ZhongYi Gear Manufacturer (a member of ZhongYi Machinery)
Engineered for excavators, rotary drilling rigs, mining crushers, concrete mixers, and heavy haulers. ZhongYi manufactures custom case-hardened, precision ground gears in 20CrMnTi, 42CrMo, and 18CrNiMo7-6 to withstand severe abrasive dust, cyclic fatigue, and sudden impact shocks.
Customization
100% to Drawing
Precision Standard
DIN 4-7 / AGMA 11-13
Fast Quote Turnaround
< 24 Hours DFM
Quality Certified
ISO 9001:2015
Engineering & Manufacturing Capability
We bridge the gap between engineering blueprints and reliable transmission performance. Whether you need prototype development, replacement parts, or volume OEM manufacturing, our technical team provides complete DFM optimization and precision machining.
How ZhongYi addresses the root causes of premature gear failure, excessive backlash, and operational wear in the field:
Heavy digging resistance, rock impacts, and sudden machine reversals induce massive cyclic bending moments on gear teeth. Gears require exceptional core toughness combined with high surface hardness (58–62 HRC) to prevent tooth fracture.
Operation in thick mud, abrasive rock dust, slurry, and extreme ambient temperatures (-30°C to +80°C) accelerates tooth surface scuffing and abrasive wear if case depth and surface micro-finish are inadequate.
Continuous heavy duty cycles lead to micro-pitting and sub-surface shear fatigue. Precision gear tooth crowning, controlled carburized case depth (1.2–2.5 mm), and CNC grinding are vital to sustain long fatigue life.
Unplanned downtime for mining excavators or concrete plants costs thousands of dollars per hour. OEM buyers and fleet rebuilders require guaranteed dimensional interchangeability and long maintenance intervals.
100% to Drawing
Custom manufacturing according to client 2D drawings (DWG/PDF) or 3D CAD models with rapid DFM analysis.
M4.0 to M25+ (DP 6 to DP 1)
Equipped with heavy-duty CNC hobbers and large vertical gear shapers for high-module industrial transmission components.
DIN 5 - DIN 7 / AGMA 11-13
CNC Reishauer and Gleason profile grinding achieving tight pitch accuracy, minimal runout, and optimized tooth lead crowning.
Carburized 58-62 HRC (1.2-2.5mm)
Controlled multi-purpose atmosphere carburizing furnaces for deep effective case depth and tough martensitic core structure.
Upload any standard 2D blueprint or 3D CAD model. Our gear engineering team provides a detailed DFM report within 24 hours.
Core Industry Products
We produce high-reliability, custom-machined gears specifically engineered to match your torque, speed, mounting envelope, and environmental durability requirements.
High-torque helical gear sets engineered for heavy concrete mixers, crane hoists, and mining speed reducers.
Rugged spur gears built for excavator track drives, crushing plants, and heavy material handling conveyors.
High-capacity internal ring gears and swing drive girth gears for excavator turrets, mobile cranes, and ball mills.
Multi-stage planetary gear assemblies for concrete mixer drum drives, road headers, and winch gearboxes.
Looking for a specialized tooth profile or custom gear pairing? We manufacture non-standard module sizes, modified pressure angles (14.5°, 20°, 25°), and custom backlash specifications according to your exact CAD models.
Quality Control & Inspection Matrix
Overseas machinery buyers cannot afford supplier quality defects. At ZhongYi, every gear batch passes rigorous metallurgical, dimensional, and tooth profile testing using world-class metrology instruments before dispatch.
Zeiss Coordinate Measuring Machine
Comprehensive 3D spatial dimensions, concentricity, bore tolerances, and geometric GD&T validation.
P40 Gear Testing Analyzer
Verifies involute profile deviation (Fα), lead crowning (Fβ), pitch cumulative error (Fp), and radial runout (Fr).
HV-50 / HRC Hardness Gauge
Validates surface hardness (58-62 HRC), core toughness (30-40 HRC), and effective carburized case depth gradient.
Direct-Reading Metal Analyzer
100% chemical composition verification for raw alloy steel forgings (20CrMnTi, 42CrMo, 18CrNiMo7-6).
Zero-Risk Guarantee: 100% replacement or refund warranty against manufacturing defects.
Proven Real-World OEM Success
See how our metallurgical expertise, gear geometry optimization, and precision CNC grinding solve high-stakes transmission challenges for global machinery manufacturers.
North American Tier-1 Heavy Construction Equipment Manufacturer (Company A)
+30% Lifespan
Validated in Heavy Rock Excavator Field Tests
The customer experienced premature tooth root fatigue cracking and flank pitting on excavator swing drive pinion shafts during heavy rock excavation, limiting service life to under 3,500 operating hours.
ZhongYi engineering team upgraded raw steel to vacuum-degassed 20CrMnTi forgings, optimized tooth root trochoid fillets with tailored lead crowning to eliminate edge loading, and applied controlled deep carburizing (case depth 1.6–1.8 mm, 59–62 HRC) followed by Reishauer CNC grinding to DIN 5 accuracy.
Extended working lifespan by 30%+ in field validation tests (surpassed 5,500 operating hours)
Zero tooth chipping or micro-pitting under 2.5x dynamic overload conditions
Reduced operational mesh noise by 4.2 dB(A)
Delivered 100% batch-to-batch interchangeability for global OEM assembly lines
Technical FAQ
Clear answers to common engineering, metallurgical, tolerance, and procurement questions for international OEM machinery buyers.
For high-impact, high-torque applications such as excavator swing drives and mixer planetary reducers, we recommend 20CrMnTi or 18CrNiMo7-6 alloy steel with gas carburizing and quenching (58–62 HRC surface, 32–40 HRC core, effective case depth 1.2–2.5 mm). For large girth rings, 42CrMo forged alloy with quenching & tempering plus tooth induction hardening (50–55 HRC) provides superior fatigue strength.
Yes. We specialize in custom OEM manufacturing based on customer 2D drawings (PDF/DWG) or 3D CAD files (STEP/STP/IGES). We can also reverse-engineer worn sample parts, providing CMM tooth coordinate analysis, material spectroscopy, and DFM optimization before production.
We enforce strict multi-stage quality control: 100% Ultrasonic Testing (UT) on raw forgings, controlled quenching media to prevent thermal distortion, 100% Magnetic Particle Inspection (MPI) to detect sub-surface micro-cracks, and full Klingelnberg gear analyzer reports for tooth lead and profile geometry.
Rapid DFM reviews and engineering quotations are provided within 24 hours. Prototype samples are completed in 15–25 days (including tooling and heat treatment). Serial OEM batch production typically takes 30–45 days depending on module size, forging availability, and grinding requirements.
Low-backlash, ultra-precise fine-pitch gears, ground helical racks, and planetary gearheads for robotics, AGV wheel drives, and high-speed motion axes.
High-torque bevel gears, spur gears, and splined drive shafts for tractors, harvesters, rotary tillers, and agricultural PTO gearboxes.
Ultra-quiet, contamination-free micro gears in medical-grade POM, PEEK, and stainless steel for surgical robotics, infusion pumps, and clinical lab equipment.
Heavy-torque yaw/pitch gears, slewing ring drives, and precision worm drives engineered for 20-year service life in wind turbines and solar tracking fields.
Send your 2D blueprints or 3D CAD files for Construction & Mining Machinery Gear Solutions. Our senior gear engineers provide detailed manufacturability feedback, material optimization, and factory-direct pricing.
