Product Introduction
This complete parts collection covers all core components of the Honghua HHF 800 mud pump general frame system (NB800M.00), including the main frame assembly (NB800M.01.00), full power end and fluid end sub-assemblies, skid base, sealing gaskets/pads, high-strength ANSI/ASME standard bolts, nuts, washers, and auxiliary functional components such as breather caps, oil level gauges, clean out covers, draining filter assemblies, pulsation dampeners (KB-45), shear pin relief valves (JA-3), pressure gauges, and special assembly tools. Unlike standalone component parts, this general frame parts list covers every element needed for full pump assembly, routine maintenance, partial repair, and complete overhaul, eliminating the hassle of mismatched parts and incomplete procurement. Each part is produced with consistent OEM specifications, requiring no on-site modification or secondary processing, making it the ideal choice for maintaining, repairing, or refurbishing the Honghua HHF 800 mud pump.
Core Functional Specifications
All components are engineered to support the stable, high-efficiency operation of the HHF 800 mud pump, with key performance parameters fully aligned with industrial drilling requirements:
- Structural Load-Bearing: The main frame (NB800M.01.01.00) adopts high-strength welded alloy steel construction, with a maximum dynamic load capacity of 85 tons, resisting deformation under continuous high-vibration operation.
- Pressure Control & Safety: The KB-45 pulsation dampener stabilizes mud discharge pressure fluctuations within ±5%, while the JA-3 shear pin relief valve provides overpressure protection at the rated 40MPa (5800psi) threshold, preventing pump damage from sudden pressure spikes.
- Sealing Performance: All sealing gaskets, pads and ring gaskets feature oil-resistant, wear-resistant rubber composite materials, maintaining a leak-proof seal at operating temperatures from -22°F to 194°F, with a service life of 3,500+ operating hours.
- Fastener Stability: ANSI/ASME standard high-strength bolts and matching nuts feature locking design, resisting loosening under extreme vibration, with a torque retention rate of over 95% after 1,000+ hours of continuous operation.
- Auxiliary System Function: The power end lubrication assembly ensures full oil circulation for internal bearings and gears; the draining filter assembly filters out impurities above 50μm, keeping lubricating oil clean and extending component life.
Maintenance & Service Recommendations
To maximize the service life of the HHF 800 mud pump general frame assembly and avoid unexpected failures, follow these field-proven maintenance protocols compliant with API 7K standards:
- Daily Inspection: Check for oil/mud leaks at sealing joints; inspect the general frame for visible deformation or cracks; monitor pressure gauge readings and confirm normal operation of the pulsation dampener and relief valve.
- Weekly Maintenance: Tighten all high-strength bolts to rated torque; clean the draining filter assembly to remove impurities; check oil level via the oil level gauge and top up lubricating oil if needed.
- Monthly Maintenance: Replace damaged sealing gaskets and pads; inspect the breather cap for blockage; clean clean out covers and check internal lubrication system pipelines for blockages.
- Quarterly Maintenance: Conduct full torque inspection of all frame fasteners; check the main frame for fatigue damage; test the functionality of the shear pin relief valve and replace worn shear pins; replace clogged filter elements.
- Long-Term Storage: Coat exposed metal components with anti-rust oil; seal all pipe openings; store in a dry, ventilated environment to prevent corrosion and deformation.
- We supply the following spare parts:
| — | NB800M.00 HHF-800 General drawing of drilling pump” | 2 |
| 二 | Parts drawings of drilling pump | 6 |
| 1 | NB800M.01.00 Frame assembly | 6 |
| 2 | NB800M.02.00 Crankshaft assembly | 8 |
| 3 | NB800M.03.00 Pinion shaft assembly | 10 |
| 4 | NB800M.04.00 Crosshead assembly | 12 |
| 5 | NB800M.05.00 Fluid end assembly | 14 |
| 6 | NB800M.06.00 Power end lubrication assembly | 17 |
| 7 | NB800M.08.00 Spray pump assembly | 20 |
| 8 | NB800M.10.00 Breather cap | 22 |
| 9 | NB800M.15.00 Oil level gauge | 23 |
| 10 | NB800M.19.00 Clean out cover | 24 |
| 11 | NB800M.22.00 Draining filter assembly | 25 |
| 12 | NB800M.24.00 Elbow assembly | 26 |
| 13 | NB800M.24.00A Discharge five-way pipe | 27 |
| 14 | NB800M.27.00 KB-45Pulsation damper | 29 |
| 15 | NB800M.28.00 JA-3Shear pin Relieve valve | 31 |
| 一、NB800M.00 HHF-800 General drawing of drilling pump | ||
| S.N | Drawing No. | Item |
| 1 | NB800M.01.00 | Frame assembly |
| 2 | NB800M.02.00 | Crankshaft assembly |
| 3 | NB800M.03.00 | Pinion shaft assembly |
| 4 | NB800M.04.00 | Crosshead assembly |
| 5 | NB800M.05.00 | Fluid end assembly |
| 6 | ANSI/ASMEB 18.6.3-2003 | Screw: 8 (0.164) -32×1/2 |
| 7 | NB800M.06.00 | Power end lubrication assembly |
| 8 | NB800M.07.00 | Skid |
| 9 | NB800M.08.00 | spray pump assembly |
| 10 | NB800M.09 | Seal gasket |
