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Overview
Technical Specs
Wear Parts
FLSmidth

DRC Double Roll Crushers

FLSmidth DRC (Double Roll Crusher) is designed for primary and secondary crushing of soft to medium-hard materials. The compact design with direct drive system provides efficient size reduction at low operational costs. DRC models feature hydraulic gap adjustment and automatic tramp iron protection. Anranst supplies roll shells and segments in Mn18Cr2 and ZG30CrMnMo alloy steel.

Typical Applications

are low-speed sizers and double-roll crushers. Two types of conveyor systems being selected for these systems are the conventional conveyor and high-angle conveyor. The high-angle conveyor system has yet to be put in operation in a high-tonnage mining operation. IPCC DEVELOPMENT In 1956the fir
DRC Double Roll Crushers
Technical Data

DRC Double Roll Crushers — Models

ModelsWear Parts
ModelsDRC 18-18, 20-20
Wear PartsRoll segments, Teeth
Modelsof events have taken place since 2006 which is again changing IPCC
Modelshowever

Compatible Models (from OEM catalog)

HRB MF 306HRB MF 308HRB MF 310HRB MF 312HRB MF 314HRB MF 316HRB MF 412HRB MF 414HRB MF 416HRB MF 418HRB MF 518HRB MF 618

Wear Parts

yield at about 0.1% of the theoretic strength. The reason metals have such low strengths is because of imperfect atomic structures in the crystal lattices which make them up. Often a row of atoms will stop mid crystal and a gap is created in the atomic structure. These gaps act as huge stress rais

Wear Parts

DRC Double Roll Crushers Wear Parts

Models

DRC 18-18, 20-20

Wear Parts

Roll segments, Teeth

Tooth Segment / Pick Assembly

Individual tooth segments bolted to roll shaft; crush material by combined shear and impact; replaceable without removing entire roll

ZG30CrMnMoGB ZG30CrMnMo / Low-alloy Cr-Mo wear steel
HardnessHRC 45-55
ToughnessAKV 10-15J
Tensile Strength≥ 850 MPa
Yield Strength≥ 650 MPa
GradeCSiMnCrMoNi
ZG30CrMnMo0.26-0.340.40-0.800.90-1.300.90-1.300.15-0.25—

Excellent balance of hardness and toughness; optimized for sizer tooth picks under combined impact + shear loading

ZG30CrNiMoGB ZG30CrNiMo / Ni-enhanced Cr-Mo alloy cast steel
HardnessHRC 45-55
ToughnessAKV 20-25J
Tensile Strength≥ 900 MPa
Yield Strength≥ 700 MPa
GradeCSiMnCrMoNi
ZG30CrNiMo0.26-0.340.40-0.800.60-1.000.90-1.300.15-0.250.90-1.30

Ni substitution for Mn increases toughness by 67% vs ZG30CrMnMo (AKV 20-25J vs 10-15J); essential for heavy tooth picks (>25kg) with higher bending moment

Mn13Cr2ASTM A128 Grade B-2 / GB ZGMn13-2
HardnessHB 210-260 (work-hardens to HRC 45-55)
ToughnessAKV ≥ 80J
Tensile Strength≥ 750 MPa
Yield Strength≥ 380 MPa
GradeCSiMnCrMoNi
Mn13Cr21.05-1.20≤1.011.5-14.01.5-2.5——

Excellent work-hardening capability; surface hardness increases under impact, ideal for moderate to high impact crushing conditions

Roll Shell / Tire

DRC roll crusher shell; replaceable wear surface on roll body

Mn18Cr2ASTM A128 Grade B-4 / GB ZGMn18Cr2
HardnessHB 230-300 (work-hardens to HRC 48-58)
ToughnessAKV ≥ 60J
Tensile Strength≥ 800 MPa
Yield Strength≥ 420 MPa
GradeCSiMnCr
Mn18Cr21.05-1.35≤1.016.0-19.01.5-2.5

Superior work-hardening depth; 20-30% longer life than Mn13 in high-compression applications

ZG30CrMnMoGB ZG30CrMnMo / Low-alloy cast steel
HardnessHRC 45-55
ToughnessAKV ≥ 35J
Tensile Strength≥ 900 MPa
Yield Strength≥ 650 MPa
GradeCSiMnCrMo
ZG30CrMnMo0.25-0.350.3-0.60.8-1.20.8-1.20.15-0.30

High strength and wear resistance for sizer tooth applications; verified composition with full QC documentation

Why Choose Anranst

  • ZG30CrNiMo heavy-duty tooth picks for DRC 600-1200 sizers; 67% higher toughness (AKV 20-25J) prevents tooth breakage in frozen coal applications
  • Interchangeable tooth design enables selective replacement; reduces parts cost by 40-50%
  • Full DRC-series coverage: DRC 600, DRC 800, DRC 1000, DRC 1200

Maintenance Recommendations

personnel, equipment manufacturers, and especially the mine planners. The types of in-pit crushers usually reviewed by mine planners for hard ore are fixed plants mounted at the rim of the pit and semimobile and fully mobile plants within the pit. The gyratory crusher is the crusher of choice for capacities over 2,500 t/h (metric tons per hour) [2,755 stph, or short tons per hour]). For soft

DRC Double Roll Crushers
Equipment

FLSmidth Equipment

Raptor Cone Crushers

XL300-XL1100

SAG/AG Mills

Various

HPGR Roller Presses

Various

WEMCO Flotation

SmartCell 300m³

KREBS Slurry Pumps

millMAX, slurryMAX

TSUV Gyratory Crushers

42-65 to 60-110

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