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Overview
Technical Specs
Wear Parts
McLanahan

DDC-Sizers

McLanahan DDC-Sizers are twin-shaft direct-drive crushers designed for primary and secondary crushing of coal, salt and soft minerals. The compact design with toothed rolls processes material with precise sizing and minimal fines. DDC-Sizers feature bolt-on tooth segments for rapid maintenance. Anranst provides tooth segments and roll shells in ZG30CrMnMo and ZG30CrNiMo alloy steel.

Typical Applications

Miningquarryingaggregatescementrecycling.
DDC-Sizers
Technical Data

DDC-Sizers — Models

ModelsWear Parts
ModelsVarious
Wear PartsTooth segments, Shafts

Wear Parts

Manufactured from premium wear-resistant alloys including high-manganese steel, Cr-Mo alloy steel, and high-chrome cast iron.

Wear Parts

DDC-Sizers Wear Parts

Models

Various

Wear Parts

Tooth segments, Shafts

Tooth Segment / Pick Assembly

Replaceable tooth segments for DDC-Sizer; direct drive crushing with minimal fines generation for coal/salt applications

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

DDC-Sizer roll shells with integrated tooth pattern; replaceable without removing shaft

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

ZG30CrNiMoGB ZG30CrNiMo / Ni-Mo alloy cast steel
HardnessHRC 48-58
ToughnessAKV ≥ 40J
Tensile Strength≥ 950 MPa
Yield Strength≥ 700 MPa
GradeCSiMnCrNiMo
ZG30CrNiMo0.25-0.350.3-0.60.7-1.10.8-1.21.0-1.50.15-0.30

Superior toughness with Ni addition; ideal for heavy-duty sizer teeth requiring both wear resistance and impact strength

Why Choose Anranst

  • ZG30CrMnMo tooth segments for DDC-Sizer 500-1000; proven in coal preparation plants worldwide
  • ZG30CrNiMo for DDC-Sizer 1000+ with heavier tooth loading; Ni-enhanced toughness prevents premature tooth failure
  • Full DDC-Sizer coverage: DDC-Sizer 500, 625, 800, 1000 and custom sizes
DDC-Sizers
Equipment

McLanahan Equipment

Triple/Double Roll Crushers

Various

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