4 Proven Crane Sheave Types for Distinct Performance Needs

soxta kran shkivlari
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
Quyma kranli shpal
  • 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
O'ralgan kran qisqichlari
  • Hot Rolling: Enhances sheaves bending, shear strength, and structural stability.
  • Precision Groove Grinding: Accurate groove radius for smoother wire rope contact.
nylon crane sheaves
Neylon kran qisqichlari
  • 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
Yuqori kranlar uchun quyma kran qoziqlari
Xususiyatlari
  • 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
Xususiyatlari
  • 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
Xususiyatlari
  • 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
Yevropa ko'prikli kranlari uchun neylon kran qisqichlari
Xususiyatlari
  • 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
Port portali kranlari uchun o'ralgan kran g'altaklari
Xususiyatlari
  • 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
Xususiyatlari
  • 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 kesish va bo'shatish
  • Germaniyaning Mesell CNC kesish mashinasi Ra ≤12,5 μm bilan aniq kesishlarni ta'minlaydi.
  • Xom ashyo yetarli darajada mustahkamlikni ta'minlash uchun asosiy spektral va mexanik tekshiruvlardan o'tkaziladi.
sheaves step2
2Nazorat ostidagi materiallarni isitish
  • Isitish pechi plastisitni oshiradi va shakllantirish qarshiligini pasaytiradi.
  • To'g'ri harorat oralig'i qayta kristallanishni va donning bir xil tuzilishini ta'minlaydi.
sheaves step3
3Soxtalashtirish
  • 8000 tonnalik zarb qilish halqasi pressi minimal qolip bilan mahalliy bosimni qo'llaydi.
  • Qisqa 2-4 daqiqalik tsikl bilan an'anaviy zarb qilish kuchining atigi 1/5–1/10 qismini talab qiladi.
sheaves step4
4Issiqlik bilan ishlov berish
  • Induksion söndürme mashinasi arqon oluklarida maqsadli qattiqlashishni amalga oshiradi.
  • Avtomatlashtirilgan boshqaruv ±0,05 mm aniqlik bilan barqaror qattiqlik chuqurligini ta'minlaydi.
sheaves step5
5Nozik ishlov berish
  • CNC kasnakli torna stanogi bitta o'rnatishda tokarlik va burg'ulashni yakunlaydi.
  • Sirt qoplamasi Ra ≤1.6 μm bilan ≤0.01 mm joylashishni takrorlang.
sheaves step6
6Final Inspection & Packing
  • Chiqarishdan oldin o'lchovli tekshiruvlar, yiv tekshiruvi va aylanish sinovlari.
  • Xavfsiz tashish va yetkazib berish uchun korroziyaga qarshi himoya va mustahkamlangan qadoqlash.

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