Planetary Concrete Grinders

Planetary concrete grinder by Husqvarna, Toolsa and Barikell — design and how it works

A planetary concrete grinder has a main disc fitted with, typically, 3 counter-rotating satellites — smaller plates carrying diamond segments or pads, spinning around their own axis and around the axis of the machine at the same time. This lets it level a strip of floor 500–800 mm wide in a single pass, without leaving marks, at a motor rating of 5–11 kW (most often three-phase 400 V), and it performs best on floors above 100–200 m².

At NORWIT.PL we stock planetary grinders primarily from Husqvarna Construction, Toolsa and Barikell — the first two are on the Husqvarna Construction and Toolsa brand pages. The category is part of the grinding and polishing department.

Types of planetary concrete grinders — drive, size and the "grinder-polisher" concept

Planetary machines are told apart mainly by drive type and by the number and size of their satellites.

For smaller surfaces and edges, a single-disc concrete grinder is the better fit. The term grinder-polisher refers, in practice, to the same planetary machine, just fitted with different tooling: segments at grit 16–70 handle grinding, while resin pads at grit 400–3000 combined with a lithium hardener turn the same unit into a polisher.

Diamond segments — metal bond and resin bond

A segment with a metal bond — a tool with diamond grit set in metal — works at a grit of usually 16–120 and strips and levels concrete. A pad with a resin bond carries its grain in flexible resin and takes over from around grit 200 upward, producing gloss. Bond choice runs opposite to what intuition suggests: hard concrete needs a soft bond (starting at grit 16–30), average concrete needs a medium bond (grit 30–50), and soft, abrasive concrete needs a hard bond (grit 40–70). A full range of grits is available in polishing and grinding accessories.

Drive, motor power and dust extraction — wet and dry grinding

Electric planetary grinders, three-phase 400 V, rated 5–11 kW, with a working width of 500–800 mm, suit halls with access to power, while an engine drive (petrol or diesel) is chosen where power isn't available or work takes place outdoors. Dry grinding requires a class M or H industrial vacuum rated at least 200–400 m³/h, under the occupational exposure limit for crystalline silica dust of 0.1 mg/m³ — suitable models are in the vacuums for grinders category. Wet grinding, where water binds the dust at the plate, is used mainly for polishing and on hard outdoor surfaces, but it requires collecting the resulting slurry.

Polishing to a gloss finish (terrazzo) and the price of a planetary grinder

Terrazzo — a floor made from decorative aggregate and a cement binder — is polished to a mirror finish using segments and pads at a grit of roughly 100 to 3000 over 6–8 passes, with a lithium hardener (a silicate-based impregnator) applied in 1–2 coats, which closes the pores in the concrete and raises its resistance to abrasion.

Price is driven mainly by drive type, working width and motor power. Electric machines rated 5–11 kW (400 V) with a working width of 500–800 mm typically cost from a dozen or so thousand up to several dozen thousand złoty, while heavy engine-driven units for floors above 1000 m² sit at the top of that range. Consumable segments, pads and hardener add to the running cost. Current prices for Husqvarna Construction, Toolsa and Barikell models are listed on the product pages.

Frequently asked questions about planetary concrete grinders

Why buy a planetary concrete grinder at NORWIT.PL

We focus on professional concrete floor processing: our range of planetary grinders comes primarily from Husqvarna Construction, Toolsa and Barikell — no marketplace substitutes. We advise on machine size, segment bond for the concrete's hardness, and drive choice for your working conditions. For smaller surfaces and edges we recommend single-disc concrete grinders, and segments, pads and chemicals are in polishing and grinding accessories. Orders are placed online, with nationwide shipping.