Buying Guide for PCD Cup Grinding Wheels

PCD cup grinding wheels are essential tools for demanding surface preparation and coating removal tasks. They are designed to be used on portable equipment such as angle grinders and are more flexible compared with floor grinders. Featuring polycrystalline diamonds (PCD), these cup grinding wheels are excellent at efficiently removing tough coatings such as epoxy, adhesives, and paint from concrete surfaces. They are ideal for preparing surfaces for new coatings by grinding away old layers, uneven spots, and contaminants, ensuring a smooth and clean base.

5 things you may need to know

When buying PCD cup grinding wheels, there are five things you may need to know to ensure you make the best choice for your specific needs.

1. What is PCD?

In the diamond tools industry, PCD stands for Polycrystalline Diamond. PCD is a synthetic diamond product that is made by fusing together diamond particles under high pressure and high temperature, creating an extremely hard and durable material.

Featured for their extreme hardness, durability, and thermal conductivity, PCD tools are highly effective at removing tough floor coatings like epoxy, paint, adhesives, and other materials. They are designed to provide aggressive cutting action, quickly and efficiently stripping coatings from concrete surfaces.

2. PCD structure & size

3. Diameters

The diameter of the PCD cup grinding wheels determines the area it can cover and its suitability for different types of grinding machines. Common diameters range from 100mm(4″), 115mm(4.5″), 125mm(5″), 180mm(7″), to 230mm(9″), with larger diameters generally providing faster material removal over larger surface areas.

4. Connections

5. PCD only or PCD combined with sacrificial segments

Similar to PCD concrete grinding diamonds, you are optional to choose the diamond cup wheels with PCD only or PCD combined with sacrificial segments. The difference is that the PCD cup grinding wheels only have one rotation direction. Because the angle grinders generally have only one direction of rotation – clockwise. The common sacrificial segment types are arrow and bar. They can share the pressure of the machine, limit the cutting depth, and protect the concrete floor when removing the floor coatings.

PCD cup grinding wheels

We provide several sizes of PCD cup grinding wheels for floor coating removals, they are 100mm, 125mm, and 180mm. We will continue to add more other types of PCD grinding cup wheels in the future.

100mm(4″) floor coating removal cup wheels

The classic 100mm PCD cup grinding wheels are equipped with 5 pcs of quarter-round PCDs.

125mm(5″) floor coating removal cup wheels

125mm PCD cup grinding wheels are more popular than other sizes due to their versatile and effective performance across a range of applications. The 125mm diameter strikes a balance between maneuverability and surface coverage, making these wheels suitable for both detailed work and larger surface areas.

180mm(7″) floor coating removal cup wheels

We also provide several 180mm large PCD cup grinding wheels, which are designed for use with heavier grinders and are ideal for tackling more demanding surface preparation tasks. The larger 180mm diameter offers an extended grinding surface, making it highly effective for efficiently covering large areas and handling extensive coatings removal.

OEM service

We offer additional services for painting and laser engraving.

For end-users such as contractors, most do not require customized painting colors or logo engraving. In such cases, we proceed with standard painting and engraving procedures. However, most resellers seek to enhance brand visibility and recognition by customizing painting colors and engraving logos on tools.

Painting colors

Here we sort a series of our general painting colors for your reference. You can choose the color from the chart or customize other painting colors by providing us with the code of Pantone colors or others

Generally used colors for Xpert Diamond Tools

Red	A001	A002	A003	A004
Orange	B001	B002
Yellow	C001
Green	D001	D002	D003
Blue	E001	E002	E003
Brown	F001	F002	F003
Purple	G001
Black	H001 (Bright Black)	H002 (Matte Black)
Grey	J001	J002(Silver)
White	K001

Laser engraving

For PCD cup grinding wheels, you can generally engrave much more information compared to concrete grinding diamonds. This includes details such as the logo, diamond grits, bond types, rotation direction, connection, RPM, safety icons, and more.

Regarding the bond, you can choose between bond codes or floor codes. Bond codes are directly related to the tools, while floor codes are related to the hardness of the floor. Both methods are utilized by our customers. If not specified, we typically engrave the bond codes.

