Dewalt 108121 Crank Bearing

Product Description

The DEWALT 108121 is a crank bearing designed as a replacement component for DEWALT power tools. Crank bearings support rotational shaft movement within reciprocating and rotary tool assemblies, reducing friction and maintaining alignment under load. This part is sourced from DEWALT's parts and accessories line, making it a direct fit for applicable tool models requiring this bearing. Installation is typically performed by power tool technicians or experienced service professionals performing mechanical rebuilds or preventive maintenance.

This crank bearing is suited for use in DEWALT power tools that rely on a crankshaft-driven mechanism. Typical applications include reciprocating saws, rotary hammers, and similar tools where the crank assembly converts rotational motor output into linear or oscillating motion. Replacement is indicated when worn bearings produce abnormal noise, vibration, or reduced tool performance.

Key Features

• OEM DEWALT replacement crank bearing for power tool service
• Supports rotational shaft alignment under mechanical load
• Reduces friction at the crank assembly interface
• Direct replacement for worn or failed original bearing

Compatibility

Designed as an OEM-style replacement crank bearing for applicable DEWALT power tools. Consult the tool's parts diagram using part number 108121 to confirm fitment before ordering.

Installation Notes

Installation should be performed by a qualified power tool technician familiar with mechanical disassembly procedures. Disconnect and isolate the tool from any power source before beginning service. Use appropriate bearing press or installation tools to seat the bearing without applying force to the bearing race in a way that could damage internal components. Refer to the tool's service manual for disassembly sequence and reassembly torque guidance.

Technical Specifications

• Part Type: Crank Bearing

Standard Information

• Brand: DEWALT
• Manufacturer Part Number: 108121