Description
What is a Cone Crusher Eccentric Assembly?
A cone crusher Eccentric Assembly is the core rotating mechanism positioned inside the lower mainframe. Its primary critical function is to house the main shaft and convert high-speed rotational power from the drive train into the precise, high-torque gyratory motion required for aggregate reduction. By maintaining balanced kinetic momentum and stable rotational tolerances under severe multi-directional loads, a premium Eccentric Assembly ensures optimal crushing geometry, maximizes volumetric throughput (TPH), and protects the entire drive train from catastrophic mechanical failure.
Equipment Compatibility & OEM Cross-Reference
Our aftermarket replacement Eccentric Assembly modules and individual sub-parts are precision-engineered to be direct-fit upgrades for Sandvik crushers, significantly lowering your Total Cost of Ownership (TCO) while ensuring zero compatibility issues and maximum field uptime.
Product Name: Eccentric Assembly
Categories: Cone Crusher Spare Part > Eccentric Assembly
Application For Sandvik CH / CS / H / S Series Cone Crusher
Product Include: Retainer, Hub, Eccentric Wear Plate, Gear, Locating Bar, Eccentric Bushing, Eccentric Key, Ecentric
Part Number List
| Model | Part Number | Description |
|---|---|---|
| CH430/CS430 | 442.7921-01 | Eccentric |
| CH430/CS430 | 442.7802-00 | Gear |
| CH430/CS430 | Retainer | |
| CH430/CS430 | 442.7927-01 452.4188-001 | Eccentric Wear Plate |
| CH430/CS430 | 452.4191-01 452.4192-01 452.4193-01 442.7923-01 442.7924-01 442.7925-01 | Eccentric Bushing |
| CH430/CS430 | 442.7926-01 | Hub |
| CH430/CS430 | 442.7928-01 | Locating Bar |
| CH440/CS440 | 442.7151-01 442.8068-01 N11851369 | Eccentric |
| CH440/CS440 | 442.7093-00 442.9330-00 N11851173 | Gear |
| CH440/CS440 | 442.7523-01 | Retainer |
| CH440/CS440 | 442.7107-01 | Eccentric Wear Plate |
| CH440/CS440 | 442.9406-01 442.9642-01 442.9643-01 | Eccentric Bushing |
| CH440/CS440 | 442.7142-01 | Hub |
| CH440/CS440 | 442.7110-01 | Locating Bar |
| CH660/CS660 | 452.4128 | Eccentric Assembly |
| CH660/CS660 | 442.8733-01 | Eccentric |
| CH660/CS660 | 442.8723-00 | Gear |
| CH660/CS660 | 442.8801-01 442.8743-00 | Retainer |
| CH660/CS660 | 442.8761-01 | Eccentric Wear Plate |
| CH660/CS660 | 442.8824-01 442.8825-01 442.8826-01 442.9033-01 N11851516 | Eccentric Bushing |
| CH660/CS660 | 442.8729-01 | Hub |
| CH660/CS660 | 442.8762-01 | Locating Bar |
| CH870 | 452.0809-001 | Eccentric assembly |
| CH870 | BG01006290 | Eccentric |
| CH870 | 452.0530-901 452.0531-901 N11852159 452.1185-901 | Gear |
| CH870 | 452.0921-001 N11852093 | Retainer |
| CH870 | 452.0808-001 | Eccentric Wear Plate |
| CH870 | 452.0805-001 N11852086 452.0806-001 N11852085 452.0807-001 N11852084 | Eccentric Bushing |
| CH870 | 452.0516-001 N11852501 | Hub |
| CH870 | 452.0834-001 | Locating Bar |
| CH880 | 442.9245-01 | Eccentric |
| CH880 | 442.9639-00 N11851659 452.2051-901 442.9311-00 N11851582 | Gear |
| CH880 | 442.9367-01 | Retainer |
| CH880 | 442.9249-01 | Eccentric Wear Plate |
| CH880 | 442.9357-01 N11851595 442.9358-01 N11851596 442.9359-01 N11851597 442.9360-01 N11851598 | Eccentric Bushing |
| CH880 | 442.9246-01 | Hub |
| CH880 | 442.9308-02 | Locating Bar |
Main Parts of
1. Retainer
The retainer holds the eccentric assembly in place. It keeps all parts tightly fitted. Without the retainer, the assembly could loosen during operation. SUNWE makes strong retainers to handle heavy loads.
