20Y-27-22170 Planetary Carrier for Komatsu Final Drive

20Y-27-22170 Carrier Assy for Komatsu PC200 Final Drive

The 20Y-27-22170 carrier assy is supplied for Komatsu excavator final drive and planetary gear reduction repair. It is commonly searched as 20Y-27-22170, 20Y2722170, carrier assy, planetary carrier, final drive carrier or excavator carrier assembly for Komatsu PC200 series machine references.

This page focuses on 20Y-27-22170 as the main part number. 20Y2722170 is the no-hyphen search format. Final fitment should be confirmed by the old carrier number, gear stage, planetary gear position, teeth count, shaft fit, bearing position, overall dimensions and machine information before ordering.

Machine and System Reference

Common machine references for this carrier assembly include Komatsu PC200-6 and PC200-7 excavators. It is used as a carrier reference for the final drive planetary reduction system, not as a general hydraulic pump, swing motor or engine component.

Machine model alone is not enough for final confirmation. Carrier assemblies may vary by final drive version, gear stage, shaft structure, gear set, bearing seat, washer arrangement and serial number range. The removed carrier and old part number are more reliable than the model name alone.

For accurate ordering, compare the removed carrier assembly with the replacement unit before shipment. Photos of the old carrier, gear side, shaft side, bearing position, gear set, damaged area and machine nameplate are useful for confirmation.

Part Number and Reference Notes

20Y-27-22170 is the main part number of this product page. It should stay visible in the SEO Title, H1, top parameters, first paragraph, product body and image ALT text.

20Y2722170 is the no-hyphen writing format of 20Y-27-22170. Buyers may search either format, so both formats can be kept on the page.

Do not mix nearby carrier or gear numbers into this page unless interchange is confirmed by the old part number and physical structure. Similar carrier assemblies may differ by gear stage, teeth count, gear diameter, bearing position, shaft fit and final drive arrangement.

How to Confirm the Correct Carrier Assembly

Carrier assemblies can look similar in product photos, but small differences in gear stage, teeth count, bearing position, shaft fit and carrier diameter may affect installation. Please compare the removed carrier before ordering.

• Confirm whether the old part number is 20Y-27-22170 or 20Y2722170.

• Check whether the machine reference is Komatsu PC200-6 or PC200-7.

• Confirm whether the part is for final drive planetary reduction, not swing reduction.

• Compare the carrier diameter, gear position, shaft fit and bearing seat.

• Check the planetary gear set, washer position and mounting structure.

• Send photos of the old carrier, gear side, shaft side, bearing position and machine nameplate before quotation if you are not sure.

Common Carrier Assembly Failure Symptoms

A final drive carrier assembly may need replacement when the travel reduction system has abnormal noise, broken planetary gears, damaged carrier holes, excessive gear clearance, cracked carrier body, metal particles in gear oil or poor travel drive performance.

Before replacing the carrier assembly, inspect the planetary gears, sun gear, ring gear, bearings, washers, shafts, seals and gear oil condition. Carrier damage may be caused by worn bearings, broken gears, poor lubrication, contamination or overload.

If the old carrier failed because of broken gears, contaminated oil, bearing seizure or lack of lubrication, the root cause should be corrected before installing the replacement carrier assembly. Otherwise, the new carrier may fail again.

Installation and Inspection Notes

Before installation, clean the final drive housing and inspect all related gears, bearings and washers. Do not install the replacement carrier into a contaminated or damaged reduction assembly.

Check gear mesh, bearing seating, washer position and lubrication before final assembly. Incorrect assembly may cause abnormal noise, overheating or early gear failure.

After installation, refill the correct gear oil and test the travel function under low load first. If abnormal noise or heat appears, stop operation and recheck the final drive gear set before continued use.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 20Y-27-22170 carrier assy is suitable for Komatsu PC200 final drive repair when the old carrier is cracked, worn, broken or damaged together with the planetary gear set.

For parts distributors, it can be supplied as a Komatsu PC200 planetary carrier reference for final drive repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old carrier number, machine model, serial number and photos of the old carrier from multiple angles.

FAQ

What is the main product on this page?

This page is for the 20Y-27-22170 / 20Y2722170 carrier assy used for Komatsu excavator final drive planetary reduction repair.

Is 20Y2722170 the same search format as 20Y-27-22170?

20Y2722170 is the no-hyphen writing format of 20Y-27-22170. Buyers may search either format, so both formats can be kept on the page.

Which Komatsu models are the main references?

Common machine references include Komatsu PC200-6 and PC200-7 excavators. Final confirmation should still be based on the old carrier number, final drive structure and physical dimensions.

Can this carrier be used as a swing carrier?

Do not confirm it as a swing carrier by page title alone. This 20Y-27-22170 page should be checked as a final drive planetary carrier direction. Please compare the old part number and carrier structure before ordering.

Can nearby carrier numbers be used as replacements?

Nearby carrier or gear numbers should not be treated as automatic replacements. Similar carrier assemblies may differ by gear stage, teeth count, shaft fit, bearing position and final drive arrangement.

What photos should I send before ordering?

Please send photos of the old carrier number, gear side, shaft side, bearing seat, planetary gear set, damaged area and machine nameplate. These photos help confirm whether 20Y-27-22170 is the correct carrier assembly.