Product Introduction
This curated assortment covers all mission-critical mechanical, hydraulic, sealing, and circulation components for the DBZ DQ450 TDS, including friction bushings, rotary seals, bearings, gooseneck assemblies, mud pipes/packing, BOP units, hydraulic pumps, explosion-proof solenoid valves, cooling devices, filters, and high-pressure hoses. All parts comply with API 7K, API 8C, and ISO 9001 quality benchmarks, with full material traceability and factory load testing up to 450-ton rated lifting capacity and 25MPa hydraulic pressure. The lineup features wear-resistant alloy bushings, high-pressure hydraulic components, oil-resistant rotary seals, precision tapered/roller bearings, and explosion-proof electrical parts, fully mapped to DBZ OEM part numbers for simplified inventory management and emergency field repairs.
Functional Performance Specifications
These DBZ DQ450 TDS spare parts deliver industry-leading top drive reliability: OEM friction bushings reduce rotational friction by 35%, supporting continuous 0–180 RPM top drive operation with a wear life of 12,000+ operating hours; precision bearings (32044/YB2, NU1038M/C4) handle radial/thrust loads up to 450 tons with an L10 service life of 25,000+ hours; OR-type rotary seals maintain zero mud leakage at 25MPa mud pressure; hydraulic piston pumps (A10V028DR) deliver consistent 25MPa hydraulic pressure for smooth top drive actuation; explosion-proof solenoid valves ensure safe hydraulic control in hazardous drilling environments; and air cooling devices maintain optimal operating temperatures even during prolonged heavy-duty drilling.
Structural & Material Features
- OEM Precision Machining: All mechanical components (bushings, bearings, guide rods) are manufactured to tight tolerances (±0.0003 inch), ensuring perfect fitment with the DQ450 TDS rotating assembly and eliminating misalignment-related wear
- Wear-Resistant Materials: Friction bushings use hardened alloy steel, rotary seals use high-grade fluoroelastomer, and mud pipes use stainless steel to resist abrasion from drilling mud and extend service life
- Hydraulic System Durability: High-pressure hoses, solenoid valves, and piston pumps feature corrosion-resistant construction, rated for 25MPa continuous pressure to withstand hydraulic system stress
- Modular Repair Design: Pre-assembled gooseneck, flushing pipe, and cooling modules reduce field overhaul time by 70%, minimizing non-productive rig downtime
- Safety-Centric Design: Explosion-proof electrical components, manual/automatic BOP units, and pressure gauges meet API hazardous location standards for rig safety compliance
Applicable Operating Conditions
These spare parts are built for harsh onshore/offshore drilling environments, optimized for the DBZ DQ450 Top Drive System used in mobile land rigs, offshore jack-up rigs, and deep-well drilling units. They perform reliably in ambient temperatures ranging from -40°F to 140°F, resist exposure to drilling mud, saltwater, oil-based fluids, and heavy rig vibration, and endure continuous high-torque rotational loads. Components are suitable for classified hazardous drilling locations and fully comply with API 7K/API 8C safety standards for top drive equipment.
Maintenance & Service Recommendations
- Inspect rotary seals, O-rings, and mud packing monthly for wear, cracking, or mud leakage; replace worn sealing components immediately to prevent lubricant contamination and mud loss
- Lubricate bearings, friction bushings, and rotating components with approved high-temperature drilling grease every 3,000 operating hours to reduce friction and prevent seizing
- Check hydraulic filters, suction filters, and hoses quarterly for clogging or damage; replace filters and damaged hoses to maintain consistent hydraulic pressure
- Inspect BOP units (manual/automatic) semi-annually for operational functionality; test sealing performance to ensure well control safety compliance
- Perform full bearing and rotating assembly inspection every 12 months or 15,000 operating hours; replace complete bearing sets during scheduled top drive overhauls
- Stock critical high-wear parts (seals, bushings, O-rings, filters, hydraulic valves) at recommended minimum levels to avoid unplanned top drive downtime
We supply the following spare parts:
| 1 | Friction bushing | DQ004.12.03 | pc |
| 2 | Friction bushing | DQ004.12.17 | pc |
| 3 | Double Lug Oil Seal | R01-FG | pc |
| 4 | Gooseneck assembled | DQ004.06.00 | set |
| 5 | Flushing pipe assembly | DQ004.04.00 | set |
| 6 | Mud Pipe | DQ004.04.02 | pc |
| 7 | Drilling mud packing | SL001.05.04 | pc |
| 8 | O-ring | GB/T3452.1 | pc |
| 9 | O-ring | GB/T3452.1 | pc |
| 10 | Strop | DH012.03 | pc |
| 11 | Hanging eyelet | DQ002.06.08.05.00 | pc |
