Business Hours & Associations

Regular Business Hours:
7:00 a.m. - 4:00 p.m. C.S.T.

Association Members of:

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Buy, Rent, or Sell Sweepers & Scrubbers

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Prep/Master® Jr.

Ideal for Polishing Projects up to 1,000 SF/ 93 M2

P/M Jr & underneath

Special Features:

  • NEW & IMPROVED design and performance for our smallest addition!
  • Heavy head pressure for better grind and polish
  • Magnetic LED Light to illuminate front of machine or behind machine on the cutting path
  • Easy disassembly of machine into two sections for transportation (grinding head weight=260 lbs. & handle weight=130 lbs.)
  • Screw-in Carrying Poles for two-three person lifting
  • 8-gallon (30 litres) water tank
  • On-board USB Charger & Phone Carrier
Item #823752201

Motor 7.5 HP, Variable Speed Drive | 5.6kW Tools Needed 6
Power Source 220-240V Single Phase, 40A Tools RPM 250-500 RPM Variable
Weight (including pocket weights) 455 lbs. | 206 kg Tools Attachment Style EG Proprietary Attachment System
Dimensions 50" L x 23" W x 48" H
127cm x 58cm x 122cm
Vacuum Hose Connection 2" | 50 mm (sold separately)
Working Width 23 in. | 58 cm Recommended Vacuum 3003G (300CFM) or equivalent

Production Rates
Mastic Removal Thin Set Removal Mil Coatings Removal Concrete Polishing
200 SF / 19 M2 per hour 200 SF / 19 M2 per hour 50 SF / 5 M2 per hour 300 SF / 28 M2 per hour



STI Diamond Systems for the Prep/Master® Jr.
Polished Concrete  Terrazzo Polishing
EGT Diamond System
Dry Polishing
CLC diamond system
Wet-Dry Polishing
Terrazzo Polishing

Main Features of the
P/M Jr.

Prep to Polish with P/M Jr.
Time Lapse - 200SF in 2.5 Hours!

How to Disassembly &
Reassemble the P/M Jr.

P/M Jr. Machine Manual
Download Machine Manual
P/M Jr. Sales Flyer
Download Sales Flyer
P/M Jr. Specification Sheet
Download Spec Sheet