Komatsu PC500LC-10R Shop Manual page 338

COMPONENT PARTS OF SWING SYSTEM
1: Swing pinion (quantity of teeth: 13)
2: Cover
3: Case
4: No.2 planetary gear (quantity of teeth: 23)
5: No.2 sun gear (quantity of teeth: 16)
6: Ring gear (number of teeth on No. 1 side: 80, num-
ber of teeth on No. 2 side: 64)
7: No.1 sun gear (quantity of teeth: 19)
SPECIFICATIONS OF SWING MACHINERY
Reduction ratio: ((19+80)/19 x (16+64)/16)=26.053
Swing reduction ratio: 26.053 x (84/13)=168.340
Swing speed: 9.1 rpm
FUNCTION OF SWING MACHINERY
The swing machinery reduces the swing motor speed, increases the swing force, and reduces the swing speed
to proper speed.
SWING CIRCLE
STRUCTURE OF SWING CIRCLE
Machine with tube
10-244
10 STRUCTURE AND FUNCTION
8: Swing motor
9: Oil level gauge
10: No.1 planetary gear (quantity of teeth: 30)
11: No. 1 planetary carrier
12: No. 2 planetary carrier
13: Drain plug
PC500LC-10R