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Changing a grinding wheel 
(high speed wheel)

Important. 

Prior to changing 

a wheel, ensure the grinder is
turned off and the power plug
is removed from the socket.
Make sure that the 
replacement wheel is rated at
3000RPM or higher.
1. Remove the retaining screw

and take off the tool rest (7).

2. Remove the retaining screw

and take off the eye shield
bracket (9) and eye 
shield (1).

3. Take off the third retaining

screw and remove the outer
guard (3).

4. Remove the retaining nut

(see note below for correct
direction of rotation), outer
flange and the wheel.

Note. 

The wheel on the left-

hand side of the grinder has a
left-hand thread and is
unscrewed in a clockwise
direction. The wheel on the
right-hand side of the grinder
has a right-hand thread and is
unscrewed in an 
anti-clockwise direction.
5. Fit the replacement wheel

on the shaft ensuring that
there is a blotter between
the wheel and clamp
washers on each side of the
wheel, and ensure the
wheel is a slide fit (not
loose) on the spindle.

6. Replace the retaining nut.

(See the Note above
regarding the direction of
rotation of the nut).

7. Hold the wheel whilst you

tighten the nut. Do not 
over tighten.

8. Replace the guard and eye

shield assembly.

9. Re-adjust the tool rest and

eye shield.

10. Rotate the wheel by hand

to check for free
movement and proper
adjustments.

11. Plug in the grinder, put

on eye protection, stand
to one side and run the
grinder at full speed for several minutes.

Changing the sharpening wheel (low speed
wheel for Model NTS2000A)

The NTS2000A is a combination Bench Grinder / Sharpener,
fitted with a wet bath on the sharpening wheel.
The sharpening wheel rotates at a much slower rate at
130RPM, and together with the water bath assists to keep
the part being sharpened cool and thus not damaging the
cutting edge.
The water also assists in keeping the wheel clean.
Water should be drained at the completion of the
sharpening task via the small drain hole on the bottom of
the water bath. Ensure the rubber plug is firmly replaced.
When filling the bath with water ensure the water is clean
and fill the bath sufficiently to allow the wheel to be
approx 12mm into the water. As you add the water to the
bath, the sides of the wheel will become wet, thus
indicating the depth of the wheel in the water. Do not
overfill the bath.

10

Содержание BG125A

Страница 1: ... Melbourne Perth Auckland Hong Kong Shanghai Taipei New York Verona London Paris INSTRUCTION MANUAL 1 5 HP 2 5 HP 2 3 HP 1 2 HP Bench Grinders 031222 ED8 DR BG125A BG150A BG200A NTS2000A ...

Страница 2: ...service department This product is warranted for a 2 year period from the date of the original purchase If found to be defective in materials or workmanship the tool or the offending faulty component will be replaced free of charge with another of the same item A small freight charge may apply The warranty replacement unit is only made available by returning the tool to the place of purchase with ...

Страница 3: ...ntain and operate Environmental protection Recycle unwanted materials instead of disposing of them as waste All batteries tools hoses and packaging must be sorted taken to the local recycling centre and recycled or disposed of in an environmentally safe way Description of symbols The rating plate on your tool may show symbols These represent important information about the product or instructions ...

Страница 4: ...ct with the wheel Kickback of work piece and parts of work piece Wheel fracture Catapulting of wheel pieces Damage to hearing if effective earmuffs are not worn Damage to eyes if eye protection is not worn Damage to lungs if breathing protection is not worn Always remove the plug from the mains socket before making any adjustments or maintenance including changing the wheel Warning When using powe...

Страница 5: ...tching it on 16 Avoid unintentional starting Always check that the switch is in the OFF position before plugging in the tool to the power supply Do not carry a plugged in tool with your finger on the switch 17 Use outdoor rated extension cords When a tool is used outdoors use only extension cords that are intended for outdoor use and are so marked 18 Stay alert Watch what you are doing Use common ...

Страница 6: ...are properly fitted and secure Check that the tool rests are properly adjusted before commencing use Do not overload the grinder Allow the grinder to run at full speed or close to full speed during use Never apply excessive pressure to the wheel It might shatter causing personal injury Make sure that the wheel is not in contact with the work when you start the grinder When using the grinder use sa...

Страница 7: ...minimum of 30 minutes All the bench grinders can be fitted with a wire wheel provided that the wheel is rated for use at 3000RPM or higher Guard exhaust All grinders are fitted with a rear guard exhaust This exhaust is provided to assist in the prevention of grinding dust build up within the guard assembly Grinding sparks and dust will project from these exhausts from the rear Ensure the following...

Страница 8: ...d bracket again Fit another flat washer followed by the spring washer and then the nut Tighten the nut so the bracket can slide 4 Fit the eye shield 1 to the top of the bracket Secure the eye shield by passing the 45mm x 5mm screw through both the bracket 9 and eye shield 1 Tighten the screw to the point where the eye shield will move with firm resistance 5 Slide the eye bracket inward or outwards...

Страница 9: ...o reduce vibration Important When directly mounting the grinder ensure The surface under the grinder is flat and clean The 4 mount screws are applied evenly and not over tightened Note The four rubber suction caps should remain in place if mounting screws are used Using the On Off switch 1 To turn the grinder on press the top of the rocker switch 6 marked I 2 To turn the grinder off press the bott...

Страница 10: ...e direction of rotation of the nut 7 Hold the wheel whilst you tighten the nut Do not over tighten 8 Replace the guard and eye shield assembly 9 Re adjust the tool rest and eye shield 10 Rotate the wheel by hand to check for free movement and proper adjustments 11 Plug in the grinder put on eye protection stand to one side and run the grinder at full speed for several minutes Changing the sharpeni...

Страница 11: ...retaining nut firmly by rotating the spanner in a clockwise direction 12 Replace the water bath in the reverse direction as the removal procedure given above How to true and dress the wheels Dressing a wheel cleans and levels the front surface to increase efficiency of operation and prevent vibration 1 Dressing a wheel involves the use of a wheel dresser which is not supplied with the grinder Foll...

Страница 12: ...If the wheels do not rotate freely the bearings should be replaced by an authorised service centre 3 On the wet and dry grinder sharpener the lubrication of the worm drive should be checked after each 50 hours of operation by an authorised service centre Cleaning 1 Keep the outside of the grinder clean by brushing grinding dust and dirt away from all areas where the dust tends to build up 2 Wipe t...

Страница 13: ...ce to make suggestions or give comments about any GMC product With continuing product development changes may have occurred which render the product received slightly different to that shown in this instruction manual The manufacturer reserves the right to change specifications without notice Note Specifications may differ from country to country The GMC 777 Helpline operates from 7am to 7pm 7 day...

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