1N-4318 Main bearing CAT spare part

1N-4318 Main bearing CAT spare part Featured Image
  • 1N-4318 Main bearing CAT spare part
  • 1N-4318 Main bearing CAT spare part
  • 1N-4318 Main bearing CAT spare part

Short Description:

199-2164 CAT standard main bearing set for 3406E / C15 engine includes full main shells and integrated thrust shell. Bimetallic thin-wall bearings provide radial crank support and axial control for overhaul of CAT 3406E and C15 heavy-duty diesel engines.


Product Detail

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description

This main shell is a single-piece main bearing for legacy heavy-duty D353 engine. Anti-friction alloy lining is bonded to steel backing with oil retention grooves to maintain stable oil film. It bears heavy radial crankshaft load and controls journal clearance. D353 engines are widely installed on old D9G, D9H track dozers, marine auxiliary engines and stationary mining power units. This bearing is a popular single replacement shell for old fleet overhaul.

Part number: 1N-4318
Alternative name: Main Bearing shell
Outer diameter: 127.61 mm
Size: STD standard
Structure: Split bimetallic thin-wall bearing shell
Material: Steel Backed Aluminum Bearing, Steel Backed Copper-Lead Bearing
Process: Stamping, alloy casting, inner bore honing, oil groove machining, deburring
Fit engine: CAT D353, D353D, D353E
Fit machine: D9G, D9H track dozer, D353 marine engine, stationary mining power unit
Mounting position: Crankshaft main journal
Function: Support crankshaft, build oil film, bear radial load

Advantages

1. 127.61mm standard outer diameter matches D353 crank journal precisely, single shell available for separate replacement.
2. Wear-resistant anti-seizure alloy lining suits continuous impact heavy load of old dozers.
3. Even oil distribution from honed grooves keeps stable oil film under low speed heavy load and prevents seizure.
4. Tight flatness control on shell back avoids bearing rotation and shifting after installation.
5. Thin-wall design improves heat dissipation and reduces overheating failure risk.
6. Compatible with multiple D353 power variants, convenient spare parts sourcing for old machines.

FAQ 

Q1: Is 1N-4318 oversize or standard bearing?
A1: This is STD standard size. Select matching oversize shell for reground crankshaft journals.
Q2: Can I replace only this single shell while keeping others old?
A2: Single replacement is allowed, but recheck clearance strictly due to uneven wear.
Q3: Can this bearing fit C15 engine?
A3: Not compatible. It is designed for D353, dimensions differ from C15 / 3406E bearings.
Q4: How to store the bearing shell?
A4: Pack individually, protect alloy surface from scratches and store in dry anti-rust environment.

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