1384 Bungalow Rd.
Morris, Illinois, U.S.A.
Substrate Technology, Inc.
Prep/Master® Grinders, Dust Collectors, and Diamond Systems
Substrate Technology
This is our own line — the equipment and tooling we build, brand, and stand behind. As the makers of the Prep/Master® grinder and the source for STI diamond tooling, polishing systems, and patented terrazzo pads, we bring you products engineered from decades of real-world surface prep experience — and backed by experts who actually know the work. Call and talk to a real surface-prep expert, not a call center.
The Prep/Master® Grinder
The heart of our line: the Prep/Master® grinder — our own low-maintenance, gear-to-gear concrete grinder and polisher, built to last and available in a range of sizes. We design it, build it, and support it in-house. Learn more about the Prep/Master.
FL-07 Diamond Pads — Our #1 Patented Pad
Our best-selling pads, period: the FL-07 diamond pads are patented and exclusive to Substrate Technology — you can't buy them anywhere else. They're the go-to polishing pad for contractors who know them, fitting a wide range of grinders, and they deliver a consistent, high-quality polish step after step. We also offer them in a ring-type version for hand grinders for edges and detail work. There's one source for FL-07 — and it's us.
STI Diamond Systems & Tooling
Our color-coded diamond polishing systems (CLC, EGT, and TPS) take you from grind to polish on concrete and terrazzo — and we make the full range of STI diamond tooling to go with them:
- Diamond tooling — grinding segments, prep tools, and polishing pads
- Surface prep tooling — for coating and adhesive removal
- EG attachment holders, adapters, and the parts that tie it all together
EG Grout Pans for Terrazzo & Concrete
- Mechanically fills up to 95% of pinholes in terrazzo and concrete floors
- Creates a better shine and longer lasting durability
- Lasts over 10,000 SF (1,000 m²) when following recommendations of running at low speeds
- Available in two grades: regular & extra hard
P/M 3003AR Dust Collector
- 300 CFM (510 m³/h) — strong airflow for effective dust capture
- Three turbines, each 1,000 watts — the power behind its performance
- HEPA filter, OSHA-compliant — captures fine, hazardous silica dust
- Fully automatic self-cleaning filter cartridges — cleans during operation, no manual filter cleaning
- Longopac disposal system — safe, clean collection and disposal of toxic dust and waste
- Optimized proportions — maximum performance at minimum weight
- Strong motors and timing board — dependable, long service life
Electric Concrete Floor Grinder 24″
- Working width: 24 in. (61cm)
- For projects up to 5,000 SF (500m2)
- Electric motor: 20 HP (14.7kW)
- 1 or 3 phase
- Available in 230V or 480V
- Use for surface prep and polishing of concrete, terrazzo, and marble
- Item # 4324200230 – 230 Volt
- Item # 4324200480 – 480 Volt
Electric Concrete Floor Grinder 28″
- Working width: 28 in. (71cm)
- For projects up to 2,000 SF (200m2)
- Electric motor: 7.5 HP (5.5kW)
- 1 or 3 phase
- Available in 230V or 480V
- Use for surface prep and polishing of concrete, terrazzo, and marble
- Item # 4328070230 – 230 Volt
- Item# 4328070480 – 480 Volt
Electric Concrete Floor Grinder 30″
- Working width: 30 in. (76cm)
- For projects up to 10,000 SF (1,00m2)
- Electric motor: 30 HP (22kW)
- 1 or 3 phase
- Available in 230V or 480V
- Use for surface prep and polishing of concrete, terrazzo, and marble
- Item # 433030230 – 230 Volt
- Item# 433030480 – 480 Volt
Electric Concrete Floor Grinder 44″
- Working width: 44 in. (112cm)
- For projects up to 20,000 SF (2,00m2)
- Electric motor: 30 HP (22kW)
- 1 or 3 phase
- Available in 230V or 480V
- Use for surface prep and polishing of concrete, terrazzo, and marble
- Item # 434430230 – 230 Volt
- Item# 434430480 – 480 Volt
Electric Concrete Floor Grinder 23″
- Working width: 23 in. (58cm)
- For projects up to 1,000 SF (100m2)
- Electric motor: 7.5 HP (5.5kW)
- Single phase
- Available in 230V
- Use for surface prep and polishing of concrete, terrazzo, and marble.
- Item # 823752250
Electric Concrete Floor Grinder 27″ | Prep/Master Sr.
- Working width: 27 in. (68cm)
- For projects up to 5,000 SF (500m2)
- Electric motor: 20 HP (14kW)
- 1 or 3 phase
- Available in 230V
- Use for surface prep and polishing of concrete, terrazzo, and marble
- Item # 718000220
Ultra Vac 1250
- Suitable for small to mid-sized machines
- 12.5 Gallon Dust Bin
- HEPA filter, OSHA-compliant
- Two 120 Volt Motors
- 220 CFM
- Dust bin is trash bag friendly and is easy to empty
- Includes 2″ x 25′ Hose
- Item #670050000
Wet/Dry 29-Gallon Concrete Vacuum
- Non-corrosive tank with large 12.5″ top access. Easy to empty via 1.5″ quick drop
- An automatic liquid shut-off prevents motor flooding
- 2 HP 2-stage heavy duty bypass motor (230V option)
- 29-gallon model (22 gal. Wet / 3 Bushel Dry)
- An automatic liquid shut-off prevents motor flooding with foam or solution
- Comes standard with adjustable front-mount squeegee and dry application accessories
- Item #
Patented, Exclusive Terrazzo Pads
Some of our products you can’t get anywhere else. Our patented STI terrazzo pads — like Terrazzo+, Terrazzo REDZ, and our terrazzo polishing pads — are exclusive to Substrate Technology. We hold the patent, so no other supplier can offer them. See our terrazzo tooling.
Built and Backed by STI
When you buy STI, you get more than a product — you get the company behind it: in-house engineering, Lavina-certified, nationwide service, a 1-year repair warranty, and real experts on the phone. Service. Support. Success.
Order STI Equipment Today
Call (815) 941-4800 x 1 or fill out our contact form. See our machines, diamond systems, and diamond tooling.