| 12 | OR type rotary seal | OR 3200 033 00161F | pc |
| 13 | Double Lug Oil Seal | R01-FG | pc |
| 14 | Double Lug Oil Seal | R01-FG | pc |
| 15 | Bearing | Т1120 | pc |
| 16 | Bearing (cone) | 32044/YB2 | pc |
| 17 | Bearing (roller) | NU1038M/C4 | pc |
| 18 | Double Seal Oil Seal | R01-FG | pc |
| 19 | Double Seal Oil Seal | GTC002100 | pc |
| 20 | Piston accumulator | HXQ-L10/20-H | pc |
| 21 | Air cooling device | FL 1.45/4.22 (по бирке) | set |
| 22 | Rotator motor | 2K-305 (604-0127) | pc |
| 23 | O-ring | 2-341 | pc |
| 24 | O-ring | 2-335/8-332 | pc |
| 25 | Parbak clamping ring | 8-335 | pc |
| 26 | O-ring | 2-332 | pc |
| 27 | Parbak clamping ring | 8-332 | pc |
| 28 | Винт | GB/T70.1 | pc |
| 29 | Винт | GB/T70.1 | pc |
| 30 | Holding key body | DQ004.01.20 | pc |
| 31 | Dies | DQ004.01.18.00 | pc |
| 32 | Manual Internal BOP | DQ001.02.02 | pc |
| 33 | Automatic Internal BOP | DQ004.02.10.00 | pc |
| 34 | Mounting support | DQ004.02.03 | pc |
| 35 | Guide rod | DQ018.02.03.02 | pc |
| 36 | Roller support | DQ004.02.03.03LS | pc |
| 37 | Roller | CF24 BR | pc |
| 38 | Stainless steel pipe | GB/T 14976 | pc |
| 39 | Three way adapter | AC-16-22-16RN | pc |
| 40 | Piston pump | A10V028DR/31R- PSC12K01 | pc |
| 41 | SAE clamping flange | FL-12 | pc |
| 42 | SAE clamping flange | FL-20 | pc |
| 43 | Explosion Proof Solenoid Valve | DHA-0631/2/РА-М/7 24DC | pc |
| 44 | Explosion Proof Solenoid Valve | DHA-0631/2/А/РА-М/7 24DC | pc |
| 45 | Explosion Proof Solenoid Valve | DHA-0713/РА-М/7 24DC | pc |
| 46 | Nitrogen filling screw | CQJ-D-H | pc |
| 47 | High pressure hose | HFH2-P1-3-P-1 | pc |
| 48 | Pressure gauge | YN-63-III 0-25 МРа | pc |
| 49 | Oil Suction Filter | TF100x100L | pc |
| 50 | Filter | SP-10×25 | pc |
| 51 | Hose assembly | 16II-660J26C1- F12C9 | pc |
| 52 | Cooling device assembled with electric motors | YJ13.500.000L | set |
| 53 | Cooling device assembled with electric motors | YJ13.500.000 | set |
Field Failure Repair Case Studies
Case 1: DQ450 TDS Rotary Seal Mud Leakage
A drilling rig’s DBZ DQ450 top drive experienced severe mud leakage from worn OR-type rotary seals, causing lubricant contamination. Installing OEM OR 3200 033 00161F rotary seals eliminated leakage, protected internal bearings, and resumed normal mud circulation.
Case 2: Hydraulic Solenoid Valve Failure
The top drive’s hydraulic actuation system malfunctioned due to a faulty explosion-proof solenoid valve (DHA-0631/2), halting top drive rotation. Replacing the OEM solenoid valve restored hydraulic control, fixed actuation issues, and got the top drive back online.
Case 3: Roller Bearing Wear & Vibration
Excessive top drive vibration and noise occurred due to worn NU1038M/C4 roller bearings from inadequate lubrication. Swapping in OEM roller bearings and performing a full lubrication service eliminated vibration, stabilized rotation, and prevented further assembly damage.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts compatible only with DBZ DQ450 TDS top drives? | Yes, this parts list is engineered exclusively for the DBZ DQ450 Top Drive System, matching OEM part numbers and API 7K specs for perfect drop-in fitment. |
| Do these hydraulic components meet 25MPa pressure ratings? | Absolutely, all hydraulic parts (pumps, valves, hoses) are rated for 25MPa continuous pressure, matching the DQ450 TDS hydraulic system requirements. |
| Can these parts be used for emergency top drive repairs? | Yes, these OEM-grade spares are designed for quick field replacement, making them ideal for emergency repairs to minimize costly rig downtime. |
Procurement Guidance & Closing Value Statement
This DBZ DQ450 TDS spare parts catalog serves as both a formal procurement benchmark and a technical troubleshooting reference, designed to eliminate the risks of substandard aftermarket parts, reduce long-term maintenance expenses, and uphold the safety and operational reliability of your top drive system. Every part is a verified OEM-certified component that guarantees perfect fitment, consistent heavy-load performance, and compliance with API 7K/API 8C and DBZ quality standards, making it the definitive resource for maintaining DBZ DQ450 top drives.
Whether you need to replace worn seals, faulty bearings, damaged hydraulic components, malfunctioning BOP units, or degraded cooling parts to restore your top drive functionality, or stock critical OEM spares for routine maintenance and unforeseen breakdowns, this catalog provides the exact part numbers, quantities, and specifications your drilling operation demands. Secure your supply of authentic DBZ DQ450 TDS spare parts today to protect your rig investment, maintain uninterrupted drilling operations, and keep your top drive running safely and efficiently in the field.
