Bolt Assembly: Temperature Range -40°C to +150°C

Component Specifications

Definition

A specialized bolt assembly designed for vibration isolation mounts in industrial machinery, consisting of a high-strength bolt, washers, and locking elements that maintain structural integrity while allowing controlled movement to absorb and dampen vibrations. This component ensures secure attachment between machinery and foundations while preventing vibration transfer that could cause equipment damage or operational issues.

Working Principle

The bolt assembly works by providing a rigid connection that maintains structural alignment while incorporating design features (such as elastic washers or specialized threads) that allow micro-movements to dissipate vibrational energy. The assembly transfers static loads while filtering dynamic vibrations through controlled deformation of specific elements, preventing resonance and reducing transmitted forces to surrounding structures.

Materials

High-strength alloy steel (typically Grade 8.8 or 10.9), stainless steel (A2/A4 grades for corrosive environments), or specialized vibration-damping alloys; washers may include spring steel, bronze, or polymer composites for damping properties.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	40-200 mm
Proof Load	640-900 MPa
Thread Size	M8 to M24
Tensile Strength	800-1000 MPa
Surface Treatment	Zinc plating, hot-dip galvanizing, or phosphate coating
Temperature Range	-40°C to +150°C
Vibration Damping Capacity	60-85% reduction in transmitted vibrations

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 898-1, ISO 4014, ISO 4017, DIN 931, DIN 933, DIN 6914

Parent Products

This component is used in the following industrial products

Vibration Isolation Mounts

Mechanical components that reduce vibration transmission between a vibratory drum and its supporting structure.

View Product Details

Engineering Analysis

Risks & Mitigation

Loosening due to vibration
Fatigue failure from cyclic loading
Corrosion in harsh environments
Improper installation torque
Compatibility issues with mount materials

FMEA Triads

Trigger: Insufficient preload or improper torque application
Failure: Bolt loosening leading to increased vibration transmission and potential equipment misalignment
Mitigation: Use calibrated torque wrenches, follow manufacturer torque specifications, implement regular torque checks, and use thread-locking compounds where appropriate

Trigger: Material fatigue from continuous vibration exposure
Failure: Crack propagation and eventual bolt fracture
Mitigation: Select appropriate material grades with high fatigue strength, implement regular inspection schedules, replace at recommended intervals, and ensure proper load distribution

Trigger: Corrosive environment without proper protection
Failure: Reduced cross-sectional area and strength degradation
Mitigation: Use corrosion-resistant materials (stainless steel, coated alloys), apply protective coatings, implement environmental controls, and conduct regular corrosion inspections

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Thread tolerance: 6g for external threads, 6H for internal threads; Length tolerance: ±1.5mm; Straightness: 0.5mm per 100mm

Test Method

Vibration testing per ISO 10816, torque-tension testing per ISO 16047, fatigue testing per ISO 3800, corrosion resistance testing per ISO 9227

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Bolt Assembly

Manufacturer profiles associated with Bolt Assembly.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What makes vibration isolation bolt assemblies different from standard bolts?

Vibration isolation bolt assemblies incorporate specialized design features such as elastic washers, controlled thread profiles, or integrated damping elements that allow micro-movements to dissipate vibrational energy while maintaining structural integrity, unlike standard bolts that provide rigid connections.

How often should vibration isolation bolt assemblies be inspected?

Inspect every 3-6 months in normal operating conditions, or more frequently in high-vibration environments. Check for loosening, corrosion, deformation, or wear on damping elements, and retorque if necessary following manufacturer specifications.

Can standard bolts be used instead of specialized vibration isolation assemblies?

No, standard bolts lack the damping characteristics and controlled movement capabilities needed for effective vibration isolation. Using standard bolts may lead to premature equipment failure, increased vibration transmission, and potential safety hazards.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Bolt Assembly