Overview
The dial surface roughness tester is a mechanical instrument designed to measure the texture of machined surfaces. It features a stylus that traverses the surface, converting minute variations into readable measurements via a dial indicator. This tool is widely used in automotive, aerospace, and precision engineering industries to ensure compliance with surface finish specifications. Unlike digital models, the dial version offers simplicity and reliability, making it a preferred choice in environments where electronic devices may be impractical. Its mechanical nature ensures consistent performance without the need for frequent battery replacements or software updates.
Structure and Working Principle
The tester consists of a base unit, a stylus, and a dial indicator. The stylus moves across the surface, detecting peaks and valleys, while the dial displays the roughness value in micrometers (µm) or microinches (µin). The mechanism relies on a spring-loaded arm to maintain consistent contact pressure. Calibration is achieved using certified reference samples. The device measures parameters like Ra (average roughness) and Rz (maximum height of irregularities). Its analog nature ensures minimal lag, providing real-time feedback during inspections.
Key Features
Portability and durability are standout features, as the tester is often used in workshop settings. The dial indicator provides clear, immediate readings without digital interference. The device is typically resistant to dust and minor impacts, ensuring longevity. Measurement ranges vary by model, with high-end units offering resolutions up to 0.01 µm. Some versions include interchangeable stylus tips for specialized surfaces, such as curved or hardened materials.
Application Areas
Primary applications include quality assurance in machining, grinding, and polishing processes. Industries like automotive manufacturing rely on these testers to validate engine components, bearings, and transmission parts. Aerospace sectors use them for turbine blade inspections. Laboratories and R&D facilities also employ these devices for material studies. The tester’s ability to provide repeatable measurements makes it indispensable for ISO and ANSI compliance audits.
Maintenance and Precautions
Regular calibration is critical to maintain accuracy. Use certified reference blocks to verify performance monthly. Clean the stylus after each use to prevent debris buildup, which can skew results. Avoid dropping the device, as mechanical shock may misalign internal components. Store in a dry, temperature-controlled environment to prevent corrosion. Lubricate moving parts sparingly to ensure smooth operation.
B2B Procurement Guide
When purchasing, prioritize models compliant with ISO 1997 or ASME B46.1 standards. Verify the measurement range aligns with your typical surface finishes (e.g., 0.05–10 µm for fine machining). Reputable brands like Mitutoyo and Taylor Hobson offer reliable options. Consider bundled calibration certificates and after-sales support. For bulk orders, negotiate warranties and discounted service contracts.
Related Manufacturers
- 主营：[]
- 主营：金相磨抛机、金相镶嵌机、金相切割机、表面粗糙度仪、三丰粗糙度仪、粗糙度轮廓仪、圆度仪、涂层测厚仪、硬度计
- 主营：磁导率仪、铁素体测量仪、磁通计
- 主营：风速计、湿膜轮、工业led、分析仪、折射仪、振动仪、测量仪、测温仪、扭矩仪、色差仪、照度仪、测振仪、中高温、lcr电桥、uv-int160、tes-1352h、计数器、样品瓶、rionnc-72、示波器、hch-2000d、手套箱、干燥机、风量罩、紫外灯
- 主营：扫描电镜、三维显微镜、共聚焦显微镜、白光干涉仪、激光干涉仪、膜厚台阶仪、微纳光学设备、双束电镜(FIB)
- 主营：检测仪、测厚仪、壁厚仪、硬度计
- 主营：轮廓仪、粗糙度轮廓仪
- 主营：测试机、卫生巾、维落球、测定仪、耐磨仪、胀破仪、检测仪、测试仪、试验仪、试验箱、压滚轮、纸尿裤、测试箱、csi十字、gb-t6541-86、色灯箱-5、gb-t28004.1、对色灯箱、奶瓶抗压、呼吸气密、滤棒香烟、消防空气、医疗阻湿、吸水倍率、表面抗湿
- 主营：万能试验机、工业内窥镜、管材静液压试验机、差示扫描量热仪、热重分析仪、差热分析仪、同步热分析仪、热变形维卡软化点测定仪、导热系数测定仪、熔体流动速率仪、熔指仪、导热仪、转矩流变仪、激光粒度仪、纳米粒度仪、DSC差示扫描量热仪、TGA热重分析仪、比热容测定仪、综合热分析仪、炭黑含量测试仪、炭黑分散度测试仪、毛细管流变仪、膨胀系数测试仪、体积表面电阻率测试仪、电压击穿试验机
- 主营：万能试验机、土壤密度测试、抗压测试设备、粗粒土试验检测仪器、测试仪、试验仪、土壤检测仪器、混凝土检测仪器、土工布检测仪器、沥青混合料检测仪器、电工套管实验仪器、水泥砂浆检测仪器、粉体粉末试验检测仪器、石油沥青检测仪器、试验机、试验箱、切割机、陶瓷检测设备、压力机、管材检测设备、防水卷材检测设备、无损检测设备、工程测绘设备、安全检测设备
- 主营：关节臂、X-RAY、测针、圆度仪、轮廓仪、三坐标
- 主营：光学仪器、实验室设备
- 主营：测试仪、检测仪器、试验仪、鲁尔圆锥测试仪、拉力机、耐碎石试验机
- 主营：透明板、清洗疏通车、刚度试验机、检测仪器、平整度仪、板式测厚仪、水平渗透仪、憎水性测试仪、冲击试验机、破乳试验机、静载试验机、压力试验机、多功能洒水车、网格布试验箱、纯电动消防车、矿物棉振筛机、内外压试验机、相容性试验箱、集装箱养护室、玻璃棉绝热材料、热荷重试验装置、钢管弯曲试验机、正反弯曲试验机、抗冲击试验装置、保温材料制样器
- 主营：消防机器人、履带运输车、巡检机器人、漏电探测仪、消防箱、消防服、破拆工具组、干粉灭火器、打药喷雾机、传感器、电磁阀、保护器、电动脚手架、装载机电子秤、砌筑升降平台、光伏板升降机、内撑吊具、混凝土振动棒、打标机、裁剪机、研磨机、压铆机、小型装载机、洗消剂、防爆风机
- 主营：矿用设备、铁路设备、救援设备、仪器仪表、防爆电器、路面机械、工程机械、智能制造
- 主营：矿用设备、铁路设备、救援装备、分体式粗糙度仪、防爆电器、路面机械、工程机械