4N-2109 damper adapter CAT engine spare part

4N-2109 damper adapter CAT engine spare part Featured Image
  • 4N-2109 damper adapter CAT engine spare part
  • 4N-2109 damper adapter CAT engine spare part

Short Description:

Part No.274-1930, CAT new integrated rubber torsional crankshaft damper pulley, for vibration damping and belt drive. It fits C6.6 heavy-duty diesel engine, widely used on large excavators, wheel loaders and industrial power units.


Product Detail

Product Tags

description

This 4N-2109 is stepped flange adapter made of flake gray cast iron. One side matches crankshaft flange, the other has four 5/8-11 threaded holes for damper mounting, polar moment of inertia 0.0372 Nms². It is installed between crankshaft and damper to maintain concentricity and steady torque transmission. Each piece is crack inspected and flatness tested to reduce unbalance. Widely used on underground load-haul-dump machines, large wheel loaders and D9 dozer overhaul.

Part No.：4N-2109
Name：CAT Damper Adapter
Material：Gray flake cast iron
Thread spec：5/8-11, 4 threaded holes
Polar moment of inertia：0.0372 Nms²
Fit engine：3408, 980C, 980H, D9R, R2900G, AD40, AD45
Process：Brand new OEM, MPI inspection, flatness test
Mounting position：Front crankshaft, between crank flange and damper

Advantages

1. OEM cast construction, precise face flatness to keep damper concentric and reduce extra vibration
2. Gray cast iron resists torsional fatigue for heavy shock mining working conditions
3. Fixed bolt layout, direct fit for matched damper, no on-site drilling
4. Stable torque transmission, protect crank flange from modification damage

FAQ 

Q1：Can 4N-2109 interchange with other damper adapters?
A：No. Bolt pattern, inertia and flange thickness are dedicated for matched set.
Q2：Is this a Reman part?
A：No. It is brand new OEM cast iron adapter.
Q3：What risk if damaged adapter remains in service?
A：Misalignment and eccentric damper, severe vibration, crank flange crack and bolt failure.
Q4：Should I inspect the adapter while replacing damper?
A：Inspection is required. Replace once threads or sealing face damaged to protect new damper.

our warehouse

our warehouse

Pack and ship

Pack and ship


  • Previous:
  • Next:
    • Write your message here and send it to us

    Products categories