Frequently asked questions

The choice depends on the processing material, type of operation and instrument:

• Material: for metal use wheels marked A (aluminum oxide), for stone/concrete - C (silicon carbide)
• Diameter: should match your grinder (115, 125, 150, 180, 230 mm)
• Thickness: 1.0-1.6 mm for precision cutting, 2.0-3.0 mm for heavy duty work
• Speed: check that the maximum speed on the wheel is higher than the speed of your tool

Read a detailed guide on choosing abrasives in the Knowledge Portal.

Our products are designed to process a wide range of materials:

• Metals: steel, cast iron, stainless steel (INOX), aluminum, non-ferrous metals
• Building materials: stone, concrete, brick, tile
• Ceramics: tiles, porcelain stoneware, porcelain

For each material there are specialized wheels with the optimal composition of abrasive and bond. Pay attention to the marking on the packaging.

Main differences:

• Cutting wheels (thickness 1.0-3.0 mm) - designed for cutting metal, stone and other materials. Thin, fast and clean cut.
• Grinding wheels (thickness 6.0-8.0 mm) - for grinding, deburring, preparing surfaces for welding. Thicker, withstand lateral load.

Important: never use a cutting wheel for grinding - it is dangerous!

We produce wheels of all standard sizes:

• Diameters: 115, 125, 150, 180, 230, 300, 350, 400 mm
• Thickness of cuttings: 1.0, 1.2, 1.6, 2.0, 2.5, 3.0 mm
• Strip thickness: 6.0, 6.4, 8.0 mm
• Mounting hole: 22.23 mm (standard), 25.4 mm, 32 mm

We also manufacture custom-sized wheels for industrial customers.

The expiration date is indicated on each circle. Usually:

• Cutting and grinding wheels: 3 years from date of manufacture
• Flap Discs (CLT): 5 years
• Velcro grinding wheels: 3 years

Storage conditions: dry room, temperature +5...+30 degrees, avoid moisture and direct sunlight. Circles with an expired date are prohibited from use!

The labeling contains all the necessary information for safe use:

• Abrasive type: A (aluminum oxide) - for metal, C (silicon carbide) - for stone
• Grit: The number after the letter (e.g. A24 is coarse, A60 is fine). The higher the number, the finer the grain.
• Bond hardness: Latin letter (R, S, T) - from soft to hard
• Type of binding: BF (Bakelite on fabric backing) - the most common
• Dimensions: diameter × thickness × fit (e.g. 125×1.0×22.23)
• Max RPM: A number that must not be exceeded
• Production date and expiration date

Read more about labeling in the Knowledge Portal.

Grain size (grit) determines the cleanliness of the finish and the speed of material removal:

• P24–P40 (coarse grain): fast removal of large layers of material, rough grinding, cleaning of welds
• P60–P80 (medium grain): general purpose sanding, surface preparation, paint and rust removal
• P100–P120 (fine grain): finishing metal, preparation for painting
• P150–P240 (fine grain): finishing, sanding wood, interlayer sanding
• P320+ (very fine grain): polishing, finishing before coating

Rule: start with coarse grit and gradually move to finer grit for best results.

Exceeding the maximum rotation speed can lead to wheel breakage and serious injury.

• Always check that the maximum speed on the wheel is HIGHER than or EQUAL to the speed of your tool.
• For example: a wheel marked 12,250 RPM can be used on a grinder with a maximum speed of 11,000 RPM
• Never remove the protective cover from the tool.

The maximum speed is always indicated on the wheel label and in the tool instructions.

Mandatory personal protective equipment (PPE):

• Safety glasses or mask - protect eyes from sparks and particles
• Protective gloves - protect hands from cuts and burns
• Protective clothing - tight, without loose elements
• Respirator - when working with stone, concrete (dust)
• Headphones or earplugs - for prolonged work

Also: use a protective cover on the grinder, work in a well-ventilated area.

