Robust, high-capacity spur and helical gears forged from high-alloy steels (18CrNiMo7-6, 42CrMo) with deep case hardening and ground teeth for extreme mining and drilling duty.
Review the gear pair, assembly conditions, drawing requirements, specification checks, and inspection points before requesting a quotation.
Mining and oilfield extraction equipment operates in severe environments characterized by heavy shock loads, abrasive dust, continuous duty, and remote operating locations where downtime is intolerable. ZhongYi manufactures custom heavy-duty gears, pinions, and bull gear rims for oilfield drilling mud pumps, fracturing pumps, rotary drilling tables, mining jaw and cone crushers, ball mills, and heavy-duty winches. We utilize high-integrity alloy steel forgings (such as 18CrNiMo7-6 and 20CrNi2Mo), deep carburizing with case depths exceeding 2.0 mm, and CNC gear tooth grinding to deliver exceptional bending strength, high surface durability, and reliable power transmission.
How to specify a mining & oilfield machinery heavy-duty gears for quotation.
Use application and mating-component data to confirm geometry, materials, mounting details, and the acceptance plan.
RFQ requirements for mining and oilfield gears should include module/DP, tooth count, helix hand/angle, face width, center distance, transmitted horsepower/torque, shock factor, duty cycle, lubrication method, and mounting dimensions. If replacing a worn gear from an existing mud pump or crusher, providing the machine model number or drawing revision accelerates technical review.
Technical specifications
Core technical parameters for engineering and procurement review.
Overseas procurement teams require verifiable technical data, not unsupported claims. Every production batch at ZhongYi is inspected against approved CAD blueprints and international standards (DIN, AGMA, ISO).
Component-Specific Quality Focus:
Gear tooth breakage in oilfield mud pumps or mining crushers halts entire operations. ZhongYi ensures heavy-duty gears have deep, uniform case hardening backed by exceptionally ductile, high-strength core structures (tensile strength > 1,100 MPa), preventing tooth root shear even under severe jam-ups.
Coordinate Metrology
Zeiss / Hexagon 3D CMM
Validates 3D spatial GD&T, bore concentricity, center distance, and geometric tolerances down to ยฑ0.002 mm.
Tooth Geometry Analysis
Klingelnberg CNC Gear Analyzer
Inspects involute tooth profile error (fฮฑ), lead crowning (fฮฒ), pitch cumulative error (Fp), and radial runout (Fr).
Hardness & Case Depth
Digital Micro-Vickers & Rockwell Testers
Verifies surface hardness (58โ62 HRC), core toughness, and effective carburized / nitrided case depth gradient.
Chemical Metallurgy
Direct-Reading Optical Spectrometer
100% chemical composition verification of alloy steel forgings (20CrMnTi, 42CrMo, 18CrNiMo7-6, Stainless, POM).
Inspection Deliverables with Every Shipment
Complete Batch Traceability & Certified Test Reports
EN 10204 Type 3.1 Mill Test Certificate (Chemical & Mechanical Properties)
Zeiss 3D CMM Full Dimensional Inspection Sheet
Klingelnberg Tooth Profile & Lead Crowning Graph Report
Effective Carburized Case Depth & Hardness Curve Data
We maintain strict incoming material spectroscopy, in-process CNC tooth coordinate monitoring, and 100% final pre-shipment dimensional inspection. All custom gear batches are backed by our full manufacturing warranty.
High-torque, impact-resistant gears, girth rings, and planetary drive sets engineered for excavators, cranes, drilling rigs, and heavy mining crushers.
Common questions before ordering mining & oilfield machinery heavy-duty gears products.
Critical specifications are confirmed against final drawings before production.
Can ZhongYi supply replacement gears for standard oilfield mud pumps?โผ
Yes, we manufacture high-precision replacement bull gears and pinion shafts compatible with common oilfield mud pump models, ensuring direct interchangeability and equal or superior fatigue life.
How do you prevent tooth root cracking under severe shock loads?โผ
We combine clean vacuum-degassed alloy steel forgings, generous tooth root transition radii, deep carburized case depth, and controlled shot peening to induce compressive residual stresses in the root fillet.
What material certifications are provided with oilfield gears?โผ
Every order includes complete EN 10204 Type 3.1 material test reports (MTR), ultrasonic inspection reports, heat treatment furnace charts, hardness test records, and CMM dimensional certificates.
24-Hour Engineering Quote & DFM Review
Upload Your Drawings for Mining & Oilfield Machinery Heavy-Duty Gears Manufacturing
Send your 2D blueprints or 3D CAD models. Our senior gear engineering team will review tooth geometry, module/pitch, materials, heat treatment feasibility, and provide transparent factory pricing within 24 hours.
Supported CAD Blueprint & Drawing Formats:
STEP (.step / .stp) AutoCAD (.dwg / .dxf) IGES (.igs) SolidWorks / 3D CAD PDF Technical Blueprints Worn Physical Samples
Mutual NDA Protection
We sign strict Non-Disclosure Agreements to safeguard proprietary designs.
< 24h DFM Feedback
Rapid manufacturability review, tolerance checks, and unit quotation.
Direct Factory Engineering
Direct technical communication with senior master gear artisans.
