Adopter Nut
a
5
Unsafe Method Mounting of Wheel on Surface Grinder
Grinder
Grinding wheel Adopter Nut
The back flaange Not used 6
Unsafe Method Mounting of Wheel on Surface Grinder
Grinder
Back flange
Grinding wheel
Adopter Nut
a
12
Grinding machine & wheels
• Straight afe method of mounting of wheel on Straight Grinder
Grinder
Nut not mounted fully on the spindle of the grinder
Guard amissing
17
Mounting of Grinding wheel on Straight Grinder
Grinder
Flanges are put in reverse way
Unsafe Method Mounting of Wheel on Surface Grinder
Grinder
Back flange Grinding wheel
Adopter Nut
Cut-off wheel is used insteada of Depressed centre wh10eel
MOUNTING
• Wheel must easily fit on the spindle. MUST NOT BE LOOSE
• It bore is tight keep the wheel aside. DO NOT TRY TO INCREASE BORE SIZE
a
27
a
28
a
29
a
30
a
31
a
32
a
33
MACHINE
• Machine should be well maintained. There should be no vibration
• There should be no belt slipage
• Bearing should be in good condition
RPM = 18000
a
3
Grinding machine & wheels
• Pedestal Grinder
RPM = 2300
a
4
Mounting of Depressed Centre wheel on Surface Grinder
Grinder
Guard Back flange
Grinding wheel
a
1
Grinding machine & wheels
• Surface Grinder
RPM = 6600
• Mini-Surface Grinder
a RPM = 9000
2
Grinding machine & wheels
• Mini-straight Grinder & It’s compatible wheels
Wheel used as suppaort for paper whe8el
Unsafe Method Mounting of Wheel on Surface Grinder
Grinder
Grinding wheel Adopter Nut
Old used wheel or Metal platea s used in place of back fla9 nge
a
18
Mounting of Grinding wheel on Straight Grinder
Nut Grinder
“D” d=D/3
Grinding wheel
flange
a
19
a
20
a
21
a
22
Precautions Before & During Usage
•Flanges •Mounting •Machine •Visual Inspection •Labels •Safety Devices
Guards
Nut
Grinder
“D” d=D/3
Grinding wheel
flange
a
14
Mounting of Grinding wheel on Straight Grinder
Grinder
Grinding wheel
Using flange on one side only
a
15
Mounting of Grinding wheel on Straight Grinder
Grinder
Grinder
d<D/3
Providing smaller Providing different size
size of flanges of flanges on both sides
a
16
Mounting of Grinding wheel on Straight Grinder
a
23
FLANGES
• Flanges are very important • Both flanges DIA to be same • Flange DIA to be atleast 1/3 dia of wheel • Flanges must be relieved
a
24
a
25
a
26
Unsafe Method Mounting of Wheel on Surface Grinder
M/c RPM 6600
Wheel RPM 6500
Grinding wheel RPM is lesas than RPM of the mach11ine
Mounting of Depressed Centre wheel on Surface Grinder
Grinder
Back flange Grinding wheel
Adaptor nuat not used
7
Unsafe Method Mounting of Wheel on Surface Grinder
Grinder
Back flange Grinding wheel
Adopter Nut