3M Cloth Belt 340D, 80 X-weight, 4 in x 132 in, Film-lok, Single-flex, Case of 25

• Heavyweight cloth backing provides durability for high-production environments
• Open coat construction provides improved cut on all woods and helps prevent loading
• Premium aluminum oxide offers increased cut-rate and abrasive life
• Resin bond construction withstands high heat and pressure for longer service life
• Washable backing enables repeated use on high-loading substrates such as pine

3M Cloth Belt 340D is an open coat premium grade aluminum oxide cloth belt that provides durability for aggressive stock removal, resists loading, and is suitable for a variety of applications on wood and metal. This belt is recommended for wide belt sanding, edge sanding, or portable belt sanding.

Fast-cutting aluminum oxide abrasive grains are resin-bonded to a durable cotton cloth backing to provide continuous cut and long-life. Our open coat and load-resistant coating make this belt particularly favorable for sanding soft woods. Additionally, the washable backing is suitable for high production environments where the belt may need washing at intervals to remove soft wood resin or pitch buildup.

Aluminum oxide mineral is a popular choice among industrial professionals because of its cut-rate, durability, and long life. It can be used on a wide variety of materials in both woodworking and metalworking, including ferrous alloys, and is the most commonly used industrial abrasive. The abrasive particles are adhered to the cloth backing with resin, creating a strong bond that withstands high heat and pressure.

Abrasive belts come in many different widths and lengths and are used on a variety of different belt sanding tools for many different applications on both wood and metal. At 3M we offer a broad selection of belts to fit most any industrial belt sander. Wider belts are used with wide belt sanders to dimension or finish wood panels, smooth rough cut edges of metal sheets, or add a grain pattern to stainless steel sheets. Medium-width belts fit onto edge sanders for sanding flat, narrow surfaces such as panel edges; and narrow belts are used with portable belt sanders for sanding or blending wood pieces such as cabinet doors.

Belts come with various splices that join the belt ends. A film media splice achieves a secure bond with a joining film that minimizes chatter marks, ensures a smooth running belt, and produces consistent finishing results. A sine wave splice is constructed of interlocking fingers that enable the splice to travel smoothly over contact wheels, reduce hinging, and provide added strength to the joint area. Sine wave splices are typically used for coarser grades and wide belts as well as on belts that are going to be washed.

Trusted 3M Cloth Belt

The 3M Cloth Belt 340D offers reliable performance with its heavyweight cloth backing. This backing ensures durability, making it ideal for high-production environments where long-lasting belts are essential.

Designed as a premium grade belt, the 340D model is perfect for aggressive stock removal tasks. Its construction supports a variety of sanding applications on both wood and metal surfaces.

Effective Open Coat Construction

This belt features an open coat design that improves cutting efficiency on all types of wood. It also helps prevent loading, which keeps the belt working smoothly without clogging during use.

Thanks to this construction, the belt is especially suited for sanding soft woods like pine. It maintains consistent performance even in demanding conditions where resin buildup is common.

Precise Size And Format

The belt measures 4 inches by 132 inches, fitting a wide range of belt sanding tools. This size makes it versatile for various sanding tasks, from wide belt sanding to edge and portable belt sanding.

Its Film-lok single-flex format ensures a secure splice that reduces chatter marks. This results in a smooth-running belt and consistent finishing quality across different applications.

Premium Abrasive Grade

Equipped with 80 X-weight aluminum oxide abrasive grains, this belt delivers fast cutting and long life. The premium aluminum oxide mineral is known for its durability and effective cutting on wood and metal.

The abrasive grains are resin bonded to the cloth backing, which withstands high heat and pressure. This bond enhances the belt’s service life even under tough sanding conditions.

Convenient Case Pack

This product comes in a case of 25 belts, providing a ready supply for continuous work without frequent reordering. The pack size supports high-production environments where belt changes are common.

The washable backing allows repeated use by cleaning off resin or pitch buildup. This feature extends the belt’s usability, especially when sanding soft woods like pine.