The Track Roller, also known as Bottom Roller or Lower Roller, is a key undercarriage component installed beneath the track frame of Kobelco SK50SR crawler excavators.
The roller supports the machine operating weight, maintains track chain alignment and transfers load evenly through the undercarriage system during travelling and excavation.
For 5-ton class excavators, track rollers are exposed to:
A worn or damaged track roller may cause:
Our Kobelco SK50SR track rollers are manufactured using professional undercarriage production technology, providing reliable aftermarket replacement solutions for equipment dealers, repair workshops and machine owners.
Designed for:
Different production years may use different OEM references. Please confirm by machine serial number before ordering.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened.
Specification:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification when the correct configuration is selected.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Track Roller |
| Machine Model | Kobelco SK50SR Series |
| Compatible Models | SK50SR / SK50SR-2 / SK50SR-3 |
| Machine Class | Approx. 5 Ton Excavator |
| OEM Part Number | Confirm by machine serial number |
| 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 / Double Flange |
| Installation | OEM-Style, Bolt-on Direct Replacement |
| Application | Construction / Landscaping / Earthmoving |
| Shipping Note | Small Component — Air or Sea Freight Available |
The Track Roller, also known as Bottom Roller or Lower Roller, is a key undercarriage component installed beneath the track frame of Kobelco SK50SR crawler excavators.
The roller supports the machine operating weight, maintains track chain alignment and transfers load evenly through the undercarriage system during travelling and excavation.
For 5-ton class excavators, track rollers are exposed to:
A worn or damaged track roller may cause:
Our Kobelco SK50SR track rollers are manufactured using professional undercarriage production technology, providing reliable aftermarket replacement solutions for equipment dealers, repair workshops and machine owners.
Designed for:
Different production years may use different OEM references. Please confirm by machine serial number before ordering.
Manufactured from:
40Mn2 Alloy Steel
Advantages:
The roller tread surface is induction hardened.
Specification:
Improves resistance against:
Equipped with:
Designed to prevent:
Manufactured with:
Provides direct bolt-on replacement without modification when the correct configuration is selected.
| Item | Specification / Detail |
|---|---|
| Product Type | Excavator Undercarriage Track Roller |
| Machine Model | Kobelco SK50SR Series |
| Compatible Models | SK50SR / SK50SR-2 / SK50SR-3 |
| Machine Class | Approx. 5 Ton Excavator |
| OEM Part Number | Confirm by machine serial number |
| 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 / Double Flange |
| Installation | OEM-Style, Bolt-on Direct Replacement |
| Application | Construction / Landscaping / Earthmoving |
| Shipping Note | Small Component — Air or Sea Freight Available |