2. Hub
The hub connects the eccentric to the main shaft. It allows the eccentric to rotate smoothly. A well-made hub reduces wear and tear. SUNWE hubs are durable and fit perfectly with other parts.
3. Eccentric Wear Plate
The eccentric wear plate protects the hub from damage. It takes the force of crushing rocks. Over time, the plate wears down. SUNWE uses high-quality materials to make long-lasting wear plates.
4. Gear
The gear turns the eccentric assembly. It connects to the motor and transfers power. A strong gear ensures efficient crushing. SUNWE gears are precise and resist breaking.
5. Locating Bar
The locating bar keeps the eccentric in the correct position. It stops the assembly from moving sideways. Proper alignment improves crusher performance. SUNWE locating bars are tough and easy to install.
6. Eccentric Bushing
The eccentric bushing reduces friction between moving parts. It helps the eccentric spin smoothly. Without the bushing, metal parts would grind and wear quickly. SUNWE bushings are made from strong, low-friction materials.
7. Eccentric Key
The eccentric key locks the eccentric to the shaft. It stops the eccentric from slipping. A loose key can cause major damage. SUNWE keys are precisely shaped for a tight fit.
Core Engineering & Technical Advantages
Because the eccentric unit handles continuous, extreme torque and kinetic impact during mineral reduction, standard assemblies can suffer from structural fatigue or bearing seizure. Our premium Eccentric Assembly replacements are proudly manufactured in China to deliver unmatched heavy-duty durability:
Complete Drop-In Module: Every assembly integrates the main housing, heavy-duty gear, precision-machined hub, wear plates, and low-friction bushings, factory-matched and tested for immediate on-site installation.
High-Alloy Forged Steel: Manufactured from premium forged alloy steel to withstand massive mechanical stresses, preventing tooth shearing and structural yielding under choke-feeding conditions.
Precision CNC Gear & Bore Cutting: Gear profiles and internal bushing bores are machined to exact microscopic tolerances, ensuring a zero-defect mesh with the drive pinion and a vibration-free fit.
Advanced Dynamic Balancing: Subjected to rigorous dynamic balancing tests to guarantee rotational symmetry, eliminating parasitic chassis vibration that can damage surrounding components.
Maintenance Guidelines: When to Replace Your Eccentric Assembly
Operating a crusher with a compromised eccentric unit or worn internal components will generate severe vibrations and rapidly destroy the main shaft. We recommend thoroughly inspecting the Eccentric Assembly during major drive train overhauls:
| Inspection Focus | Warning Signs (Replace Immediately) | Best Practice Solution |
| Bore & Bushing Wear | Excessive radial play, scoring, or out-of-round deformation inside the eccentric bushing bores. | Replace the worn bushings or swap the complete assembly module to restore proper internal clearances. |
| Gear Tooth Damage | Severe pitting, spalling, or thinned teeth observed on the eccentric drive gear profile. | Inspect both the gear and pinion. If tooth profiles are severely degraded, replace the components together. |
| Structural Metal Fatigue | Hairline cracks or deep fretting detected on the hub body or outer housing during inspection. | Pull the damaged module immediately. Never attempt to weld load-bearing drive components, as they will fail under crushing loads. |
Explore More Crusher Drive Train Components
To maintain peak crushing volumetric throughput (TPH) and stable operation, ensure your maintenance inventory is stocked with fully compatible, premium parts. Browse our specific component categories:
Find precision-machined Inner Head Nut For Sandvik Cone Crusher and Main Shaft Assemblies for complete Sandvik rebuilds.
Explore our robust aftermarket spares for Sandvik CH & CS Series Crushers.
View high-performance replacement Pinion Shafts and Spherical Roller Bearings for Sandvik cone crushers.
