3.Insert the adapter into the nose of the tool as described in “Installing Bits”. Set the stop rotation knob to the hammering-with-rotation setting.

4.Press the center pin firmly against your center mark, hold the tool firmly and pull the trigger (Fig. 6).

Fig. 6

NOTE: If a center pin and guide plate are not available, use a tem- plate or notched board to start the hole (Fig. 7).

Fig. 7

5.After drilling to about the depth of the core bit teeth, remove the center pin and guide plate from the core bit. Resume drilling.

6.To change the core bit, hold the tool upwards, pointing it away from your body as shown, and run it briefly in forward to loosen the core bit from the adapter (Fig. 8).

Fig. 8

NOTE: To make deeper holes, remove the core bit, break and re- move the core. Resume drilling.

Using LHS Rotary Percussion Core Bits (Fig. 9-12)

LHS Core Bits are useful for drilling large or long holes in concrete. MILWAUKEE Heavy-Duty Core Bits have heat-treated steel bodies with durable carbide tips. These core bits are specially designed for fast, accurate drilling with combined hammering and rotary action.

1.Clean and lubricate the threads on the adapter and core bit to make later removal easier. Screw the threaded end of the centering bit into the core bit (Fig. 9). Thread the adapter shank to the rear of the core bit.

NOTE: If using an extension, first thread the adapter shank to the extension. Then thread the core bit to the extension.

Fig. 9

2.Insert the adapter into the nose of the tool as described in “Installing Bits”. Set the stop rotation knob to the hammering-with-rotation setting.

3.Press the centering bit firmly against your center mark, hold the tool firmly and pull the trigger (Fig. 10).

Fig. 10

NOTE: If the 48-20-5099 threaded stud is used, use a template or notched board to start the hole (Fig. 11).

Fig. 11

4.To change the core bit, hold the tool upwards, pointing it away from your body as shown, and run it briefly in forward to loosen the core bit from the adapter (Fig. 12).

Fig. 12

NOTE: To make deeper holes, remove the core bit, break and remove the core. Resume drilling. When drilling long or deep holes, after each inch of penetration pull the bit partially out of the hole while the tool is running, to help clear dust from the bit flutes. Dust can clog the bit flutes and can make the bit bind in the hole. If this occurs, stop the tool, free the bit and begin again.

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Milwaukee 5314-21 manual Using LHS Rotary Percussion Core Bits Fig
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5314-21 specifications

The Milwaukee 5314-21 is a versatile and powerful tool designed to meet the demanding needs of professionals in construction and renovation projects. This rotary hammer drill combines innovative technology with robust construction, making it an essential addition to any toolkit.

One of the standout features of the Milwaukee 5314-21 is its high-performance motor, which delivers up to 7.0 amps of power. This allows the tool to handle tough drilling tasks with relative ease, making it suitable for a wide range of applications, including concrete, masonry, and even wood. Its impressive drilling capacity of up to 1-1/8 inches in concrete means that users can tackle larger projects without needing to switch tools.

The tool is equipped with an SDS-plus chuck system, which ensures quick and easy bit changes without the need for additional tools. This feature enhances productivity, especially for those who need to switch between different types of bits frequently during a job. Furthermore, the rotary hammer mode can be engaged for efficient drilling in hard materials, while the hammer-only mode is ideal for demolishing tasks.

Another essential characteristic of the Milwaukee 5314-21 is its ergonomic design. The rubber overmold provides a comfortable grip, reducing fatigue during prolonged use. Additionally, the lightweight design of the hammer itself ensures that users can work longer without feeling weighed down.

Safety is a top priority with the Milwaukee 5314-21, which features a two-finger trigger for added control and an electronic reverse for easy bit removal. A depth gauge is included to provide precise drilling depths, ensuring accuracy for various projects.

Overall, the Milwaukee 5314-21 stands out due to its combination of power, versatility, and user-focused design. It excels in both professional and DIY environments, ensuring reliability and efficiency. Whether you are a seasoned contractor or a passionate DIY enthusiast, this rotary hammer drill is engineered to meet a variety of needs while delivering exceptional performance.
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