3M 7000118163 Microfinishing Film Roll 372L 100 Micron

Product Description

The 3M 7000118163 Microfinishing Film Roll 372L is a precision abrasive roll designed for controlled finishing of cylindrical surfaces in production and service environments. The abrasive mineral is aluminum oxide, resin bonded to a 5 mil polyester film backing. A friction grip coating on the backing provides slip resistance during operation, helping maintain consistent contact pressure across the workpiece. At 100 micron grit grade, this roll is suited for aggressive stock removal while still delivering a uniform surface finish. Machinists, automotive technicians, and precision grinding shops typically work with this product during camshaft and crankshaft reconditioning operations.

This roll is configured for use on lathe-style finishing equipment and similar cylindrical polishing setups. The 3 inch keyed core and ASO (Abrasive Surface Out) wind orientation are matched to powered film finishing machines that accept keyed-core rolls. The 8 inch width and 150 ft length provide extended run time before roll changeover, making it appropriate for production environments where downtime between media changes affects throughput. Typical applications include automotive engine component reconditioning, precision shaft finishing, and surface conditioning of cylindrical metal workpieces.

Key Features

• Aluminum oxide abrasive mineral resin bonded for consistent cut rate and long roll life
• 5 mil polyester film backing provides dimensional stability and tear resistance under tension
• Friction grip backing coating reduces slippage during finishing strokes
• 100 micron grit grade balances aggressive stock removal with surface uniformity
• ASO wind with keyed 3 inch core for compatibility with powered film finishing machines
• 8 inch x 150 ft roll dimensions support extended production runs

Compatibility

Designed for use on powered cylindrical film finishing machines that accept an 8 inch wide, keyed 3 inch core roll in ASO orientation. Suitable for finishing automotive camshafts, crankshafts, and similar precision cylindrical metal components.

Installation Notes

Loading and threading of abrasive film rolls should be performed by qualified machine operators following the equipment manufacturer's setup procedure. Ensure the finishing machine is powered down and de-energized before changing rolls. Verify that core key alignment is correct before tensioning the roll to avoid tracking problems or premature edge wear. Proper workpiece speed, film feed rate, and contact pressure should be set per the machine manufacturer's specifications for the grit grade in use.

Technical Specifications

• Abrasive Mineral: Aluminum Oxide
• Grit Grade: 100 Micron
• Backing: 5 mil Polyester Film
• Backing Coating: Friction Grip
• Wind Orientation: ASO (Abrasive Surface Out)
• Roll Width: 8 inches
• Roll Length: 150 ft
• Core Diameter: 3 inches
• Core Type: Keyed
• Weight: 11 pounds
• UPC: 00051144149711

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000118163