4 Proven Crane Sheave Types for Distinct Performance Needs

forged crane sheaves
Forged Crane Sheaves
  • Material: Precision steel 42CrMo, providing stable strength and good durability.
  • Forging Process: Improves metal structure and grain flow for high mechanical strength.
  • Cost Level: Higher cost due to complex forging steps.
  • Machinability: Easy to machine, causing low wire rope wear.
  • Typical Use: For conventional CD and MD electric hoist hooks.
cast crane sheaves
Cast Crane Sheaves
  • Cost Efficiency: One-step casting enables complex shapes and a lower cost.
  • Service Life: Graphite lubrication plus quench, temper, and shot blasting reduce wear.
rolled crane sheaves
Rolled Crane Sheaves
  • Hot Rolling: Enhances sheaves bending, shear strength, and structural stability.
  • Precision Groove Grinding: Accurate groove radius for smoother wire rope contact.
nylon crane sheaves
Nylon Crane Sheaves
  • Spark-Free Safety: Machining produces no sparks, enhancing safety in flammable or explosive environments.
  • Typical Use: Commonly used in european type electric hoists hooks.

Proven Crane Sheaves for Multiple Applications

case 1
Cast Crane Sheaves for Overhead Cranes
Caratteristiche
  • Material: Cast QT400-18 steel.
  • Groove Surface: Grade 1 finish, RA 6.5.
  • Wheel-to-Rope Ratio: Diameter >20× wire rope diameter to prolong rope life.
  • Groove Profile: Complies with GB/ZBJ8006.1-87; ensures wire rope longevity.
case 2
Rolled Crane Sheaves for RMG Gantry Cranes
Caratteristiche
  • Groove Treatment: Medium-frequency hardened, HRC 40–50+.
  • Mounting Base: Split-type design with standard specifications for easy spare part interchange.
  • Rope Alignment: Entry/exit deviation ≤2.5°.
  • Wheel Diameter: Minimum 25× wire rope diameter.
case 3
Forged Crane Sheaves for Foundry Overhead Cranes
Caratteristiche
  • Material: Steel AISI-4140
  • Surface Hardness: Up to HRC 65 for enhanced wear resistance.
  • Rim Hardening Options: Rim Toughened (≤ RC 40); Deep Hardened (≤ RC 65*).
  • Compliance Standards: Complies with CMAA and the AIST #6 Crane Specifications.
case 4
Nylon Crane Sheaves for European Overhead Cranes
Caratteristiche
  • Ultra-Lightweight: Cast nylon sheaves weigh only 1/7–1/8 of steel.
  • Enhanced Rope Support: Elastic groove deformation under load increases rope–groove contact area, improving load distribution.
  • Corrosion Resistant: No rust or seawater corrosion; no coatings required.
case 5
Rolled Crane Sheaves for Harbour Portal Cranes
Caratteristiche
  • Material: Hot-rolled Q345B steel.
  • Groove Heat Treatment: Rope grooves hardened to RC40–45, hardening depth >2mm, precision machined.
  • Groove Depth: Minimum 1.5× wire rope diameter, smooth surface.
  • Rope Alignment: Rope entry/exit angle deviation ≤2.5° from wheel axis vertical plane.
case 6
Rolled Crane Sheaves for Mechanical Four Rope Grabs Bucket
Caratteristiche
  • Material Density: Sludge bulk density 0.8–0.9 t/m³ (1–3 spans); Formed fuel bulk density 1.1–1.3 t/m³ (4 spans).
  • Grab Volume: 2.5 m³ (sludge).
  • Wire Rope Diameter: 17.5 mm.

6 Key Stages in Precision Forged Crane Sheave Production

sheaves step1
1CNC Cutting & Blanking
  • German Mesell CNC cutting machine delivers precise cuts with Ra ≤12.5 μm.
  • Raw materials undergo basic spectral and mechanical checks to ensure adequate strength.
sheaves step2
2Controlled Material Heating
  • Heating furnace raises plasticity and lowers forming resistance.
  • Proper temperature range promotes recrystallization and uniform grain structure.
sheaves step3
3Forging Forming
  • 8000-ton forging ring press applies localized pressure with minimal die contact.
  • Requires only 1/5–1/10 of conventional forging force with a short 2–4 min cycle.
sheaves step4
4Heat Treatment
  • Induction quenching machine performs targeted hardening on rope grooves.
  • Automated control ensures stable hardness depth with ±0.05 mm accuracy.
sheaves step5
5Lavorazione meccanica di precisione
  • CNC pulley lathe completes turning and drilling in one setup.
  • Repeat positioning ≤0.01 mm with surface finish Ra ≤1.6 μm.
sheaves step6
6Final Inspection&Packing
  • Dimensional checks, groove inspection, and rotation testing before release.
  • Anti-corrosion protection and reinforced packing for safe transport and delivery.

DAFANG CRANE: Your Trusted Partner for Cranes and Industrial Solution

Forza di fabbrica
Forza della fabbrica
  • Fondata nel 2006, Capitale: 84,65 milioni di USD
  • Oltre 80.000 gru fornite in tutto il mondo
  • Esportato in oltre 100 paesi, oltre 130 centri post-vendita
Produzione intelligente
Produzione intelligente
  • Base intelligente di 1.053.000 m²
  • Linee automatizzate per consegne affidabili
  • Gru e strutture in acciaio autosviluppate a gamma completa
Qualità
Qualità e certificazione
  • 11 fasi di ispezione, oltre 200 elementi di prova
  • Servizio all-in-one: progettazione, produzione, logistica, installazione e post-vendita
video

DAFANG CRANE Holds Complete Certifications for Global Compliance

gantry_crane_CE
CE Certificate for Gantry Crane
 gantry_crane_EAC
EAC Certificate for Gantry Crane
 Certificazioni 3
Certificato del sistema di gestione della qualità ISO
 Certificazioni 4
Nuclear Industry Quality Management System Certificate
 Certificazioni 5
Licenza di produzione di attrezzature speciali

Visita del cliente alla fabbrica DAFANG CRANE

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