Back Up Rolls For Leveling and Straightening Machines
The support side of the cassette, where rigidity comes from, and the first place to look when flatness will not hold.
New work rolls will not fix flatness if the back up rolls behind them are worn. Support geometry is what stops the work rolls deflecting under load.
Back Up Rolls We Supply
Built in GCr15 with carburized 20CrMnTi shafts, in defined sizes such as 74 by 192 mm and to your own drawing.
Premium Back Up Rolls for Leveling Machines
Deep heat treated and precision ground back up rolls, roundness held to 0.005 mm class.
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Back Up Rolls for Leveling Machines With 20 Years of Production Experience
Back up rolls developed through two decades of focus on this one component in metallurgy.
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Back Up Roll in GCr15 for Tension Levelers
GCr15 back up rolls on carburized 20CrMnTi shafts at HRC 58-62, size 74 by 192 mm.
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Support Roll 74 mm for Fast Galvanizing Lines
GCr15 support roll, 74 by 192 mm, with 20CrMnTi carburized shaft for high speed lines.
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Back Up Roll in GCr15 for Straightening Levelers
GCr15 back up rolls, 74 by 192 mm, with 20CrMnTi carburized shafts for straightening machines.
View DetailsWho Buys Back Up Rolls
Who buys back up rolls.
- Plants where leveling precision is a delivery requirement
- Maintenance stores holding support roll spares
- Rebuild shops servicing leveler cassettes
- Machine builders specifying complete roll systems
- Work roll deflection from worn support rolls
- Flatness varying between shifts
- Shaft wear at the bearing interface
- Short roll life under modern rolling loads
Why Plants Source Back Up Rolls From Ascon
Two decades on one component.
Deep Heat Treatment
Hardness runs deep into the body rather than sitting in a thin case, so the roll supports several regrinds.
Geometry In The 0.005 mm Class
Precision grinding to 0.005 mm class geometry with 0.2 micron surface finish keeps support even along the barrel.
Two Material Construction
GCr15 rolling surface on a carburized and quenched 20CrMnTi shaft at HRC 58-62 gives wear resistance and core toughness together.
Application Scenarios
Where they are fitted.
Tension Leveler Cassettes
Supporting work rolls in galvanizing, coating and processing line levelers.
Straightening Machines
In steel plant straightening equipment where flatness is the delivery specification.
Fast Galvanizing Lines
Continuous duty at line speed where wear resistance decides the service interval.
Technical Reading
Tension Leveler Spare Parts Planning For AHSS Galvanizing Lines
What to stock, when to replace and why advanced high strength steel changes the roll wear calculation.
Read MoreWhy The Back Up Roll You Bought Is Not Durable
Three reasons back up rolls fail early, and how to tell which one you have by opening the roll and measuring runout.
Read MoreCutting The Spare Parts Budget Without Cutting Line Stability
What actually differentiates consumable roll suppliers, and how to qualify one without betting the line on it.
Read MoreBack Up Rolls Buying Questions
Why replace back up rolls at all?
They provide the rigidity behind the work rolls. Worn support rolls let the work rolls deflect, so flatness problems return quickly after a work roll change.
What material do you use?
High quality GCr15 for the rolling surface and 20CrMnTi for the shaft, carburized and quenched to HRC 58-62 surface hardness.
What sizes do you produce?
Defined sizes such as 74 by 192 mm, plus any dimension to your drawing or sample.
What accuracy do you grind to?
Geometry in the 0.005 mm class with surface finish around 0.2 micron.
How often should they be replaced?
Planned from tonnage and observed wear. We can advise an interval once we know the line duty and strip material.
Can you supply the whole roll system?
Yes, work rolls, intermediate rolls and back up rolls can be produced as a matched set.
Check The Support Side
Send your back up roll drawing or a photo of the worn roll and we quote a replacement set.