行业组件数据 · 2026

导轨主体

Rail Body is the stationary structural component of a linear guide rail system that provides precision guidance for moving carriages.

技术定义与适配语境
典型 导轨主体 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 Rail Body is the foundational structural element in a linear guide rail assembly, typically a hardened and ground steel bar with precisely machined raceways. It serves as the stationary reference surface along which recirculating ball or roller carriages travel, enabling smooth, low-friction linear motion with high accuracy, rigidity, and load capacity. Its geometric precision directly determines system performance in terms of straightness, parallelism, and positional repeatability.

组件规格

定义
The Rail Body is the foundational structural element in a linear guide rail assembly, typically a hardened and ground steel bar with precisely machined raceways. It serves as the stationary reference surface along which recirculating ball or roller carriages travel, enabling smooth, low-friction linear motion with high accuracy, rigidity, and load capacity. Its geometric precision directly determines system performance in terms of straightness, parallelism, and positional repeatability.
工作原理
The Rail Body operates on the principle of constrained linear motion through precision-ground raceways. These raceways guide rolling elements (balls or rollers) within the carriage, minimizing friction and converting rotational drive forces into precise linear displacement. The rail's rigidity prevents deflection under load, maintaining alignment and ensuring accurate motion transfer along its entire length.
材料
Typically made from high-carbon chromium bearing steel (e.g.SUJ2AISI 52100) or case-hardened steelhardened to 58-62 HRC. Stainless steel (e.g.SUS440C) versions are available for corrosive environments. Surface treatments may include black oxide coating or chrome plating for corrosion resistance.
Width
15-100mm
Height
15-60mm
Length
Standard: 500-4000mm, Custom: up to 6000mm
Precision Grade
Normal (N), High (H), Precision (P), Ultra-Precision (UP)
Raceway Hardness
58-62 HRC
Surface Roughness
Ra 0.4μm max
Parallelism Tolerance
≤5μm
Straightness Tolerance
≤3μm/100mm
标准
ISO 14728-1DIN 645JIS B 1192

行业分类与别名

导轨主体 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

Improper mounting surface flatness->Reduced accuracy, premature wear, increased friction->Verify surface flatness (<0.01mm/100mm), use alignment tools, apply proper mounting torque sequence
Inadequate lubrication->Increased friction, overheating, scoring of raceways->Follow manufacturer's lubrication schedule, use compatible greases, implement automatic lubrication systems
Contaminant ingress->Abrasive wear, pitting, reduced lifespan->Install protective covers or bellows, maintain clean environment, use sealed carriage designs

工业生态与工程逻辑

0
Misalignment during installation
1
Corrosion in humid environments
2
Fatigue failure under cyclic loads
3
Contamination of raceways
4
Thermal expansion mismatch with base material

合规与检测

tolerance
Straightness: ≤0.003mm/100mm (P grade), Parallelism: ≤0.005mm, Height variation: ≤0.005mm
test method
Coordinate measuring machine (CMM) verification, laser interferometry for straightness, surface profilometry for roughness, Rockwell hardness testing

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 rail body precision grades?

Precision grades (N, H, P, UP) indicate manufacturing tolerances for straightness, parallelism, and surface finish. Higher grades (P, UP) offer better accuracy for精密 applications like semiconductor manufacturing or metrology equipment.

Can rail bodies be customized for specific applications?

Yes, manufacturers offer custom lengths, hole patterns, special materials (stainless steel), and coatings. Some provide pre-drilled mounting holes or integrated sensor tracks for position feedback systems.

How do you properly install a rail body?

Installation requires a flat, rigid mounting surface with proper alignment using precision levels or laser alignment tools. Bolts should be tightened in a cross pattern to specified torque values to prevent distortion. Parallel installation of multiple rails requires careful measurement to maintain consistent spacing.

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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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URN:CNFX:ME:UNIT:RAIL_BODY