行业组件数据 · 2026

回转支承

繁體:迴轉支承

回转支承是一种专用滚动轴承,用于在机械中实现静止与运动部件之间的受控旋转。

技术定义与适配语境
典型 回转支承 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。

回转支承是一种专用滚动轴承,设计用于在机械中实现静止与运动部件之间的受控旋转。它由内圈和外圈组成,带有精密加工的滚道、滚动体(球或滚子)以及保持架或隔圈。该部件可减少摩擦,承受组合载荷(径向、轴向和倾覆力矩),保持对中,并确保工业应用中的精确旋转精度。 其工作原理基于滚动接触,滚动体(球或滚子)在内、外滚道之间旋转,将滑动摩擦转化为较低的滚动摩擦。这减少了能量损失、发热和磨损,同时将载荷均匀分布在接触表面上。润滑(脂或油)进一步减少摩擦,防止金属与金属直接接触。

组件规格

定义
回转支承是一种专用滚动轴承,设计用于在机械中实现静止与运动部件之间的受控旋转。它由内圈和外圈组成,带有精密加工的滚道、滚动体(球或滚子)以及保持架或隔圈。该部件可减少摩擦,承受组合载荷(径向、轴向和倾覆力矩),保持对中,并确保工业应用中的精确旋转精度。

其工作原理基于滚动接触,滚动体(球或滚子)在内、外滚道之间旋转,将滑动摩擦转化为较低的滚动摩擦。这减少了能量损失、发热和磨损,同时将载荷均匀分布在接触表面上。润滑(脂或油)进一步减少摩擦,防止金属与金属直接接触。
工作原理
Operates on the principle of rolling contact, where rolling elements (balls or rollers) rotate between inner and outer raceways, converting sliding friction into lower rolling friction. This reduces energy loss, heat generation, and wear while distributing loads evenly across contact surfaces. Lubrication (grease or oil) further minimizes friction and prevents metal-to-metal contact.
材料
通常由高碳铬钢(AISI 52100/SUJ2)或不锈钢(AISI 440C)制成以提供耐腐蚀性。对于高速或极端环境存在陶瓷(氮化硅)或混合型(钢圈配陶瓷球)变体。保持架通常采用钢、黄铜或聚合物(PEEK、尼龙)制成。
Sealing
Contact (rubber) or non-contact (labyrinth) seals
Clearance
C0-C5 (radial internal clearance)
Speed Rating
Up to 20,000 rpm (depending on type and lubrication)
Load Capacity
Dynamic: 15-200 kN, Static: 10-150 kN
Precision Class
ABEC 1-9 or ISO P0-P2
Operating Temperature
-30°C to +120°C (standard), up to +200°C (special)
标准
ISO 15ISO 76ISO 281DIN 625DIN 628

行业分类与别名

回转支承 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

Insufficient or contaminated lubrication->Increased friction, overheating, and eventual bearing seizure->Implement scheduled lubrication maintenance with clean, appropriate lubricants; use sealed bearing designs in dirty environments
Misalignment during installation->Uneven load distribution, accelerated wear, and reduced bearing life->Use precision alignment tools during installation; follow manufacturer torque specifications; verify runout after installation
Excessive axial or radial loads beyond rated capacity->Brinelling, raceway spalling, or catastrophic fracture->Calculate operational loads accurately; select bearings with appropriate safety factors; install overload protection devices

工业生态与工程逻辑

0
Overloading leading to premature fatigue failure
1
Contamination from dust/debris causing abrasive wear
2
Improper installation causing misalignment and uneven load distribution
3
Inadequate lubrication resulting in overheating and seizure
4
Corrosion in humid or chemical environments

合规与检测

tolerance
ISO 492 (Normal class) or ABEC 1-9 for precision; radial runout tolerance typically 0.005-0.02 mm
test method
ISO 15242 (vibration testing), ISO 76 (static load rating verification), ISO 281 (dynamic load rating and life calculation)

制造该组件的工厂

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 is the difference between a rotary bearing and a standard ball bearing?

Rotary bearings are designed to handle combined loads (axial, radial, and moment) simultaneously, often with larger dimensions and higher load capacities, while standard ball bearings typically handle primarily radial loads and are smaller in size.

How often should rotary bearings be lubricated?

Lubrication intervals depend on operating conditions: typically every 6-12 months for standard applications, or continuously lubricated in high-speed/heavy-load environments. Follow manufacturer specifications based on speed, load, and temperature.

Can rotary bearings be used in vertical orientations?

Yes, but orientation affects load distribution and lubrication. Special designs with enhanced sealing and lubrication systems are recommended for vertical applications to prevent lubricant leakage and ensure even load support.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
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请求制造能力信息: 回转支承

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