20T-60-72120 TM06 9-Hole Final Drive Motor for Komatsu Mini Excavator

20T-60-72120 TM06 9-Hole Travel Motor for Komatsu Mini Excavator

The 20T-60-72120 TM06 travel motor is supplied for Komatsu mini excavator final drive and travel drive system repair. It is commonly searched as 20T-60-72120, 20T6072120, TM06 travel motor, 9-hole travel motor, final drive motor, travel motor assembly or travel gearbox with motor for Komatsu PC45, PC50, PC55 and PC56 machine references.

This page focuses on 20T-60-72120 as the main part number. 20T6072120 is the no-hyphen search format. Final fitment should be confirmed by the old motor number, TM06 model, 9-hole mounting structure, sprocket teeth, shaft type, hydraulic port layout, gearbox connection and machine information before ordering.

9-Hole TM06 Travel Motor Identification

This product should be checked as a TM06 9-hole final drive travel motor. Similar TM06 travel motors may have different mounting hole counts, sprocket teeth, shaft dimensions, port directions, gearbox structures or machine applications.

Do not select the replacement travel motor by the TM06 base model alone. The old part number, hole count, mounting face, sprocket connection, hydraulic port position and gearbox layout should be compared before quotation or shipment.

The 9-hole structure is the key identification point of this page. If your old unit is a 12-hole TM06 travel motor or carries another part number such as 401-00023A, please check it separately instead of treating it as the same replacement.

Machine Reference for Komatsu Excavators

Common machine references for this 20T-60-72120 travel motor include Komatsu PC45, PC45-1, PC50, PC50UG-2, PC50UD-2, PC55 and PC56 mini excavators.

Machine model alone is not enough for final confirmation. Travel motor and final drive assemblies may vary by serial number range, undercarriage version, sprocket connection, gearbox structure and previous repair history. The removed travel motor and old part number are more reliable than the model name alone.

For accurate ordering, compare the removed travel motor with the replacement unit before shipment. Photos of the old motor tag, mounting face, hole count, sprocket side, hydraulic port side, gearbox side and machine nameplate are useful for confirmation.

Part Number and Reference Notes

20T-60-72120 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.

20T6072120 is the no-hyphen writing format of 20T-60-72120. Buyers may search either format, so both formats can be kept on the page.

Do not mix 401-00023A or other TM06 12-hole references into this page. Those references should be handled on the separate 12-hole TM06 page. Keeping 20T-60-72120 and the 9-hole structure together helps avoid wrong orders and keeps the page topic clear for search engines.

How to Confirm the Correct Travel Motor

Travel motors can look similar in product photos, but small differences in mounting face, hole count, sprocket connection, gearbox structure and hydraulic port layout may affect installation. Please compare the removed unit before ordering.

• Confirm whether the old part number is 20T-60-72120 or 20T6072120.

• Check whether the removed unit is a TM06 9-hole travel motor.

• Compare the mounting hole count, bolt pattern and flange shape.

• Check the sprocket teeth, shaft structure and gearbox connection.

• Compare the hydraulic port direction and hose connection layout.

• Send photos of the old motor tag, mounting face, hole count, sprocket side, hydraulic port side and machine nameplate before quotation if you are not sure.

Common Travel Motor Failure Symptoms

A final drive travel motor may need inspection or replacement when the excavator has weak travel power, one side moving slower than the other, oil leakage around the shaft seal or port area, abnormal grinding noise, poor travel response or repeated travel drive failure.

Before replacing the travel motor, inspect the complete travel drive system. Travel weakness may also come from hydraulic pump output, pilot pressure, control valve leakage, final drive gear damage, track tension, sprocket wear or contaminated hydraulic oil.

If the old travel motor failed because of contaminated oil, damaged final drive gears, blocked filter, incorrect installation or excessive undercarriage load, the root cause should be corrected before installing the replacement unit. Otherwise, the new travel motor may fail again.

Installation and Testing Notes

Before installation, clean the travel drive area and inspect the final drive gearbox, sprocket, hydraulic hoses, case drain line and mounting face. Do not install the replacement travel motor into a contaminated or damaged final drive system.

After installation, fill or check the gearbox oil according to the repair procedure. Bleed the hydraulic circuit where required and test travel operation at low speed before full-load work.

If the machine still travels weakly after replacement, inspect the pump output, pilot signal, control valve, case drain flow, track tension and final drive gear condition before assuming the new travel motor is defective.

Buying Notes for Repair Shops and Parts Distributors

For repair shops, this 20T-60-72120 / 20T6072120 TM06 9-hole travel motor is suitable for Komatsu mini excavator travel drive repair when the old unit is worn, leaking, noisy or unable to provide stable travel power.

For parts distributors, it can be supplied as a Komatsu PC45, PC50, PC55 and PC56 travel motor reference for repair demand. Topvelsun supports small repair orders and bulk inquiries. Please send the required quantity, old motor number, machine model, serial number and photos of the old travel motor from multiple angles.

FAQ

What is the main product on this page?

This page is for the 20T-60-72120 / 20T6072120 TM06 9-hole final drive travel motor used for Komatsu mini excavator travel drive repair.

Is 20T6072120 the same search format as 20T-60-72120?

20T6072120 is the no-hyphen writing format of 20T-60-72120. 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 PC45, PC45-1, PC50, PC50UG-2, PC50UD-2, PC55 and PC56 mini excavators. Final confirmation should still be based on the old motor number, 9-hole structure and physical layout.

Can this page use 401-00023A as a reference number?

No. 401-00023A should not be used on this 9-hole 20T-60-72120 page. It should be handled on the separate TM06 12-hole page to avoid mixing different travel motor structures.

Can I confirm this travel motor by TM06 model only?

No. TM06 is only the base model reference. Please also check the old part number, 9-hole mounting structure, sprocket teeth, shaft type, gearbox connection, hydraulic port layout and machine serial number.

What photos should I send before ordering?

Please send photos of the old motor tag, mounting face, hole count, sprocket side, hydraulic port side, gearbox side and machine nameplate. These photos help confirm whether 20T-60-72120 is the correct TM06 9-hole travel motor.