3M 7100117766 Replacement Spring for Random Orbital Sanders

Product Description

The 3M 7100117766 is a OEM replacement spring designed for use in 3M electric random orbital sanders. This small-format compression spring provides the mechanical tension and return force required to maintain consistent sander operation. It measures 10.3 mm outer diameter, 25 mm in length, and uses 0.85 mm wire diameter. When a sander loses consistent pad action or shows signs of internal mechanical fatigue, worn or broken springs like this one are a common cause. Replacement is typically performed by qualified power tool repair technicians or experienced service personnel familiar with 3M sander disassembly procedures.

This spring is intended as a direct internal replacement component for 3M electric random orbital sanders. It is sold individually and suits repair or maintenance scenarios where the original spring has fatigued, deformed, or broken during service. Consult the applicable 3M owners manual and parts list schematic to confirm this spring is the correct component for the specific sander model being serviced before ordering.

Key Features

• OEM replacement spring engineered to original 3M specifications
• 10.3 mm outer diameter for precise fitment within the sander housing
• 25 mm free length provides correct mechanical travel and return force
• 0.85 mm wire diameter for appropriate spring rate and durability
• Sold individually, allowing single-unit replacement without surplus

Compatibility

Designed as a replacement internal spring component for 3M electric random orbital sanders. Refer to the 3M owners manual parts list and tool schematic to verify fitment for your specific sander model before installation.

Installation Notes

Installation should be performed by a qualified power tool repair technician. Disconnect and de-energize the sander completely before disassembling the tool housing. Refer to the official 3M owners manual and parts schematic to identify the correct spring location and reassembly sequence. Do not force components during reassembly, as incorrect spring seating can affect sander performance or cause premature part failure.

Technical Specifications

• Outer Diameter: 10.3 mm
• Free Length: 25 mm
• Wire Diameter: 0.85 mm
• Sold As: Each
• Minimum Order Quantity: 1
• UPC: 00051141551203

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100117766