Other Products ｜Smith Drum Scarifiers - Medium Grit

Surface Profiles (SP1 – SP10)

The surface profile (SP) chart is used as a visual representation of desired surface textures, roughness, and general appearance on concrete or asphalt. Each profile has a corresponding number, ranging from SP1 (nearly flat) to SP10 (extremely rough).
The surface profile is defined as the measurement of the average distance from the peaks of the surface to the valleys, as seen through a cross-section of the prepared surface.

The texture and appearance of the profile obtained through the surface-preparation process will vary, depending upon the concrete/asphalt strength, composition, aggregate and finish. On sound surfaces, the range of variation can be controlled to represent these standards, however, as removal depth increases, the profile of the prepared substrate will be increasingly dominant by the type and size of the coarse aggregate.Confirmation that the desired profile has been achieved during the surface-preparation process is done by visually inspecting the surface, then comparing it to the profiles depicted by replica profile tiles, replica putty, replica tape, or SP photos (see below). The replica putty test is ASTM D7682, and the replica tape test is ASTM D4417.

The creation of a surface profile can be accomplished with a variety of tools, equipment and materials, and requires a specification to select the desired SP range, dependent upon the type of overlay system and material thickness to be installed

SMITH Replacement Drum Scarifiers for Concrete & Asphalt Surface Preparation

SMITH Drum Scarifiers are complete replacement cutter drum assemblies engineered to restore the cutting performance of SMITH scarifiers used for concrete, asphalt, and steel surface preparation. Each drum is precision assembled with the proper shafts, cutters, and spacers to deliver consistent cutting action, balanced operation, and the surface profile required for your application.
Available in multiple drum sizes and cutter configurations, these replacement drums allow contractors to quickly swap assemblies for different surface preparation requirements, minimizing downtime while maximizing productivity.

Why Choose Genuine SMITH Drum Assemblies?
Ready-to-Install Assemblies
Each drum includes the required drum body, cutter shafts, cutters, and spacers for the selected configuration, making installation fast and straightforward.
Consistent Surface Profiles
SMITH drum assemblies are engineered to produce predictable Concrete Surface Profiles (CSP/SP), helping contractors meet coating manufacturers' surface preparation requirements.
Heavy-Duty Construction
Built for demanding commercial and industrial applications, SMITH drums are manufactured to withstand continuous use on concrete, asphalt, and steel surfaces.
Quick Drum Changes
Using multiple drum assemblies allows operators to change cutter styles quickly without rebuilding individual drums on the jobsite.

Available Drum Sizes
Choose the drum designed for your SMITH scarifier.
2-Inch Drum
Compact drum designed for narrow surface preparation, edge work, and confined areas.
Compatible with:

Smith FS050 Hand Scarifier
GrindLazer DC21 E Electric Handheld Scarifier

Configuration includes:

Drum assembly
6 shafts
48 cutters
6 spacers
8 cutters per shaft

7-Inch Drum
Ideal for general-purpose scarifying and surface preparation.
Compatible with:

Smith FS1507 Inch Scarifier

GrindLazer RC71 E Electric Handheld Scarifier

Configuration includes:

Drum assembly
Retaining cup
7 shafts
21 cutters
21 spacers

8-Inch Drum
Designed for medium-production concrete and asphalt preparation.
Compatible with:

SMITH SPS8
FS 200
FS 209

Configuration includes:

Drum assembly
6 shafts
156 cutters
36 spacers

Custom cutter patterns and cutting widths are also available.

