Product Overview

The Track Roller, also known as Bottom Roller or Lower Roller, is an important undercarriage component installed beneath the track frame of Hitachi RH30 crawler excavators.

The roller supports the machine weight, maintains track chain alignment and ensures stable crawler movement during travelling and excavation operations.

For compact excavators, track rollers are exposed to:

• Continuous loading
• Uneven ground 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 Hitachi RH30 track rollers are manufactured with professional undercarriage production technology to provide reliable aftermarket replacement solutions for equipment dealers, repair workshops and machine owners.

Key Features & Benefits

Compact Excavator Heavy-Duty Design

Designed for:

• Hitachi RH30
• Small crawler excavator applications

Suitable for:

• Construction maintenance
• Landscaping projects
• Agricultural applications
• Rental equipment fleets

Single & Double Flange Options

Available configurations:

• Single Flange (SF)
• Double Flange (DF)

Suitable for different track frame positions.

High Strength Alloy Steel Construction

Manufactured from:

40Mn2 Alloy Steel

Advantages:

• High load-bearing strength
• Good impact resistance
• Excellent wear resistance
• Long service life

Advanced Heat Treatment

The roller tread surface is induction hardened:

• Surface hardness: HRC 50-58
• Hardening depth: 5mm-10mm

Improves resistance against:

• Soil abrasion
• Gravel impact
• Daily operating wear

Reliable Floating Seal System

Equipped with:

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

Designed to prevent:

• Grease leakage
• Dust intrusion
• Water contamination

OEM-Style Direct Replacement

Manufactured with:

• Accurate roller dimensions
• Correct shaft specifications
• Standard mounting design

Provides direct bolt-on replacement without modification.

Technical Specifications