4100KB Makita Saw - Parts

Genuine Manufacturer Sourced replacement part used on a variety of Makita Power Tools. This is a Metal Pan-Head Screw and it is sold individually. This screws is commonly used to hold two pieces of Housing Set together.

This is a Genuine OEM replacement part used on Makita Power Tools. This item is made out of Plastic and it is Sold Individually. The purpose of the Brush Cap is to retain the Brushes in the Brush Holders. This Brush Cap has external threads that thread into the housing of the tool. Be careful when removing and replacing these, they have a tendency to break.

This Ball Bearing is sealed on both sides. This genuine Makita replacement part is sold individually. rnrn • Ball bearings minimize friction between rotating parts in your tool. The balls or rollers bear the load and spin, distributing the weight evenly, while the minimal contact area of the balls reduces friction. This reduces wear on...Read more the tool, allowing it to run smoothly. rn • Bearings experience constant wear when the tool is in operation from pressure, heat, vibration and friction. Because of this, many Bearings need periodic maintenance or replacement.

This is an authentic Makita replacement part manufactured for use with angle grinders and circular saws. The sealed bearing is used to reduce friction between a rotating shaft and fixed housing or assembly. This bearing is often used to allow the spindle to rotate inside the gear box, but may have other uses. Please see model diagram for part location and usage. This bearing is sold individually.

O-rings are designed to contain thousands of pounds of pressure by creating a seal between two or more parts. O-ring measurements are defined by the inside diameter and the thickness. There are many causes for O-Ring failure, such as pressure, friction, temperature or chemicals. The most common are: • Extrusion and Nibbling...Read moreu> - O-ring has ragged, tattered edges. These 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 - 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 - O-ring has a pitted or cracked surface, and often is flattened on both sides. Caused by temperature exceeding o-ring capacity. • Weather/Ozone Cracking - O-ring is covered in small surface cracks. Caused by exposure to ozone, UV rays and air pollution. Excessive seal stretching causes similar cracking.

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