Jaw Plates And tooth Plates
Jiangxi Duma Machinery Manufacturing Co., Ltd. is a leading OEM-standard foundry specializing in high-quality jaw plates and tooth plates for global mining and aggregate industries. With over 15 years of casting expertise and a 42,000 m² modern facility, we provide high-performance wear solutions that significantly reduce downtime. Our products are engineered to withstand the toughest crushing conditions, ensuring a perfect fit for all major crusher brands.
Request a Free Quote
Jaw plates and tooth plates are the primary contact surfaces inside a jaw crusher. A fixed jaw plate is bolted to the stationary frame, while a swing jaw plate attaches to the moving jaw. Together, they create the compressive force that fractures rock and ore as material passes through the crushing chamber.
The surface of each plate features a series of raised ridges called teeth. These teeth concentrate stress onto incoming material, reducing the force required to break rock while directing crushed product downward and out of the chamber. Tooth profile, height, and pitch are engineered differently for soft limestone, hard granite, abrasive basalt, and recycled concrete. Selecting the right profile for your application directly affects throughput and plate service life.
Material composition matters equally. High-manganese steel becomes harder as it absorbs impact. This work-hardening property means the plate surface protects itself during use, with hardness rising from approximately HB200 at installation to HB500 or above under typical crushing conditions.
Types of Jaw Plates and Tooth Profiles
Fixed Jaw Plate
Mounted to the stationary jaw frame, the fixed jaw plate bears constant compressive load throughout the crushing cycle. It is typically produced with a flatter entry profile to guide material into the chamber and is available in Mn13Cr2, Mn18Cr2, and Mn22Cr2 grades depending on rock hardness and abrasion level. View Duma fixed jaw plates.
Swing Jaw Plate
The swing jaw plate attaches to the moving jaw and carries the primary impact load. Its tooth geometry is optimized to grip and fracture incoming rock efficiently. Duma produces swing jaw plates in standard, quarry, super grip, and heavy duty tooth profiles to cover a wide range of crushing applications.
Standard Tooth Profile
Best suited for limestone, coal, and softer minerals. Provides consistent throughput and clean material release from the crushing chamber.
Quarry and Super Grip Profile
Designed for granite, basalt, and other hard abrasive rock. Taller, more aggressive teeth grip material firmly, reducing slippage and maintaining crushing efficiency as the plate wears.
Heavy Duty Profile
Used in large primary crushers processing oversized boulders or recycled concrete. Reinforced tooth geometry withstands unpredictable high-impact loads without cracking.
TIC Insert Jaw Plates
For highly abrasive ores, Duma embeds titanium carbide (TiC) inserts into the manganese steel matrix. TIC inserts extend service life significantly in extreme-wear applications where standard high-manganese grades wear too quickly to be cost-effective. View Duma TIC insert jaw plates.
Jaw Plate Specifications
| Parameter | Details |
|---|---|
| Material Grades | Mn13Cr2, Mn18Cr2, Mn22Cr2 (ASTM A128 / GB/T 13932) |
| Initial Hardness | Approx. HB180–220 |
| Work-Hardened Hardness | HB500+ under impact conditions |
| Tooth Profiles | Standard, Quarry, Super Grip, Heavy Duty |
| Plate Types | Fixed jaw plate, swing jaw plate |
| Compatible Brands | Metso (C80–C160), Sandvik (CJ411–CJ615, JM series), Terex, Powerscreen, Kleemann, Trio, Telsmith |
| Customization | OEM by drawing, reverse engineering from worn samples, custom alloy grades |
| Lead Time — Stock Items | 7–10 days |
| Lead Time — Custom Cast | 30–45 days |
| Quality Reports | Material, dimensional, heat treatment curve, metallographic report |
| Warranty | 12 months against casting defects |
Product Specification & Common Types
We support various models, including:
| Metso Compatible: | C80, C100, C110, C125, C140, C160, etc. |
| Sandvik Compatible: | CJ411, CJ412, CJ612, CJ615, JM1208, etc. |
| Custom Designs: | Fixed jaw plates, swing jaw plates, and cheek plates. |
Applications of Jaw Plates and Tooth Plates
Mining and Hard Rock Operations
In gold, copper, and iron ore mines, jaw crushers handle primary size reduction. Mn18Cr2 or Mn22Cr2 grades are standard, with TIC insert plates available for extremely high-abrasion ores.
Quarrying — Granite, Basalt, and Limestone
Quarry and super grip profiles maintain crushing pressure as the tooth surface wears, keeping throughput consistent and reducing screen oversize throughout the plate's service life.
Aggregate Production and Construction Recycling
Standard profiles suit sand and gravel operations where gradation consistency is the priority. Heavy duty profiles handle recycled concrete and demolition waste, where impact loads are less predictable.
