The Track Roller, also known as Bottom Roller or Lower Roller, is an important undercarriage component installed beneath the track frame of Sumitomo SE75 crawler excavators.
The roller carries the machine operating weight, supports the track chain and maintains correct crawler alignment during travelling and excavation operations.
For 7-ton class excavators, track rollers operate under demanding working conditions:
A worn or damaged track roller may cause:
Our Sumitomo SE75 track rollers are manufactured with professional undercarriage production technology, providing reliable aftermarket replacement solutions for equipment dealers, repair workshops and machine owners.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Track Roller |
| Machine Model | Sumitomo SE75 Excavator |
| Applicable Machine Weight | Approx. 7 Ton Class |
| Roller Structure | Heavy-duty Steel Body with Precision Machining |
| Material Grade | 40Mn2 Alloy Steel |
| Manufacturing Process | Forging / Casting + CNC Machining |
| Heat Treatment | Induction Hardening |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm-10mm |
| Seal System | Heavy-duty Floating Oil Seal |
| Lubrication System | Lifetime Internal Lubrication |
| Bearing Structure | Hardened Shaft + Wear-resistant Bushing |
| Quality Inspection | Dimension, Hardness and Sealing Inspection |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Installation | OEM Standard, Bolt-on Direct Replacement |
| Shipping Note | Small Component — Air or Sea Freight Available |
The Track Roller, also known as Bottom Roller or Lower Roller, is an important undercarriage component installed beneath the track frame of Sumitomo SE75 crawler excavators.
The roller carries the machine operating weight, supports the track chain and maintains correct crawler alignment during travelling and excavation operations.
For 7-ton class excavators, track rollers operate under demanding working conditions:
A worn or damaged track roller may cause:
Our Sumitomo SE75 track rollers are manufactured with professional undercarriage production technology, providing reliable aftermarket replacement solutions for equipment dealers, repair workshops and machine owners.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Track Roller |
| Machine Model | Sumitomo SE75 Excavator |
| Applicable Machine Weight | Approx. 7 Ton Class |
| Roller Structure | Heavy-duty Steel Body with Precision Machining |
| Material Grade | 40Mn2 Alloy Steel |
| Manufacturing Process | Forging / Casting + CNC Machining |
| Heat Treatment | Induction Hardening |
| Surface Hardness | HRC 52-58 |
| Hardening Depth | 5mm-10mm |
| Seal System | Heavy-duty Floating Oil Seal |
| Lubrication System | Lifetime Internal Lubrication |
| Bearing Structure | Hardened Shaft + Wear-resistant Bushing |
| Quality Inspection | Dimension, Hardness and Sealing Inspection |
| Flange Type | Single Flange (SF) / Double Flange (DF) |
| Installation | OEM Standard, Bolt-on Direct Replacement |
| Shipping Note | Small Component — Air or Sea Freight Available |