Packaging

In general, you needn’t worry about packaging arrangements as we handle it entirely on your behalf. When it comes to packaging, there are two primary considerations: box material and quantity per box.

Box materials

We offer three types of packing materials: the green hard box, the brown hard box and the white box. The green hard box is sturdier than the brown box, yet some customers prefer the brown option due to concerns about material wastage and environmental impact.

Quantity per box

Unlike the floor grinding shoes, which are packaged with multiple pieces per box, our PCD cup grinding wheels are individually packed, with one piece per box. Each box is square-shaped and comes in various sizes to accommodate the different diameters of the cup wheels. This specialized packaging ensures that each PCD cup grinding wheel is protected during transport and storage, maintaining its quality and performance.

Payment methods and terms

Regarding the payment process for PCD cup grinding wheels, here are three key points:

• Currency: We accept payments in various currencies,  including USD, EUR, RMB, and others.
• Payment Methods: Our supported payment methods include T/T (bank transfer) and Credit Cards.
• Payment Terms: For small orders, we require 100% payment in advance due to the relatively small amount. Splitting payments into multiple installments may incur additional bank fees. For large orders, we accept 70% payment in advance to initiate the order, with the remaining 30% balance due before shipment.

Furthermore, in support of our customers’ testing needs, we offer a 3% discount on sample (trial) orders. This discount will be reflected on the Proforma Invoice (PI).

Lead time

Lead time depends on various factors, primarily influenced by product type and order quantity. For PCD cup grinding wheels, we maintain a diverse inventory of different blank cups designed for different angle grinders, like Hilti, Tyrolit, and more. Consequently, orders for these commonly used tools can be expedited.

However, if you require customized tools or those not previously manufactured, initial production may take longer. Subsequent orders typically enjoy faster processing as we become more acquainted with your specifications.

Sample orders are typically shipped within 7-10 days. Regarding your orders, we strive for prompt delivery. But for your side, you need to plan a reasonable purchasing plan before your tools run/sell out, considering the production period and transportation time.

For urgent small orders, please contact us, and we can prioritize your tool production.

Anyway, we’ll provide an estimated lead time once your order details (including type and quantity) are confirmed.

Shipping methods

For delivery, there are five main shipping methods: Express, Air Freight, and Sea Freight are the most commonly used, while Rail and Truck are typically employed for destinations in Central Asia, Russia, Belarus, etc.

These shipping methods differ in various aspects. Let’s examine the main differences among Express, Air Freight, and Sea Freight.

	Express	Air Freight	Sea Freight
Price	High	Medium	Low
Time	Fast	Medium	Slow
Suit Weight	Light weigh(such as the sample order)	Medium weight	Heavy weight
Method of Receiving Your Goods	Door-to-door	Pick up the goods yourself or Door-to-door service	Pick up the goods yourself or Door-to-door service

The shipping rates are tiered based on weight, with heavier shipments costing less per kilogram. If your order is close to qualifying for a lower rate by adding a bit more weight, we’ll notify you and confirm if you’d like to add more items to benefit from the better shipping rate.

Upon receipt of our proforma invoice, we will complete the shipping method, estimated transportation duration, and fees tailored to your specific order. In addition to reviewing the product items, kindly verify this section with us as well.

Cautions

How to use

• Follow the instructions provided in the machine handbook carefully.
• Never fit a diamond dish/cup wheel that is too loose or too tight on the flange.
• Tighten only with the tool supplied with the machine.
• Ensure the wheel is properly gripped to prevent slippage, but do not tighten with excessive force. Never use a hammer.
• Keep flanges and screw threads clean and free of burrs and rust.
• Replace distorted or damaged flanges before fitting the wheel.

For your safety

We recommend using the following personal protective equipment:

• Eye protection
• Ear protection (ear sets)
• Hand protection (gloves)
• Lung protection (dust mask or respirator)

Important note

Never remove the protective machine guard and make sure it is properly adjusted to deflect debris away from you. Ensure that no other person is at risk, especially near the machine while it is in operation.