Product Introduction
This curated assortment covers all mission-critical mechanical, hydraulic, sealing, and transmission components for the Jinghong DQ-70 top drive, including main shafts, IBOP parts, seal kits, O-rings, hydraulic cylinder gland kits, gear assemblies, bearings, filters, pipe clamp components, and precision fasteners. All parts undergo factory pressure and load testing validated for the top drive’s rated 10000 PSI hydraulic operating pressure and 70-ton lifting capacity, with full material traceability and compliance with API oilfield equipment standards. The lineup features hardened alloy steel structural parts, high-pressure resistant elastomer seals, precision-machined gear components, and heavy-duty bearings, fully mapped to original DQ-70 part numbers for simplified inventory management and emergency field repairs.
Functional Performance Specifications
These Jinghong DQ-70 top drive spare parts deliver industry-leading oilfield reliability: OEM seal kits and gland assemblies provide leak-free operation at 10000 PSI hydraulic pressure, with a service life of 20,000+ operating hours; gear drive components withstand high rotary torque loads up to 280MPa, reducing friction wear by 45%; IBOP and ball valve block parts maintain stable well control performance with zero fluid leakage; filter assemblies ensure clean hydraulic fluid circulation, extending hydraulic component life by 35%; and heavy-duty bearings absorb extreme rig vibration, preventing premature failure during continuous drilling operations.
Structural & Material Features
- OEM Precision Machining: All main shafts, gears, and structural components are manufactured to tight tolerances (±0.0003 inch), ensuring perfect fitment with Jinghong DQ-70 top drive assemblies per original design specifications.
- High-Strength Premium Materials: Main shafts and gears use quenched and tempered alloy steel, seals use oil-resistant fluoroelastomer, bearings use high-load bearing steel, and fasteners use 12.9-grade high-strength carbon steel for heavy-duty durability.
- Multi-Stage Sealing Design: Combined oil seals, O-rings, and dust rings create a robust sealing system for hydraulic cylinders and pipe clamps, preventing fluid loss and contamination from drilling mud.
- Vibration-Dampened Construction: Reinforced bearing seats, locking rings, and retaining washers absorb heavy rig vibration, eliminating component loosening and wear during high-torque drilling.
- Modular Repair Kits: Pre-assembled gland kits and seal sets streamline top drive overhaul processes, cutting maintenance time by 60% during critical repairs.
Applicable Operating Conditions
These spare parts are built for extreme land and offshore drilling environments, optimized for the Jinghong DQ-70 70-ton top drive installed on deep well drilling rigs, offshore platforms, and workover units. They perform reliably in ambient temperatures ranging from -40°F to 160°F, resist exposure to drilling mud, hydraulic oil, saltwater, and heavy rig vibration, and comply with hazardous location safety standards for offshore and onshore drilling operations. All hydraulic components are rated for continuous 10000 PSI high-pressure duty.
Maintenance & Service Recommendations
- Inspect top drive hydraulic cylinder seals, gland kits, and O-rings every 6 months for wear, swelling, or leakage; replace degraded components immediately to maintain hydraulic pressure and prevent downtime.
- Check IBOP rollers, ball valve blocks, and main shaft seals quarterly for wear or damage; replace worn parts to sustain reliable well control and rotary performance.
- Replace hydraulic filter elements, transmission oil filters, and return filters every 5,000 operating hours to ensure clean fluid circulation and protect hydraulic components.
- Inspect gear drive assemblies, bearings, and locking rings semi-annually for fatigue or scoring; replace worn gears and bearings to maintain smooth torque transmission.
- Retorque all high-strength hex screws and cylindrical pins to OEM torque specifications every 8,000 operating hours, replacing damaged fasteners to prevent structural loosening.
- Stock critical high-wear parts (seal kits, O-rings, IBOP rollers, filters, bearings) at recommended minimum levels to avoid unplanned DQ-70 top drive shutdowns.
