Fein MB 106-1 Operating Instructions

MB 106-1
To be handed to the workshop!
Operating instructions
for the Electric Lathe Grinder type MB 106-1
and type 106-1 K {42 Volts}
1.
Technical data
Current: 3-phase, 50 cycles
Mode of
I
Speed of Pulley at motor Pulley at quill Driving belt
I
Wheel Net weight
grinding I
quill
Order
I
Cb
I
Order
R.P.M. Reference in.
I
mm
Reference
external
I 110
I
grinding
4400
MZ 1-71
I ~
MZ 1-22
~ ~-
internal
grinding
11000
I
MZ 1-71
I
411.
110 MZ 1-1
2. Construction
The grinding spindle is mounted axially adjustable in a clamp-
ing block. It is driven v ia endless belt by a 3-phase motor. The
motor is guarded by a filter against dust and dirt and is adjust-
able at the clamping block by means of a rocker. The block is
slotted for mounting on the slide of a machine tool. The reduced
spindle overhang guarantees precise surface finish.
3. External or internal grinding
For these modes of grinding use different pulleys and driving
belts in order to attain the highest possible peripheral speed
of the grinding wheel. Moreover, external grinding requires a
wheel guard. The extension spindles on pages 2 and 3 are used
for internal grinding. When replacing grinding wheel flange (63)
or extension spindles, MT-socket as well as tapered spindle
should be slightly lubricated. When replacing pulley or grinding
wheel take care that spindle is not forc ed, in ord er t o avoid
damage to ball bearings or axial play , which impair the surface
finish.
4. Connection
Check connection of socket and earthing conductor (voltage
tester) before connecting the tool. Run tool unloade d for a short
time in order to check the prescribed direction of rotation and
to avoid loosening of the grinding wheel while working. Further,
check the running of the driving belt.
The tension of the belt must not be too high in order to avoid
unnecessary stress on or damage to the spindle bearings. For
external grinding mind correct adjustment of the wheel guard.
5. Tending the driving belt
Unscrew hexagon scr ew (39) and displace rocker w ith motor to
adjust the require d tension of the belt. M aybe, the guard (45)
should be adjuste d; for this purpose unscrew h exagon nuts
(48, 53).
6. Grinding wheel
For good surface finish
use for soft material a har d-bonded wheel
for hard material a soft-bonded wheel
Layers of elastic material should be placed b etween flange and
grinding wheel. In doubt, ask your dealer for the correct wheel
BE
170/ e
X 1. 65 Printed in Germany
I
I
I
(/)
Order
I
Guard
I
in.
I
mm Refer. in.
I
mm
I
lbs kg
I
I
I 3 75
I
M 10-7-3
36
1
/•
920
- - -
MZ 4-4
35 15.8
x 1
5
/s
X
40
Pis
I
29
I
I I I
stating the purpose. At any rate, observe the instructions on
"max. peripheral speed of grinding wheels" .
7. Dressing the grinding wheel
Usually the grinder remains fixed on the slide and the grinding
wheel is moved uniformly to and fro in front of t he dressing tool
mounte d on the lathe. Avoid free-hand dressing of the wheel
as it is inaccurate and also dangerous. Inaccurately dressed
grinding w heels impair the surface finish.
8. Dismantling of motor
1. Pull out plug.
2. Take off pulley.
3. Unscrew 4 nuts (21) and remove hexagon screw s (19).
4. Remove ball bearings .
Re-assemble in reverse sequence.
8a Dismantling of spindle
1.
Remov e cylindrical screws (61) and take off pulley (62) or (92)
as well as grinding w heel flange (63) or extension spindle .
2. Unscrew grubscrews (59, 60, 70).
3. Take out spindle shaft.
9. Maintenance and lubrication
1. Motor
Continuous use of the motor requires careful maintenance.
The rotor ball bearings are protected against dust and dirt
and loss of grease by sealing rings . The t ool should be
cleaned thoroughly after approx. 800 duty hours and old
grease should be removed. Rinse ball bearings and r efill
1
/3
with fresh, acid-free grease.
Clean all electric parts dry a nd blow or brush away the dust.
2. Spindle
We recommend to take spindle apart after 500 duty hours
and to clean all parts thoroughly. Rinse ball bearings and re-
fill
1(3
w ith acid-free grease.
10. Spare parts
When ordering spare parts, p lease, quote Order Reference or
send in sample part.