Straight from the Source

Prep/Master Jr. Electric Floor Grinding Machine


  • Our customers’ favorite little grinder!
  • Heavy head pressure for a better grind and polish — 60% of its weight is on the head!
  • Ideal for residential, garage, and basement projects up to 1,000 SF (100 m2)
  • Electric motor: 7.5 HP (5.6kW)
  • Easy disassembly of machine into two sections for easy transportation into hard to reach locations
  • Call (815) 472-9744 to speak to an expert.

**Ready for immediate delivery**

12 months with 0% interest for qualified customers on equipment purchases of $10,000 or more.


Prep/Master Jr. Electric Floor Grinding Machine

Engineered and crafted for Polishing Projects up to 1,000 SF (100 m2)

If you’re in need of a compact yet powerful and efficient floor grinding machine, the Prep/Master Jr. Electric Floor Grinding Machine is for you! Designed and crafted for small, medium, and large-sized surface preparation projects up to 1,000SF (100 2). Say goodbye to the dreaded days of limited accessibility and say hello to working with a more compact design that grants surface preparation professionals the ability to reach tight and hard-to-reach surfaces.

Due to the state-of-the-art STI rotary gear system, this grinder operates extremely smoothly yet aggressively. Along with that, this floor grinding machine is priced very cost-effectively when compared to other similarly capable machines. Please note, it is recommended that any individual operating the Prep/Master Jr. Electric Floor Grinding Machine follows it’s safety manual as closely as possible in order to avoid safety hazards or risks as well as project downtime and other project-related setbacks.

Prep/Master Jr. Electric Floor Grinding Machine Technical Specifications

  • A working width of 23 inches (58 centimeters)
  • A reliable and powerful 7.5 HP (5.6kW) motor
  • 220-240V Single Phase, 40A
  • 50 ft. cord & plug (not included, but can be purchased in an upgrade package)
  • 2 tool plates (included)
  • Uses 6 tools
  • An overall weight of 450 lbs. (204 kg) including pocket weights

Prep/Master Jr. Electric Floor Grinding Machine Unique Features

  • Heavy head pressure resulting in better grinding and polishing, as 60% of its weight is on the machine’s head!
  • Magnetic LED Light to light up the front of the machine or behind the machine on the cutting path
  • Painless disassembly of machine into two sections for easier transportation (Grinding head = 260 lbs. // Handle = 130 lbs. // Two Pocket Weights = 30 lbs. each)
  • Screw-in Carrying Poles for 2 or 3 person lifting
  • 8-gallon (30 liters) water tank
  • An on-board USB Charger and Phone Carrier

Be sure to check out our grinders and polisher parts and accessories to learn more about our adapter plates, velcro attachments, resin inserts, light kit upgrades, maintenance kits, Morflex couplers, STI cord charts, STI edge plates, as they may be of help to you and your surface preparation team.

Contact Your Prep/Master Floor Grinding Machine Experts Today

If you have any questions regarding the Prep/Master Jr. Electric Floor Grinding Machine and would like to receive a complimentary quote, contact the burnisher and floor machine subject matter experts today at (815) 278-1308 or by filling out our contact form. We would be happy to educate and guide you any way we’re able to!

PrepMaster Jr. Electric Floor Grinding Machine For Sale Buy Manufacturers Direct sells surface preparation equipment such as floor scrapers, burnishers and floor machines (such as the Prep/Master Jr. Electric  Floor Grinding Machineshot blasters, diamond grinders, scarifiers, profilers, and dust collectors. Along with the machines, BMD only sells OEM consumable parts so that the machines are as effective as they are designed to be. Buying from BMD you are buying through a channel that is endorsed and supported by its vendor partners. This means you have direct access to the people that make what you buy and know the product better than anyone.

Additional information

Weight 510 lbs
Dimensions 48 × 40 × 58 in

Complete, Without cord or plugs





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