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For KATO HD700 HD820 Track Recoil Spring Excavator Parts

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for komatsu pc20 track recoil spring excavator parts

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Item Info:

Product Apply To: KATO HD700 HD820
Product Brand: FL
Original Product Brand: KATO
Part Name: Track Recoil Spring

Features:

Never Oil Leakage
Reinforced Structural Reliability
Resist To Deformation
Enhanced Durability
Warranty 12 Months

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Description

Product Maker:	Fulian Machinery Co., Ltd.
Production Capacity:	50000 PCs/Month
Quality Certification:	ISO 9001:2008
OEM/ODM Orders:	Accept
Delivery Port:	Xiamen, Guangzhou, Ningbo…(Any Port in China)
Lead Time:	24-48 Working Hours for In-Stock Products (25-45 Days for Bulk Orders)

Product Description

The Excavator Track Adjuster Spring, also called track recoil spring or track tensioner spring, is an essential undercarriage component used to absorb impact and maintain proper track tension in crawler machines. This single spring design is built from high-strength alloy steel, heat-treated for durability, and tested for over 500,000 compression cycles. It ensures smooth track movement, prevents derailment, and protects other undercarriage parts such as idlers, sprockets, and rollers.

Key Features

High-Strength Material – 60Si2Mn alloy spring steel with shot peening treatment for fatigue resistance
OEM Standard Performance – Direct replacement for CAT, Komatsu, Hitachi, Volvo, and Doosan track recoil springs
Heavy Load Capacity – Handles continuous compression force under 35 MPa hydraulic cylinder pressure
Extended Service Life – Resists cracking, deformation, and sagging even in mining and quarry environments
Precision Heat Treatment – Oil-quenched and tempered for uniform hardness and elasticity

Technical Parameters

Parameter	Specification
Material	60Si2Mn Alloy Steel
Coil Diameter	22 – 30mm (Customizable)
Free Length	480 – 720mm
Max Compression Load	>120 kN
Heat Treatment	Oil Quenched + Tempered
Fatigue Life	>500,000 Cycles

Applications

Maintains correct track tension when combined with hydraulic track adjuster cylinder
Absorbs impact forces from rocky or uneven terrain
Prevents track slack and reduces risk of derailment
Minimizes wear on undercarriage parts such as idlers, sprockets, and bottom rollers
Ideal for mining, forestry, road building, and heavy-duty excavation projects