Description
Product Overview
Track drive chains in hydraulic excavators operate under some of the most demanding conditions in the roller chain application spectrum. Every machine travel movement — forward, reverse, turning — loads the final drive chain under the full machine weight multiplied by the ground reaction forces at the track shoe. On steep grades and in hard rock, this can mean peak chain loads approaching the chain’s tensile limit for brief periods. The cumulative effect is a high-frequency fatigue loading profile that eliminates ordinary roller chains from consideration in this application.
The 80HSP-00 chain meets Caterpillar’s dimensional and performance specifications for the 320 and 323 class excavators through a combination of through-hardened pin construction — hard throughout the pin cross-section, not just at the surface — and shot-peened link plates that carry compressive surface stress resisting crack initiation under tension cycling. The result is a chain rated to over 10 million fatigue cycles at the specified load amplitude, with material certificate documentation confirming the steel grade and heat treatment that delivers this performance.
80HSP-00 — high-strength roller chain for Caterpillar heavy equipment
Component List — 80HSP-00
The table below identifies all numbered components in the chain assembly. Each part can be ordered individually for field repair or as a complete assembly for full chain replacement.
| No. | Part Name | Material / Specification |
|---|---|---|
| 1 | Outer link plate | High-strength alloy steel, shot-peened |
| 2 | Inner link plate | High-strength alloy steel, shot-peened |
| 3 | Pin | Through-hardened high-strength steel |
| 4 | Bushing | Precision-hardened steel tube |
| 5 | Roller | Through-hardened steel, precision ground |
| 6 | Connecting link (outer plate) | Matching material to main chain |
| 7 | Cotter pin | High-carbon steel, pre-bent retention angle |
Key Performance Specifications
| Parameter | Value |
|---|---|
| Chain Model | 80HSP-00 |
| Pitch | — in (— mm) |
| Minimum Tensile Strength | — kN |
| Weight | approx. 3.10 kg/m |
| Fatigue Life | 10 million+ cycles |
| Material | High-strength alloy steel, shot-peened |
| Certification | CE, ISO 9001, SGS |
| Compatible Equipment | Caterpillar excavators, dozers, and tracked plant |
High-strength roller chain in heavy earthmoving equipment
Why 10 Million Fatigue Cycles Matters
The 80HSP-00 chain is rated for over 10 million fatigue cycles under its specified load conditions — a figure that directly translates to service life in heavy equipment operation. In a standard excavator duty cycle, the track drive chain completes approximately 3,000–5,000 load cycles per operating hour. At 10 million cycles, the chain’s service life under normal heavy equipment use is 2,000–3,300 operating hours before fatigue-related wear becomes the limiting factor. In practice, abrasive wear from ground contact and operating environment typically determines replacement interval before the fatigue limit is reached, making the 10 million cycle rating effectively equivalent to unlimited fatigue life for normal service conditions.
The through-hardened high-strength steel construction that achieves this rating differs fundamentally from standard roller chain pin treatment. Standard chains use case hardening — the surface layer is hardened while the core remains softer and more ductile. HSP chains use a proprietary through-hardening process where the pin cross-section is hard throughout, raising the shear failure load and eliminating the core-yield fatigue failure mode that limits standard chains under heavy cyclic loading. Shot peening of link plates and pins further raises the fatigue threshold by inducing compressive surface stress that delays crack initiation under tension cycling.
Applications in Caterpillar Equipment
Compatible Caterpillar Equipment Models
The 80HSP-00 chain is designed for direct replacement in Caterpillar-manufactured tracked equipment where the original equipment chain specification matches the pitch and dimensional requirements of the 80HSP-00. Provide your Caterpillar machine model number, serial number, and machine operating hours to our sales team — we will confirm dimensional compatibility and supply the correct chain number of links and connecting link specification for your equipment.
Components and Matching Parts We Supply
Customer Reviews
“We rebuild Cat 320 and 323 excavators and have been using HSP-00 replacement chains for two years. The dimensional accuracy is OEM-specification and the tensile certification documentation passes our rebuild quality control process. Chain life on rebuilt machines is matching the original equipment — our clients are satisfied with the rebuild quality.”
“Specified 80HSP-00 chains for our fleet of Cat 320D excavators during major overhaul. The fatigue rating and material certification were the key selection criteria — we had failures with lower-spec replacement chains from other suppliers. No failures in 18 months of operation across 12 excavators since switching to HSP specification.”
“Running 80HSP-00 in our Cat 320 and 323 hydraulic excavators on iron ore extraction duty. The 10 million cycle fatigue rating is meaningful in our application — we cycle these chains 5,000+ times per operating hour. Chain life matches what we achieve with OEM chains at substantially lower procurement cost.”
Frequently Asked Questions
Get in Touch
Ready to Place Your Order?
Send us your chain specification and annual volume. Standard enquiries receive a quotation within 2 business days.
See also: when heavy-duty chain specifications are required.
