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+86 123 456 7890
Bull Gear
Our mud pump bull gear is a critical power-end transmission component designed for heavy-duty oilfield drilling environments. Manufactured through integral forging and precision CNC machining, this gear delivers stable torque transmission, excellent structural toughness, and strong fatigue resistance under continuous high-pressure and cyclic load conditions. Adopting advanced heat treatment technology and strict quality control procedures, every finished gear exceeds standard API requirements, ensuring consistent and reliable performance in long-term drilling operations. Available in full sizes and complete specifications with ready stock support, the gear also supports personalized customization to match different equipment parameters and special working conditions.
Core Advantages
Material OptionsFH Petroleum supplies mud pump bull gears in different material and manufacturing configurations according to confirmed application requirements. AISI 4135 / 35CrMo alloy steel is available for special working conditions. For high-power and high-pressure mud pumps, forged 42CrMo steel can be used where higher strength is required. For medium- and lower-power pumps, ZG42CrMo cast steel is available as a cost-effective option suitable for large-size gear blanks. |
API-Exceeding Precision ManufacturingBull gears are produced through precision machining and controlled manufacturing processes to achieve accurate tooth profiles and stable transmission performance. API-exceeding manufacturing requirements are available for applications requiring higher dimensional and quality-control standards. World-class heat treatment is available for applicable alloy-steel configurations. |
Dual Machining ProcessesBull gears can be manufactured using gear grinding or gear hobbing according to application requirements. Precision-ground gear versions can achieve HRC 55–60 tooth-surface hardness. Carburizing is available for applications requiring enhanced surface hardness and wear resistance. |
High-Pressure Mud Pump ApplicationsBull gears can be supplied for mud pump applications up to 7500 PSI where confirmed pump design and operating requirements support this configuration. Gear specifications are selected according to the required transmission load and operating conditions. |
Interchangeability & Replacement SupportReplacement bull gears can be manufactured according to confirmed pump models, part numbers, technical drawings, dimensions, or approved samples. Dimensional accuracy and mating requirements are controlled to support installation and reliable power-end operation. |
Stock Availability & Custom ManufacturingFH Petroleum supports commonly required bull gear specifications and replacement applications, with custom manufacturing available according to confirmed drawings, dimensions, tooth configurations, materials, and technical requirements. |
Installed Bull GearBull gear installed in a mud pump power-end assembly. |
Batch ProductionMultiple mud pump bull gears prepared in the manufacturing facility. |
Finished Helical Gear TeethFinished helical gear teeth on a mud pump bull gear. |
Manufacturing WorkshopMud pump bull gears arranged in the manufacturing workshop. |
AISI 4135 / 35CrMo Alloy SteelConfirmed alloy-steel material option for applications requiring higher strength and durability. Precision machining and applicable heat-treatment processes can be provided according to confirmed technical requirements. |
ZG42CrMo Cast SteelCast-steel bull gear option suitable for medium- and lower-power mud pump applications. This configuration offers a cost-effective solution for large-size gear blanks. |
Forged 42CrMo SteelForged-steel option for high-power and high-pressure mud pump applications where higher strength is required. Manufacturing processes are carried out according to confirmed application and drawing requirements. Confirmed process: Quenched and tempered + Tooth-surface hardening |
Compatible Mud Pump Models
|
Brand |
Compatible Models |
|
BOMCO |
F-500, F-800, F-1000, F1300, F1600, FB-1300, FB-1600, D-375, D-700 |
|
LANSHI |
3NB-1300C, 3NB-1000, 3NB-1000C, 3NB-800 |
|
QINGZHOU |
SL3NB-1300A, QZ-1000, QZ-500, QZ-350, QZ-800, SL3NB-1600 |
|
HONGHUA |
3NB-1600F, HHF800/1000, HHF1300/1600, HHF1600HL, HHF2200HL |
|
DRILLMEC |
7TS450, 7TS600, 9T800, 9T1000, 10T1300, 12T1600 |
|
EMSCO |
F-500, F-800, F-1000, F1300, F1600, FB-1300, FB-1600, FC-1600, FC-2200 |
|
IDECO |
T-500, T-800, T-1000, T-1300, T-1600 |
|
GARDNER DENVER |
PZ-7, PZ-8, PZ-9, PZ-10, PZ-11 |
|
NATIONAL |
7-P-50, 8-P-80, 9-P-100, 10-P-130, 12-P-160, 14-P-200, 14-P-220, K-700, K-700A, K-500, K-500A |
|
OILWELL |
A-350PT, A-560PT, A-600PT, A-850PT, A-1100P, A-1400PT, A-1700PT |
|
ELLIS WILLIAMS |
W-440-LP, E-447, E-2200, W446, W440 |
|
RUSSIAN Series |
8T-650, UNBT-600, UNBT-950, UNBT-1180L, UNBT-950A, UBT-400, BT-600, UB-590, UNB-600, 8T-310 |
Applications
Offshore Drilling Mud Pump Replacement Parts
Corrosion-resistant power end and fluid end parts built for harsh marine conditions, fully interchangeable with mainstream F-series triplex mud pumps and designed for extended runtime between maintenance.
Deep Well Onshore Drilling Pump Components
Heavy-duty pump parts rated for high-pressure deep drilling operations, including forged crankshafts, crossheads and fluid end modules, delivering consistent performance under continuous heavy load per API standards.
Workover & Land Drilling Aftermarket Pump Parts
Cost-effective OEM-compatible spare parts for routine onshore drilling and workover projects, covering common wear parts of power end, fluid end and structural assemblies to cut maintenance costs.
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