STI Lavina L20S7 Electric Grinder

STI Lavina L20S7 Electric Grinder

STI Lavina L20S7 Electric Grinder is a compact planetary floor grinder engineered to deliver professional concrete grinding, polishing, epoxy preparation, glue and coating removal, and other surface-preparation applications for medium-sized projects. As the latest addition to the Lavina S7 lineup, it combines a 20-inch working width with the advanced Series 7 frame design and a sealed, dust-proof grinding head for superior performance, longer service life, and reduced maintenance. Its completely redesigned chain-driven planetary drive, stronger timing belt, upgraded shafts, seals, bearings, lighter timing pulleys, and two-piece aluminum belt housing with an inspection cover improve power transmission, reliability, and maintenance efficiency. Powered by a 7.5 HP (5.5 kW) motor operating on 200–240V single- or three-phase power, the grinder features three 9-inch counterclockwise rotating tool holders with adjustable speeds from 400 to 1,100 RPM and grinding pressure ranging from 242 to 309 lbs.

Designed to maximize productivity and operator comfort, the L20S7 features a redesigned frame for easier tool changes, a new integrated weight system for faster pressure adjustments, an ergonomic multi-position handle, and rubber bushings at the grinding head attachment points to reduce vibration during operation. Additional features include a 2.1-gallon water tank, a 50 mm vacuum hose port for effective dust collection, and a compact yet durable design measuring 86 × 32 × 46 inches. Weighing 518 lbs, the Lavina L20S7 S7 Series grinder provides contractors with an efficient, reliable, and easy-to-operate solution for commercial and residential concrete grinding and polishing applications.

Lavina L20S7 Electric Grinder Main Features

• 7.5 HP (5.5 kW) electric motor
• 200–240V, single- or three-phase, 50–60 Hz
• 20″ working width
• Planetary grinding system
• Lavina S7 Series design
• Sealed, dust-proof grinding head
• Redesigned chain-driven planetary drive
• Stronger timing belt
• Upgraded shafts, seals, and bearings
• Lightweight timing pulleys for improved power transmission
• Two-piece aluminum belt housing with inspection cover
• Three 9″ counterclockwise rotating tool holders
• Variable tool holder speed: 400–1,100 RPM
• Grinding pressure: 242–309 lbs
• Redesigned frame for easier tool changes
• Adjustable integrated weight system
• Ergonomic multi-position handle
• Rubber bushings reduce vibration
• 2.1-gallon water tank
• 50 mm vacuum hose port

STI Lavina L20S7 Electric Grinder Specifications