Our products meet the highest safety standards:

• MPA Hannover (Germany) - independent abrasive safety testing
• EN 12413 - European standard for bonded abrasives
• ISO 9001:2015 - quality management system
• oSa - Organisation for the Safety of Abrasives certification
• FEPA - membership in the European Federation of Abrasives Manufacturers

Read more about certificates on the Certificates page.

Never use a damaged wheel! Even a small crack can lead to breakage during operation.

• Before installation, visually inspect the wheel for cracks, chips, deformations
• Do a "sound test" - tap the circle lightly, it should make a clear ringing sound
• Dispose of the damaged wheel safely.
• If you find a factory defect, contact us for a replacement.

Correct installation is the key to safe operation:

• Turn off the tool and unplug it before changing the wheel.
• Check compatibility: the wheel diameter and mounting hole must match the tool
• Check RPM: the maximum speed of the wheel should be higher or equal to the speed of the grinder
• Install the flanges: the outer flange should press the circle tightly against the inner one
• Tighten the nut: by hand or with a wrench, without excessive force
• Install the protective cover before turning on.
• Idle for 30 seconds at maximum speed before starting work.

Minimum volumes depend on the type of client:

• Retail buyers: no restrictions, buy from 1 pc. from our partners (see Where to buy )
• Small wholesale (services, teams): from 50 pcs. or 2,000 UAH
• B2B partners: from 500 pcs. or 10,000 UAH
• Distributors: individual conditions from 50,000 UAH

We deliver throughout Ukraine and abroad:

• Nova Poshta - throughout Ukraine, 1-2 days
• Delivery / Meest - alternative carriers
• Pickup - from a warehouse in the Kharkiv region
• Own delivery - in Kharkiv and the region for large orders
• International shipping - for export customers (DHL, UPS, by sea)

Free delivery in Ukraine for orders over UAH 30,000.

Shipping terms:

• Stock items: 1-2 business days after payment
• Made to order: 5-10 business days
• Urgent: same day when ordered and paid before 12:00
• Private Label: 2-4 weeks depending on volume

Please check with the manager for current product availability.

• Cashless payment - for legal entities (invoice)
• Payment to a FOP card - for private entrepreneurs
• Cash on delivery - Nova Poshta (for orders up to 10,000 UAH)
• Cash - upon pickup from the warehouse

For regular partners , a payment deferral of up to 30 days is available. We provide a full package of accounting documents.

Yes, we guarantee the quality of each product:

• Quality assurance: all products undergo quality control at the factory and comply with EN 12413 standards
• Factory defect: if a defect is found, a free replacement will be provided. Please contact us with a photo of the defect and the batch number.
• Complaints: reviewed within 5 business days
• Shelf life: quality is guaranteed until the expiration date under proper storage conditions

To file a complaint, please contact us via Feedback or by phone.

We are always open to cooperation with reliable partners:

• Fill out the application on the B2B Partners page
• Or contact the sales department: +38 (057) 766-36-28
• Email: info@novoabrasive.com

We will review your application within 24 hours and provide a personal offer with terms of cooperation, prices, and marketing support.

Yes, we offer a full Private Label service:

• Production under your brand - your logo, design, name
• Individual packaging design - development or adaptation
• Minimum batch: from 5,000 pcs. of one size
• Full certification - MPA, EN 12413 under your brand

Already 50+ brands in 35+ countries around the world trust us with their production. More details on the B2B Partners page.

For online stores we offer:

• Dropshipping - we send the goods to your customers
• Wholesale prices - from the first purchases
• Photos and content - ready-made materials for your website
• Integration - uploading balances and prices via API
• Marketing support - banners, promotional materials

Contact us to gain access to the partner portal.

Yes, we have experience in participating in public procurement:

• ProZorro: we participate in tenders for the supply of abrasive materials
• Documentation: we provide a full package of tender documentation (certificates, technical specifications, test reports)
• Large volumes: production capacities allow for large-scale orders
• Fixed prices: possibility of fixing prices for the contract period

To prepare a tender offer, please contact the sales department: info@novoabrasive.com