3M Cloth Belt 340D, 3 in x 21 in P100 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 performance. This heavyweight cloth backing supports high-production environments, making it a reliable choice for demanding sanding tasks.

Its premium aluminum oxide abrasive grains ensure fast cutting and long life. The 3 in x 21 in size fits many belt sanders, providing versatility across woodworking and metalworking projects.

Durable Heavyweight Backing

The heavyweight cloth backing of the 3M Cloth Belt 340D offers excellent durability. It withstands the wear and tear of aggressive stock removal, extending belt life in tough conditions.

This backing also supports the belt’s washable feature, allowing repeated use on high-loading substrates like pine. This makes it ideal for continuous use in busy workshops.

Open Coat Construction Benefits

Featuring an open coat construction, this belt reduces loading and improves cutting on all woods. This design helps maintain sanding efficiency by preventing clogging with debris.

Open coat belts like this one are especially useful for sanding soft woods, ensuring smooth finishes without frequent belt changes or cleaning interruptions.

Premium P100 X-Weight Grade

The P100 X-weight grade of this 3M Cloth Belt 340D offers a balance of aggressive cutting and long-lasting performance. It’s suitable for a variety of applications requiring fine to medium sanding.

This grade is recommended for wide belt sanding, edge sanding, and portable belt sanding, making it a versatile option for professionals working on wood and metal.

Convenient 50 Belt Carton

Sold as a case of 50 belts, this pack size supports high-volume operations. Having multiple belts on hand reduces downtime and keeps projects moving efficiently.

The 3 in x 21 in dimensions fit many industrial belt sanders, making this carton a practical choice for workshops needing consistent sanding supplies.