Delta 23-725 Bedienerhandbuch PDF herunterladen (Seite 11)

11 - English

GRINDING WHEELS

The use of accessories and attachments not recommended by Delta may result in risk of injuries.

Grinding wheels used with Model 23-725 grinders should be rated for 1800 RPM or higher and be 8" (203 mm) in

diameter with a 5/8" (15.9 mm) or 1" (25.4 mm)arbor hole.

For best grinding results, and to maintain good balance, always keep the wheels properly dressed. Do not force the

work against a cold wheel. The grinding wheel should always be run at idle speed for one full minute before applying

work. It is recommended that only balanced wheels be used with your grinder. The use of balanced wheels adds years

to the life of the bearings on the grinder and by eliminating the most common source of vibration, more accurate work is

accomplished.

ALWAYS maintain a distance of 1/8" (3.2 mm)or less between the grinding wheel and the tool rest.

Adjust the tool rests and spark guards as the grinding wheels decrease in size with use.

DRESSING A GRINDING WHEEL

When dressing a grinding wheel, use a suitable silicone

carbide stick type dresser or the wheel dresser wrench

provided with the grinder, as shown in Fig. 10. Move

the dresser forward on the tool rest until it touches the

high point on the face of the wheel. Dress the wheel

by moving the dresser back and forth. Repeat this

operation until the face of the grinding wheel is clean

and the corners of the wheels are square.

ALWAYS maintain a distance of 1/8"

or less between the grinding wheel and the tool

rest. Adjust the tool rests and spark guards as the

grinding wheels decrease in size with use.

CHANGING THE GRINDING WHEELS

Disconnect machine from power source!

1. Remove the screws (A) Fig. 11 and the side covers (B) from the grinding wheel.

2. To prevent shaft rotation, place a wedge between the grinding wheel (C) Fig. 12 and the tool rest (D).

NOTE: To remove the left grinding wheel, turn the arbor nut (E) clockwise (toward the front) to loosen. To remove the

right grinding wheel, turn the arbor nut counter-clockwise (toward the front) to loosen.

3. If the replacement wheel does not require the arbor bushing, save it for future use.

4. To install a new wheel, reverse the procedure.

Do not overtighten the wheel nuts when installing grinding wheels. Tighten the wheel nuts enough

to drive the wheel and prevent slippage.

Fig. 10

Fig. 12

Fig. 11

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Delta 23-725 Bedienerhandbuch Seite 11