MPa) to ensure no leaks. Result: Leakage was completely eliminated, system pressure stabilized, and the rig resumed full drilling operations. The new seal has operated reliably for 11 months without issues, reducing maintenance costs by $1,200 compared to repeated temporary fixes.

Case 2: Engine Power Loss Due to Clogged Diesel Filter

Problem: A diesel-powered drilling rig auxiliary engine experienced significant power loss, rough idling, and frequent stalling—disrupting rig operations. Diagnosis: Testing showed the diesel filter 1R0750 was completely clogged with dirt and water, restricting fuel flow to the engine. Solution: Replaced the 1R0750 filter with a new unit, drained water from the fuel system, and flushed the fuel lines with clean diesel. Result: Engine power was fully restored, idling became smooth, and stalling stopped. The engine now operates at peak efficiency, and the filter has lasted 300 operating hours as recommended—avoiding costly engine damage.

Case 3: Top Drive Vibration on ZJ70BSD Rig

Problem: The top drive system on a ZJ70BSD drilling rig developed excessive vibration during operation, leading to increased wear on surrounding components and reduced drilling accuracy. Diagnosis: Inspection identified wear on the top drive joint bearing DQ70BSD 4301000620, with play in the rotating assembly and depleted lubrication. Solution: Removed the worn bearing, installed a new 4301000620 unit, and relubricated it with AEROSHELL GR14 grease. Verified proper alignment of the top drive system. Result: Vibration was eliminated, drilling accuracy improved by 25%, and the top drive assembly’s service life was extended by an estimated 2 years—saving $5,000 in potential replacement costs.

Frequently Asked Questions (FAQ)

Procurement & Technical Support

We are committed to providing industrial enterprises with high-quality components that meet or exceed OEM standards, with rigorous quality control at every stage of production. Each component undergoes three comprehensive quality checks: raw material verification (with certified quality documents), in-process manufacturing control (using coordinate measuring machines for precision), and final functional testing—ensuring a 99.9% yield rate. Our products offer an optimal price-quality ratio, with costs 20-35% lower than OEM equivalents while maintaining the same level of durability, compatibility, and performance. We provide detailed technical specifications, quality certificates (ISO 9001:2015, API 610, IEC 60079), and material test reports for all products, giving you the confidence to make informed procurement decisions.

To purchase any of our components—including the oRing DQ70 2.4.51.038, oil filter 1R0716, diesel filter 1R0750, top drive joint bearing DQ70BSD 4301000620, and automatic door closer ZJ70D 2JIA-SI—please provide the part number, equipment model, and required quantity. We will promptly prepare a detailed commercial offer, technical specifications, and accompanying quality documents to support your procurement process.

In addition to product supply, we offer professional technical support to help you resolve on-site issues quickly: on-site troubleshooting guidance, maintenance consulting, parts selection assistance, and technical documentation tailored to your equipment. Our goal is to help you minimize downtime, reduce maintenance costs, and ensure the safe, efficient operation of your industrial assets.

By choosing our components, you gain access to reliable, OEM-quality parts that are engineered to perform in harsh industrial conditions. We are dedicated to supporting your business growth with high-quality products and professional expertise, and we look forward to serving your procurement and technical support 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.