行业组件数据 · 2026

码盘

A precision optical or magnetic disk used in rotary encoders to convert angular position into digital signals for motion control systems.

技术定义与适配语境
典型 码盘 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 code disk is a critical component in rotary encoders that features precisely patterned tracks of alternating transparent/opaque segments (optical) or magnetic poles (magnetic). As the disk rotates with the encoder shaft, these patterns interrupt light beams or alter magnetic fields, generating electrical pulses that are processed to determine precise angular position, speed, and direction of rotation in industrial machinery.

组件规格

定义
A code disk is a critical component in rotary encoders that features precisely patterned tracks of alternating transparent/opaque segments (optical) or magnetic poles (magnetic). As the disk rotates with the encoder shaft, these patterns interrupt light beams or alter magnetic fields, generating electrical pulses that are processed to determine precise angular position, speed, and direction of rotation in industrial machinery.
工作原理
The code disk operates on either optical or magnetic principles. In optical encoders, a light source passes through transparent segments and is blocked by opaque segments, creating light/dark patterns detected by photodetectors. In magnetic encoders, Hall-effect sensors detect changes in magnetic fields from alternating poles. The resulting pulse trains are decoded by electronic circuits to calculate position with resolutions determined by the number of segments per revolution.
材料
Optical disks: Glass (borosilicate) or polymer (polycarbonate) substrates with chromium or photoresist patterning. Magnetic disks: Ferromagnetic alloys (nickel-iron) or rare-earth magnets (neodymium) with precise pole magnetization. Mounting hubs typically use aluminum or stainless steel.
Max RPM
5,000-10,000
Accuracy
±0.1° to ±0.001°
Diameter
20-100 mm
Thickness
1-5 mm
Resolution
100-10,000 pulses per revolution
Output Type
Incremental/Absolute
Protection Rating
IP54-IP67
Operating Temperature
-20°C to +85°C
标准
ISO 16016DIN 40080IEC 60068

行业分类与别名

码盘 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

Dust accumulation on optical patterns->Signal dropout or erroneous readings->Implement sealed encoder housings with IP67 rating and regular maintenance cleaning
Bearing wear in encoder assembly->Eccentric rotation causing inconsistent pulse generation->Use precision bearings with periodic lubrication and vibration monitoring
Temperature extremes beyond specification->Material expansion/contraction altering pattern spacing->Select materials with low thermal expansion coefficients and implement temperature compensation algorithms

工业生态与工程逻辑

0
Contamination affecting optical transmission
1
Mechanical damage from shock/vibration
2
Magnetic interference
3
Thermal expansion causing accuracy drift
4
Installation misalignment

合规与检测

tolerance
Radial runout < 0.02 mm, axial runout < 0.01 mm, segment position accuracy ±0.5 arc-minutes
test method
Laser interferometry for pattern accuracy, coordinate measuring machines for dimensional verification, environmental testing per IEC 60068 standards

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 incremental and absolute code disks?

Incremental disks have uniform patterns that generate pulses for relative position tracking, while absolute disks have unique binary or Gray code patterns that provide exact position information even after power loss.

How do I select the right resolution for my application?

Calculate based on required positional accuracy and maximum speed. Higher resolution provides finer control but may require faster electronics. Typical industrial applications use 500-2,000 PPR.

Can code disks be replaced independently?

Yes, but replacement requires precise alignment and calibration. Use manufacturer-specified disks to maintain encoder accuracy and compatibility.

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CNFX Industrial Component Index · 机械和设备制造

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URN:CNFX:ME:UNIT:CODE_DISK