Dewalt n112877 Ring Gear

Product Description

The DEWALT n112877 is a ring gear replacement part designed for use in DEWALT power tools. The ring gear is a core drivetrain component that meshes with planetary gears inside a gearbox assembly to transfer torque from the motor to the output spindle or chuck. When a ring gear wears, cracks, or strips, the tool loses drive or produces grinding noise under load. Replacing it restores full mechanical function without requiring a complete gearbox or tool replacement. This part is installed by power tool repair technicians and experienced service professionals.

The n112877 ring gear is suited for service and repair applications on compatible DEWALT power tools. It is typically encountered during gearbox rebuilds where the planetary gear train has experienced wear or impact damage. This part is intended for professional repair use and is not a general consumable. Consult the applicable DEWALT service documentation to confirm fitment before installation.

Key Features

• OEM-style ring gear engineered to match original drivetrain geometry
• Restores torque transfer when the planetary gear train is worn or damaged
• Direct replacement format simplifies gearbox reassembly
• Designed for professional-grade DEWALT power tool repair applications

Compatibility

Designed as an OEM-style replacement ring gear for compatible DEWALT power tools. Consult DEWALT service documentation or a DEWALT authorized service center to verify fitment with a specific tool model before ordering.

Installation Notes

Installation should be performed by a qualified power tool repair technician. Disconnect and remove the battery pack or unplug the tool from all power sources before disassembly. Standard power tool service tools including snap ring pliers and gear pullers may be required for gearbox access. Follow the applicable DEWALT service manual procedure to ensure correct gear seating and housing reassembly.

Technical Specifications

• Part Type: Ring Gear

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: n112877