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Overview
Technical Specs
Wear Parts
Loesche

Coal VRM

Loesche vertical roller mills are the global standard for coal grinding in power plants and cement kilns. The modular 2+2 or 3+3 roller configuration provides efficient grinding with low specific energy consumption. The integrated LSKS classifier achieves precise fineness control for different coal types. Anranst supplies grinding rollers, table liners and classifier vanes in Cr26 high-chrome iron with ceramic composite options.

Typical Applications

Miningquarryingaggregatescementrecycling.
Coal VRM
Technical Data

Coal VRM — Models

ModelsWear Parts
ModelsLM 12.2 to LM 43.4
Wear PartsRoller sleeves, Grinding tables, Nozzle rings

Wear Parts

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

Wear Parts

Coal VRM Wear Parts

Models

LM 12.2 to LM 43.4

Wear Parts

Roller sleeves, Grinding tables, Nozzle rings

Roller Sleeve / Grinding Roller Tire

Grinding roller surface for Loesche LM coal mills; 2+2 or 3+3 roller configuration; hardfacing or Cr26 cast options

Hardfacing Overlay (Cr-C)Cored wire overlay / WC + Cr-C composite
HardnessHRC 60-68 (overlay layer)
ToughnessAKV ≥ 30J (base metal)
Tensile Strength≥ 600 MPa (base)
Yield Strength≥ 350 MPa (base)
GradeCCrNbWFe
Hardfacing Overlay (Cr-C)3.0-5.520.0-35.04.0-8.00-10.0Balance

Weld overlay on cast steel base; can be re-welded 3-5 times for extended service life; cost-effective for VRM rollers and HPGR cheek plates

Cr26ASTM A532 Class III Type A / GB KmTBCr26
HardnessHRC 58-65
ToughnessAKV 5-8J
Tensile Strength≥ 500 MPa
Yield Strength—
GradeCSiMnCrMoNi
Cr262.0-3.3≤1.00.5-1.523.0-30.01.0-3.0≤1.5

Excellent abrasion resistance with M7C3 carbide network; 3-5x longer life than Mn steel in pure abrasive wear; ideal for vertical mill rollers and VSI rotors

Classifier Vane

Loesche coal mill rotating classifier vanes; adjustable for precise fineness control

Cr20ASTM A532 Class III Type A / GB KmTBCr20Mo
HardnessHRC 58-63
ToughnessAKV ≥ 10J
Tensile Strength≥ 600 MPa
Yield Strength—
GradeCSiMnCrMo
Cr202.0-3.3≤1.2≤1.518.0-23.0≤3.0

High hardness with moderate toughness; excellent for impact-crusher blow bars and hammer tips

Cr26ASTM A532 Class III Type A / GB KmTBCr26
HardnessHRC 60-65
ToughnessAKV ≥ 8J
Tensile Strength≥ 550 MPa
Yield Strength—
GradeCSiMnCrMo
Cr262.0-3.3≤1.2≤1.523.0-30.0≤2.0

Highest hardness for abrasive wear; best for fine crushing and grinding applications with low impact

Why Choose Anranst

  • Hardfacing roller sleeves for LM 21.2-LM 53.3+4; can be re-welded 3-5 times for extended operational life; 40% lower cost-per-tonne vs solid Cr26
  • Cr26 solid cast option for maximum abrasion resistance in high-ash coal applications
  • Full Loesche coal mill coverage: LM 21.2, LM 23.2, LM 25.3+4, LM 28.3+4, LM 35.3+4, LM 43.3+4, LM 53.3+4
Coal VRM
Equipment

Loesche Equipment

Cement VRM

LM 27.3 to LM 69.6

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