D25850K (2) DeWALT Hammer - Parts

This is an original replacement part manufactured for use with rotary hammers. The special o-ring is commonly used to provide cushioning and spacing at the connection point between part assemblies. This o-ring is used with several different models of rotary hammers and the part application may vary depending on the model. The o-ring is so...Read moreld as an individual replacement part, please see model diagram for part location.

O-rings are made to contain thousands of PSI pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. Of the many causes for O-Ring failure, the most common among power tools are: • Extrusion and Nibbling - The O-ring has ragged, tattered edges. These ...Read moreare commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • Abrasion - One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication. • Over Compression - The O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • Heat Hardening - The O-ring has a pitted or cracked surface, and is often flattened on both sides. Caused by temperature exceeding o-ring capacity. • Weather/Ozone Cracking - The O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching (greater that 5%) causes similar cracking.

O-rings are made to contain thousands of PSI pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. Of the many causes for O-Ring failure, the most common among power tools are: • Extrusion and Nibbling - The O-ring has ragged, tattered edges. The...Read morese are commonly caused by pressure spikes which shear off tiny "bites" from the o-ring, or caused by clearance gaps. • Abrasion - One or both sides of the o-ring appear rough and slightly flattened. Commonly caused by a contact surface that is too rough, contains grit or is too smooth to allow lubrication. • Over Compression - The O-ring is flattened on both sides and may have a "ring" split along its length. Commonly caused by excessive pressure or heat. • Heat Hardening - The O-ring has a pitted or cracked surface, and is often flattened on both sides. Caused by temperature exceeding o-ring capacity. • Weather/Ozone Cracking - The O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching (greater that 5%) causes similar cracking.

It is a high quality hardware that is supplied directly from original equipment manufacturer for use with Dewalt and Black and Decker rotary demolition hammers. This replacement screw has several different applications depending on the model of your tool, please make sure to check appropriate diagrams for correct location and use of this hardware. Note that this replacement Torx screw is sold individually.

This is an authentic replacement part that has been sourced from the original manufacturer to be used with demolition hammers from DeWalt and Black and Decker. The metal screw is commonly used to secure the fan assembly to the motor's armature. This item is available as an individual replacement part.

This is a genuine OEM supplied replacement part that is specially designed for Black and Decker and DeWALT rotary hammers. It is the part that the piston is attached to. The piston is a central component that provides the compression inside the cylinder. It provides an identical replacement for a missing or a faulty component that was ins...Read moretalled on a new unit. Please make sure to check the owners manual and the appropriate diagrams of your model for the correct location and application of this part. Keep in mind this high-quality connecting rod is made of durable metal and is sold individually.

This is an original DeWALT replacement part. The bushing is designed by the manufacturer for use in rotary hammers and demolition hammers. This part is made of metal, and is used to secure the collar with the machine body or handle. You may require a punch set when replacing this item. This part is sold individually.

This is an original replacement part manufactured for use with rotary hammers. The collar is used to fasten the forward handle to the body of the hammer. The handle can vary depending upon the model of rotary hammer, please see model diagram for associative parts. The collar is sold individually.