Engineered by NMS – The Ultimate Locking Assurance
Wedge Ring Assembly
Compatible with Metso HP/GP, Sandvik CH/CS Series & E Crushers
► Hydraulic Preload System
Self-energizing Taper: 7° precision angle generates 350+ MPa clamping force
Force Distribution: FEA-optimized ribs eliminate stress concentration (tested to 600 kN)
► Fail-Safe Mechanism
Dual-Lock Design: Primary wedge + secondary retention collar
Anti-Vibration: Serrated contact surfaces prevent rotation under 12g vibration
► Zero-Maintenance Operation
Corrosion Defense: HVOF-sprayed WC-Co coating (1,200+ HV)
Gall Prevention: Molybdenum disulfide embedded surface treatment
Performance Benchmark| Clamping Force | 350 MPa | 220 MPa |
| Installation Time | 18 minutes | 90 minutes |
| Reusability Cycles | 50+ | 8-12 |
| Surface Pressure | ≤80 MPa | ≥120 MPa |
▣ Eliminates Unscheduled Downtime
**** prevention of liner displacement incidents (validated in 24/7 iron ore operations)
▣ Precision Installation
Color-coded match marks ensure correct angular orientation
Torque sequence indicator eliminates over-tightening risks
▣ Lifetime Cost Reduction
No consumable parts required
Compatible with all standard liner profiles
Engineering ExcellenceMaterial Science: Vacuum-degassed 42CrMo4 steel
Heat Treatment: Quench & temper to 40-44 HRC core hardness
Geometric Tolerance: Profile deviation Thermal Stability: -40°C to 300°C without preload loss
Failure Mode Prevention▪ Liner slippage ▪ Eccentric bushing damage ▪ Hydraulic cylinder overload ▪ Crusher head wobble
Application EnvironmentsUltra-fine crushing circuits (>400 rpm eccentric speed)
Mobile crushing plants with frequent relocation
High-moisture ore processing (copper/zinc mines)
NMS Commitment to Crusher Safety
Synergizes with NMS mantles/concaves for optimized crushing chamber security.