Metso C3054 Movable Jaw Engineering: 2-Ton Mn18Cr2 Quarry Profile Casting for High-Impact Crushing
- Material: Manganese-Chromium alloy (Mn18Cr2)
- Hardness: 220-250 HB (work-hardens to 600 HB)
- Ridge Configuration: Parallel wear bars with 10-15mm depth
- Impact Resistance: 170J/cm² at -30°C
- Part Name: Jaw Plates Set
库存 182 件
PRODUCT
Description
Metso C3054 Movable Jaw Plate (N11952795): “Quarry” Profile Kinematics & 2-Ton Mn18Cr2 Integrity
In the Metso C3054 (Nordberg C Series) crushing circuit, the Movable Jaw Plate (Part Number N11952795) acts as the primary kinetic interface for comminution. Weighing precisely 1997.1 kg, this component is not merely a wear liner; it serves as a dynamic mass that must withstand cyclic compressive stresses exceeding 320 MPa while maintaining inertial balance within the pitman assembly. The “Quarry” designation refers to a specific tooth profile optimized for abrasive feed materials (Silica content > 15%) and high reduction ratios typical of primary aggregate production.
This technical analysis dissects the engineering attributes of the N11952795 casting. We examine the strain-hardening kinetics of the Mn18Cr2 alloy under 2-ton impact loads, the necessity of matched-pair profiling for even wear distribution, and the precision machining required to protect the pitman face from fretting corrosion.
“Quarry” Profile Engineering: Grip and Flow Dynamics
The tooth geometry of the N11952795 is engineered to solve specific crushing challenges:
- Nipping Angle Optimization: The C3054 relies on a nipping angle (typically 20-22 degrees) to fracture rock. The “Quarry” profile features straight-line ridges with a depth of 14-18mm. This aggressive texture maintains friction against smooth river gravel or blasted rock, preventing “pop-outs” during the compression stroke.
- Force Concentration: By utilizing parallel wear bars, the contact surface area is reduced compared to flat plates. This increases the localized point pressure ($P = F/A$), allowing the crusher to fracture competent rock (UCS > 250 MPa) with less energy input.
- Fines Evacuation: The valley geometry between ridges is designed to channel fines (< CSS) through the chamber vertically, reducing hydraulic packing forces that can overstress the toggle plate and main bearings.
Metallurgical Specification: Mn18Cr2 for High-Impact Loads
Casting a monolithic 2-ton component requires sophisticated metallurgical control to prevent centerline shrinkage. We utilize a modified Mn18Cr2 (ASTM A128 Grade C) chemistry.
| Element / Property | Specification Value | Technical Significance |
|---|---|---|
| Manganese (Mn) | 17.5 – 19.5% | Stabilizes austenite; ensures deep work-hardening capability. |
| Chromium (Cr) | 1.8 – 2.5% | Precipitates chromium carbides to increase yield strength. |
| Carbon (C) | 1.15 – 1.25% | Critical C/Mn ratio > 10 prevents brittle fracture. |
| Initial Hardness | 220 – 250 HBW | Ductile state for secure installation. |
| Work-Hardened Hardness | 550 – 600 HBW | Achieved under high-impact loading (>200 MPa). |
Work-Hardening Kinetics:
The Mn18Cr2 alloy is supplied in a solution-annealed state. Under the immense crushing forces of the C3054, the surface lattice structure transforms from austenite to martensite. This results in a surface hardness of up to 600 HBW (approx. 56 HRC), providing exceptional resistance to sliding abrasion. Crucially, the core remains ductile (>170 J/cm² impact energy) to absorb shock loads without catastrophic cracking.
Manufacturing Precision: Back Face & Wedge Fitment
The interface between the 2-ton movable jaw and the pitman is the most critical mechanical junction in the crusher.
Machined Back Surface (Ra 12.5):
We machine the back of the N11952795 plate to a flatness tolerance of 0.3mm per linear meter.
Engineering Necessity: The C3054 pitman face is a precision-machined steel component. If the manganese jaw plate is rough (as-cast), it creates point contacts. Under the 300+ MPa crushing load, the plate flexes and micromoves, causing fretting wear that gouges the pitman. A machined back ensures 100% surface contact, transmitting loads evenly and acting as a sacrificial shield.
Matched-Pair Configuration:
For optimal performance, we recommend installing matched pairs (Fixed and Movable). The “Quarry” profile ridges are designed to align (valley-to-peak) to create a tortuous path for the rock, enhancing the breaking action. Mismatched profiles can lead to uneven nip angles and localized wear zones.
