Product Specification
4-1/2" x 4" INTERLEAF SANDING DRUM
The Benchmark Abrasives 4-1/2" x 4" Interleaf Sanding Drum is built to sand and condition in the same step, combining coated aluminum oxide sanding flaps with surface conditioning material for efficient blending across broad surfaces. Like an interleaf flap wheel, the coated abrasive sanding flaps are layered between the surface conditioning material flaps, giving the drum more cutting action than surface conditioning material alone while simultaneously refining the scratch pattern.
Each configuration pairs a specific aluminum oxide grit with a corresponding surface conditioning grade: 80 grit with Coarse, 120 grit with Medium, and 240 grit with Fine. This combination gives fabricators a controlled progression from stronger material removal and deburring through general blending, weld refinement, and finer surface finishing.
Product Specifications
| Specification |
Details |
| Diameter |
4-1/2" |
| Width |
4" |
| Coated Abrasive |
Aluminum Oxide |
| Construction |
Coated Abrasive Sanding Flaps + Surface Conditioning Material |
| Mounting |
Keyway |
| Available Combinations |
Coarse + 80 Grit, Medium + 120 Grit, Fine + 240 Grit |
| Maximum Speed |
4,000 RPM |
| Use |
Dry Only |
| Quantity |
1 Drum |
Features
-
Interleaf construction places coated aluminum oxide sanding flaps between surface conditioning material flaps to sand and condition in one operation.
-
Coated abrasive sanding flaps provide cutting action for material removal, deburring, weld blending, and scratch refinement.
-
Surface conditioning material blends and refines the scratch pattern while the coated abrasive cuts.
- Provides more cutting action than surface conditioning material alone while helping blend the scratch pattern left by the coated abrasive flaps.
-
Wide 4" working face covers broad areas efficiently and helps create a more uniform finish.
- Available in three matched combinations: Coarse + 80 grit, Medium + 120 grit, and Fine + 240 grit.
- Designed for compatible portable surface-finishing and drum-sanding machines using the appropriate keyed mounting setup.
Applications & Performance
Designed for applications that require both controlled cutting action and surface refinement.
- Material removal
- Deburring
- Rust and oxidation removal
- Weld cleanup and weld blending
- Scratch blending and refinement
- Surface conditioning
- Cleaning
- Intermediate finishing
- Surface preparation
- Final finish refinement
Materials include:
- Steel
- Stainless steel
- Cast iron
- Copper
- Wood
- Fiberglass
- Plastic
- Hard rubber
- Stone
For stainless steel work, keep abrasives used on stainless separate from abrasives previously used on carbon steel to reduce the risk of iron contamination and rust spotting.
Start with the combination that matches the amount of material removal and surface refinement required, then move to a finer combination as needed to achieve the desired finish.
Machine Compatibility
Designed for portable surface finishing machines, linear grinders, burnishers, contouring grinders, and drum sanding machines.
Compatible examples include:
-
Eastwood® Contour SCT® (21145)
-
HERCULES® HE68 Surface Conditioning Tool (70979)
-
Metabo® SE 17-200 RT with the appropriate keyed drum arbor
An adapter or additional mounting hardware may be required. Use a setup that securely holds a 4-1/2" diameter x 4" wide drum, allows proper guard clearance, and operates at or below 4,000 RPM.
Safety Tips
- Never exceed the drum's maximum speed of 4,000 RPM. Maximum RPM is a safety limit, not a recommended finishing speed.
- Use dry only.
- Start with light pressure and allow the abrasive and surface conditioning material to work. Excessive pressure can generate unnecessary heat, deform the media, and shorten drum life.
- Disconnect the machine from its power source before installing, removing, or inspecting the drum.
- Confirm that the drum is properly seated and securely retained before operation.
- Stop immediately if abnormal vibration occurs and inspect the drum, mounting hardware, and setup before continuing.
- Keep machine guards and auxiliary handles installed as specified by the tool manufacturer.
- Wear appropriate eye, hearing, respiratory, and hand protection for the material and application.
- Secure the workpiece and keep loose clothing, hair, and hands away from rotating components.
- Do not use these wide sanding drums on electric drills.
