
Figure 9-3.  Motor Driven Trolley Frame and Drive (“B” Frame Shown).
“B” Frame: Trolley Frame and Drive Components for Figure 
Ref.  | Part  | 
  | Qty.  | 
No.  | Number  | Description  | Req’d  | 
1  | -  | Side Plate  | 1  | 
  | Drum Side – 25’ Lift Frame  | 
  | |
  | Drum Side – 40’ Lift Frame  | 
  | |
2  | -  | Side Plate  | 1  | 
  | Drive Side – 25’ Lift Frame  | 
  | |
  | Drive Side – 40’ Lift Frame  | 
  | |
3  | -  | Counterweight  | 1  | 
  | Counterweight, 25’ Lift Frame  | 
  | |
  | Counterweight, 40’ Lift Frame  | 
  | |
4  | Lockwasher (5/8)  | 2  | |
5  | Hex Head Bolt, Grade 5   | 2  | |
6  | -  | Alignment Bar  | 2  | 
  | Alignment Bar, 4” Thru 14” Trolley Beam Flange Width  | 
  | |
  | Alignment Bar, 14 1/8” Thru 20” Trolley Beam Flange Width  | 
  | |
7  | -  | Hex Cross Shaft  | 1  | 
  | Hex Cross Shaft, 4” Thru 14” Trolley Beam Flange Width  | 
  | |
  | Hex Cross Shaft, 14 1/8” Thru 20” Trolley Beam Flange Width  | 
  | |
8  | Motor (Specify HP, Phase, Voltage, Frequency, & Number of Speeds)  | 1  | |
9  | -  | Traverse Gear Reducer (See Figure   | 1  | 
  | 50 FPM  | 
  | |
  | 75 FPM  | 
  | |
10  | Hex Head Bolt, Grade 5   | 4  | |
11  | Lockwasher (3/8)  | 4  | |
12  | Hex Head Bolt, Grade 5   | 4  | 
34