Totem OEM Precision-Machined 56nicrmov7 Alloy Steel Forged High-Temperature Mandrel

• Customization: Available
• After-sales Service: 6-12months
• Warranty: 6-12months
• Model NO.: Large
• Logo Printing: with Logo Printing
• Size: Middle
• Customized: Customized
• Type: Cutter Bar
• Material: 56nicrmov7
• Certification: ISO 9001:2008, CE
• Stiffness & Flexibility: Forging
• Heat Treatment: Quenchining
• Hardness: HRC 50-55
• Certificate: ISO
• Standard or Nonstandard: Nonstandard
• Defect Control: Ut, Mt
• Transport Package: Export Package (Wooden Box, Steel Frame etc. )
• Specification: large
• Trademark: TOTEM/OEM
• Origin: China
• HS Code: 8483409000
• Production Capacity: 100 T/Y
• Package Size: 100.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 80.000kg

Product Description

Product Description

Totem OEM Precision-Machined 56NiCrMoV7 Alloy Steel Forged High-Temperature Mandrel

Totem OEM Precision-Machined 56NiCrMoV7 Alloy Steel Forged High-Temperature Mandrel is engineered for rolling mills in steel plants, ideal for precision rolling under extreme pressure and temperature. Forged from premium tool steel and heat-treated to HRC 50-55, it delivers exceptional wear resistance and fatigue strength, ensuring extended service life.We specialize in manufacturing forging parts, casting parts, machining parts, and welding parts, serving heavy industries globally.

Finished Product Image

This Precision-Machined 56NiCrMoV7 Alloy Steel Forged High-Temperature Mandrel Material: Special alloy steel 56NiCrMoV7 (1.2714), with a hardness of HRC 50-55 and excellent high-temperature fatigue resistance.

Design Purpose: Specifically engineered for steel mill rolling stands, ensuring stable rolling performance under high-pressure and high-temperature conditions.

Specification

Key Features

1. Grain Refinement 
Forging reshapes metal grains under high temperature/pressure, enhancing toughness and fatigue resistance, while avoiding coarse grain defects typical in castings.
2. Uniform Hardness
Achieves HRC 50-55 after heat treatment, with consistent hardness distribution (unlike castings prone to segregation).
3. Precision Requirements
Mandrels must meet ±0.02mm dimensional tolerance and Ra≤0.4μm surface finish, attainable only through forging + precision machining..

Applications
Steel Rolling Mills
Hot rolling of billets, plates, and structural steel sections.
Cold rolling of precision thin strips.
Heavy-Duty Machining
High-pressure cutting tools for alloy steel processing.
Forging Equipment
Die positioning shafts in hydraulic forging presses.

Machinery Processing

Forging: Precision hot-forged under 1200°C to enhance grain structure.
Heat Treatment: Quenched & tempered to achieve HRC 50-55 hardness.
Machining: CNC-turned with ±0.02mm tolerance, followed by grinding/polishing.
Surface Treatment: Optional nitriding or chrome plating for corrosion resistance.

Precision Grinding

Polishing

Performed with CNC cylindrical/centerless grinders.
Delivers ultra-fine surface finish (Ra ≤0.4μm) and micron-level accuracy (±0.005mm).
Essential for high-wear components like mandrels and bearing seats.

Mechanical/electrolytic polishing for Ra ≤0.1μm surfaces.
Eliminates micro-cracks and improves corrosion resistance.
Commonly used for sealing surfaces and fluid contact parts.

Technical Specifications

We can manufacture different type of gears according to drawing.  

Parameter	Specification
Material Grade	56NiCrMoV7 (1.2714)
Hardness	HRC 50-55
Tensile Strength	≥1550 MPa
Operating Temperature	-20°C to +400°C
Surface Roughness	Ra ≤0.4μm (ground)
OEM Service Offered	According to Customer Drawings
Segments Gear Offered	According to Customer Requests

Packaging & Shipping

Packaging Specifications

Packaging: Wooden crates with anti-rust VCI film, secured by steel straps.
Shipping: Protected edges with foam spacers.
MOQ: 1 piece (custom orders accept small batches).

Free technical consultation & installation guidance.
OEM/ODM accepted: Customize based on your drawings/samples.
Warranty: 12 months (excludes improper use).

HOT SALE PRODUCTS

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.