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Carburizing, Quenching, and Tempering - Surface Hardness HRC58-62
Gear Accuracy
ISO 6-7
Noise Level
≤ 65 dB (at high speed)
Tooth Profile Type
Spiral / Hypoid Design
Brand Name
DINGSCO
Model Number
SJ, DH
Certification
ISO9001
Place of Origin
Changsha, China
Power Grinding 20CrMnTi Industrial Gear Set with ISO 6-7 Accuracy Grade Drive Components
Dingsco Gear is a specialized R&D and manufacturing facility dedicated to the design, development, production, and sales of high-quality fine-pitch spiral bevel gears, high-reduction hypoid gears, and cylindrical gears. The company possesses robust R&D capabilities and is equipped with a comprehensive suite of advanced machinery—including multiple 6-axis, 5-axis simultaneous-control CNC spiral bevel gear grinding and milling machines.
Material Characteristics
Mechanical properties: Tensile strength ≥1080MPa, yield strength ≥835MPa, impact energy ≥55J. After carburizing and quenching, surface hardness reaches HRC58-62 and core hardness HRC30-45.
Core advantages: Ti refines grains and inhibits grain growth during high-temperature carburizing, enabling direct quenching after carburizing with minimal distortion; Cr and Mn improve hardenability, ensuring core strength for large cross-sections.
Technical Principles
Transmission mechanism: Spiral bevel gears (Gleason/Klingelnberg system) inside the power turret realize 90° orthogonal drive, with vertical arrangement of input and output shafts, transmitting torque through tooth surface meshing to drive the tool rotation.
Working condition adaptability: Tooth profile is optimized for modification, high contact ratio and smooth meshing, capable of withstanding high-speed rotation and heavy cutting loads, suitable for turn-mill, drilling, tapping and other composite machining.
Manufacturing Process
Forging:Heated to 1150-1200℃, forged into gear blank to refine grains.
Normalizing:Insulated at 880-920℃ and air-cooled to uniform structure and improve machinability.
Carburizing:Insulated in carbon-rich atmosphere at 920-930℃ for 4-10 hours, surface carbon content increases to 0.8%-1.2%.
Quenching:Oil-cooled at 820-850℃ to form high-hardness martensite structure.
Low-temperature Tempering:Insulated at 160-200℃ for 1.5-2 hours to eliminate stress and stabilize structure.
Finishing:Hobbing or grinding to ensure tooth profile accuracy (usually ≥IT6) and surface roughness (Ra≤0.8μm).
Inspection:Full inspection of hardness, pitch, tooth lead, contact pattern, etc., for assembly after qualification.
Carburizing, Quenching, and Tempering - Surface Hardness HRC58-62
Gear Accuracy
ISO 6-7
Noise Level
≤ 65 dB (at high speed)
Tooth Profile Type
Spiral / Hypoid Design
Selection & Maintenance Tips
Selection: Preferred for medium-heavy load and impact load transmission scenarios, avoid low-speed light load conditions (high cost).
Maintenance: Regularly apply special grease, check tooth surface wear and meshing clearance, replace worn gears in time to extend equipment life.
Why Choose us?
7-axis CNC Grinding: Tolerances as tight as ±5μm for quiet, durable operation.
Strong technical expertise: Doctoral and master’s professionals in spiral bevel gear technology.
Custom Design: Solutions for high-reduction, high-speed, heavy-load, and low-noise and less teeth for users
Rigorous Testing: 100% inspection via Gleason metrology systems.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1994
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha... Our company was formerly known as Changsha Double Star Gear Industrial Co., Ltd, which was established in 1994. It is a directly affiliated university-run enterprise founded by Central South University Professor Zeng Tao, the leading expert on spiral bevel gears in China. It was later renamed as Cha...
