3M Cloth Belt 340D, 3 in x 21 in 50 X-weight, (5/Carton) 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, ensuring durability in demanding environments. This belt is designed for high-production use, making it a dependable choice for professionals.

Its model 340D designation highlights a premium grade that suits aggressive stock removal tasks. The belt’s construction supports long-lasting use, fitting the needs of various sanding applications.

Optimal Size And Format

This belt measures 3 inches by 21 inches, providing a versatile size for many sanding tools. The dimensions make it suitable for edge sanding, wide belt sanding, and portable belt sanding tasks.

Its format as a cloth belt ensures flexibility and strength, allowing it to conform well to different sanding surfaces. The size also supports efficient handling and precise sanding results.

Premium Grade X-weight

The 50 X-weight grade indicates a heavy-duty abrasive cloth backing that withstands tough sanding jobs. This grade is ideal for users needing a balance of durability and cutting efficiency.

With premium aluminum oxide abrasive grains, the belt delivers a fast cut rate and extended abrasive life. This makes it well-suited for sanding both wood and metal surfaces effectively.

Convenient Pack Size

Sold in a case of 25 belts, this pack size supports high-volume operations and reduces downtime. Having multiple belts on hand ensures continuous workflow without frequent reordering.

The inclusion of 5 belts per carton within the case allows for easy storage and distribution. This packaging suits industrial settings where consistent supply is critical.

Durable Construction Features

The belt’s resin bond construction resists heat and pressure, extending service life during heavy sanding. Its open coat design helps prevent loading, especially when working with soft woods.

Additionally, the washable backing allows repeated use by removing resin or pitch buildup, making it practical for high-production environments. This feature enhances the belt’s longevity and performance.