5P-6254 needle roller bearing for CAT bulldozer spare part

5P-6254 needle roller bearing for CAT bulldozer spare part Featured Image
  • 5P-6254 needle roller bearing for CAT bulldozer spare part
  • 5P-6254 needle roller bearing for CAT bulldozer spare part
  • 5P-6254 needle roller bearing for CAT bulldozer spare part

Short Description:

Needle roller bearing 5P-6254 for CAT planetary gear set. Compact structure with high radial load capacity, fitted inside planetary gear bore to support rotation and reduce meshing friction.

Product Detail

Product Tags

description

This is a caged needle roller assembly without separate inner and outer rings. Shaft and planetary gear bore serve directly as raceways. It features compact section and high load capacity. Broken needles, fractured cage, scored raceway and poor lubrication lead to planetary gear noise, excessive play, uneven wear and seizure. Heavy load may damage sun gear and ring gear and destroy planetary assembly.

Part No.: 5P-6254
Part Name: needle roller bearing
Matching Equipment: CAT D8L/D9L/D9N/D9R/D9T/D10N/D10R/D10T track-type tractor
Installation Position: Bore of planetary gear inside transmission
Matching Parts: planetary gear, thrust plate, sun gear, ring gear, transmission overhaul kit selected as overhaul set on demand

Application Scenarios

Fit for CAT D8L, D9L, D9N, D9R, D9T, D10N, D10R, D10T track-type tractor planetary transmission. Suitable for mining and heavy earthmoving conditions. Used to replace damaged needle bearing during gearbox overhaul and planetary gear repair.

FAQ 

Q: The bearing looks intact but sounds gritty when rotated, can it keep working?
A: Not recommended. It indicates pitting on needles or raceway. Cage may break under heavy load and cause gear failure.

Q: Can I only replace the needle bearing if the shaft is worn?
A: No. Shaft surface acts as raceway. New bearing will wear rapidly on worn shaft, repair or replace shaft together.

Q: Can the bearing be reused after needles fall apart and reassembled?
A: No. Needles may have invisible impact damage after scattering, new bearing replacement is required.

Q: Only one bearing damaged in a planetary set, can I replace only this one?
A: Not recommended. Remaining bearings bear the same heavy load with hidden fatigue risk. Full set replacement ensures consistent service life.

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