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The High Precision Bolt Set for Metso B7150 VSI represents a critical fastening solution in vertical shaft impact crusher reliability, engineered to withstand the extreme dynamic forces generated during high-speed crushing operations.
B7150
ONA
847490
| Availability: | |
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| Quantity: | |
In VSI crushers, loose or failed fasteners are a leading cause of unplanned downtime—often resulting in costly damage to rotors, wear plates, and frame components. This bolt set addresses this challenge through precision manufacturing and high-strength materials, ensuring secure retention of critical wear parts even under cyclic loading, vibration, and temperature fluctuations. Comprising 12.9-grade alloy steel bolts and heat-treated nuts, it delivers consistent clamping force across the crusher’s most stressed connections, from rotor tips to spider assemblies.
Material Strength: Bolts forged from 12.9-grade alloy steel (tensile strength ≥1,220 MPa, yield strength ≥1,040 MPa) with nuts manufactured from quenched and tempered 42CrMo4 steel for compatible strength.
Thread Precision: Metric threads (M16 to M30) machined to 6g/6H class with ±0.01 mm tolerance on major diameter, ensuring uniform torque transfer and preventing galling during installation.
Corrosion Protection: Zinc-nickel plating (8-12 μm thickness) with chromate passivation, providing over 1,000 hours of salt spray resistance per ASTM B117 standards.
Torque Specifications: Recommended tightening torque ranges from 200 N·m (148 ft-lb) for M16 bolts to 1,800 N·m (1,328 ft-lb) for M30 bolts, validated through finite element analysis (FEA) to prevent under/over-tightening.
Component Compatibility: Direct replacement for Metso B7150 VSI fasteners, including rotor tip bolts (part number B96334150A), wear plate bolts, and spider assembly hardware.
12.9-grade bolts resist elongation under cyclic loading, maintaining clamping force even after 10,000+ crusher cycles—critical for preventing wear plate loosening that causes rotor imbalance.
Heat-treated nuts with HRc 35-40 hardness match bolt strength while preventing thread stripping during installation and removal.
Thread flanks ground to a surface finish of Ra ≤1.6 μm, ensuring uniform load distribution across threads and minimizing stress concentrations that cause fatigue failure.
Pre-applied high-temperature anti-seize compound (rated to 1,000°C) prevents thread galling and simplifies disassembly after prolonged operation in hot environments.
Zinc-nickel plating outperforms standard zinc plating by 300% in corrosion resistance, making it ideal for coastal quarries, wet mining operations, and de-icing salt-exposed sites.
Optional PTFE coating available for chemical-resistant applications, such as processing acid-bearing ores or recycled materials with alkaline residues.
Color-coded torque indicator bands on bolt heads (red for M16, blue for M20, green for M30) simplify identification of correct torque values, reducing installation errors by 25% .
Packaged in labeled kits with matched bolts, washers, and nuts—including spare hardware for common replacement points—to streamline maintenance inventory.
Crusher Critical Connections: Secures rotor tips, wear plates, and distributor cones in Metso B7150 VSI crushers, preventing component displacement during high-speed operation.
Heavy Machinery Assembly: Suitable for conveyor systems, vibrating screens, and mill liners in mineral processing plants requiring high-strength fasteners.
Mobile Crushing Units: Resists vibration-induced loosening in portable crushers used in road construction and demolition, where equipment mobility amplifies dynamic forces.
Marine and Coastal Operations: Withstands saltwater exposure in dredging and offshore mineral processing, maintaining clamping force in corrosive environments.
This bolt set combines uncompromising strength with user-centric design, ensuring the Metso B7150 VSI operates at peak reliability while reducing maintenance time and replacement costs.
In VSI crushers, loose or failed fasteners are a leading cause of unplanned downtime—often resulting in costly damage to rotors, wear plates, and frame components. This bolt set addresses this challenge through precision manufacturing and high-strength materials, ensuring secure retention of critical wear parts even under cyclic loading, vibration, and temperature fluctuations. Comprising 12.9-grade alloy steel bolts and heat-treated nuts, it delivers consistent clamping force across the crusher’s most stressed connections, from rotor tips to spider assemblies.
Material Strength: Bolts forged from 12.9-grade alloy steel (tensile strength ≥1,220 MPa, yield strength ≥1,040 MPa) with nuts manufactured from quenched and tempered 42CrMo4 steel for compatible strength.
Thread Precision: Metric threads (M16 to M30) machined to 6g/6H class with ±0.01 mm tolerance on major diameter, ensuring uniform torque transfer and preventing galling during installation.
Corrosion Protection: Zinc-nickel plating (8-12 μm thickness) with chromate passivation, providing over 1,000 hours of salt spray resistance per ASTM B117 standards.
Torque Specifications: Recommended tightening torque ranges from 200 N·m (148 ft-lb) for M16 bolts to 1,800 N·m (1,328 ft-lb) for M30 bolts, validated through finite element analysis (FEA) to prevent under/over-tightening.
Component Compatibility: Direct replacement for Metso B7150 VSI fasteners, including rotor tip bolts (part number B96334150A), wear plate bolts, and spider assembly hardware.
12.9-grade bolts resist elongation under cyclic loading, maintaining clamping force even after 10,000+ crusher cycles—critical for preventing wear plate loosening that causes rotor imbalance.
Heat-treated nuts with HRc 35-40 hardness match bolt strength while preventing thread stripping during installation and removal.
Thread flanks ground to a surface finish of Ra ≤1.6 μm, ensuring uniform load distribution across threads and minimizing stress concentrations that cause fatigue failure.
Pre-applied high-temperature anti-seize compound (rated to 1,000°C) prevents thread galling and simplifies disassembly after prolonged operation in hot environments.
Zinc-nickel plating outperforms standard zinc plating by 300% in corrosion resistance, making it ideal for coastal quarries, wet mining operations, and de-icing salt-exposed sites.
Optional PTFE coating available for chemical-resistant applications, such as processing acid-bearing ores or recycled materials with alkaline residues.
Color-coded torque indicator bands on bolt heads (red for M16, blue for M20, green for M30) simplify identification of correct torque values, reducing installation errors by 25% .
Packaged in labeled kits with matched bolts, washers, and nuts—including spare hardware for common replacement points—to streamline maintenance inventory.
Crusher Critical Connections: Secures rotor tips, wear plates, and distributor cones in Metso B7150 VSI crushers, preventing component displacement during high-speed operation.
Heavy Machinery Assembly: Suitable for conveyor systems, vibrating screens, and mill liners in mineral processing plants requiring high-strength fasteners.
Mobile Crushing Units: Resists vibration-induced loosening in portable crushers used in road construction and demolition, where equipment mobility amplifies dynamic forces.
Marine and Coastal Operations: Withstands saltwater exposure in dredging and offshore mineral processing, maintaining clamping force in corrosive environments.
This bolt set combines uncompromising strength with user-centric design, ensuring the Metso B7150 VSI operates at peak reliability while reducing maintenance time and replacement costs.
