3M Cloth Belt 340D, 3 in x 21 in 60 X-weight, (10/Carton) Case of 50

• 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 is designed for durability and high performance. This model features a heavyweight cloth backing that stands up to tough, high-production environments, ensuring long-lasting use.

Ideal for professionals, this belt is an open coat premium grade aluminum oxide abrasive that resists loading and works well on both wood and metal surfaces. The 3 in x 21 in size fits many standard sanding tools.

Durable Heavyweight Backing

The heavyweight cloth backing on the 3M 340D belt provides excellent durability. This backing supports aggressive stock removal while maintaining belt integrity during extended use.

Its resin bond construction withstands high heat and pressure, which means the belt lasts longer even under demanding sanding conditions. This backing also allows the belt to be washable for repeated use.

Premium Aluminum Oxide Abrasive

This belt uses premium aluminum oxide abrasive grains that cut fast and last longer. The 60 X-weight grade ensures a balance between aggressive cutting and belt life.

Aluminum oxide is a popular choice for both woodworking and metalworking, making this belt versatile. It works well on ferrous alloys and soft woods, providing consistent sanding results.

Optimal Belt Dimensions Included

The 3 in x 21 in dimensions make this belt suitable for a variety of sanding tools, including wide belt sanders, edge sanders, and portable belt sanders. This size fits many common industrial applications.

These dimensions allow for sanding flat surfaces, edges, and even blending wood pieces like cabinet doors. The belt’s size supports both precision and broad sanding tasks efficiently.

Convenient Pack Size Case

This product comes in a case of 50 belts, making it ideal for high-volume users. The pack size ensures you have enough belts on hand for continuous work without frequent reordering.

Each carton contains 10 belts, allowing for easy inventory management and distribution. This format suits industrial settings where consistent supply and quick replacement are important.