DQ004 Series & 20411-16-05/20491-16-05×2S-05×1150 Rotary Drilling Rig Rotary Head Full Set

1. Core Purpose & Target Application

This complete spare parts suite centered on DQ004 series rotary head components and 20411-16-05/20491-16-05×2S-05×1150 high-pressure hose assemblies is professionally engineered for conventional rotary drilling rig rotary head systems. It solves prevalent field pain points including rotary head seal leakage, friction sleeve wear, brake disc failure, hydraulic pipeline pressure loss, and gear transmission jitter under long-term full-load operation. Verified by 2700-hour continuous cyclic load testing compliant with industrial drilling equipment specifications, all components maintain stable mechanical sealing accuracy and power transmission efficiency under 4.8g working vibration intensity. These standardized replacement parts precisely meet the refined maintenance, overhaul, and component upgrade demands of geotechnical drilling, oilfield exploration, and well construction engineering teams, effectively eliminating unplanned rig downtime caused by aging and mismatched original rotary head accessories.

2. Product Introduction & Core Functions

This full-component set covers hydraulic hose assemblies, transition joints, core rotary head mechanical parts, sealing assemblies, transmission structures, and electrical wiring brackets, forming a complete supporting system for drilling rig rotary head operation. The 20411-16-05 series custom hose assemblies and 1CH-16-18 transition joints ensure stable high-pressure hydraulic transmission and seamless pipeline conversion, eliminating flow resistance and pressure attenuation in hydraulic circuits. DQ004 series core parts including spindles, friction sleeves, packing boxes, and multi-type sealing glands undertake core rotation, friction braking, and sealing protection functions. Rotary gears and adjustment sleeves calibrate transmission gaps to guarantee consistent rotary output torque. Anti-loosening hoop assemblies and hanging plate structures strengthen overall structural stability, while main wiring frames standardize internal circuit layout to avoid signal and circuit faults during long-term operation.

3. Structural Characteristics

All products adopt industry-standard modular structural design for direct field replacement without secondary cutting or modification, fully complying with rotary drilling rig mechanical assembly specifications. Sealing components integrate lip oil seal, star oil seal, and chen-shaped oil seal composite structures, achieving multi-channel anti-leakage protection for rotary head dynamic and static gaps. Friction sleeves and brake discs adopt high-density wear-resistant molding technology to reduce friction attenuation under frequent braking cycles. Transmission parts such as rotary gears and adjustment pads maintain ultra-precise tolerance control to ensure meshing stability. Hydraulic hose assemblies feature reinforced multi-layer tensile structure to resist bending and extrusion damage during rig operation. All structural accessories undergo stress relief treatment to avoid structural deformation under long-cycle alternating load.

4. Applicable Working Conditions

This series of spare parts adapts to harsh drilling operation scenarios, supporting continuous stable operation within -35°F to 250°F ambient temperature range. It fully matches conventional rotary drilling rig rotary head systems, suitable for oilfield exploration, geological prospecting, water well drilling, and foundation construction working sites. Hydraulic components stably bear 2800 psi continuous working pressure; friction and braking parts adapt to frequent start-stop and high-torque rotation working conditions. Sealing assemblies resist mud erosion, dust deposition, and temperature cycling aging, maintaining zero leakage operation in long-duration field drilling tasks.

5. Professional Maintenance & On-Site Engineer Operational Tips

Summarized from frontline drilling maintenance experience, standardized maintenance cycles avoid premature component failure. Replace combined sealing glands and oil seal assemblies every 1700 working hours to prevent micro-leakage caused by aging and fatigue. Inspect friction sleeve wear and brake disc flatness every 700 hours, replacing worn parts promptly to avoid braking failure. Calibrate adjustment sleeves and spacer gaps every 900 hours to ensure accurate gear meshing and stable torque output. Clean hydraulic hose joints and transition joint channels regularly to prevent mud blockage and pressure loss. Avoid excessive torque during sealing gland installation to prevent extrusion deformation of internal oil seals.

We supply the following spare parts:

6. On-Site Field Maintenance Cases

Case 1: Northeast Oilfield Drilling Site, Conventional Rotary Drilling Rig, Full Rated Torque Load. Fault: Rotary head hydraulic oil leakage caused by aging sealing gland assembly. Repair: Replaced full set of DQ004 multi-type sealing glands and lip oil seal glands. Post-repair index: Dynamic sealing leakage completely eliminated, maintaining zero seepage after 1000 hours of continuous operation. Customer feedback: Solved long-term oil leakage failure and reduced hydraulic oil consumption.

Case 2: Northwest Geological Drilling Site, Rotary Head Transmission System. Fault: Unstable rotation and jitter caused by worn friction sleeve. Repair: Installed new DQ004.12.03 friction sleeve and adjustment pad. Post-repair index: Rotary speed fluctuation controlled within 0.2 r/min, transmission smoothness fully restored. Customer feedback: Drilling efficiency improved significantly with no intermittent jitter during high-load operation.

Case 3: South China Water Well Drilling Site, Hydraulic Pipeline System. Fault: Insufficient hydraulic power caused by aging hose assembly pressure loss. Repair: Replaced 20411-16-05×2S-05×1150 high-pressure hose assembly and 1CH-16-18 transition joint. Post-repair index: Hydraulic system pressure holding capacity recovered to factory standard, power output stable. Customer feedback: Eliminated slow drilling and power insufficiency faults.

Case 4: Offshore Foundation Drilling Site, Rotary Head Braking System. Fault: Braking delay caused by deformed brake disc and loose anti-loosening hoop. Repair: Replaced DQ004.12.10 brake disc and DQ004.12.28.00 anti-loosening hoop assembly. Post-repair index: Braking response time restored to 0.15s, zero loosening after 1100 vibration cycles. Customer feedback: Braking system safe and reliable, adapting to high-frequency working conditions.

7. Frequently Asked Questions

8. Procurement & Technical Reference Guide

This full set of DQ004 series rotary head spare parts and supporting hydraulic components strictly adheres to national and industrial drilling equipment manufacturing standards, with all finished products passing 2700-hour continuous load aging testing and dimensional precision inspection. Covering full-chain core accessories for rotary head sealing, transmission, braking, hydraulic connection, and structural fixation systems, these products provide standardized procurement specifications and professional on-site fault-solving technical references for drilling engineering construction and equipment management. The unified modular design supports one-stop matched procurement, effectively solving the industry problems of scattered rotary head spare part models and difficult on-site matching. Professional technical verification and installation guidance services are available to help users select matching parts and complete standardized equipment maintenance and upgrade, ensuring long-term stable and efficient operation of drilling equipment.