Mounting and Using Depressed Center Grinding Wheels and Sanding Flap Discs

MOUNTING AND REMOVING HUBBED WHEELS

Hubbed wheels install directly on the 5/8"–11 (B3) & M14 (AR, B2, B2C, BR threaded spindle.

1.Thread the wheel on the spindle by hand, seating the wheel against the soft mount.

2.Depress the spindle lock button and use a wrench to tighten the hub of the wheel.

3.Reverse the above procedure to remove the wheel.

CAUTION: Failure to properly seat the wheel against the soft mount before turning the tool on may result in damage to the tool or the wheel.

MOUNTING NON-HUBBED WHEELS

 

FIG. 8

Depressed center Type 27 grinding wheels

 

must be used with available accessory flanges.

 

See the chart on pages 62–64 of this manual

 

for more information.

 

O

1. Install the metal backing flange (O)

on

E

spindle (E) against the soft mount.

2. Place wheel against the backing flange, centering the wheel on the backing flange pilot.

3. While depressing the spindle lock button, thread the clamp nut (P) on spindle, P piloting the raised hub on clamp nut in the center of grinding wheel.

4.Tighten the clamp nut with a wrench.

5.Reverse the above procedure to remove the wheel.

SURFACE GRINDING WITH GRINDING WHEELS (FIG. 9)

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

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

3.Maintain a 20° to 30° angle between the tool and work surface.

4. Continuously move the tool in a forward FIG. 9 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

 

 

20˚–30˚

stop rotating before laying the tool down.

 

 

 

 

EDGE GRINDING WITH GRINDING WHEELS (FIG. 10)

WARNING: Wheels used for cutting and edge FIG. 10 grinding may break or kickback if they bend or

twist while the tool is being used to do cut-off work or deep grinding. To reduce the risk of serious injury, limit the use of these wheels with a standard Type 27 guard to shallow cutting and notching (less than 1/2" [13 mm] in depth). The open side of the guard must be positioned away from the operator. For deeper cutting with a Type 1 cut-off wheel, use a closed Type 1 guard. Refer to pages 62–64 for more information.

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

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

3.Position yourself so that the open-underside of the wheel is facing away from you.

4.Once a cut is begun and a notch is established in the workpiece, do not change the angle of the cut. Changing the angle will cause the wheel to bend and may cause wheel breakage. Edge grinding wheels are not designed to withstand side pressures caused by bending.

English

65

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DeWalt DWE4557 Mounting and Removing Hubbed Wheels, Mounting NON-HUBBED Wheels, Surface Grinding with Grinding Wheels FIG
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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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