Hitachi ZX870 ZX870H-5B ZX870H-5G Excavator Track Roller Bottom Roller Lower Roller Undercarriage 4473720 Replacement

USD $45.00 - $100.00 / Piezas

Pedido mínimo: 1 Piezas

Product Name:: Track Roller
Part Type:: Bottom Roller / Lower Roller
Application Brand:: Hitachi
Compatible Models:: Hitachi ZX870 / ZX870H-5B / ZX870H-5G

Términos comerciales admitidos:

FOBEXW

Precio de referencia:: USD $45.00 - $100.00
Cantidad mínima de pedido:: 1 Piezas
Plazo de entrega:: in stock
Capacidad de suministro:: 10,000 Piezas
Puerto de envío:: Xiamen, China

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Product Overview

The Track Roller, also known as Bottom Roller or Lower Roller, is an important undercarriage component installed beneath the track frame of Hyundai R80 crawler excavators.

The roller carries the machine operating weight, supports the track chain and maintains correct crawler alignment during travelling and excavation operations.

For compact excavators like Hyundai R80, track rollers are exposed to:

Continuous machine loading
Uneven terrain impact
Soil and gravel abrasion
Mud and water contamination

A worn or damaged track roller may cause:

Track chain misalignment
Increased travelling vibration
Abnormal track noise
Uneven track wear
Accelerated wear of sprocket and idler

Our Hyundai R80 track rollers are manufactured with professional undercarriage production technology to provide reliable aftermarket replacement solutions for dealers, repair workshops and equipment owners.

Key Features & Benefits

Wide Compatibility

Designed for:

Hyundai R80
Hyundai R80-7
Hyundai R80-7A
Hyundai R80CR-9

Reference OEM Number:

81N1-11010

Single & Double Flange Options

Available configurations:

Single Flange (SF)
Double Flange (DF)

Suitable for different positions on the track frame.

High Strength Alloy Steel Construction

Manufactured from:

40Mn2 Alloy Steel

Advantages:

High load-bearing strength
Excellent impact resistance
Strong fatigue resistance
Extended service life

Advanced Heat Treatment

The roller tread surface is induction hardened:

Surface hardness: HRC 52-58
Hardening depth: 5mm-10mm

Improves resistance against:

Gravel abrasion
Hard soil wear
Continuous operation impact

Reliable Floating Seal System

Equipped with:

Heavy-duty floating oil seal
High-quality bushing
Lifetime lubrication system

Designed to prevent:

Oil leakage
Dust intrusion
Water contamination

OEM-Style Direct Replacement

Manufactured with:

Accurate roller dimensions
Correct shaft size
Standard mounting structure

Provides direct bolt-on replacement without modification.

Technical Specifications

Item	Specification / Detail
Product Type	Excavator Undercarriage Track Roller
Machine Model	Hyundai R80 Excavator
Applicable Machine Weight	Approx. 8 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	Heavy Component — Sea Freight Recommended