INDUSTRY COMPONENT

Concave/Bowl Liner

Concave/Bowl liner is a critical wear component in cone crushers that shapes the crushing chamber and protects the main frame.

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Component Specifications

Definition
The concave/bowl liner is a manganese steel casting that forms the stationary crushing surface in cone crushers and gyratory crushers. It's mounted inside the upper frame (bowl) and works in conjunction with the mantle to crush rocks through compressive force. This component defines the crushing cavity geometry, directly impacting product size, capacity, and crusher efficiency. It's designed with specific profiles (standard, coarse, fine) to achieve desired particle size reduction.
Working Principle
The concave creates a fixed crushing surface against which the rotating mantle compresses feed material. As the mantle gyrates within the concave, rocks are crushed through repeated compression cycles. The liner's profile controls the nip angle and crushing gap, determining the size reduction ratio and throughput. Wear occurs through abrasion and impact, gradually changing the chamber geometry until replacement is required.
Materials
High manganese steel (11-14% Mn, 1-1.4% C), often alloyed with chromium (2-3%) or molybdenum for improved wear resistance. Heat treated to achieve austenitic microstructure with work-hardening properties. Alternative materials include martensitic steel for certain applications.
Technical Parameters
  • Weight 500-8000 kg depending on crusher size
  • Hardness 200-300 HB (as cast), up to 500 HB (work-hardened)
  • Thickness 50-200 mm
  • Service Life 200,000-1,000,000 tons depending on material and application
  • Profile Types Standard, Coarse, Fine, Extra Fine
Standards
ISO 13521:1999, DIN 1695, ASTM A128

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Concave/Bowl Liner.

cone crusher concave bowl liner replacement manganese steel liner crushing chamber parts gyratory crusher wear parts mining equipment components Concave/Bowl Liner Concave/Bowl Liner in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Crushing Chamber

The enclosed space within a primary crusher where raw materials are initially reduced in size through compression and impact.

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Cone Crusher

A compression-type crusher that reduces material size by squeezing it between a gyrating mantle and a stationary concave bowl liner.

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Engineering Analysis

Risks & Mitigation
  • Metal fatigue cracking
  • Uneven wear leading to imbalance
  • Liner loosening during operation
  • Material hardening failure in extreme conditions
FMEA Triads
Trigger: Abrasive wear from hard rock feed
Failure: Gradual thickness reduction changes crushing chamber geometry
Mitigation: Regular thickness measurements, scheduled replacement based on wear limits
Trigger: Impact overload from tramp metal
Failure: Cracking or catastrophic fracture
Mitigation: Install metal detectors, use impact-absorbing backing material
Trigger: Improper installation or torque
Failure: Liner movement causing uneven wear and potential ejection
Mitigation: Follow manufacturer torque specifications, use proper installation tools and procedures

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±2 mm on critical dimensions, ±1° on profile angles
Test Method
Ultrasonic thickness testing, hardness testing (Brinell), dimensional verification with templates, magnetic particle inspection for cracks

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

How often should concave/bowl liners be replaced?

Replacement intervals depend on material hardness, feed type, and throughput. Typically every 200,000-600,000 tons. Monitor product size and power draw for wear indicators.

Can different liner profiles be mixed in the same crusher?

No. Mixing profiles causes uneven wear, reduces efficiency, and risks mechanical damage. Always use matched liner sets from the same manufacturer.

What causes premature concave liner failure?

Common causes include improper installation, tramp metal events, excessive feed size, incorrect material selection for application, and poor maintenance practices.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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