An Aluminum Oxide Raised Hub Grinding Wheel functions as an abrasive tool that removes material from surfaces through high-speed rotational contact. The aluminum oxide abrasive grains interact with the work surface to cut, grind, and shape material by controlled abrasion. As the wheel rotates, the raised hub provides clearance and positioning support, allowing stable mounting and effective contact with the target surface during operation. The grinding action occurs when abrasive particles engage the surface, gradually removing layers to achieve the desired shape, finish, and edge condition.Attributes:• Fits 114.3 mm, 177.8 mm, and 228.6 mm (4 1/2 in, 7 in, and 9 in) grinders.• Used on electrical or air-powered right-angle or vertical shaft grinders.• Used for rough grinding applications such as grinding/smoothing weld seams and cleaning metal surfaces.Applications: An Aluminum Oxide Raised Hub Grinding Wheel is used for removing material and shaping surfaces through abrasive rotation during grinding and surface preparation operations.