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Shibaura ST330 - Page 236

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224
10. Maintenance
Item Model
Name
A007T03877 MITSUBISHI
Nominal output
V-A
12-40
Polarity Negative ground
Weight
kg
Approx.3.7 8.2 lb
Rotational direction Viewed from the pulley
Clockwise
Load characteristics
cold
Terminal voltage V
13.5
Current A
Min. 30
Revolution number rpm
2500
Brush length
Original
mm
18.5 0.728”
Limit
mm
5.0 0.2”
Brush spring tension
Original
g
470 590 1.036 1.300 lb
Limit
g
270 0.60 lb
Bearing
Rear side ECSC8
Front side 6303DDG
Slip ring diameter
eccentric wear
To be repaired mm 0.05 .002
Allowable limit
mm
0.2 0.08”
Slip rings surface condition
If dirty or damaged correct
with emery clothe.
Rotor shaft bending
To be repaired mm 0.07 .0028
Field coil resistance Ω/at 5000rpm
2.8
Adjusting voltage V at 5000rpm 14.4 15.0

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