null
CALL or TEXT (800) 909-7060

Komatsu Excavator Track Adjuster & Recoil Spring

ⓘ Click headers to sort ↕
Komatsu Excavator Track Adjuster & Recoil Spring parts list
Image Fits Model Description Part # Price Product Details
Komatsu Excavator Tractor Recoil Spring Kit -- 201-30-62310RSA See Details BR100J-1, BR100JG-1, BR100RG-1, PC60-6, PC60-7, PC70-7, PC75UU-1, PC75UU-2, PC78MR-6, PC78US-6, PC88MR-8 Recoil Spring Assembly 201-30-62310RSA
From $863.00
View Info
Komatsu Dozer Recoil Spring Assembly -- 207-30-54140DRSA See Details PC100-6, PC120-5, PC120-6, PC120-6Z, PC128US-1, PC128UU-1, PC128US-2, PC130-6, PC130-6K Track Recoil Spring Assembly 207-30-54140DRSA
From $4,071.00
View Info
Komatsu PC120-6 Excavator Recoil Spring and Adjuster Assembly -- PV3120 | Broken Tractor See Details PC120-6 Recoil Spring and Adjuster Assembly PV3120
$1,561.00
View Info
Komatsu Excavator Recoil Spring and Adjuster Assembly -- 20Y-30-29100 | Broken Tractor See Details PC150-6, PC160-6, PC180-6, PC200-5, PC200-6, PC200-7, PC210LC-6, PC220-5, PC220-6, PC228-1, PC228-2 Recoil Spring and Adjuster Assembly 20Y-30-29100
From $1,230.00
View Info
Komatsu PC300-6 Recoil Spring and Adjuster Assembly -- 207-30-68500 | Broken Tractor See Details PC300-6 Recoil Spring and Track Adjuster Assembly 207-30-68500
From $2,475.00
View Info
Komatsu Excavator Track Recoil Spring Assembly See Details PC600LC-6, PC600LC-7, PC650 Track Recoil Assembly 21M-30-14100
From $3,933.00
View Info
Komatsu PC850 Track Recoil Spring 209-30-74140RSA See Details PC850 Recoil Spring Assembly 209-30-74140RSA
From $6,278.00
View Info
Komatsu PC120-6 Excavator Track Recoil Spring -- 203-30-66250 | Broken Tractor See Details PC120-6 Recoil Spring 203-30-66250
$285.00
View Info
Komatsu PC200-6, PC220-6 Track Recoil Spring -- 20Y-30-29160 | Broken Tractor See Details PC200-6, PC220-6 Recoil Spring 20Y-30-29160
$528.00
View Info
Komatsu PC300-6 Excavator Track Recoil Spring -- 207-30-54140 | Broken Tractor See Details PC300-6 Recoil Spring 207-30-54140
From $695.00
View Info
Komatsu PC200-6, PC220-6 Track Adjuster Rod -- 20Y-30-29130 | Broken Tractor See Details PC200-6, PC220-6 Track Adjuster Rod 20Y-30-29130
$394.00
View Info
Komatsu PC160 Track Adjuster Seal Kit-- 909018 | Broken Tractor See Details PC120-6 Track Adjuster Seal Kit 909018
$80.00
View Info
Track Adjuster Seal Kit -- 909021 See Details PC200-6, PC220-6 Track Adjuster Seal Kit 909021
$60.00
View Info
Komatsu PC300-6 Track Adjuster Seal Kit -- 909022 | Broken Tractor See Details PC300-6 Track Adjuster Seal Kit 909022
$70.00
View Info
Komatsu PC78-10 track tension recoil spring assembly See Details PC78-8, PC78-10, PC88-10 Track Tension Recoil Spring 21W-30-00150
From $914.00
View Info

Track adjuster and recoil spring assemblies for Komatsu excavators, covering complete recoil spring assemblies, adjuster rods, seal kits, and combined adjuster-spring units across a wide range of PC-series and BR-series machines.

