379 E. Sibley Blvd., Harvey, IL 60426

Case Hardened Rollers

The Hi-Hard Corporation provides precision CNC machined case hardened, flame and induction hardened steel products. The rolls shown here were manufactured from various metals such as alloy steel, 400 stainless steel, and iron. Various sizes were produced featuring outside diameters from 1.5″ to 20″, and up to 175″ in length.

Manufacturing required precision CNC turning and grinding, as well as dynamic balancing. Heat treatment consisted of flame hardening with case depths of 3/32″ to 1/8″ per side and induction hardening with case depths up to 1/4″ per side, with hardness up to 65 Rc. All of the products we produce are put through rigorous quality control, these rolls were tested for dimensional accuracy, surface finish consistency, and NDT testing. For more information on these precision CNC machined case hardened alloy steel rolls, see the table below.

The flame and induction harden rolls are made from medium-high cabon and alloy steels. Rollers can be produced in solid and fabricated form. Hardness and depth of hardness vary on the material used and the metod of hardening performed. The induction harden product is good for heavy/medium wear applications and offer good life with the ability of great case depth. The flame hardened product is good for light wear applications. These products offer shorter lead times and depending on size can be the lowest cost case hardened product.

Product Description

Precision CNC Machining Capabilities Applied/Processes

CNC Machining 
Lathe Turning

Heat Treatment

Equipment Used to Manufacture Part

Cylindrical Grinder 
Heat Treatment Furnace 
Quench Tank

Temper Box 
Vertical Mill 
Dynamic Balance 


Long Case Depth and Hardness Roll Life

Short Lead Time to Produce

Ideal for Light, Medium, or Heavy Wear Applications

Overall Part Dimensions

O.D.: ø 1.5″ to 20″

Length: up to 175″

Tightest Tolerances


Material Used

Alloy Steel: 1045, 4140, 4150, 52100, 6150
400 Stainless Steel

Heat Treatment

  • Flame hardening
  • Induction hardening
  • Hardness up to 65 Rc
  • Can draw hardness back to lower levels by tempering
  • Size will vary depending on heat treat method

Material Finish


  • Ground to desired specification
  • Coatings – chrome, TCC, zinc
  • Shot blast

In Process Testing/Inspection Performed

Dimensional Testing 

Hardness Testing

NDT Testing

Surface Finish Testing

Industry Focus


Can Flooring

Food Processing

Non-Ferrous Operations



Push Pull Pickle Lines



Steel Service Centers 

Steel – Cold Mills 

Steel – Pickle Lines 

Steel – Galvanizing Lines

Steel – Temper Mill

Steel – Hot Mills

Steel – Plate Mills 

Z Mill Operations

Delivery/Turnaround Time

4 Weeks Min

Delivery Location

United States 



Standards Met

Customer supplied print, 2D CAD Drawing

Product Name

Case Hardened – Flame and Induction Hardened Products

Satisfaction Guaranteed

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