3M Rubber Slotted Expander Wheel 77722, 3 in x 3 in x 5/8 in-11 Internal

• More consistent performance than pneumatic wheels
• Radiused edges reduce transition lines
• Soft 25-durometer rubber helps to create a fine finish
• Use 3M Wheel Adapter Kit to mount on 3M Inline Sander or 3M Match & Finish Tool
• Uses centrifugal force to grip the abrasive belt

The 3M Rubber Slotted Expander Wheel utilizes centrifugal force to grip abrasive belts while grinding. Use this wheel on a 3M Inline Sander or 3M Match & Finish Tool. It comes in three diameters and two center hole diameters.

Soft Conformable Rubber, Radiused Edges
Our 3M Rubber Slotted Expander Wheel can be mounted on a 3M Inline Sander or 3M Match & Finish Tools using a 3M Wheel Adapter Kit. We designed this wheel with soft 25-durometer rubber to keep it conformable for applications like stainless steel finishing. Radiused edges reduce transition lines as the tool makes passes across the work surface.

Centrifugal Force Is More Secure
This wheel uses centrifugal force to grip the belt rather than conventional pneumatic wheels, or tires, which rely upon the amount of air pressure they are filled with. Centrifugal force is ultimately far more efficient and consistent.

In three diameters of 3, 3.4 or 5 inches, the smaller diameter tends to obtain a tighter grade pattern and gets into tighter spaces.

Recommended Applications
Our 3M Rubber Slotted Expander Wheel is ideal for finishing stainless steel when mounted to a 3M Inline Sander or 3M Match & Finish Tool. Having mounted the expander wheel to the sander using the 3M Wheel Adapter, follow a 2-step process for finishing stainless steel, either with or without a weld:

• The coated abrasive belt 777F, 120 grit, can be used to set the grain and remove defects using the 3M Inline Sander (28339) at 3,500 rpm.
• Use our Scotch-Brite Surface Conditioning Belt, A Med, to blend the surface to a #4 finish.

3M Rubber Expander Wheel

The 3M Rubber Slotted Expander Wheel 77722 offers reliable performance with its soft 25-durometer rubber construction. This model is designed specifically for use with abrasive belts, providing consistent results on various surfaces.

Its internal design and compatibility with 3M Inline Sanders and Match & Finish Tools make it a versatile choice for finishing tasks. The 3-inch by 3-inch by 5/8 inch-11 size fits perfectly in many applications requiring precision.

Consistent Performance Benefits

This expander wheel delivers more consistent performance than pneumatic wheels by using centrifugal force to grip abrasive belts securely. This method avoids the variability caused by air pressure in traditional pneumatic wheels.

Because of this, users can expect steady results during sanding or finishing, especially when mounted on 3M Inline Sanders or Match & Finish Tools, ensuring a smooth workflow.

Soft Rubber Radiused Edges

The wheel’s soft 25-durometer rubber helps create a fine finish by conforming gently to the work surface. Radiused edges reduce transition lines, which improves the overall quality of the finish on materials like stainless steel.

This design detail is especially useful when working on delicate or detailed surfaces, allowing for a cleaner and more professional appearance after sanding.

Dimensions And Sizes

The 3M Rubber Slotted Expander Wheel comes in three diameters: 3 inches, 3.4 inches, and 5 inches. The 3-inch diameter model, as specified in the title, is ideal for tighter spaces and achieving a finer grade pattern.

Its size of 3 in x 3 in x 5/8 in-11 makes it compatible with many sanding setups, providing flexibility for different finishing needs and ensuring it fits securely on the intended tools.

Recommended Finishing Applications

This wheel is perfect for finishing stainless steel when used with 3M Inline Sanders or Match & Finish Tools. It works well with coated abrasive belts like the 777F, 120 grit, to set grain and remove defects efficiently.

Following up with Scotch-Brite Surface Conditioning Belts helps blend surfaces to a #4 finish, making this expander wheel a key component in multi-step finishing processes.