Product Overview

The Track Roller — also known as Bottom Roller or Lower Roller — is an essential undercarriage component installed beneath the track frame of Caterpillar CAT E307 crawler excavators.

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

For 7-ton class excavators, the roller operates under demanding working conditions:

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

A worn or damaged track roller may cause:

• Track chain deviation
• Increased travelling vibration
• Abnormal crawler noise
• Uneven track wear
• Premature sprocket and idler wear

Our CAT E307 track rollers are manufactured according to OEM-style drawings, providing reliable aftermarket replacement solutions for equipment dealers, repair workshops and construction contractors.

Key Features & Benefits

Wide Compatibility

Designed for:

• CAT E307
• CAT 307
• CAT 307B
• CAT 307C
• CAT 307D

Reference OEM numbers:

• 6I-6524
• 6I6524
• 093-2027
• 127-3806

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
• Good impact resistance
• Excellent fatigue 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:

• Gravel abrasion
• Hard soil wear
• Daily operating impact

Reliable Floating Seal System

Equipped with:

• Heavy-duty floating oil seals
• High-quality bushings
• Lifetime lubrication system

Designed to prevent:

• Grease leakage
• Dust intrusion
• Water contamination

OEM-Style Direct Replacement

Manufactured with:

• Accurate roller diameter
• Correct shaft dimensions
• Standard mounting structure

Provides direct bolt-on replacement without modification.

Technical Specifications

Why Trust Our Undercarriage Solutions?

For CAT E307, reliable undercarriage components are essential to maintain machine travelling performance and reduce operating costs.

A quality track roller helps:

• Maintain track alignment
• Reduce vibration
• Extend track chain service life
• Protect sprocket and idler components
• Reduce maintenance frequency

Every roller produced by our factory undergoes strict quality inspection:

• Raw material inspection
• Heat treatment verification
• Dimensional accuracy checking
• Seal performance testing

With professional manufacturing capability for excavator undercarriage parts, we provide OEM-compatible replacement solutions with stable quality, competitive pricing and warranty support.

Contact us with your machine model, serial number, OEM part number and roller position to confirm the correct replacement.