DWE4120-B3 (Type 1) DeWALT Grinder - Overview

This is an authentic DeWalt replacement part, sourced from the original manufacturer for use with angle grinders. The spindle lock assembly fits into the top of the gearcase and used to seize the spindle when changing grinding wheels. This spindle lock is sold as an individual replacement part, please note the compression spring and o-rings that are used with this item are available separately.

This is an authentic DeWalt replacement part manufactured for small angle grinders. The special paddle assembly is used as an actuator to engage the internal power switch. The paddle assembly includes the safety lever that needs to be pressed to activate the switch. This paddle assembly is sold as an individual replacement part.

This is an OEM spring used with DeWalt angle grinders. This spring fits over the switch and is used separate the switch button and the paddle to keep the grinder off, and to allow compression between the parts when the grinder is on. The replacement part, comprised of durable metal, is sold individually.

The bearing cup is an OEM sourced part that is used with Craftsman angle grinders. This is not an aftermarket imitation part. This item is used to secure the bearing on the commutator side of the armature within the motor housing assembly. This item is available as an individual replacement part.

Keep your DeWALT power tools running at peak performance with this genuine OEM carbon brush, sold individually. While two brushes are required for most tools, it's strongly recommended to replace both at the same time—even if only one appears worn—to ensure optimal motor function. Carbon brushes are essential wear components that naturall...Read morey degrade over time due to friction. Worn brushes are a common cause of poor motor performance, intermittent operation, reduced electric braking, and overall power loss. Signs of wear include brushes that are worn down near the wire lead, cracked, pitted, or burned. Replacing your brushes can restore smooth operation and extend the life of your tool. During replacement, be sure to inspect the armature for any signs of damage such as burns or cracks, which may indicate more serious motor issues. This brush is compatible with a variety of DeWALT tools—check your model for fitment.

It is a genuine manufacturer-supplied component which is designed for DeWALT angle grinders. The brush box assembly is utilized to secure the carbon brush. Motor brushes are responsible for transferring electricity to the motor's spinning armature. To ensure the correct repair procedure, refer to the appropriate diagrams for your model. A...Read more screwdriver will be needed to perform this repair. Note, this high-quality assembly is made of durable materials and is sold as an individual component.