行业组件数据 · 2026

轴颈

The journal section of a work roll that rotates within bearings to support rolling forces in metal forming.

技术定义与适配语境
典型 轴颈 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

The neck or journal of a work roll is the cylindrical portion at each end of the roll that fits into bearings within the roll chocks. This critical component transmits torque from the drive system while supporting radial and axial loads during metal rolling operations. It maintains precise alignment and rotational stability under extreme mechanical stresses in hot/cold rolling mills.

组件规格

定义
The neck or journal of a work roll is the cylindrical portion at each end of the roll that fits into bearings within the roll chocks. This critical component transmits torque from the drive system while supporting radial and axial loads during metal rolling operations. It maintains precise alignment and rotational stability under extreme mechanical stresses in hot/cold rolling mills.
工作原理
The journal converts rotational drive torque into rolling force through bearing interfaces while maintaining geometric precision under load. It operates as a mechanical power transmission element that must withstand cyclic bending moments, torsional stresses, and thermal expansion differentials between the roll body and bearing assemblies.
材料
Forged alloy steel (typically AISI 4340DIN 34CrNiMo6) with surface hardening to 55-62 HRC. Chrome-molybdenum-nickel alloys provide fatigue resistance with core toughness. Precision grinding achieves surface finish Ra ≤ 0.4 μm.
Core hardness
28-32 HRC
Surface finish
Ra 0.2-0.4 μm
Surface hardness
58-62 HRC
Diameter tolerance
h6/h7
Roundness tolerance
≤ 0.01 mm
Straightness tolerance
≤ 0.02 mm/m
标准
ISO 286-2DIN 7150ASTM A29

行业分类与别名

轴颈 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Inadequate lubrication flow->Journal overheating and bearing seizure->Install flow sensors with automatic shutdown triggers
Bearing misalignment during installation->Accelerated wear and vibration->Implement laser alignment procedures with 0.05mm tolerance
Thermal expansion mismatch->Crack initiation in journal fillet radius->Design with controlled cooling channels and thermal barriers

工业生态与工程逻辑

0
Bearing seizure due to lubrication failure
1
Fatigue cracking from cyclic loading
2
Geometric distortion under thermal stress
3
Corrosion in humid mill environments

合规与检测

tolerance
Geometric tolerances per ISO 2768-mK, dimensional per ISO 286-2
test method
Dimensional: CMM measurement; Hardness: Rockwell C scale; Surface: profilometer; NDT: magnetic particle inspection per ASTM E709

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来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What causes journal scoring in work rolls?

Journal scoring typically results from lubricant failure, bearing misalignment, or contamination ingress. Preventive measures include proper lubrication systems, bearing clearance monitoring, and seal maintenance.

How often should roll journals be inspected?

Visual inspections should occur during roll changes (weekly-monthly), with dimensional checks every 3-6 months. Non-destructive testing (magnetic particle/ultrasonic) is recommended annually or after 10,000 operating hours.

Can damaged journals be repaired?

Minor scoring can be polished out if within tolerance limits. Severe damage requires metal deposition (welding/thermal spray) followed by precision regrinding, though replacement is often more economical for critical applications.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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初步技术归类
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