22H-2449 Main bearing CAT spare part

22H-2449 Main bearing CAT spare part Featured Image
  • 22H-2449 Main bearing CAT spare part
  • 22H-2449 Main bearing CAT spare part
  • 22H-2449 Main bearing CAT spare part

Short Description:

292-3512 CAT 51-tooth pump drive gear, carburized and hardened alloy steel transmission gear. It transfers power to lube pump for oil delivery on heavy-duty Cat engines.


Product Detail

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description

This main bearing is 0.025″ oversize intermediate main shell for D342 and D343 heavy engines, supplied as a pair of split shells. Anti-friction alloy lining bonded to steel backing with oil grooves maintains stable oil film and carries radial crank load. It is designed for crank journals reground 0.025 inch. Widely used on old large dozers, stationary mining power units and marine auxiliary engines. It works with matching thrust bearings and front/rear main shells including 2H2451 and 4H5511 in one overhaul set.

Part number: 2H-2449
Alternative name: Main Bearing pair
Size: 0.025 inch oversize
Structure: Split bimetallic thin-wall bearing shell (sold as pair)
Material: Aluminum Bearing
Process: Stamping, alloy casting, inner bore honing, oil groove machining, deburring, paired sorting
Fit engine: CAT D342, D343
Fit machine: Large track dozer, stationary mining power unit, marine auxiliary diesel engine
Mounting position: Intermediate crankshaft main journal
Function: Support crankshaft, build oil film, bear radial load for journals reground 0.025 inch

Advantages

1. 0.025″ oversize dimension for reground intermediate journals of D342/D343, saves crank replacement cost.
2. Factory paired shells with unified tolerance to keep consistent clearance after assembly.
3. Good conformable alloy lining resists seizure under continuous heavy impact load of legacy machines.
4. Even oil distribution from grooves maintains stable oil film and prevents bearing seizure at low speed heavy load.
5. Tight flatness control on shell back avoids bearing rotation and shifting after installation.
6. Compatible with other D342 series bearings, convenient for full overhaul kit stocking.

FAQ 

Q1: Can 2H-2449 fit D353 engine?
A1: Not interchangeable. It is designed for D342/D343, different journal diameter and shell width.
Q2: Can I replace only this intermediate pair and reuse front and rear main shells?
A2: Separate replacement is allowed, but clearance must be checked. Full set replacement is preferred.
Q3: Can this 0.025″ oversize shell fit new STD crankshaft?
A3: No. It is only for reground crank journals. New crankshaft uses STD bearing.
Q4: How to store the paired bearing shells?
A4: Keep paired, do not split. Protect alloy surfaces and store in dry anti-rust environment.

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