208-01-51150 2080151150 Damper Clutch Disc for Komatsu PC300 PC400

208-01-51150 Damper Disc for Komatsu Excavator

The 208-01-51150 / 2080151150 damper disc is used for Komatsu excavator flywheel coupling and hydraulic pump drive system applications. It is also searched as a damper clutch, clutch damper disc, coupling disc, clutch plate or flywheel damper disc for Komatsu excavator repair.

This page focuses on 208-01-51150 as the main part number. Before ordering, the removed disc should be checked by old part number, outside diameter, inside diameter, teeth count, bolt holes, center hole, mounting face and machine serial number.

Komatsu PC300-6 PC400-6 Application Reference

Common public application references for 208-01-51150 include Komatsu PC300-6, PC350-6, PC400-6 and PC450-6 excavator groups. These model names should be used as checking references only, because damper disc configuration can vary by production version, coupling layout and previous repair history.

Some supplier listings also mention older or extended machine references such as PC300-3, PC400LC-3, PC400LC-5, PC400LC-6, PC410LC-1, PC450LC-6 and CD110R-1. These should be checked carefully against the old disc before shipment.

Do not select this damper disc by machine model alone. The removed disc number and physical dimensions are more reliable than model name when confirming fitment.

Part Number and Catalog Checking Notes

The main part number for this page is 208-01-51150. The no-hyphen format 2080151150 is also used in buyer searches and supplier catalogs.

Public catalog references describe 208-01-51150 as DAMPER, DISC. Some supplier pages list 207-01-61310, 207-01-31110, 207-01-31111 or 14X-12-11102 together with this group. These numbers should be treated as catalog checking references only unless the old disc confirms the same dimensions and mounting layout.

For this product page, 208-01-51150 should remain the primary search signal. Related references should support inquiry checking, not replace old part confirmation.

Damper Clutch Disc Function

The damper clutch disc is installed in the engine rear drive and hydraulic pump coupling area. It helps transmit torque while reducing torsional vibration and shock load between the engine flywheel side and the driven hydraulic pump system.

When the damper disc is worn, cracked or incorrectly matched, the machine may develop vibration, coupling noise, unstable hydraulic pump drive response or repeated coupling damage. Correct selection is important because OD, ID, teeth count, center hole and bolt pattern must match the original system.

How to Identify the Correct 208-01-51150 Disc

• Check whether the old part number matches 208-01-51150 or 2080151150.

• Measure outside diameter and inside diameter before ordering.

• Confirm teeth count, center hole and coupling center structure.

• Compare bolt hole quantity, bolt circle and mounting face layout.

• Check the friction surface, damping plate, spring or rubber damping structure according to the old design.

• Confirm machine model and serial number when the old number is missing or unreadable.

Common Failure Symptoms

• Abnormal vibration from the engine rear side or hydraulic pump coupling area.

• Knocking, rattling or impact noise during engine start, stop or load change.

• Visible cracks, broken damping elements, damaged teeth or worn friction surface.

• Hydraulic pump drive interruption caused by disc or coupling failure.

• Repeated coupling failure caused by misalignment, loose bolts or incorrect replacement part.

• Excessive vibration after replacement caused by wrong diameter, wrong teeth count or incorrect mounting direction.

Troubleshooting Before Replacement

Before replacing the 208-01-51150 damper disc, inspect the complete flywheel coupling and hydraulic pump drive area. Damper disc failure may be caused by normal wear, but it can also be related to pump misalignment, loose mounting bolts, engine vibration or previous incorrect installation.

• Check coupling hub, flywheel side and pump input side for wear or damage.

• Inspect mounting bolts, washers and spacer parts before installing a new disc.

• Check engine mounts and hydraulic pump mounting bracket for looseness or misalignment.

• Inspect flywheel housing and pump drive housing if repeated damper failure occurs.

• Confirm whether the old disc failed from wear, misalignment, overload, loose bolts or wrong replacement part.

Installation and Maintenance Notes

• Compare the old and new disc before installation, including OD, ID, thickness, teeth count and bolt holes.

• Clean the mounting face and remove debris before assembly.

• Replace damaged bolts, washers or spacer parts when required.

• Tighten bolts evenly according to the service procedure to avoid uneven stress.

• Check alignment between engine flywheel side and hydraulic pump drive side before startup.

• After installation, check abnormal vibration, noise and pump drive response during low-load testing.

Information Needed Before Ordering

To reduce wrong orders, please send the old disc number, Komatsu machine model, machine serial number, front and rear photos of the old disc, outside diameter, inside diameter, thickness, teeth count, bolt hole photo and any visible marks before quotation.

FAQ

Q: What is 208-01-51150?

208-01-51150 is a Komatsu damper disc or damper clutch reference used in excavator flywheel coupling and hydraulic pump drive applications.

Q: Is 2080151150 the same search format?

Yes. 2080151150 is the no-hyphen format of 208-01-51150 and is commonly used in supplier catalogs and buyer searches.

Q: Which Komatsu models are common references?

Common checking references include Komatsu PC300-6, PC350-6, PC400-6 and PC450-6. Other older PC300, PC400 and CD110R references should be verified by the old disc and machine serial number.

Q: Can 207-01-61310 or 14X-12-11102 be used as cross references?

These numbers may appear in some supplier references together with 208-01-51150, but they should be treated as catalog checking references unless the old disc confirms the same dimensions, teeth count and mounting layout.

Q: What should be checked before ordering?

Check the old disc number, OD, ID, thickness, teeth count, center hole, bolt holes, mounting face and machine serial number. Clear front and rear photos are recommended.