Support Rolls 74 mm in GCr15 for Fast Speed Galvanizing Lines
On a fast galvanizing line the support rolls inside the leveler run continuously under load, so wear resistance and dimensional accuracy decide how long the cassette holds its geometry. This roll uses GCr15 for the rolling surface on a carburized 20CrMnTi shaft.
- Roll material high quality GCr15
- Shaft 20CrMnTi, carburized and quenched
- Dimensions 74 by 192 mm
- For tension levelers on fast galvanizing lines
Key Benefits
What the roll delivers at line speed.
Wear Resistance At Speed
GCr15 provides exceptional wear resistance, which significantly extends service life on a continuously running line.
Stable Support
Consistent support ensures the flatness and quality of steel plates or strips through the straightening process.
Dimensional Accuracy
The 74 by 192 mm size is manufactured with advanced processes so dimensional accuracy and surface quality are repeatable between rolls.
Where It Is Used
Where it is used.
- Fast speed galvanized production lines
- Tension leveler cassettes
- Straightening machines in steel production
- Continuous coating line levelling sections
Who It Is For
- Galvanizing line maintenance teams
- Plants stocking 74 mm support rolls
- Rebuild shops servicing leveler cassettes
- Buyers standardising on a documented material specification
Problems It Solves
- Support roll wear at high line speed
- Flatness loss as support geometry changes
- Shaft wear at the bearing interface
- Dimensional variation between replacement batches
Technical Features
Material and manufacturing.
GCr15 Rolling Surface
High quality GCr15 gives the wear resistance needed for continuous high speed duty.
Carburized 20CrMnTi Shaft
The shaft is 20CrMnTi, carburized and quenched, so the core stays tough under load.
Precision Manufactured Size
The 74 by 192 mm dimension is produced with processes that hold dimensional accuracy and surface quality.
Specifications
This is a defined size. Other dimensions are produced to drawing.
| Roll Material | High quality GCr15 |
|---|---|
| Shaft Material | 20CrMnTi, carburized and quenched |
| Dimensions | 74 by 192 mm |
| Function | Support component in tension levelers |
| Line Type | Fast speed galvanized production lines |
| Supply | Individually or as cassette sets |
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, the roll hardened for wear resistance.
Grinding And Assembly
Surfaces are ground and the roll assembled to size.
Quality Control
- Material certificates for both grades
- Hardness verification
- Dimensional inspection to 74 by 192 mm
- Surface quality check before packing
Customization Options
- Other dimensions to drawing
- Material specification per duty
- Cassette set quantities
- Position marking for reassembly
Use Guide
- Replace support rolls as a full row
- Check bearing and shaft fit during assembly
- Order ahead of the wear limit to avoid emergency lead time
- Store rolls dry, bearing steel corrodes quickly
How It Compares
Against alternative constructions.
| Single material rolls | Splitting roll and shaft material gives wear resistance on the surface and toughness in the shaft. |
|---|---|
| Softer support rolls | GCr15 holds its surface at the speeds a modern galvanizing line runs. |
| Undocumented replacements | Material grade, hardness and dimensions are stated and verified before shipment. |
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Read MoreSupport Roll 74 mm for Fast Galvanizing Lines FAQ
What material is the support roll?
The roll is high quality GCr15 for wear resistance. The shaft is 20CrMnTi, carburized and quenched.
What size is supplied?
74 by 192 mm as standard. Other dimensions are produced to your drawing.
Which lines is it used on?
Tension levelers on fast speed galvanized production lines and other straightening machines in steel production.
Should we replace rolls individually?
Replace them by row so support stays even across the cassette.
Can you supply complete sets?
Yes, sets can be supplied marked by cassette position.
What do you need to quote?
Roll dimensions or drawing, machine type, quantity per set and annual usage.
Order 74 mm Support Rolls
Send your dimensions and quantity and we confirm material, hardness and delivery.