Totem Heavy Gearbox High Quality Forged Steel Large Module Spiral Bevel Gear

• Customization: Available
• Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Agricultural Machinery, Car
• Hardness: Soft Tooth Surface
• Model NO.: large
• Gear Position: Internal Gear
• Manufacturing Method: Cast Gear
• Toothed Portion Shape: Spur Gear
• Material: Stainless Steel
• Type: Circular Gear
• Stiffness & Flexibility: Forging
• Shaft Shape: Customized
• Outer Diameter: Min. 750mm
• Certificate: ISO
• Gear Accuracy: Grade 7 to 8 After Grinding
• Gear Teeth: Grinding
• Surface Hardness: HRC 50-55
• Defect Control: Ut, Mt
• Transport Package: Export Package (Wooden Box, Steel Frame etc. )
• Specification: 0.8-10M
• Trademark: TOTEM/OEM
• Origin: China
• HS Code: 8483409000
• Production Capacity: 100 T/Y
• Package Size: 60.00cm * 60.00cm * 30.00cm
• Package Gross Weight: 60.000kg

Product Description

Product Description

Totem Heavy Gearbox High Quality Forged Steel Large Module Spiral Bevel Gear

These precision-forged spiral bevel gears are engineered for heavy-duty gearbox applications, offering exceptional load capacity and long service life. Manufactured from high-grade alloy steel through closed-die forging, they feature optimized tooth profiles for smooth, high-torque transmission. Ideal for mining, marine, and heavy industrial machinery, these gears undergo rigorous heat treatment and finish grinding to ensure DIN Class 5 accuracy.

Finished Product Image

Specification

Applications

1.Mining:Ball mill drives,Shock load resistance (2000 kN·m)
2.Marine:Ship propulsion gearboxes,Salt spray corrosion resistance
3.Steel Mills:Rolling mill reducers,Thermal distortion compensation
4.Wind Energy:Yaw/pitch systems,-40°C low-temperature certification

Core Parameters 
Module Range:8-40 (customizable)    
Material:18CrNiMo7-6 / 42CrMoA 
Hardness: HRC 58-62 (case) / HRC 32-36 (core) 
Accuracy Grade:DIN 3965 Class 5 (ground)
Max. Torque Capacity:2000 kN·m (dynamic)    

Machinery Processing

Manufacturing Process

 Material Forging
10,000-ton hydraulic press (ASTM grain size 7-8)
Rough Machining
CNC turning & drilling (pre-heat treatment)
Heat Treatment
Carburizing (case depth 3.5-5mm) + tempering
Finish Grinding
Klingelnberg gear grinder (Ra ≤0.4μm)
Quality Inspection
3D tooth profile scan (≤0.02mm error)

Ultrasonic testing (EN 10228-3 Class B)

Heat Treatment Process Flow

Grinding Process Flow

Gas Carburizing
Atmosphere: Endothermic gas (20% CO, 40% H, balance N)
Duration: 6-12 hours (depending on module size)
Deep Case Carburizing (for large module gears ≥10mm)
Direct Oil Quenching
Quench medium: Fast quenching oil (60-80°C)
Cooling rate: ≥80°C/sec (surface)
Press Quenching (for precision gears DIN Class 4-5)
Distortion control: ≤0.03mm runout

Workpiece Setup
Hydraulic clamping with <0.01mm runout
Wheel Dressing
Diamond dresser, dressing angle ±30°
Rough Grinding
Remove 0.1-0.3mm stock per flank
Finish Grinding
Final pass ≤0.005mm, Ra 0.4μm
Deburring
Automated brush deburring

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Custom configurations available upon request.

We have different specifications of oil forging presses,ring rolling machines,electric arc furnaces,thus we can provide variety of forging,casting and welding materials according to customer's requests.
Large capacity, completed variety of quenching medium: oil,water,salt water,water based mixture.

Company Profile

SHANGHAI TOTEM MACHINERY CO., LTD.

Shanghai Totem Machinery Co., Ltd. (Totem Machinery), founded in 2010, is a leading high-tech enterprise integrating R&D, production, sales, and import-export trade, headquartered in Shanghai.
With 15 years of deep expertise in the machinery industry,Totem Machinery specializes in mechanical equipment, components, and bearings, excelling in providing professional solutions for the design, modification, production, and development of complex structural assemblies (e.g., bearing housing systems: ship supports, rolling mill supports; transmission systems: mining dragline applications, wind power generation, etc.). As an industry leader, our products serve a wide range of sectors, including metallurgy, chemical, shipbuilding, mining, cement, thermal power plants, agricultural machinery, and machine tool accessories.
The company boasts an experienced team of mechanical designers, production engineers, assembly technicians, and sales professionals, equipped with advanced manufacturing technology, precision processing equipment, and state-of-the-art inspection instruments. We have established a comprehensive product quality assurance system and after-sales service network. Upholding the principle of "Quality as the Foundation, Service as the Core, Integrity as the Soul,"Totem Machinery remains committed to innovation and strives to become a global benchmark in the machinery manufacturing industry.

In order to avoid the finish products rusted and damaged during the transportation ,we will design the right packing according to the shape,size and usage of the products.

Strictly quality inspection system can produce high quality products. For each order,we can provide report for material chemical components testing,UT testing, hardness, mechanical property testing(impact testing,yield strength testing,tensile strength testing),size inspection,etc.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Professional Customization Services
Complate processing solution  
Perfect quality control system

Bearing Chock
Gear Shaft
Gear Wheel
Flange Shaft
Girth Gear

FAQ

Q.What's TOTEM product processing progress?
A.Drawing CHECK, Make Forging Mold, Forging Mold Quality Inspection Check, Machine Processing, Check Size\Hardness\Surface Finish and other technical parameters on drawing. 
 
Q.How about TOTEM's export package?
A.Spray anti-rust oil on Herringbone Gear Shaft, Wrap waterproof cloth around Gear Shaft for reducer, Prepare package by shaft shape&weight to choose steel frame, steel support or wooden box etc.
 
Q.Could I customize gear\gear shaft on TOTEM?
A.We supply customized Gear Shaft,Eccentric Shaft,Herringbone Gear,Internal Gear,Bevel Gear with big module, more than 1tons big weight, more than 3m length, forging or casting 42CrMo/35CrMo or your specified required material. 
 
Q.Why can I choose TOTEM?
A.TOTEM has 24hrs Salesman on-line, guarantee quick and positive feedback.
TOTEM Machinery invests and becomes shareholders of several machine processing factories, forging factories, casting factories, relies on these strong reliable and high-quality supplier's network, to let customers worry-free purchase.
Experienced and Professional Forwarder Guarantee Log. transportation.