Coal and Industrial Mineral Processing
Mn13Cr2 grade plates are the practical choice for coal, limestone, gypsum, and other softer minerals, offering sufficient toughness without over-specifying alloy cost.
Our Manufacturing Process
Why Choose Duma as Your Jaw Plate Supplier?
Direct Foundry — No Middlemen
Duma is a manufacturing entity, not a trading company. Our 42,000 m² facility houses in-house casting, heat treatment, and precision machining. Every order passes through a single production chain under our ISO 9001:2015 quality system, giving you complete process traceability and direct-factory pricing with no intermediary markup.
4,000+ Mold Inventory for Fast Turnaround
With over 4,000 sets of patterns covering major crusher brands, Duma can produce most standard jaw plate models without new tooling. This means shorter lead times and lower costs for your procurement team, particularly for repeat orders or emergency replacement situations.
Verified Metallurgical Performance
Every production batch undergoes metallographic inspection using high-magnification microscopy. We verify that the internal structure is free of continuous carbide networks, the leading cause of premature brittle fracture in high-manganese wear parts. Heat treatment curves and metallographic reports ship with every order.
Precision Dimensional Fit
Through controlled heat treatment and CMM-based dimensional inspection, Duma plates match the mounting tolerances of Metso, Sandvik, Terex, and other OEM frames to within specification. Plates install without field grinding or modification, reducing planned maintenance downtime to the minimum.
Extended Service Life
Duma jaw plates typically last 20%–40% longer than standard-grade market alternatives under comparable operating conditions. Over a full procurement year, fewer change-outs means less labor, less unplanned downtime, and a measurably lower cost-per-ton of material processed.
Flexible Order Sizes and Full Export Documentation
Duma accepts small trial orders for incoming quality verification alongside large batch supply. We ship on FOB, CIF, and EXW terms with full documentation including material certificates, dimensional reports, and heat treatment records to support customs clearance and your incoming QC process.
How to Order Custom Jaw Plates
Inquiry
Provide your crusher model, part number, or worn sample. Our team responds within 24 hours.
Quote
Receive material grade options and pricing based on your application and order volume.
Production
We send real-time updates at key production milestones: casting complete, heat treatment complete, inspection passed.
Delivery
Global shipping on FOB, CIF, or EXW terms with full technical documentation included.
Customized alloy development for specific ores.
On-site wear analysis and technical consultation.
12-month quality warranty against casting defects.
Certifications and Quality Control
Duma is ISO 9001:2015 certified. We are a trusted partner for major mining groups across Australia, South Africa, and the USA.
Frequently Asked Questions About Jaw Plates and Tooth Plates
Q: What is the best material for jaw plates?
A: High-manganese steel (Mn18Cr2 or Mn22Cr2) is best for its work-hardening properties.
Q: How long do Duma jaw plates last?
A: Depending on the rock, they usually last 20-40% longer than standard market plates.
Q: Can you customize tooth profiles?
A: Yes, we offer Quarry, Standard, and Super Grip profiles for different rock types.
Q: Do you provide OEM part numbers?
A: Yes, we have a vast database for Metso, Sandvik, and more.
Q: What is "Water Toughening"?
A: It’s a heat treatment that makes manganese steel tough and prevents it from being brittle.
Q: How do you ensure the size fits?
A: We use precision patterns and CMM inspection to ensure 100% compatibility.
Q: Is Mn22 better than Mn18?
A: For extremely hard rock, Mn22 offers better stability and wear life.
Q: Do you offer cheek plates and toggle plates?
A: Yes, we provide the full set of jaw crusher wear parts.
Q: What is your MOQ?
A: We accept small trial orders for quality testing.
Q: Can you produce based on my worn samples?
A: Yes, our engineers can reverse-engineer from worn samples.
Q: Do you ship to South America?
A: Yes, we ship globally with experienced logistics partners.
Q: How do you prevent casting cracks?
A: Through controlled cooling during casting and ultrasonic testing (UT) to detect internal defects.
Q: Why is metallographic testing important?
A: It verifies that the internal structure is predominantly austenitic, which is essential for durability.
Q: How do I know when to change my jaw plate?
A: When the tooth profile is 80% worn or crushing efficiency drops significantly.
Q: What is the typical lead time?
A: 30-45 days for production depending on the order size.
Q: Are your plates compatible with Sandvik CJ series?
A: Yes, we have standard molds for the entire CJ series.
Q: Do you use recycled scrap?
A: We only use high-quality, verified scrap with precise virgin alloy additions.
Q: Can you add TIC inserts to jaw plates?
A: Yes, for extremely abrasive materials, TIC inserts can double the life.
Q: What quality reports do you provide?
A: We provide Material, Dimension, Heat Treatment, and Metallographic reports.
Q: How do I get a quote?
A: Simply send your crusher model or part number to our sales team via the contact form.