Technical Specifications Data
| Parameter | Specification Value | Standard / Note |
|---|---|---|
| OEM Part Number | N11952795 | Movable Jaw, “Quarry” Profile |
| Component Weight | 1997.1 kg (±1.5%) | Verified Scale Weight |
| Material Designation | Mn18Cr2 | ASTM A128 Grade C |
| Tensile Strength ($R_m$) | ≥ 800 MPa | ISO 6892-1 |
| Yield Strength | ≥ 350 MPa | Resistance to Plastic Flow |
| Impact Toughness | ≥ 170 J/cm² @ -30°C | Charpy U-Notch (Low Temp) |
| Mounting Surface | Fully Machined | Flatness 0.3mm/m |
Total Cost of Ownership (TCO) Analysis
Replacing a movable jaw on a C3054 is a major logistical event requiring heavy lifting equipment and significant downtime.
Generic Mn13 Plate:
– Lower wear life (approx. 500 hours in granite).
– Poor dimensional fitment risks damaging the pitman face.
Premium N11952795 (Mn18Cr2):
– Extended wear life (approx. 750+ hours).
– Precision machining protects the capital asset (pitman).
The cost of pitman repair (machining or replacement) far exceeds the price premium of a high-quality casting. The N11952795 is an investment in crusher availability.
Engineer’s Advice: Field Operations & Maintenance
[Option B: Pro-Tip] – The “Shim” Inspection Protocol:
Before installing the new N11952795 plate, thoroughly clean and inspect the pitman face. If you detect wear depressions deeper than 1mm, do not install the plate directly.
Action: Use a manganese steel shim plate or crusher backing compound (epoxy) to fill the voids. Bolting a flat machined plate to a worn, concave pitman will result in the plate cracking horizontally under the first heavy load due to lack of support.
[Option C: Field Case Snippet] – Managing Plastic Flow (Mushrooming):
In high-compression applications, Mn18Cr2 will flow laterally. We’ve seen cases where the movable jaw expanded until it locked against the cheek plates.
Preventative Maintenance: Inspect the vertical gap between the movable jaw and the cheek plates weekly. If the gap closes to < 5mm, trim the edges of the jaw plate using a thermal lance or carbon arc gouging. This prevents mechanical locking and ensures the plate can be removed easily at the end of its life.
Technical Parameters of Applicable Jaw Crusher
Workshops And Warehouses
Cross-Brand Compatible
Our aftermarket casting division ensures that part N11952795 is dimensionally interchangeable with the OEM Metso C3054 specification, guaranteeing proper weight balance and wedge fitment.
| Brand | Series | Crusher Model |
|---|---|---|
| Mettso | Nordberg Jaw C series | C3054，C3055，C63，C80，C96，C105，C106，C110，C116，C120，C125，C130，C140，C145，C150，C160，C200 |
| Nordberg Bergeaud VB Series | VB46 ， VB57 ， VB67 ， VB83 ， VB93 ， VB105 ， VB108 ， VB0907 ， VB1008 ， VB1311 | |
| Sandvick | Jaw Crusher CJ series | CJ815, CJ615, CJ613, CJ612, CJ412, CJ411, CJ409, CJ211 |
| Kleemann | Mobicat Jaws series | MC100R EVO，MC110R EVO ， MC110Z EVO ，MC120Z PRO，MC125Z ， MC140Z，MC160PRR |
| SSTR Jaws series | SSTR1000，SSTR1100， SSTR1200， SSTR1250，SSTR1400， SSTR1600 | |
| Shanbao | Jaw Crusher PE series | PE150x250, PE250x400, PE400x600, PE500x750, PE600x900, PE750x1050, PE900x1200, PE100X1200, PE1200x1500, PE1500x1800. |
