3M 7000045975 | 9041 Roto Peen Assembly Kit

Description

The 3M 7000045975 Roto Peen Assembly Kit is a small, portable kit designed for captive shot peening, repair, and maintenance of metal components. The kit includes an Almen strip holder, two TC-330 roto peen flap assemblies in various sizes, and mandrels 7210/7211, which cover both large flat areas and tighter geometries. The kit, which requires a compatible rotary tool as well as standard Almen strips and gauges (not included), provides controlled surface hammering via bonded tungsten carbide shot on flexible flaps. The 3M 9041, designed primarily for aerospace and precision maintenance applications, simplifies localized peening tasks, increases fatigue resistance, and eliminates the need for large stationary peening stations when portability and repeatability are required.

Product Features and Benefits

Complete captive peening kit for field use

The 3M Roto Peen Assembly Kit contains an Almen strip holder, two TC-330 flap assemblies, and mandrels for performing localized peening without loose media; it is ideal for in-place maintenance and repair.

Two flap sizes for application flexibility

Smaller (9/16" x 1-1/4") and larger (1" x 2") flap assemblies enable precise peening on complex geometries or efficient coverage of large surfaces.

Tungsten carbide shot bonded to flaps

Durable bonded steel/tungsten carbide shot provides consistent peening intensity and a cleaner process than loose-shot methods, reducing containment needs.

Mandrels built for reliable mounting

Mandrels 7210 and 7211 hold flaps in common rotary tool collets, ensuring concentric rotation and consistent peening performance within recommended RPM ranges.

Portable alternative to stationary shot peening

The 3M 9041 compact assembly kit allows for captive shot peening on fixtures, welded assemblies, and field repairs where a full peening cabinet is impractical.

Frequently Asked Questions

What is roto peening, and when is it used?

Roto peening propels bonded shot against metal to induce compressive surface stress and improve fatigue life.

Is this kit suitable for aerospace repair?

Yes, the 3M 7000045975 kit is designed for aerospace maintenance and small-area production peening tasks when used with proper Almen measurement.

What tools and consumables are required but not included?

A compatible die grinder/rotary tool, Almen strips, and Almen gauge are required and sold separately for intensity verification.

How does captive roto peening differ from loose shot peening?

Captive roto peening uses bonded flaps to contain shot and provide localized, controlled impact, whereas loose shot systems use free media in tumblers or blast cabinets.

Warning:

This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.

For more information, visit www.P65Warnings.ca.gov