Sandvik CJ208 Stationary Jaw Engineering: M1 Coarse Profile & Mn18Cr2 Metallurgy for Primary Crushing
- Core Material: High-Grade Manganese Steel (Mn16Cr2/Mn18Cr2)
- Surface Hardness: HB210-240 (work-hardens to 550-600 HB during operation)
- Ridge Profile: Uniform 12-parallel ridge pattern with 10-14mm depth
- Operational Endurance: -30°C to 400°C temperature range
- Impact Rating: 150J/cm² impact resistance at -20°C
库存 182 件
PRODUCT
Description
Sandvik CJ208 Stationary Jaw Plate (400.3151-001): M1 Coarse Profile & Mn18Cr2 Structural Integrity
In the Sandvik CJ208 (legacy JM806) jaw crusher assembly, the stationary jaw plate (P/N 400.3151-001) serves as the static anvil for the comminution process. While the movable jaw delivers the kinetic energy, the stationary plate must endure the highest localized compressive stresses, often exceeding 350 MPa at the toe of the crushing chamber. A failure in this component—whether through premature wear, cracking, or plastic deformation—transmits damaging loads directly to the front frame crossbeam.
This technical specification outlines the engineering behind our 449.4 kg stationary jaw plates. We focus on the “M1” Coarse tooth geometry designed for high-throughput primary crushing, the Mn18Cr2 alloy work-hardening characteristics, and the precision machining required to prevent frame wash-out.
M1 Coarse Profile: Geometric Efficiency
The “M1” designation refers to a specific Coarse Corrugated tooth profile optimized for feed materials with medium to high competency.
- Nipping Angle Management: The CJ208 relies on a nipping angle of approximately 22 degrees to grip rock. The M1 profile features deep valleys (14-18mm depth) and a wider pitch compared to standard plates. This geometry maintains an aggressive grip on round river gravel or slippery blasted rock, preventing “pop-outs” where material ejects upward instead of fracturing.
- Fines Evacuation: The deep valley design provides a vertical channel for undersized material (fines < CSS) to pass through without being re-crushed. This reduces the "packing" phenomenon in the crushing chamber, lowering hydraulic pressure spikes and reducing energy consumption by up to 15%.
- Wear Metal Distribution: The stationary jaw typically wears faster at the bottom 30% due to the smaller reduction ratio at the discharge. The M1 profile concentrates mass in the tooth ridges, maximizing the usable wear volume before the plate becomes too thin for safe operation.
Metallurgical Specification: Mn18Cr2 vs. Mn13Cr2
For a 450kg casting subjected to point loading, standard Hadfield steel (Mn13) often exhibits excessive plastic flow (“mushrooming”) before it fully hardens. We utilize a modified Mn18Cr2 (ASTM A128 Grade C) chemistry.
| Property | Mn13Cr2 (Standard) | Mn18Cr2 (Premium) | Operational Benefit |
|---|---|---|---|
| Manganese Content | 11.0 – 14.0% | 17.5 – 19.0% | Increased austenite stability; delays fatigue cracking. |
| Chromium Content | 1.5 – 2.0% | 1.8 – 2.5% | Higher yield strength; resists lateral plastic flow. |
| Initial Hardness | 190 – 210 HBW | 210 – 240 HBW | Resists initial gouging during break-in period. |
| Work-Hardened Potential | 450 HBW | 550 – 600 HBW | Superior resistance to high-silica abrasion (>15% SiO2). |
Work-Hardening Kinetics:
Upon impact, the Mn18Cr2 surface undergoes a strain-induced phase transformation from austenite to martensite. This results in a surface hardness of 550-600 HBW (approx. 55 HRC), while the core retains ductility (>140 J/cm²). This differential hardness is crucial: the hard skin resists sliding abrasion, while the tough core absorbs the shock of tramp iron events without shattering.
Manufacturing Precision: The Back Face Criticality
The interface between the stationary jaw plate and the crusher frame is critical for structural longevity.
Machined Mounting Surfaces:
We machine the back of the 400.3151-001 plate to a flatness tolerance of 0.3mm per linear meter.
Why? A rough, as-cast back surface creates point contacts with the front frame. Under crushing loads, the plate will flex and micromove, acting as a file that wears down the crusher frame face. Once the frame face becomes concave, even a new flat jaw plate will bridge the gap and snap vertically under load. Our machined back ensures 100% surface contact, transmitting loads evenly and protecting the frame.
Wedge Fitment (ISO 2768-mK):
The overall length and the angle of the wedge seating faces are CNC machined to tight tolerances. This ensures the plate is securely locked by the clamping wedges, preventing vertical movement (chatter) during the return stroke of the crusher.
Technical Specifications Data
| Parameter | Specification Value | Standard / Note |
|---|---|---|
| OEM Part Number | 400.3151-001 | Stationary Jaw Plate, CJ208 / JM806 |
| Tooth Profile | M1 (Coarse Corrugated) | High throughput, general purpose |
| Component Weight | 449.4 kg (±2%) | Verified Scale Weight |
| Material Grade | Mn18Cr2 | High Manganese Steel |
| Tensile Strength ($R_m$) | ≥ 800 MPa | ISO 6892-1 |
| Impact Toughness | ≥ 150 J/cm² @ -20°C | Charpy U-Notch (AKU) |
| Dimensional Tolerance | CT11 – CT12 | ISO 8062-3 (Casting Dimensions) |
Total Cost of Ownership (TCO) Analysis
In abrasive applications (e.g., granite with >20% Quartz), Mn13 plates wear rapidly due to the “gouging” mechanism.
Life Cycle Comparison:
– Generic Mn13 Plate: 450 hours service life.
– Engineered Mn18Cr2 Plate: 680 hours service life.
While the Mn18Cr2 plate may carry a 25% price premium, it delivers a 51% increase in service life. More importantly, it reduces the frequency of high-risk maintenance events (crane lifts, wedge removal) and associated downtime costs ($3,000+ per hour).
Engineer’s Advice: Field Operations & Maintenance
[Option B: Pro-Tip] – The 50% Rotation Rule:
The stationary jaw plate wears unevenly—the bottom 1/3 wears significantly faster than the top due to the smaller CSS and higher material density.
Action: Do not wait for the bottom to wear thin. When the tooth profile at the bottom is worn to 50% of its original height, rotate the plate 180 degrees (top-to-bottom). This moves the fresh tooth profile from the top into the high-wear zone, extending the total life of the casting by 30-40%.
[Option C: Field Case Snippet] – Frame Protection with Backing:
In a site processing extremely hard ferrochrome slag, we found the front frame face was severely worn (concave). Installing a new flat plate would result in immediate cracking.
Solution: We utilized a crusher backing compound (epoxy) behind the stationary plate. The epoxy fills the voids between the worn frame and the new plate, providing a 100% solid backing. This prevented the plate from flexing and cracking, and saved the customer a $40,000 frame repair job.
Technical Parameters of Applicable Jaw Crusher
Workshops And Warehouses
Cross-Brand Compatible
Our aftermarket casting division ensures that part 400.3151-001 is dimensionally interchangeable with the OEM Sandvik specification for CJ208 / JM806 models.
| 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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