10-Inch Drum
A high-production drum for larger surface preparation projects.
Compatible with:

SMITH SPS10 Electric
SMITH SPS10 Gas

Configuration includes:

Drum assembly
6 shafts
150 cutters
138 spacers

15-Inch Drum
The largest drum assembly in the lineup, designed for maximum productivity on demanding commercial and industrial jobs.
Compatible with:

SMITH FS351

Configuration includes:

Drum assembly
5 shafts
155 cutters
120 spacers

Typical drum dimensions:

10" × 10" × 19"

Available Cutter Configurations
Choose the cutter pattern that best matches your application.
Coarse Drum (SP7–SP9)
Designed for aggressive material removal and deep surface profiling.
Best for:

Thick coatings
Heavy concrete removal
Asphalt texturing
Trip hazard removal
Bridge deck preparation

Medium Drum (SP5–SP7)
Excellent for general-purpose surface preparation.
Ideal for:

Coating preparation
Concrete resurfacing
Overlay preparation
Floor restoration

Fine Drum (SP4–SP6)
Produces a smoother profile with less aggressive cutting.
Recommended for:

Decorative concrete
Thin coating preparation
Surface cleaning
Light scarifying

 

Common Applications
SMITH Drum Scarifiers are used for:

Concrete surface preparation
Asphalt milling
Coating removal
Epoxy removal
Paint removal
Glue and mastic removal
Sidewalk trip hazard removal
Bridge deck preparation
Parking garage restoration
Warehouse floor preparation
Industrial floor renovation
Surface profiling before overlays
Cleaning concrete and steel surfaces

Compatible SMITH Machines
These drum assemblies are designed for use with:

SMITH FS050
SMITH FS150
SMITH SPS8
SMITH SPS10
SMITH FS351

Selecting the correct drum ensures proper fit, balanced operation, and optimal cutting performance.

Understanding Surface Profiles
Scarifying drums produce different Concrete Surface Profiles (CSP/SP) depending on the cutter style and removal depth.

Surface Profile
Typical Application

SP4–SP6
Light surface preparation, cleaning, and thin coating removal

SP5–SP7
General concrete preparation before overlays and coatings

SP7–SP9
Heavy scarifying, aggressive material removal, and thick coating removal

Choosing the correct profile helps ensure proper adhesion for coatings, overlays, repair mortars, and flooring systems.

Technical Specifications

Specification
Details

Product Type
Replacement Scarifying Drum Assembly

Available Drum Sizes
2", 7", 8", 10", 15"

Cutter Options
Coarse, Medium, Fine

Surface Profile Range
SP4–SP9

Compatible Surfaces
Concrete, Asphalt, Steel

Components Included
Drum, Shafts, Cutters, Spacers (configuration varies by model)

Machine Compatibility
SMITH FS050, FS150, SPS8, SPS10, FS351

Frequently Asked Questions
What is a scarifying drum?
A scarifying drum is the rotating cutter assembly inside a scarifier that holds the cutter shafts, carbide cutters, and spacers responsible for removing concrete, asphalt, coatings, and other surface materials.
Can I replace only the drum instead of the entire machine?
Yes. SMITH replacement drum assemblies allow you to restore your scarifier or quickly switch between cutter configurations without replacing the entire machine.
What is the difference between coarse, medium, and fine drums?
Coarse drums create a more aggressive surface profile for heavy material removal, medium drums are ideal for general-purpose surface preparation, and fine drums produce a smoother finish for lighter applications.
How do I know which drum fits my machine?
Each drum is designed for specific SMITH scarifier models, including the FS050, FS150, SPS8, SPS10, and FS351. Always verify your machine model before ordering.
Can these drums be used on asphalt and steel?
Yes. Depending on the cutter configuration, SMITH drum assemblies can be used on concrete, asphalt, and even steel surfaces for cleaning, profiling, and coating removal.

Asphalt Profiles

 
Concrete Profiles 
Brand:Smith ManufacturingSKU:FS150.1519.MTags:Concrete Scarifiers, Concrete Scarifiers Handheld Scarifiers, Handheld ScarifiersSize:2" Drum for FS050, 7" Rotary for FS 150, 8" Drum for FS 200 and 209, 8" Drum for SPS 8, 10" for SPS 10, 15" for FS 351