行业组件数据 · 2026

曲轴

A crankshaft is a mechanical component that converts reciprocating linear piston motion into rotational motion in precision mechanical stamping presses.

技术定义与适配语境
典型 曲轴 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 crankshaft is a critical rotating shaft in precision mechanical stamping presses that transforms the reciprocating motion of connecting rods (driven by pistons or eccentric mechanisms) into smooth, continuous rotational motion. It features precisely machined crankpins and main journals that operate within high-precision bearings, maintaining strict alignment and balance to ensure consistent stamping force delivery with minimal vibration.

组件规格

定义
The crankshaft is a critical rotating shaft in precision mechanical stamping presses that transforms the reciprocating motion of connecting rods (driven by pistons or eccentric mechanisms) into smooth, continuous rotational motion. It features precisely machined crankpins and main journals that operate within high-precision bearings, maintaining strict alignment and balance to ensure consistent stamping force delivery with minimal vibration.
工作原理
The crankshaft operates on the principle of converting linear reciprocating motion into rotational torque through offset crankpins. As the press's drive mechanism (often via a flywheel and clutch) rotates the crankshaft, the eccentric crankpins cause the connecting rods to move in a controlled reciprocating pattern, which drives the press ram up and down with precise timing and force application for metal stamping operations.
材料
Typically forged alloy steel (e.g.AISI 41404340or EN19) with surface hardening treatments like induction hardening or nitriding on bearing surfaces. High-precision applications may use vacuum-remelted steels for enhanced fatigue resistance.
Maximum RPM
100-600 RPM
Stroke Length
50-400 mm
Balancing Grade
G2.5 or better per ISO 1940
Surface Hardness
55-62 HRC on journals
Crankpin Diameter
70-180 mm
Torsional Stiffness
Minimum 10^6 Nm/rad
Main Journal Diameter
80-200 mm
标准
ISO 1940-1DIN 3760ISO 286-2DIN 7190

行业分类与别名

曲轴 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 lubrication->Bearing seizure and crankshaft scoring->Implement automated lubrication monitoring with pressure/temperature sensors and scheduled oil analysis
Improper balancing->Excessive vibration leading to bearing damage and press frame fatigue->Dynamic balancing to ISO 1940 standards during manufacturing and after any repairs

工业生态与工程逻辑

0
Fatigue failure from cyclic loading
1
Bearing seizure due to lubrication failure
2
Torsional vibration resonance
3
Misalignment causing premature wear

合规与检测

tolerance
Journal diameters: IT6-IT7, Eccentricity: ±0.02 mm, Surface finish: Ra 0.4-0.8 μm
test method
Ultrasonic testing for internal defects, magnetic particle inspection for surface cracks, coordinate measuring machine (CMM) verification of geometries

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 maintenance is required for stamping press crankshafts?

Regular lubrication system checks, vibration monitoring, bearing clearance inspections every 6-12 months, and torsional vibration analysis during preventive maintenance.

How does crankshaft design affect stamping precision?

Precision-ground journals and proper balancing reduce vibration, ensuring consistent ram motion and part quality. Eccentricity tolerance directly impacts stroke consistency.

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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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URN:CNFX:ME:UNIT:CRANKSHAFT