Leveling Cassette Working Roll Sleeves in Standard Diameters
In cassette style levelling equipment the roll sleeves are the parts that set levelling accuracy and finished surface quality. Standard diameters of 30 mm, 45 mm and 70 mm cover most cassette structures on the market, so a worn set can be replaced without redesigning the cassette.
- Standard diameters 30 mm, 45 mm and 70 mm
- Surface hardness HRC 58-62 and above
- Deep uniform hardened layer
- Compatible with most common cassette models
Key Benefits
What a good sleeve set delivers.
Levelling Accuracy Restored
Because the sleeves determine overall levelling accuracy, a fresh set brings the cassette back to its original flatness capability.
Surface Quality Protected
A smooth hard surface avoids indentation marks on the strip during long continuous runs.
Fits Existing Cassettes
Standardised dimensions match most levelling cassette structures and equipment models, which keeps the replacement simple.
Where It Is Used
Where they are used.
- Cassette style levelling machines on strip lines
- Tension levelling cassettes in coating lines
- Levelling units in cut to length lines
- Non ferrous strip levelling for copper and aluminum
Who It Is For
- Plants running cassette style levellers
- Maintenance stores holding sleeve sets per diameter
- Service centres levelling mixed materials
- Buyers matching sleeves to an existing cassette
Problems It Solves
- Levelling accuracy falling off as sleeves wear
- Indentation marks on strip during long runs
- Mixed sleeve diameters inside one cassette
- Sourcing sleeves for cassettes whose maker no longer supplies them
Technical Features
Material and hardness.
Alloy And Tool Steel
Sleeves are fabricated from high purity alloy steel and premium grade tool steel selected for indentation resistance.
HRC 58-62 Surface
Standardised heat treatment gives a stable surface hardness of HRC 58-62 and above with a deep uniform hardened layer.
Three Standard Diameters
Mainstream diameters of 30 mm, 45 mm and 70 mm cover the majority of cassette designs.
Specifications
Standard diameters are listed below. Non standard sizes are made to drawing.
| Standard Diameters | 30 mm, 45 mm, 70 mm |
|---|---|
| Surface Hardness | HRC 58-62 and above |
| Hardened Layer | Deep and uniform through the working surface |
| Material | High purity alloy steel and premium grade tool steel |
| Compatibility | Most common levelling cassette structures and equipment models |
| Strip Materials Served | Carbon steel, stainless steel, copper, aluminum |
Materials
- High purity alloy steel
- Premium grade tool steel
- Optional surface treatment on request
Manufacturing Process
Diameter Confirmation
We confirm the cassette diameter and length against your sample or drawing.
Turning And Boring
Sleeve outside diameter and bore are machined to the fit required by the cassette shaft.
Heat Treatment
Standardised heat treatment brings the surface to HRC 58-62 with a uniform case.
Finish Grinding
The working surface is ground for roundness and roughness before inspection.
Quality Control
- Hardness checks across the sleeve surface
- Bore and outside diameter inspection
- Roundness and wall thickness verification
- Set matching so diameters are consistent within a cassette
Customization Options
- Non standard diameters and lengths to drawing
- Bore and fit matched to your cassette shafts
- Surface treatment for specific strip materials
- Supplied as complete cassette sets
Use Guide
- Replace sleeves as a full set to keep diameters even
- Check the shaft fit before pressing on new sleeves
- Match strip material to surface specification when ordering
- Keep a spare set per diameter to shorten shutdowns
How It Compares
Sleeves against solid rolls.
| Solid work rolls | Only the wearing surface is replaced, so the cassette shafts stay in service and spare cost per change is lower. |
|---|---|
| Non standard one off sleeves | Standard 30, 45 and 70 mm diameters can be stocked and are compatible with most cassette models. |
| Lower hardness sleeves | HRC 58-62 with a deep case resists indentation during long continuous runs instead of flattening under load. |
Related Products
Tension Leveler Working Rolls
Hard chrome plated working rolls with HRC 63-65 surface hardness for tension leveling lines.
View Details
Chrome Plated Working Roll for 1450 mm Tension Leveler
Consumable work roll for 1450 mm galvanizing line tension levelers, chrome plated 0.05 mm.
View Details
High Precision Straightening Rolls
Precision ground alloy steel straightening rolls for longer runs between roll changes.
View Details
Precision Leveling Line Rolls
Leveling line rolls with uniform high hardness and a deep integral hardened layer.
View Details
Related Technical Articles
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 More
How Hard Chrome Plated Working Rolls Improve Tension Leveler Stability
Wear resistance, friction and rigidity, and the numbers behind each of them on a 16 to 68 mm roll.
Read MoreThe Role Of Leveling Line Rolls In Finished Strip Qualification Rate
Roll deflection, hardness and bending adjustment are the three levers that decide how much of your output passes inspection.
Read MoreLeveling Cassette Working Roll Sleeves FAQ
Which diameters do you stock as standard?
Mainstream diameters of 30 mm, 45 mm and 70 mm, which are compatible with most levelling cassette structures on the market.
What hardness do the sleeves reach?
A stable surface hardness of HRC 58-62 and above, with a deep uniform hardened layer from standardised heat treatment.
Can you make a size that is not on the list?
Yes. Send the drawing or a sample sleeve and we produce to those dimensions.
Which strip materials are they used for?
Carbon steel, stainless steel, copper and aluminum strip, among other materials processed on cassette levellers.
Should we replace one sleeve or the whole set?
Replace the full set. Mixed diameters inside one cassette change the roll gap geometry and the levelling result.
What do you need to quote?
Diameter, length and bore of the sleeve, the cassette model if known, quantity per set and annual usage.
Replace Your Cassette Sleeve Set
Send the sleeve dimensions or a photo of your cassette and we confirm compatibility and price.