Problem Adjustment or Use

Result

SSC Solutions

Sanding Head Differentials (Depth of cut)

Sanding heads almost never set to remove the correct amount. Most heads are set to remove 3 to 5 times more then the abrasive belts' maximum removal capacity with some heads not being in the cut at all.

Need knowledge of depth of scratch and maximum material capability for grit belt being used.

SSC Product
"Principles of Widebelt Sanding & Data Reference Manual"
 

Side-To-Side Head Adjustment

Sanding heads are almost always out of alignment side-to-side, or the heads are not parallel to the feed bed or to each other. Many times, head alignment is also off side-to-side in the opposite direction.

Machine needs to be checked daily.

SSC Products
"Principles of Widebelt Sanding & Data Reference Manual"
And Set-Up Device
 

Pinch Rollers & Hold Down Shoes

Seldom set at the proper height relative to the sanding heads and are out of alignment side-to-side as well.

Machine components need to be checked monthly.

SSC Product
Set-up Device
 

Feed Too Fast and Exceed Cutting Capability Of Belts

Creates premature belt loading, burning, streaking, fuzzing, and contributes to blotchy areas. These all add up to belt life and poor quality.

Must use removal parameters outlined in chapter 7 in book.

SSC Product
"Principles of Widebelt Sanding & Data Reference Manual"
 

Machine Operators Feed Down The Center Of The Machine, Instead Of The Entire Width

Abrasive Belts Not Fully Utilized
This practice leads to 20 to 30% of the belt never being fully utilized if at all.

Uneven Wear On Machine Components
Contact drums, platens, conveyor belts and conveyor bed plates become worn down the center resulting in poor sanding quality, high abrasive costs, and ultimately higher and premature machine maintenance costs.
 

Utilize Patented promter/ monitor to insure even feeding.

SSC Product
SandTrack
 

Problem Description

Can Be Caused By

SSC Solution

Fuzzy / Blotchy Finish

1. Specie of wood.
2. Moisture content
3. Type of abrasive mineral
4. Belt speed
 

Covered in Section 9 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Poor Dust Extraction

1. Inadequate airflow
2. Improperly designed dust hoods
 

Covered in Section 10 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Chatter & Belt Splice Marks

1. Machinery deficiencies
2. Belt splices
 

Covered in Section 11 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Streaks

1. Contact drum
2. Graphite cover
3. Backing material
4. Rollers
5. Belt oscillation
6. Hold down shoes
7. Parts feed direction
8. Cut to feed ratio
9. Abrasive belt damage
 

Covered in Section 12 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Spots, Unsanded Areas

1. Panel thickness
2. Panel surface
3. Core stock
 

Covered in Section 13 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Dubbing, Hesitation, Pressure Marks, Grain Relieving

1. Drum or platen
2. Abrasive belt
3. Feed tables
4. Hold down roll or shoe
 

Covered in Section 14 of SSC's "Principles of Widebelt Sanding & Data Reference Manual"and using the Set-up device.

Minimum Part Lengths

1. Hold down system
2. Machine design
3. Conveyor belt
4. Vacuum bed
 

Covered in Section 15 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Narrow Parts

1. Hold down system
2. Pinch rollers
3. Conveyor belt
4. Vacuum bed
 

Covered in Section 16 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Thickness Adjusting (Aperture Setting)

Setting adjustment backlash

Covered in Section 18 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Conveyor Belts
(also belt dressing)
 

1. Belt Friction
2. Belt Condition
 

Covered in Section 19 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Static Electricity

1. Sanding belt
2. Feed System
 

Covered in Section 20 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Abrasive Belt Storage

1. Humidity
2. Storage container
3. Method of storage
 

Covered in Section 21 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Belt Breakage

1. Handling
2. Storage
3. Conditioning
4. Adjustments
5. Belt splice
 

Covered in Section 22 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Belts Crease or Fold

1. Humidity
2. Belt shape
3. Roller shape
4. Roller Adjustment
 

Covered in Section 22 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Belts Run Off Machine

1. Conditioning
2. Humidity
3. Rollers
4. Belt Adjustment
5. Machine defect
6. Type of material being run
 

Covered in Section 22 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".

Belts Slip Under Load

1. Belt adjustment
2. Shock load
3. Contact drums
 

Covered in Section 22 of SSC's "Principles of Widebelt Sanding & Data Reference Manual".