Gyratory Crusher Concave Segments
Jiangxi Duma Machinery Manufacturing Co., Ltd. is one of the most credible manufacturers and suppliers of gyratory crusher concave segments in China. Welcome to buy discount gyratory crusher concave segments in stock here and get quotation from our factory. We also accept customized orders.
Duma Machinery is a professional manufacturer of Gyratory Crusher Concave Segments (Concave Liners) for primary gyratory crushers. We supply OEM-compatible replacement concave segments engineered for heavy-duty mining operations, including copper, iron ore, gold, and hard rock applications. Our gyratory concave segments are designed to match the original crusher geometry while delivering extended wear life, stable throughput, and reliable performance under extreme impact conditions.
The Gyratory Crusher is the powerhouse of primary crushing, handling the largest run-of-mine feed. The Concave Segments (Fixed Liners) are critical wear components that line the crushing chamber. Unlike smaller cone crushers, gyratory concaves are typically designed in multiple tiers (rows) of segments to accommodate the massive size of the machine and facilitate easier installation.
Duma Machinery manufactures high-performance Gyratory Crusher Concave Segments engineered to withstand extreme impact and maintain a consistent throughput capacity. Utilizing our advanced foundry capabilities and High Manganese Steel technology, we deliver replacement parts that match or exceed OEM lifespan specifications for major global crusher brands.
Why Choose Duma Machinery as Your Gyratory Crusher Concave Segments Manufacturer?
Optimized Metallurgy
We utilize modified high manganese steel grades such as Mn18Cr2 and Mn22Cr2, which are widely used in primary gyratory crusher applications. These alloys are solution-treated and water-quenched to ensure a stable austenitic structure, allowing rapid work-hardening under high-impact crushing conditions while maintaining a tough core.
01
Precision Fitment
Gyratory concaves rely on precise tiered installation. Duma uses 3D Laser Scanning to capture exact dimensions, ensuring our segments fit perfectly with your existing spider and bottom shell, reducing installation time and backing compound usage. Accurate fitment is critical for tiered concave installations in large gyratory crushers, as even small dimensional deviations can cause uneven wear or installation delays.
02
Tiered Design Customization
Whether your crusher uses a single row or multiple rows (Upper, Middle, Lower), we supply complete sets or individual replacement segments tailored to your specific wear profile.
03
Massive Capacity
With an annual capacity of 10,000+ tons and single-piece casting capability up to 10 tons, we can handle the largest gyratory segments on the market.
04
Technical Specifications
Material selection is critical for gyratory crusher concave liners, as different ore types and impact levels require specific manganese steel grades to balance wear resistance and toughness.
Our concave segments are cast in accordance with ASTM A128 standards and optimized for specific mining conditions (e.g., Copper, Iron Ore, Gold).
| Grade | Material Name | Mn (%) | Cr (%) | C (%) | Application Focus |
| Mn13Cr2 | Standard Manganese | 11-14 | 1.5-2.5 | 1.1-1.3 | General primary crushing applications. |
| Mn18Cr2 | High Performance | 17-19 | 1.5-2.5 | 1.1-1.3 | Most popular choice. Excellent balance of impact toughness and wear life. |
| Mn22Cr2 | Ultra-High Manganese | 21-23 | 1.5-2.5 | 1.1-1.3 | Extreme impact conditions / Hard rock mining. |
| Custom | Modified Alloy | Customized | Customized | Customized | Tailored for high-abrasion or specific ore types. |
Applications of Gyratory Crusher Concave Segments
Duma Machinery gyratory concave segments are widely used in primary crushing stages across various mining and industrial applications, including:
These applications typically involve large feed sizes, high impact forces, and continuous operation, requiring concave liners with excellent toughness and consistent wear characteristics.
Supported Crusher Series (Replacement Parts)
Metso / Nordberg: Superior MK-II, MK-III Series (e.g., 42-65, 50-65, 54-75, 60-89, 60-110).
FLSmidth / Fuller-Traylor: NT, T, TC Series.
Sandvik: CG Series (e.g., CG810, CG820, CG850).
ThyssenKrupp (TK): KB Series.
Note: All trademarks are owned by their respective manufacturers; Duma supplies compatible replacement parts.
Production Process
All gyratory concave segments are manufactured in Duma's in-house foundry, allowing full control over casting quality, heat treatment, and final inspection.
Ensuring the reliability of a primary crusher requires uncompromising quality control. At Duma Machinery:
Pattern Making
We maintain a library of 4000+ molds. New patterns are CNC-machined for absolute precision.
Heat Treatment
A critical step for manganese steel. We employ precise Water Quenching and solid solution treatment to ensure the austenitic structure is stable and tough.
Strict Inspection
- Dimensional Check: Verified against OEM drawings.
- NDT Testing: Ultrasonic (UT) and Magnetic Particle (MT) testing to ensure no internal voids or cracks.
- Hardness Testing: Ensuring correct Brinell hardness range.
Duma Machinery
About Duma Machinery Established in 2010, Jiangxi Duma Machinery Manufacturing Co., Ltd. is a premier manufacturer of heavy-duty crusher wear parts. With a 47,000 sqm facility and ISO 9001 certification, we specialize in delivering cost-effective, high-quality replacement parts to the global mining and aggregate sectors. Our commitment to US Standards and precision casting makes us the trusted partner for your primary crushing needs.
FAQ
Q: Can you manufacture concave segments based on my worn samples?
A: Yes. We have an engineering team equipped with 3D scanners. We can scan your existing segments (even if worn) or the crusher frame on-site to reverse-engineer a perfect drawing for manufacturing.
Q: Do you supply the Mantle (Mantle Core) as well?
A: Yes, we provide the complete wear package for Gyratory crushers, including the Mantle (one-piece or segmented), Concave Segments, and Spider Cap accessories.
Q: What is the lead time for a full set of Gyratory Concaves?
A: Due to the large size, lead times typically range from 35 to 60 days, depending on the specific model and current casting schedule. We recommend planning inventory in advance.
Q: How do you ensure the segments fit during installation?
A: We perform a "pre-assembly" or strict dimensional check on the ground before shipping to ensure the radius and arc lengths of the segments form a perfect circle.
Q: How do I choose the right manganese grade for my gyratory concave segments?
A: Grade selection depends on ore hardness, abrasiveness, and impact level. Mn18Cr2 is suitable for most primary crushing applications, while Mn22Cr2 is recommended for extremely hard rock and high-impact conditions.
Q: What is the typical service life of gyratory crusher concave segments?
A: Service life varies depending on ore type, crusher settings, and operating conditions. Duma concave segments are designed to meet or exceed OEM wear life when installed and operated under proper conditions.
Q: Are Duma concave segments interchangeable with OEM parts?
A: Yes. Duma manufactures OEM-compatible replacement concave segments that match original geometry, installation method, and material specifications for major gyratory crusher brands.
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