| 11 | NB800M. 10.00 | Breather cap |
| 12 | NB800M.11 | Nameplate |
| 13 | NB800M.12.00 | Cover plate assembly |
| 14 | ANSI/ASMEB 18.2.1-1996 | Bolt: 1/2-13×1 1/4 |
| 15 | GB/T95-2002 | Washer: 14 |
| 16 | NB800M.13 | Seal pad |
| 17 | NB800M.14 | Indication plate |
| 18 | NB800M.15.00 | Oil level gauge |
| 19 | NB800M.16 | Adjusting gasket |
| 20 | ANSI/ASMEB 18.2.1-1996 | Bolt: 1-8×3 1/8 |
| 21 | GB/T93-1987 | Washer: 27 |
| 22 | ANSI/ASMEB 18.2.2-1987 (R1999) | Nut: 1-8 |
| 23 | NB800M.17 | Cover, crosshead hole |
| 24 | NB800M.18 | Seal pad |
| 25 | ANSI/ASMEB 18.2.1-1996 | Bolt: 1/2-13×1 3/8 |
| 26 | NB800M.19.00 | Clean out cover |
| 27 | NB800M.20 | Seal gasket |
| 28 | ANSI/ASMEB 18.2.1-1996 | Bolt: 5/8-11×2 |
| 29 | GB/T95-2002 | Washer: 16 |
| 30 | ANSI/ASMEB 18.2.2-1987 (R1999) | Nut: 5/8-11 |
| 31 | NB800M.21 | Screw plug: Rz1 1/2 |
| 32 | NB800M.22.00 | Draining filter assembly |
| 33 | NB800M.23 | Ring gasket: R44 |
| 34 | NB800M.24.00 | Elbow assembly |
| 35 | NB800M.24.00A | Discharge five-way pipe assembly |
| 36 | NB800M.25.00 | Special tools |
| 37 | NB800M.26 | Flange: 5 1/8*35 |
| 38 | NB800M.27.00 | KB-45 Pulsation dampener |
| 39 | NB800M.28.00 | JA-3 Shear pin relieve valve |
| 40 | NB800M.29.00 | Spare parts delivered with pump |
| 41 | NB800M.30.00 | Cover plates assembly |
| 42 | GB/T827-1986 | Rivet: 3*10 |
| 43 | YK-150 | Dual scale shock-proof pressure gauge: |
| 0~40MPa (0~5800psi) | ||
| 44 | Rubber: 30*10*4880 | |
| 45 | NB800M.31 | Blind flange: 5 1/8*35 |
| 二、Parts drawings of drilling pump | ||
| S.N | Drawing No. | Item |
| 1 | NB800M.01.01.00 | Frame |
| 2 | NB800M.01.02 | Main bearing cover |
| 3 | NB800M.01.03 | Shim set |
| 4 | NB800M.01.04 | Connector: NPT3/4-NPT3/4 |
| 5 | NB800M.01.05 | Screw plug: NPT3/4 |
On-Site Fault Repair Case Studies
Case 1: Frame Fastener Loosening Causing Severe Vibration & Oil Leak
A land deep-well drilling rig’s HHF 800 mud pump suffered excessive vibration and oil leakage at the main bearing cover. On-site inspection found that multiple 1/2-13 frame connecting bolts had loosened due to long-term high-vibration operation, causing misalignment of sealing surfaces. Technicians tightened all frame fasteners to standard torque, replaced the damaged seal gasket, and added thread locking compound. The vibration was eliminated, leaks were resolved, and the pump resumed normal operation within 2 hours.
Case 2: Clogged Draining Filter Assembly Leading to Lubrication Failure
An offshore drilling platform’s HHF 800 pump experienced insufficient lubrication pressure, triggering an equipment alarm. Investigation revealed the draining filter assembly (NB800M.22.00) was completely clogged by mud and metal impurities, blocking oil circulation. The maintenance team replaced the draining filter assembly, flushed the internal lubrication pipeline, and replaced the lubricating oil, restoring normal lubrication pressure and avoiding bearing burnout.
Case 3: Failed Shear Pin Relief Valve Causing Overpressure Risk
A horizontal directional drilling site’s HHF 800 mud pump showed abnormal discharge pressure, with a risk of overpressure damage. Inspection found the JA-3 shear pin relief valve (NB800M.28.00) had a worn shear pin that failed to activate under high pressure. Workers replaced the shear pin relief valve assembly, calibrated the pressure threshold, and installed a new shock-proof pressure gauge, eliminating overpressure safety risks and restoring normal mud discharge.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these parts fully compatible with the standard Honghua HHF 800 mud pump NB800M.00 general frame? | Yes, all parts are manufactured strictly to Honghua OEM original drawings and dimensional specifications, fully matching the NB800M.00 general frame and all supporting sub-assemblies of the HHF 800 mud pump, with no on-site modification required for installation. |
| What is the pressure rating of the KB-45 pulsation dampener and JA-3 relief valve? | The KB-45 pulsation dampener and JA-3 shear pin relief valve are both rated for 0-40MPa (0-5800psi), fully matching the working pressure range of the Honghua HHF 800 mud pump, providing stable pressure stabilization and overpressure protection. |
| Can these general frame parts be used for both onshore and offshore HHF 800 pumps? | Absolutely. These parts feature anti-corrosion and shock-resistant design, complying with both onshore and offshore drilling equipment standards. They adapt to salt-spray, high-humidity offshore environments and dust-prone onshore rig conditions equally well. |
Procurement Guidance
This Honghua HHF 800 mud pump general frame (NB800M.00) full parts list is the ultimate one-stop reference for equipment managers, maintenance teams, and drilling contractors seeking reliable, OEM-compatible components. As the foundational structural system of the entire mud pump, using high-standard, dimensionally accurate general frame parts is the most effective way to reduce long-term maintenance costs, avoid unplanned shutdowns, and ensure continuous and stable drilling operation.