| Jaw Crusher PEX series | PEX250x750, PEX250x1000, PEX250x1200, PEX300x1300 | |
| Trio | CT Jaw Series | CT1030，CT1040，CT1048，CT1252，CT2036，CT2436，CT3042，CT3648，CT4073，CT4254，CT4763，CT6080，APS40 |
| Extec | QJ Mobile Crushers | C10 ，C12，QJ241，QJ341 |
| Allis Chalmers / Svedala | Allis Chalmers Superior Jaw Series | 36 x 48 Superior， 60 x 84 Superior |
| Allis Chalmers STD Jaws | 10x 24 ，15 x 24 ， 18 x 30 Model B ， 18 x 36， 24 x 36， 25 x 36 “A-1 New， 42 x 40 A1 ， 36 x 48 New ， 42 x 48 A1 ，48×60 ， 66 x 84 A1 | |
| Svedala CJ Series | CJ208，CJ209，CJ211，CJ408，CJ409，CJ411，CJ412，CJ612 ，CJ613，CJ615， CJ815 | |
| Svedala RT Series | RT6090 (24X36) ， RT75105 ( 30 x 42 ) ， RT60-120 (24 x 48 ) ， RT 80-120 (32 x 48) ， RT105-120 (42×48) ， R10580 (1050×800) | |
| Svedala Jawmaster Series | 1108HD (32 x 42) ， 1206HD (24 x 48) ， 1208HD (32×48) ， 1211HD (44 x 48 ) ， 1312HD (46×52) ， 1513HD (52×60) | |
| Terex | Jaques JW Range | JW40， JW42 ， JW45， JW55 |
| Jaques ST Range | ST36， ST42， ST47，ST48， ST54，ST60 | |
| Cedarapids JC Range | JC2236，JC3660，JC5460，JS3750，JS4552，JC5460 | |
| Cedarapids Old Range | 10×16，12×16，10×20，10×24，15×24，18×24，20x25A ， 18×30 ，10×36 ，12×36，15×36 ，18×36，20×36， 24×36，25×40，32×40，12×42，16×42，27×42，42×42，36×48， | |
| 12×48，16×48，22×48，42×48，57×48，35×54，36×60，54×60，10×72 | ||
| Finlay Mobile Jaw Series | J-960，J-1160，J-1170，J-1175，J-1480 | |
| Powerscreen Premiertrak | XA300， XA400 ， XR400 ， XA400S， XR400S， Premiertrak 600 ，XA750 | |
| BL-Pegson Premiertrack | 1100×650 ， 1100x650HA ， 1100x650HR ， 1100×800 | |
| BL-Pegson Premierplant | 900×600 ， 1100×650 ， 1100×800 | |
| BL-Pegson Stationary Jaws | 24×14 ，32×18 ， 32×22， 32×06 ， 36×20 ， 36×22 ， 36×24 ， 36×25 ，42x30B ， 42x30D ， 44×26 ，44×32 ， 48×42 | |
| Telsmith | Telsmith Old Jaw Range | 10×21，14×24，24×5，30×42，42×48 |
| Hydraulic Jaw Range | 2038, 2550, 3042, 3055, 3648, 3258, 3858, 4448, 5060 | |
| Hydra & Iron Jaw Range | H2238, H2550, H3244, H3450, H4448, H5060, H3042, H3055, H3648, H3258, H3858, ，4448IG ，5060IG, | |
| Komatsu | BR Jaw Series | BR100JG，BR200，BR210，BR300，BR350，BR380，BR500，BR550JG，BR580 |
| Chyi Meang | PJS Series | PJS800， PJS900，PJS1050，PJS100,PJS1100，PJR1350， PJS1260， PJS1400，PJS1500，CMNJS4836 |
| Comec Primary Jaw Crusher | P90.65， P900 ，P105.75 ， P1100 ，P1300 ，P1600 | |
| Comec Secondary Jaw Crusher | S800 ，S900 ，S1000 ，S1450 | |
| Goowin Barsby | Series 5 Jaws | 30″x18″，42″x24″ ，42″x30″ ，36″x6″ Granulator |
| Krupp | Jaw Range | ERC18-14 ，EB12-10 ，EB14-11 ，EB16-12，EB20-15 |
| Kawasaki | KS Series Jaws | KS-3624，KS-3018， KS-4230G，KS-4840，KS-6048， KD-4232G，KD-4842G |
| Hewitt-Robins | Jaw Range | 10×24， 18×30 ，10×36 ，12×36 ，15×36 ，20×36 ，24×36 ，30×36 ，30×42 ，12×48 ，22×48，30×48 ，36×48，42×48， 36×50 ，12×60，30×60，， 18×30 ，10×36 ，12×36 ，15×36 ，20×36 ，24×36 ，30×36 ，30×42 ，12×48 ，22×48，30×48 ，36×48，42×48， 36×50 ，12×60，30×60，48×60，30×62 |
| Lippmann | Jaw series | 2248, 2436, 3042, 3048, 3055, 3062, 3650, 3862, 4248, 5062 |
| Parker | Jaw series | Parker40x32 ， Parker 36×10 ， Parker 38×12 Stonesizer ， Parker 20×12 ， Parker16x10 ， Parker16x5 |
