The Bernardo Metal Polishing Set Ø 200 x 20 mm is a professional abrasive consumable available from Krollit, an official Bernardo distributor since 2007.
- Disc diameter: 200 mm
- Thickness: 20 mm
- Inner bore: 16 mm
- Number of pieces: 4
- Disc material: Pressed technical cotton
- Compatibility: Bench grinder
Who uses the Metal Polishing Set Ø 200 x 20 mm and for what purpose
Workshops, carpentry shops, and body shops use the Metal Polishing Set Ø 200 x 20 mm for sanding, finishing, and surface preparation of materials and grits specified in the product details.
Its place in the Bernardo range
The Bernardo Metal Polishing Set Ø 200 x 20 mm is part of Bernardo's range of abrasive consumables, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.
Krollit Logistics and Support
Shipping within 3-5 business days from Krollit warehouse for spare parts and accessories. Italian customer support available for technical documentation and compatibility verification with your machine. Krollit has been an official distributor since 2007.
Who is the Metal Polishing Set Ø 200 x 20 mm for
The metal polishing set Ø 200 x 20 mm is recommended for the following professional profiles:
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Workshops, carpentry shops, and body shops: sanding, finishing, and surface preparation in the indicated grits.
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Users with compatible machines (diameter/attachment): original replacement part for the machines described.
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Materials outside product specification: verify the grit and supported material to avoid damaging the workpiece.
Technical specifications
| Disc diameter |
200 mm |
| Thickness |
20 mm |
| Inner bore |
16 mm |
| Number of pieces |
4 |
| Compatibility |
Bench grinder |
| Disc material |
Pressed technical cotton |
Frequently Asked Questions
What is this polishing wheel set used for?
It is used with bench grinders and flexible wheels for sanding, polishing, or finishing operations on the specific material indicated in the model.
The choice of model depends on the wheel diameter, bore, polishing material (stainless steel, aluminum, wood, plastic), and the type of application. Compatible with bench grinders with a wheel bore of Ø 16 or Ø 20 mm.
Which grit to choose?
K36-K60 for aggressive roughing, K80-K120 for intermediate sanding, K150-K240 for pre-painting finish, K320+ for mirror surfaces.
The most common mistake is skipping intermediate grits: going from K60 to K240 leaves deep marks that cannot be removed. Always proceed in consecutive steps (e.g., K80 → K120 → K180).
What materials is it compatible with?
The model indicates the specific material (stainless steel, aluminum, wood, plastic). Using the correct abrasive optimizes durability and work quality.
For stainless steel, use abrasives with a suitable binder to prevent overheating and deformation. For aluminum, prefer abrasives with reduced loading. For wood, normal corundum is the standard choice.
How many pieces does the package contain?
The number of pieces is indicated in the model (e.g., 4 or 5 or 6 pieces). Multiple packages allow for managing replacements without machine downtime.
For intensive use, it is advisable to keep at least 2-3 packages of the most used grits in stock, so as not to interrupt production when a belt/sleeve wears out.
How to store abrasives?
Store in a dry place, away from humidity that can alter the binder. Keep them in their original packaging until use to preserve grit and adhesive.
Humidity particularly damages self-adhesive pads and paper-backed abrasive belts. Ideal temperatures: 18-25 °C, relative humidity 40-60%. Store in a closed and ventilated area.
