The BMR Floor Grinding Robot 850S is the compact model in BrightMaster Robotics' 850 series of autonomous concrete grinders, made for sites that already run their own dust extraction. It carries no onboard dust collection unit: the extraction comes from the site's external system, and that is what keeps the 850S lighter and shorter than its sibling, the 850M. It takes the laitance off concrete slabs and readies them for epoxy coatings, sealed hardeners, emery sealed hardeners, epoxy terrazzo, inorganic terrazzo and terrazzo.

Dust handling is the one deciding difference between the two models. The 850S is meant for projects where a compatible extraction setup is already in place and a compact footprint is preferred; the 850M, with its integrated 2.4 kW dust collection, is the one to choose when the machine has to collect its own dust. At 627 kg and 1,520 × 866 × 1,204 mm, the 850S is the lighter, shorter and more manoeuvrable of the pair.

Before work starts, the robot scans the floor plate with LiDAR to locate walls, columns and other structures, then plans its own route, holds its position in real time to within 5 cm and grinds without an operator steering it. Each pass covers 850 ± 50 mm with a planetary disc running at 0–2,000 rpm under 18.5 kW of grinding power. Because nobody has to push a hand-guided grinder, the crew is spared the vibration, and one pass is ground the same way as the next.

The 850S runs on a 380 VAC three-phase five-wire supply at 50 or 60 Hz and carries a 48 V / 30 Ah traction battery with a 9 km operating range; it travels at 0.5 m/s and climbs slopes of up to 15°. It is used in underground car parks, on factory and workshop floors, on warehouse slabs before coatings or hardeners, in epoxy renovations and on laboratory, sports and commercial floors — work for flooring contractors and construction teams who prepare floors by the thousand square metres. The extraction connection, grinding tooling and consumables are agreed with the quotation.

Key Capabilities

• External extraction model: No onboard dust collection unit — it works with the extraction system already on site.
• Compact 850 platform: 627 kg and 1,520 × 866 × 1,204 mm, the lighter and shorter of the two 850-series machines.
• LiDAR navigation: It locates walls and columns, plans its own path and positions itself to within 5 cm.
• 18.5 kW planetary grinding: A planetary disc at 0–2,000 rpm covers 850 ± 50 mm per pass.
• Floor preparation for coatings: It removes laitance ahead of epoxy, hardener and terrazzo floor systems.

This model is offered on a quotation basis. Configuration, accessories, integration scope and delivery schedule all change the final figure, so pricing is confirmed per project rather than listed.

Buying through Robotix Market

This unit is sourced new through established distribution channels and ships worldwide with the full manufacturer warranty. Technical support is coordinated with the manufacturer's own service network. Deployment scope, configuration, and commissioning responsibilities are agreed as part of the quotation — on-site installation is not included in the product price.