行业组件数据 · 2026

小齿轮

A pinion gear is a small cylindrical gear that meshes with a larger gear or rack to transmit rotational motion and torque in mechanical systems.

技术定义与适配语境
典型 小齿轮 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。

A pinion gear is a precision-engineered mechanical component designed to engage with a larger gear (typically called a gear or ring gear) or a linear rack to convert rotational motion into linear motion or to transfer torque between shafts. As the driving element in many gear systems, it operates at higher rotational speeds than the mating gear, providing mechanical advantage through gear ratio optimization. Pinion gears are critical in applications requiring speed reduction, torque multiplication, or directional change in power transmission systems.

组件规格

定义
A pinion gear is a precision-engineered mechanical component designed to engage with a larger gear (typically called a gear or ring gear) or a linear rack to convert rotational motion into linear motion or to transfer torque between shafts. As the driving element in many gear systems, it operates at higher rotational speeds than the mating gear, providing mechanical advantage through gear ratio optimization. Pinion gears are critical in applications requiring speed reduction, torque multiplication, or directional change in power transmission systems.
工作原理
The pinion gear operates on the fundamental principle of gear meshing, where its teeth engage with the teeth of a mating gear or rack. As the pinion rotates, it transfers rotational motion and torque through direct tooth contact, following the laws of kinematics and dynamics. The gear ratio (ratio of teeth between mating gears) determines speed and torque conversion. In rack-and-pinion systems, the pinion's rotation converts to linear motion of the rack. Proper meshing requires precise tooth geometry, alignment, and lubrication to minimize friction and wear while maximizing power transmission efficiency.
材料
Typically manufactured from alloy steels (AISI 41404340)carbon steels (10451144)stainless steels (303304)or case-hardened steels. High-performance applications may use bronzebrassor engineered polymers. Surface treatments include carburizingnitridinginduction hardeningor coating with wear-resistant materials.
Module
1-10 mm
Backlash
0.05-0.20 mm
Hardness
HRC 45-60 (surface)
Face Width
10-100 mm
Quality Grade
ISO 1328 Class 5-9
Pitch Diameter
10-400 mm
Pressure Angle
20° or 14.5°
Number of Teeth
6-40 teeth
标准
ISO 1328DIN 3960AGMA 2000JIS B 1702

行业分类与别名

小齿轮 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 or contaminated lubricant->Accelerated wear, scoring, and overheating->Implement scheduled lubrication maintenance, use filtration systems, and monitor oil quality regularly
Misalignment during installation or operation->Uneven tooth loading, premature fatigue, and noise generation->Use precision alignment tools during installation, implement regular alignment checks, and use flexible couplings where appropriate
Overload beyond design capacity->Tooth bending fatigue or sudden fracture->Install torque limiters, conduct regular load monitoring, and ensure proper gear selection for application requirements

工业生态与工程逻辑

0
Tooth breakage due to overload
1
Premature wear from improper lubrication
2
Misalignment causing uneven load distribution
3
Noise and vibration from poor meshing
4
Corrosion in harsh environments

合规与检测

tolerance
Tooth profile tolerance per ISO 1328 Class 7, runout tolerance within 0.02 mm, backlash tolerance ±0.05 mm
test method
Coordinate measuring machine (CMM) inspection, gear rolling test for noise evaluation, hardness testing per ASTM E18, surface roughness measurement per ISO 4287

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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 pinion gear and a regular gear?

A pinion gear is specifically the smaller gear in a gear pair, typically the driving element, while 'gear' can refer to any toothed wheel. Pinions usually have fewer teeth and rotate faster than their mating gears.

How do I select the right pinion gear for my application?

Consider torque requirements, speed ratios, operating environment, material compatibility, and mounting constraints. Key parameters include module, pressure angle, number of teeth, and material hardness based on load conditions.

What maintenance do pinion gears require?

Regular lubrication with appropriate gear oil, periodic inspection for wear patterns (pitting, scoring), alignment checks, and monitoring of backlash and vibration levels to prevent premature failure.

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URN:CNFX:ME:UNIT:PINION_GEAR