Fits Models At A Glance

  • PC60–PC88 Series: PC60-6, PC60-7, PC70-7, PC75UU-1, PC75UU-2, PC78MR-6, PC78US-6, PC78-8, PC78-10, PC88MR-8, PC88-10
  • PC100–PC130 Series: PC100-6, PC120-5, PC120-6, PC120-6Z, PC128US-1, PC128UU-1, PC128US-2, PC130-6, PC130-6K
  • PC150–PC228 Series: PC150-6, PC150LC-6K, PC160-6, PC160LC-7, PC160LC-8, PC180-6, PC200-5, PC200LC-5, PC200-6, PC200LC-6, PC200LL-6, PC200-7, PC200LC-7, PC200LC-8, PC210-6, PC210LC-6, PC210-7K, PC220-5, PC220LC-5, PC220-6, PC220LC-6, PC220LC-8, PC228-1, PC228-2, PC228UU-1
  • PC250–PC350 Series: PC250-6, PC250LC-6, PC250LC-6L, PC270LC-6LE, PC300-5, PC300LC-5, PC300-6, PC300LC-6, PC310-5, PC340-6K, PC350-6
  • PC380–PC450 Series: PC380LC-6, PC400-5, PC400LC-5, PC400-6, PC400LC-6, PC400-7, PC450-6, PC450-6K, PC450LC-6
  • PC600–PC850 Series: PC600LC-6, PC600LC-7, PC650, PC850
  • BR Series: BR100J-1, BR100JG-1, BR100RG-1, BR200J-1, BR200S-1, BR250RG-1, BR300S-1, BR350JG-1, BR500JG-1, BR550JG-1, CD110R-1, PC300HD-7L, SBR200-1

Key Notes

  • Assembly Types: Complete recoil spring assemblies, adjuster rod assemblies, combined recoil spring and adjuster assemblies, and seal kits available
  • Application: Maintains correct track tension and absorbs undercarriage shock loads to protect rollers, idlers, and sprockets
  • Seal Kits: Available for PC120-6, PC160, PC200-6, PC220-6, and PC300-6 to restore adjuster cylinder sealing
  • Fitment Verification: Cross-reference your model and serial number — some assemblies fit multiple series; others are series-specific

Why Choose Broken Tractor

  • ✅ Wide Komatsu excavator coverage from PC60 to PC850
  • ✅ Individual components and complete assemblies available
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH

Frequently Asked Questions

What does a track recoil spring do on a Komatsu excavator?

The recoil spring and track adjuster work together to keep correct track tension and absorb shock loads in the undercarriage. That cushioning helps protect the rollers, idlers, and sprockets from impact damage. Broken Tractor carries complete recoil spring assemblies, adjuster rods, combined recoil spring and adjuster assemblies, and seal kits for Komatsu PC-series excavators from the PC60 to the PC850.

What recoil spring fits a Komatsu PC200-6?

For the PC200-6 we carry the 20Y-30-29100 recoil spring and adjuster assembly, the 20Y-30-29160 track recoil spring, and the 20Y-30-29130 track adjuster rod. All three also fit the PC220-6. The PC200LC-6 is listed under a different assembly, 20Y-30-12110RSA, so compare the part number on your old unit or confirm your model and serial number with our parts team before ordering.

Can I reseal a Komatsu track adjuster instead of replacing it?

Yes. Broken Tractor offers track adjuster seal kits to restore adjuster cylinder sealing on several Komatsu excavators. Kit 909018 is listed for the PC120-6 and PC160, kit 909021 fits the PC200-6 and PC220-6, and kit 909022 fits the PC300-6. If the spring or rod itself is worn or damaged, a complete recoil spring or adjuster assembly may be the better choice.

Which track recoil spring fits a Komatsu PC300-6 excavator?

We carry the 207-30-54140 track recoil spring, the 207-30-68500 recoil spring and adjuster assembly, and the 207-30-74141RSA recoil spring assembly for the PC300-6. The 207-30-74141RSA assembly also fits the PC250-6, PC250LC-6, PC300LC-6, PC310-5, PC340-6K, and PC350-6. Some assemblies fit multiple series and others are series-specific, so call (800) 909-7060 with your model and serial number if you are unsure which one you need.

Do you carry recoil spring assemblies for large Komatsu excavators like the PC400 and PC850?

Yes. The 208-30-54140RSA recoil spring assembly fits the PC380LC-6, PC400-5, PC400LC-5, PC400-6, PC400LC-6, PC400-7, PC450-6, PC450-6K, and PC450LC-6. For larger machines, the 21M-30-14100 assembly fits the PC600LC-6, PC600LC-7, and PC650, and the 209-30-74140RSA assembly fits the PC850. Match the part number on your existing assembly to be sure of fitment.

Privacy Policy | Terms & Conditions

Building Quality Since 2006  |  Copyright © 2026 Broken Tractor LLC - All Rights Reserved


Product: Category: Komatsu Excavator Track Adjuster & Recoil Spring Brand: Head Title: Komatsu Excavator Track Adjuster & Recoil Spring | Broken Tractor