4P-5437 gear shaft for CAT engine spare part

4P-5437 gear shaft for CAT engine spare part Featured Image
  • 4P-5437 gear shaft for CAT engine spare part
  • 4P-5437 gear shaft for CAT engine spare part
  • 4P-5437 gear shaft for CAT engine spare part

Short Description:

Caterpillar gear chamber fixed support shaft, outer diameter 74.9 mm, serves as mounting mandrel for compound idler gear, restricts radial movement, bears alternating torque and stabilizes timing gear backlash, overhaul replacement for heavy-duty engine gear housing.

Product Detail

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description

This is a stationary idler shaft, different from rotating 101-1366 gear shaft. It does not rotate with gear. The idler bearing rotates on its outer surface. Precision outer diameter controls idler coaxiality and dual-section gear backlash, absorbs transmission shock and keeps fixed center distance, avoiding eccentric wear and timing shift.

It is forged alloy steel with medium-frequency hardened running surface, good fatigue and wear resistance under cyclic radial load. Built-in oil hole feeds lubricant to bearing and prevents seizure and scoring.

It fits heavy-duty Cat engine gear housing for mining trucks, large wheel loaders and generator sets. Only shaft supplied, idler, bearing, spacer and seal sold separately. Verify engine serial number before ordering, do not mix with shafts of different OD.

Part Number: 4P-5437
Name: Gear support shaft
Outer Diameter: 74.9 mm
Height (in): 5.5
Length (in): 9.0
Material: Low Alloy Steel
Type: New part, idler, bearing and spacer not included
Function: Support compound idler, fix gear center distance, carry radial load and stabilize timing mesh

Product Advantages

1. Alloy steel forging with surface hardening, uniform hardness and low deformation under long load
2. Precisely machined 74.9 mm OD maintains stable bearing fit, smooth idler rotation and less eccentric wear
3. Built-in lubrication hole feeds bearing continuously, reduces seizure risk under high temperature
4. OEM step and length positioning keeps fixed gear center distance, quieter timing gear train

FAQ 

Q: What faults will occur if shaft surface is scored or worn?
A: Excessive bearing clearance, eccentric idler, rhythmic gear noise, timing drift, broken teeth and valve-piston contact in severe cases.

Q: Can 4P-5437 replace idler shafts of different outer diameter?
A: No. 74.9 mm OD is dedicated size. Wrong center distance will cause gear interference or excessive backlash.

Q: What happens if oil hole is clogged?
A: Bearing loses lubrication, overheats and seizes, scratches shaft surface and damages whole gear set.

Q: What risk if I reuse old bearing with new shaft?
A: Worn bearing race causes wobble and scratches the new shaft surface rapidly, leading to premature shaft failure.

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