- We supply the following spare parts:
| Safety sub NC50 | T75020519 | EA |
| Ball Valve Block | DQ70BS-GZ-02-Ⅷ | EA |
| Ball Valve Block | DQ70BS-GZ-02-Ⅶ | EA |
| Main shaft | 70010420Ⅲ | EA |
| Main shaft | 70010420Ⅳ | EA |
| I BOP 10000psi to DQ70 Top Drive | EA | |
| IBOP Roller (Small) | T7540202016 | EA |
| IBOP Roller (Large) | T7540202017 | EA |
| Central Tube (Feeding Tube) | NT754-01-03-08-VI | EA |
| Flushing Tube Seal (Feed Tube Seal) | NT754-01-03-08-X | EA |
| O-ring 2 | NT754-01-03-08-VIII | EA |
| Cup | NT754-01-03-08-XI | SET |
| O-ring 120×5.7 | GB/T1235-76 | SET |
| O-ring 135.x5.7 | GB/T1235-76 | EA |
| O-ring 142×5.7 | GB/T1235-76 | SET |
| O-ring 106×5.7 | GB/T1235-76 | EA |
| O-ring | M0103803.1 | EA |
| Gland Kit for Pipe Clamp Cylinder: | EA | |
| Oil seal-1pc | M02200 | SET |
| O-ring-1pc | SIT M03160 | SET |
| Dust ring -1pc | WSA M05160 | EA |
| O-ring-1pc | M012605.7 | EA |
| Seal Bead Ring-16pcs | T754020513 | SET |
| High Pressure Filter Assembly | DQ70-D-08 | EA |
| High Pressure Filter Element | YQ0102063 | EA |
| Trans Oil Filter Element | YQ0103160 | EA |
| Oil Return Filter | YQ0203160100 | EA |
| Gland Kit for Hydraulic Cylinder | MV04100 | EA |
| Oil seal, 1pc | M02100 | EA |
| Guide Support Belt 2pcs | M06100 | EA |
| Guide Support Belt 2pcs | M07070 | EA |
| Dust ring, 1pc. | M05070 | EA |
| U-ring, 1pc | M04070 | EA |
| Oil-resistant O-ring, 2pcs. | M0106005.7 | EA |
| Oil-resistant O-ring, 2pcs. | M0110003.5 | EA |
| Flat washers | B08030240001 | EA |
| Inner Main Shaft Sealing Sleeve | T754010407Ⅰ | EA |
| Solution protection lid | T754010457 | EA |
| 205 Shaft Clamp | T754010459 | EA |
| Sealing Solzo | T750104562 | EA |
| Dividing Ring | T754010411 | EA |
| Upper sealing sleeve | T754010460 | EA |
| Hex set screws | B0304012020140002 | EA |
| Female cylindrical pin | 70010427 | EA |
| Female cylindrical pin | B0202024080100001 | EA |
| Secondary Passive Gear | 700104131 | EA |
| Two-stage drive gear | 70010403 | EA |
| Primary Drive Gear | 70010401+70010432 | EA |
| Upper Locking Ring | T75010415 | EA |
| Sealed inner sleeve | 70010431Ⅰ | EA |
| Retaining ring | 70010430 | EA |
| About Shaped Ring | M014655.7WCJHZ | EA |
| About Shaped Rubber O-Ring | M012503.1WCJHZ | EA |
| About Shaped Rubber O-Ring | M010543.1WCJHZ | EA |
| O Shaped Sealing Tape | M10045.7 | EA |
| About Shaped Rubber O-Ring | M010603.1WCJHZ | EA |
| About Shaped Rubber O-Ring | M010383.1WCJHZ | EA |
| About Shaped Rubber O-Ring | M010863.1WCJHZ | EA |
| About Shaped Rubber O-Ring | M010202.4WCJHZ | EA |
| air cleaner | Y0Q010401042 | EA |
| level meter | Y0N0602042 | EA |
| Hex screw | B0305024065100001 | EA |
| Hex screw | B0305024060100001 | EA |
| Retaining washer | B08040240001 | EA |
| Roller thrust bearing | Z0806260070 | EA |
| Tapered roller thrust bearings | Z0905292068 | EA |
| Cylindrical Roller Bearings | Z0102220007 | EA |
| Spherical Roller Bearing | Z0601110007 | EA |
| Tapered roller thrust bearings | Z0210234068 | EA |
| Spherical Roller Bearing | Z0601110007 | EA |
| Tube Clamp Breadcrumb 120x32x13 | W05120 | EA |
| Locking die | T75020403 | EA |
| Sealed pipe clamp pin | T754020506 | EA |
Field Failure Repair Case Studies
Case 1: Hydraulic Cylinder Seal Leakage
A Jinghong DQ-70 top drive experienced hydraulic fluid leakage from a degraded pipe clamp cylinder gland kit, causing unstable pipe clamping. Installing the OEM MV04100 gland kit and replacement seals eliminated leakage, restoring full hydraulic clamping force.
Case 2: IBOP Roller Wear Causing Malfunction
Worn small and large IBOP rollers led to improper IBOP actuation, disrupting well control operations. Replacing the OEM T7540202016 small rollers and T7540202017 large rollers fixed actuation issues, restoring reliable IBOP functionality.
Case 3: Main Shaft Seal Degradation
A damaged inner main shaft sealing sleeve caused lubricant loss and contamination, risking main shaft failure. Swapping in the OEM T754010407Ⅰ sealing sleeve and matching O-rings restored proper sealing, protecting the main shaft from wear.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts exclusively compatible with the Jinghong DQ-70 top drive? | Yes, this catalog features OEM-matched parts engineered solely for the Jinghong DQ-70 70-ton top drive, with direct drop-in fitment and no custom modifications required. |
| Do the hydraulic seals meet API 7K high-pressure standards? | Absolutely, all seal kits and O-rings comply with API 7K standards, rated for up to 10000 PSI hydraulic pressure for heavy-duty drilling use. |
| Can these gear assemblies handle the DQ-70’s full torque capacity? | Yes, the OEM primary and secondary drive gears are precision machined to withstand the DQ-70 top drive’s full rotary torque and 70-ton lifting load. |
Procurement Guidance
This Jinghong DQ-70 top drive spare parts catalog serves as both a formal oilfield procurement benchmark and a hands-on technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts that fail prematurely, reduce long-term top drive maintenance expenses, and uphold the safety and operational reliability of your rotary drilling system. Every part is a verified OEM-certified component that guarantees perfect fitment, consistent high-load performance, and full adherence to API and ISO drilling standards, making it the definitive resource for maintaining Jinghong DQ-70 top drives.
