Heavy-Duty Arm Bushing for Single-Cylinder Cone Crushers

Precision Engineered by NMS – The Pivot Point of Reliability

Compatible with Metso HP/GP, Sandvik CH/CS Series & Equivalent Crushers

Engineering Breakthroughs

► Ultra-Low Wear Design

Material Science: Bimetallic composite structure

Outer layer: High-strength forged steel (HB 280-320)

Inner layer: Self-lubricating bronze alloy (CuZn25Al6)

Wear Rate: <0.05mm/1,000 hours in abrasive granite crushing

► Vibration Suppression

Helical Oil Grooves: Patented helix geometry maintains continuous oil film

Damping Capacity: Reduces eccentric shaft vibrations by 65% (ISO 10816-3 verified)

► Precision Alignment

CNC-machined concentricity tolerance: <0.03mm

Pre-embossed installation alignment marks eliminate mounting errors

Performance ComparisonParameterNMS BushingConventional Bushing

Max. Load Capacity	180 MPa	120 MPa
Operating Temp.	-30°C to +150°C	-10°C to +100°C
Re-lubrication Interval	800 hours	200 hours
Impact Absorption	38 Joules	22 Joules

Customer Value Proposition

▣ 72% Longer Service Life

Validated in Chilean copper mine: 14 months continuous operation vs. industry average 8 months

▣ 40-Minute Replacement

Split design with tapered locking collars eliminates hydraulic press requirements

▣ Zero Run-in Damage

Pre-lubricated with EP-2 lithium complex grease (embedded reservoir technology)

Applications

Primary & Secondary Crushing Stations

High-tonnage Aggregate Plants

Tramp Iron Recovery Systems

NMS Commitment to Crushing Efficiency
Backed by metallurgical lab reports and FEA simulation data.
Complements NMS Top Shell Assemblies & Mantle/Concave Systems.