KOMATSU DOZER D30/31 track roller ass'y/PART NUMBER:(KM388;111-30-00130;111-30-00270)DPW parts offer high quality undercarriage part-Quanzhou China dozer parts factory.
Product Specifications
Komatsu D30/31 bulldozer track roller assembly - hardened flange design
✔ Komatsu D30/D31 Compatible – Exact OEM specifications for seamless replacement
✔ Forged Alloy Steel – Heat-treated rollers for maximum wear resistance (HRC 58-62)
✔ Advanced Seal System – Triple-lip + labyrinth seals prevent debris ingress
✔ Pre-Lubricated Bearings – High-capacity tapered rollers for heavy loads
✔ Cost-Effective – 40% savings vs. OEM with same durability
DPW's undercarriage part Technical Specifications
Model Fit: Komatsu D30, D31, D31A, D31P, D37P,D37E bulldozers
Material: 42Mn2 alloy steel, induction-hardened surface
Bearing Type: Tapered roller bearing (ISO9001 compliant)
Seal Type: Triple-lip + dust labyrinth hybrid
Load Rating: 10,000+ hours in normal conditions
Why Choose DPW parts‘ D30/D31 Rollers?
✅ 30% Longer Service Life – Hardened flange edges resist spalling
✅ Vibration Reduction – Precision-balanced for smooth operation
✅ Easy Installation – Bolt-on replacement, no modifications needed
✅ Global Availability – In-stock for quick shipment
