Max 50T mill ring girth gear cement kiln cast steel girth gear and spur gear
Rotary kiln spur girth gear used as the actual mechanical part in an engine, which need to drive for the long time rotation, so the quality of the gear will be required very high in the actual manufacture.
Our company can produce different type gear ring accroding to the customer's drawing and requirments.

| girth gear and and spur gear |
| Carbon steel,Alloy steel,42CrMo,35CrMo,34CrNiMo6 |
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| Spur gear,double helical gear,helical gear,horringbone Gear |
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| Forging, rough machining, QT, finish machining |
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| Raw material inspection, UT,physical property test,dimension inspect |
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Product Advantages
- Heavy load capacity,long lifespan.
- High precision,large diameter and module
- Support welding
item | description |
normal materials | 45 steel, 35simn |
better materials | 35crmo, 42crmo |
42CRMO STEEL DATA
化学成份 CHEMICAL LIST
编辑
碳 C :0.38~0.45%
硅 Si:0.17~0.37%
锰 Mn:0.50~0.80%
硫 S :允许残余含量≤0.035%
磷 P :允许残余含量≤0.035%
铬 Cr:0.90~1.20%
镍 Ni:允许残余含量≤0.030%
铜 Cu:允许残余含量≤0.030%
钼 Mo:0.15~0.25% [1]
力学性能 MECHANICAL DATA
编辑
抗拉强度 σb (MPa):≥1080(110)
屈服强度 σs (MPa):≥930(95)
伸长率 δ5 (%):≥12
断面收缩率 ψ (%):≥45
冲击功 Akv (J):≥63
冲击韧性值 αkv (J/cm2):≥78(8)
硬度 :≤217HB [1]
试样尺寸:试样毛坯尺寸为 25mm
物理性能 PHYSICAL DATA
编辑
1)临界点温度(近似值) Critical point temperature (approximate value)
:Ac1=730°C,Ac3=800°C,Ms=310°C.
2)线胀系数:温度 Linear expansion coefficient: temperature
20~100°C/20~200°C/20~300°C /20 ~400°C/20~500°C /20~600°C,线胀系数
linear expansivity: 11.1×10K/12.1×10K/12.9×10K/13.5×10K/13.9×10K14.1×10K.
3)弹性模量:温度 Modulus of elasticity: temperature 20°C/300°C/400°C/500°C/600°C,
弹性摸 Elastic modulus 210000MPa/185000MPa/ 175000MPa/165000MPa/15500oMPa
girth gear for ball mill and rotary kiln pictures
item | remark |
normal materials | 45 steel, 35simn steel |
better materials | 35cromo, 42crmo |


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