Stone Grinding Wheel for Angle Grinder: 7" X 1/4 X 7/8" Hubbed Grinding Wheel FAQ — Specifications, Ordering and Support

Whether you are sourcing a stone grinding wheel for angle grinder applications or evaluating this 7-inch hubbed grinding wheel for metal fabrication work, the questions below cover the key specifications, grain types, safety ratings and ordering terms based on the confirmed product information.

Q1: What is a stone grinding wheel for an angle grinder, and is this product suitable for stone?

A depressed-center (hubbed) grinding wheel mounts directly on a standard angle grinder arbor and is used for grinding, deburring and surface conditioning. The abrasive grains in this 7" X 1/4 X 7/8" wheel are Brown Aluminum Oxide, which is optimized for ferrous metals, steel, iron and stainless steel. Silicon carbide is the grain type suited for hard non-metallic materials such as pig iron or stone; this specific wheel (item DAG18006022) is for metal applications — polishing and grinding metal welds — not stone cutting.

Q2: What are the exact dimensions and key specifications of this hubbed grinding wheel?

Q3: What abrasive grain types are available, and which should I choose?

The product documentation describes four main grain options used across the range:

• Brown Aluminum Oxide — Hard, durable grain ideal for steel, iron and other ferrous metals. Provides sharp initial cuts and excellent cost-effectiveness. This is the grain used in the 7" X 1/4 X 7/8" hubbed wheel.
• White Aluminum Oxide — Offers fast cutting speed and long service life; best suited for stainless steel and harder steels.
• Silicon Carbide — Very hard, very sharp, and fast-cutting. Suitable for hard materials such as pig iron or stone.
• Silicon Carbide / Aluminum Oxide Mixture — Provides ideal grinding for aluminum and other soft alloys with fast, consistent cutting speeds.

For the 7" hubbed grinding wheel (DAG18006022), the confirmed abrasive is Brown Aluminum Oxide, making it well-matched for ferrous metals, steel, iron and stainless steel fabrication work.

Q4: What materials can this 7-inch hubbed grinding wheel be used on?

Based on the product documentation, this wheel is suitable for:

• All ferrous metals
• Iron
• Steel
• Stainless steel
• Rebar
• Iron pipe
• Bar stock
• Metal tubing

Typical use environments include tank fabrication, power plant maintenance and repair, and welding/metal fabrication shops. The disc is described as an angle grinder wheel for metal applications, specifically for polishing and grinding metal welds.

Q5: What certifications does this grinding wheel hold, and what safety reinforcement does it have?

The product carries ISO 9001, ISO 14001 and MPA EN12413 certifications. The discs comply with the EN12413 international standard for safety requirements for bonded abrasive products. Each wheel features 3 full-diameter high-tensile fiberglass reinforcements for maximum safety and structural strength under demanding working conditions. The maximum circumferential speed is 80 m/s.

Hebei Double Goats Grinding Wheel Manufacturing Co., Ltd. also holds ISO 9001, ISO 14001, OHSAS 18001 and MPA EN12413 certifications at the company level.

Q6: What are the ordering terms, minimum order quantity and lead time?

For volume pricing, custom grit combinations or other specifications, contact Hebei Double Goats Grinding Wheel Manufacturing Co., Ltd. directly.

Q7: How is the product packaged and shipped?

The standard packaging format is: shrink wrap → inner box → carton → enhanced pallet. The company's daily supply capacity is up to 300,000 PCS, supporting large purchase orders within the stated delivery window.

Q8: Is this wheel compatible with a 9-inch angle grinder or only a 7-inch grinder?

The product documentation states the grinding discs are "appropriate for hand-held angle grinders" and specifically references 9-inch angle grinders as a compatible tool type in addition to standard 7-inch machines. The 7/8-inch arbor bore is a common standard fitting. Always verify your grinder's arbor size and maximum RPM against the wheel's 80 m/s rating before use.