| Brown Lenox Kue-Ken | Jaw Series | Model 22(3 x 12) ， Model 24 (5 x 12)， Model 25 (7×12) ，Model 34 (6 x 16) ， Model 35(9 x 16)， Model 54( 8 x 24)， Model 55(10 x 24) ，Model 56 (12 x 24）Model 68 (9 x 30) ， |
| Model 69(12×39) ， Model 70 (15 x 30) ， Model 75S (20 x 30) ， Model 79 (8 x 36)， Model 80(10 x 36) Model 81(12 x 36)， Model 89 (16 x 36) ， Model 90(20 x 36) ， Model 95 (24 x 36) ， | ||
| Model 95S( 29 x 36) ， Model 104( 8 x 42) ， Model 105(10 x 42)， Model 106 (12 x 42)， Model 106S (14 x 42) ， Mode ，107 (17 x 42) ，Model 108 (20 x 42) ， Model 110(25 x 42) ， | ||
| Model 120 (30 x 42) ， Model 126(36 x 42) ，Model 145 (24 x 48) ， Model 150(36 x 48) ， Model 150A (40 x 48) ， Model 150s (42 x 48)， Model 160 (42 x 48) ， | ||
| Model 188 (26 x 60) Model 32 x 60 ， Model 200 (48 x 60) | ||
| Hitachi-Nakayama | Nakayama Primary Range | AC1410，AC2415，AC3219，AC3219B，AC4219，AC4220，AC4220B， AC482，AC6030 |
| Nakayama RC Range | SK3624，RC3624，RC4224，RC4228，RC4832，RC5042，RC6048，RS4032，RS4230 | |
| Hitachi Mobile Jaw | HR240，HR420G | |
| Fintec | Mobile Jaw crushers | 1107RJ ，1108 ，542， 570 ，640 |
| McColskey | Mobile Jaw Series | J35 ，J40， J44， J45， J50， J40V2， J45V2 ，C50 |
| Minyu | MS Jaw Series | MS2416 ， MS3020 ， MS3624 ， MS4226 ， MS4230 ， MS4832 ， MS4840 ， MS5432 ， MS6040 ， MS6048 |
| MSH Jaw Series | MSH3624 ， MSH4230 ， MSH5434 | |
| Russia | CMD/SMD Jaw Series | СМД-741 ，СМД-108，СМД-109，СМД-110，СМД 118，СМД 111，СМД 117 |
| Keestrack | Mobile Jaw Series | B3， B4 ， B5 ， B7 |
| Astec | Pioneer Standard Jaw Series | 10×16，10×20，10×24，15×24，10×30，18×30，8×36，9×36，10×36，13×36，15×36，18×36，20×36，24×36，26×40，30×42，36×42，31×44，35×46，10×47，21×48，42×48，24×49， |
| 33×50，28×54，30×55 | ||
| KPI-JCI Jaw Series | 2742 ，2650，3055，3365，4448IG，5060IG，2238H，3244H，3450H | |
| Tesab | Mobile Jaw Range | 10570, 10580, 700i, 800i, 800ie |
| Liming SBM | Liming /Vipeak PE Range | PE 400×600 ，PE 500×750 ，PE 600×900 ，PE750x1060，PE 900×1200，PE 1000×1200 |
| Shanghai Shibang /Zenith PEW Range | PEW250x1000，PEW250x1200，PEW400x600，PEW760，PEW860，PEW1100，PEW200x1300 | |
| CX Range | C6X80，C6X100，C6X110，C6X145，C6X160，C6X200，HJ98，HJ110，HJ145 | |
| Jaw Plate Corrugated | CJ Series | CJ208，CJ209，CJ211，CJ408，CJ409，CJ411，CJ412，CJ612 ，CJ613，CJ615， CJ815 |
| Universal Engineering | Universal Jaw Crusher Range | 24×36，25x40WRB，30×42，32x42WRB，12×48，22×48，32×48，36×48，44x48WRB ，32×54 ，42×50，12×60 ，50x60WRB |
*All manufacturer names, part numbers and descriptions are used for reference only. They belong to their respective OEMs. NEWREG supplies aftermarket replacement parts – independently manufactured and warranted, not OEM-originated. No affiliation with OEMs is claimed or implied.
“Authoritative Engineering Data: All critical metallurgical specifications and dimensional tolerances (e.g., ±0.05mm) are strictly governed by the master English documentation. While localized versions are provided for operational reference, the English original remains the sole binding authority for quality inspection and technical compliance.”
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