Back Up Rolls in GCr15 for Straightening Leveler Machines
The back up roll is an essential component of the straightening machine, giving the work rolls the support they need to hold flatness. This build pairs a GCr15 rolling surface with a carburized and quenched 20CrMnTi shaft, in a 74 by 192 mm size.
- Roll material high quality GCr15
- Shaft 20CrMnTi carburized and quenched
- Dimensions 74 by 192 mm
- Backed by more than 20 years producing this component
Key Benefits
What the roll provides.
High Wear Resistance
GCr15 provides exceptional wear resistance which significantly extends service life in straightening duty.
Stable Support Strength
Stable support is what ensures the flatness and quality of steel plates or strips during the straightening process.
Dimensional Accuracy
The 74 by 192 mm size is manufactured using advanced processes so dimensional accuracy and surface quality are consistent.
Where It Is Used
Applications.
- Straightening leveler machines in steel production
- Tension leveler cassettes
- Strip and plate processing lines
- Planned replacement programmes for roll spares
Who It Is For
- Straightening machine operators
- Plants holding back up roll stock
- Rebuild shops servicing cassettes
- Buyers matching a documented material specification
Problems It Solves
- Support roll wear affecting plate flatness
- Shaft wear at the bearing interface
- Variation between replacement roll batches
- Short service life under continuous straightening
Technical Features
Materials and build.
GCr15 Roll Surface
High quality GCr15 gives the rolling surface its wear resistance.
Carburized 20CrMnTi Shaft
The shaft is 20CrMnTi, carburized and quenched, giving surface hardness with a tough core.
Precision Manufacturing
Advanced processes ensure dimensional accuracy and surface quality on every roll.
Specifications
This is a defined size. Other dimensions are produced to drawing.
| Roll Material | High quality GCr15 |
|---|---|
| Shaft Material | 20CrMnTi, carburized and quenched |
| Shaft Surface Hardness | HRC 58-62 |
| Dimensions | 74 by 192 mm |
| Function | Support component in straightening leveler machines |
| Experience | Over 20 years producing this component |
Materials
- GCr15 bearing steel roll
- 20CrMnTi carburized and quenched shaft
- Ground roll and shaft surfaces
Manufacturing Process
Material Preparation
GCr15 and 20CrMnTi bar are prepared for roll and shaft.
Machining
Both parts are turned with grinding allowance.
Heat Treatment
The shaft is carburized and quenched to HRC 58-62 while the roll is hardened for wear resistance.
Grinding And Assembly
Surfaces are ground and the roll assembled to the 74 by 192 mm size.
Quality Control
- Material certificates for both grades
- Shaft hardness verification
- Dimensional inspection to size
- Surface quality check before packing
Customization Options
- Other roll and shaft dimensions to drawing
- Material choice for specific duty
- Batch quantities for scheduled replacement
- Position marking for reassembly
Use Guide
- Replace rolls across the full row
- Check shaft fit in the housing during assembly
- Order before the current set reaches its wear limit
- Keep rolls dry in storage, bearing steel corrodes quickly
How It Compares
Against alternatives.
| Single material construction | Separate roll and shaft materials give wear resistance at the surface and toughness in the shaft. |
|---|---|
| Softer support rolls | GCr15 holds its surface under continuous straightening load. |
| Undocumented replacements | Material grade, hardness and dimensions are stated and verified before shipment. |
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Read MoreBack Up Roll in GCr15 for Straightening Levelers FAQ
What is the roll made of?
High quality GCr15 for the roll with a 20CrMnTi shaft that is carburized and quenched to HRC 58-62 surface hardness.
What size do you supply?
74 by 192 mm as standard, with other dimensions produced to drawing.
Why does the back up roll matter?
It provides the stable support that ensures flatness and quality of plates or strips during straightening. If it wears, the work rolls deflect.
How long have you made this part?
More than twenty years of production experience on back up rolls for leveling and straightening machines.
Can you supply matched sets?
Yes, sets can be supplied marked by position for straightforward reassembly.
What do you need to quote?
Roll dimensions or drawing, machine type, quantity per set and annual usage.
Order Back Up Rolls
Send your roll dimensions and machine type and we confirm material, hardness and delivery.