P
FIG. 12

5.Remove the tool from the work surface before turning the tool off. Allow the wheel to stop rotating before laying the tool down.

WARNING: Do not use edge grinding/cutting wheels for surface grinding applications because these wheels are not designed for side pressures encountered with surface grinding. Wheel breakage and serious personal injury may result.

SURFACE FINISHING WITH SANDING FLAP DISCS (FIG. 11)

1.Allow the tool to reach full speed before touching the tool to the work surface.

2.Apply minimum pressure to work surface, allowing the tool to operate at high speed. Sanding rate is greatest when the tool operates at high speed.

3.While depressing the spindle lock button, thread clamp nut (P) on spindle, piloting the raised hub on the clamp nut into the center of sanding disc and backing pad.

4.Tighten the clamp nut by hand. Then depress the spindle lock button while turning the sanding disc until the sanding disc and clamp nut are snug.

5.To remove the wheel, grasp and turn the backing pad and sanding disc while depressing the spindle lock button.

USING SANDING BACKING PADS (FIG. 13)

Choose the proper grit sanding discs for your application. Sanding discs are available in various grits. Coarse grits yield faster material removal rates and a rougher finish. Finer grits yield slower material

3.Maintain a 5° to 10° angle between the tool and work surface.

4.Continuously move the tool in a forward and back motion to avoid creating gouges in the work surface.

5.Remove the tool from work surface before turning tool off. Allow the wheel to stop rotating before laying the tool down.

FIG. 11

5˚–10˚

removal and a smoother finish.

Begin with coarse grit discs for fast, rough material removal. Move to a medium grit paper and finish with a fine grit disc for optimal finish.

Coarse

16–30 grit

Medium

36–80 grit

Fine Finishing

100–120 grit

Very Fine Finishing

150–180 grit

1. Allow the tool to reach full speed before touching tool to the work

surface.

English

MOUNTING SANDING BACKING PADS (FIG. 12) NOTE: Guard may be removed when using sanding backing pads.

WARNING: Proper guard must be reinstalled for grinding wheel, cutting wheel, sanding flap disc, wire brush or wire wheel applications after sanding applications are complete.

1.Place or appropriately thread backing pad

(R) on the spindle.

2.Place the sanding disc (Q) on the backing pad (R).

Q

R

2.

Apply minimum pressure to work surface, allowing the tool to

 

operate at high speed. Sanding rate is greatest when the tool

 

operates at high speed.

3.

Maintain a 5° to 15° angle between the tool and work surface.

 

The sanding disc should contact approximately 1" (25.4 mm) of

 

work surface.

4. Move the tool constantly in a straight line

FIG. 13

to prevent burning and swirling of work

 

 

 

surface. Allowing the tool to rest on the

 

 

 

work surface without moving, or moving

 

 

 

the tool in a circular motion causes

 

5˚–15˚

burning and swirling marks on the work

 

 

 

 

 

 

surface.

 

 

 

66

Page 65 Page 67
Page 66
Image 66
DeWalt DWE4557 instruction manual Surface Finishing with Sanding Flap Discs FIG, Using Sanding Backing Pads FIG
Page 65 Page 67

DWE4557 specifications

The DeWalt DWE4557 is a powerful and robust angle grinder designed to deliver high performance and durability for both professional and DIY enthusiasts. This tool is equipped with a 4.5-inch diameter wheel and is renowned for its efficient performance in heavy-duty applications. One of its key features includes a 13-amp motor that provides a remarkable power output of 2,000 watts, ensuring that it can handle tough materials such as metal and masonry with ease.

One of the standout technologies in the DWE4557 is its electronic kickback brake, which engages in the event of a wheel bind-up. This feature helps to minimize the risk of injury and maximizes user safety by bringing the wheel to a stop quickly. The grinder also boasts a no-volt release switch that prevents the tool from starting unexpectedly when reconnected to a power source—a vital safety consideration for frequent users.

The DWE4557 is designed with user comfort in mind. It has an anti-vibration handle that significantly reduces the amount of vibration felt during operation, allowing for prolonged use without causing discomfort to the user’s hands and arms. The handle can be adjusted for optimal control and comfort, accommodating different user preferences.

Additionally, the angle grinder has an integrated safety guard that can be easily adjusted for convenience and operational versatility. The guard protects the user from debris and sparks while grinding or cutting, thereby enhancing safety during use. The DWE4557 also features a spindle lock for easy wheel changes, making it quick and straightforward to switch between different attachments based on the job at hand.

It is worth noting that the DeWalt DWE4557 is designed for durability. It includes a robust, durable construction that can withstand the rigors of heavy usage, ensuring a long lifespan of the tool. The gear case is also designed for longevity, with a high-performance drive system that ensures consistent and reliable operation.

Overall, the DeWalt DWE4557 is a reliable angle grinder that combines power, performance, and safety features in a compact and durable design. Whether for professional applications or personal projects, this tool is well-equipped to deliver outstanding results in a variety of grinding and cutting tasks.
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