Daewoo DW-3000 Series Training Manual page 14

No Problems of DW-7510
3 Loosening of the DRUM COUPLING bolt Reinforce the fixing torque by changing
- BOLT : M6
- Unbalance weight of DRUM itself
M6 BOLT & NUT
4 Shaft deformation by impact and
FIXING PLATE crack
Improvements of DW-7510
bolt and nut (M6→M8)
- Unbalance weight of DRUM itself
M8 BOLT & NUT
A. Increase diameter of the SHAFT
Ø12
B. Rounding the edge
EDGE
(CRACK)
Date
2001. 5. Redesign the DRUM and BOLT
BUSH & Press
2000. 9.
Ø14
ROUND
11
Improvements of DW-160C
- DRUM : Iron casting→Press & Bush
- BOLT : M8 & SILOCK bond
M8 BOLT & SILOCK
DRUM
Ø14 SHAFT and Round from the beginning
Ø14
ROUND