The primary functions of the slewing bearing on a Caterpillar 374D are:
Load Support and Transfer:
It carries the entire weight of the upper structure, which includes the cab, engine, counterweight, and the attachment (boom, arm, bucket).
It transfers massive axial (vertical) and radial (horizontal) loads, as well as moment (tilting) loads generated during digging, lifting, and swinging operations.
Smooth Rotation (Slewing):
It provides a low-friction interface that allows the upper structure to rotate smoothly and precisely on the undercarriage.
The internal raceway, filled with balls or rollers, facilitates this effortless movement.
This 333-3009 slewing bearing is used for 374D excavator.
Related part number:
5K-9243
7Y-1647
199-4500
453-1667
296-6211
296-6212
296-6213
296-6214
296-6254
367-8361
3B-8489
148-4685
227-6076
342-1895
342-1896
148-4703
148-4704
171-9285
3B-8489
4N-9170
7Y-1095
7Y-1648
8T-4121
8T-4136
8T-4137
8T-4196
8T-4199
8T-6757
1U-8846
