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Rolling Mill Rolls

Back Up Rolls

Heavy-duty back-up rolls up to 60 tons — forged and cast grades available for the most demanding mill configurations.

Product Overview

Back-up rolls provide the structural support that prevents work roll deflection, directly determining strip flatness and thickness uniformity. VSAG supplies both forged and cast back-up rolls in sizes up to 60 tons, manufactured to exacting tolerances by our specialist Chinese partners and fully certified for use in tandem and reversing cold mills, hot strip mills, and plate mills.

Applications

  • Tandem Cold Mills (TCM)
  • Reversing Cold Mills
  • Hot Strip Mills (HSM)
  • Plate Mills
  • Steckel Mills
  • Skin Pass Mills

Key Benefits

  • Maintained strip flatness and thickness tolerance
  • Reduced work roll deflection and edge drop
  • Available up to 60 tons for large-format mills
  • High core toughness resisting shock loads
  • Comprehensive UT and hardness certification

Technical Specifications

ParameterValue
Diameter Range800 mm – 2,000 mm
Barrel LengthUp to 4,000 mm
WeightUp to 60 tons
Hardness (surface)40–65 HSD
MaterialForged Steel, Cast Steel, Ductile Iron
Core Toughness>45 J Charpy at -20°C

Materials & Grades

Forged Alloy Steel

Highest toughness and fatigue resistance for cold mill backup positions.

Cast Steel

Good strength-to-cost ratio for hot mill and plate mill backup rolls.

Ductile Iron

Cost-effective solution for lower-load backup positions.

Manufacturing Process

  1. 01

    Steel making and ingot casting or open-die forging

  2. 02

    Rough shaping, annealing, and dimensional inspection

  3. 03

    Quench and temper heat treatment to achieve target hardness profile

  4. 04

    Semi-finish and finish grinding to micron tolerances

  5. 05

    Full ultrasonic volumetric inspection and surface hardness mapping

  6. 06

    Final certification pack including mill certificate and dimensional report

Downloads

Documents available upon enquiry. Contact us to request technical documentation.

Frequently Asked Questions

What is the maximum roll weight you can supply?

We regularly supply backup rolls up to 60 tons. Heavier rolls can be quoted on request.

How do you handle shipping of large rolls?

We coordinate sea freight in dedicated flat-rack or open-top containers with heavy-lift port handling. Door-to-mill delivery is available.

Can backup rolls be reconditioned?

Yes. Backup rolls can be reground multiple times over their service life. We also support scheduling of roll sets to optimise reconditioning cycles.