Other
Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this Chapter; profile projectors. > Parts and accessories > Other
Duty Rate (from China)
Products classified under Tariff item 9031.90
Aluminum CMM Portal Frame
An aluminum gantry frame designed for high-speed gantry-style coordinate measuring machines (CMMs). It features precision-machined guideways and thermal compensation slots to support the machine's structural integrity and measurement accuracy. This base/frame is essential for the operation of the CMM and falls under tariff item 9031.90.10 as a base or frame for coordinate measuring machines.
9031.90.10Cast Iron CMM Frame
A heavy-duty cast iron structural frame that serves as the rigid skeleton for bridge-style coordinate measuring machines (CMMs). It includes kinematic mounts for probe alignment and vibration damping, ensuring measurement stability. This frame is a base/frame for a CMM and is classified under tariff item 9031.90.10.
9031.90.10CMM Bridge Structure Frame
An aluminum bridge beam frame designed for cantilever-style coordinate measuring machines (CMMs). It is precision-machined for linear guide integration and minimal deflection, providing structural support for the measuring system. This frame falls under tariff item 9031.90.10 as a base/frame for coordinate measuring machines.
9031.90.10CMM Gantry Crossbeam Frame
A hollow aluminum crossbeam frame for large gantry-style coordinate measuring machines (CMMs). It features internal ribbing for stiffness-to-weight optimization, ensuring structural rigidity during measurement. This crossbeam is a base/frame for a CMM and is classified under tariff item 9031.90.10.
9031.90.10CMM Granite Table with T-Slots
A granite measuring table with integrated T-slot fixturing system for coordinate measuring machines (CMMs). It provides a reference datum surface and workpiece clamping, essential for accurate measurements. This table is a base for a CMM and falls under tariff item 9031.90.10.
9031.90.10Granite Base for CMM
A precision-ground granite surface plate used as the stable base for coordinate measuring machines (CMMs). Its low thermal expansion and high rigidity ensure accurate 3D measurements by minimizing vibration. This base is classified under tariff item 9031.90.10 as a base for coordinate measuring machines.
9031.90.10Precision Steel CMM Base Frame
An epoxy-granite composite steel frame base for horizontal arm coordinate measuring machines (CMMs). It features optimized stress-relieved construction to prevent measurement drift. This base is a base/frame for a CMM and falls under tariff item 9031.90.10.
9031.90.10Vibrations-Isolated CMM Base
A granite base with integrated pneumatic vibration isolation mounts for coordinate measuring machines (CMMs). It provides sub-micron stability for high-precision coordinate measurement. This base is classified under tariff item 9031.90.10 as a base for coordinate measuring machines.
9031.90.90Profile Projector Calibration Standard Kit
A precision chrome-plated calibration gage block set specifically designed for verifying the accuracy of profile projectors. These standards are NIST-traceable, ensuring that measurements taken with the projector comply with quality control requirements. This set is an accessory used exclusively with profile projectors, which fall under heading 90.31.
9031.90.90Profile Projector Digital Readout Interface
An interface module that connects profile projector stages to digital readout displays, converting encoder signals into precise dimensional data for X-Y measurements. This electronic component is specifically designed for use with profile projectors, which are measuring instruments of heading 90.31. It functions as an accessory that enhances the measuring capabilities of the projector.
9031.90.90Profile Projector Dust Cover System
A custom accordion-style dust cover designed to protect the precision mechanics of profile projector worktables and columns. This protective accessory is specifically engineered to fit particular projector frame dimensions, ensuring it is dedicated for use with these measuring instruments. It is not a general-purpose cover but a tailored component for profile projectors.
9031.90.90Profile Projector Edge Detector Sensor
An optical edge detection sensor used in automated profile projectors to identify workpiece boundaries for digital measurement. This sensor integrates with the projection system to achieve sub-pixel accuracy in dimensional inspection. It is a dedicated component of profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Encoder Feedback Kit
A linear glass scale encoder kit designed for profile projector measuring stages, providing closed-loop position feedback with high-resolution digital output. This kit is specifically intended for integration with digital readout systems on profile projectors. It is an electronic component dedicated to enhancing the measurement accuracy of these instruments.
9031.90.90Profile Projector LED Illuminator Module
A high-intensity LED contour illuminator module tailored for profile projectors, providing uniform backlight for sharp edge projection. This module replaces traditional halogen systems to improve measurement precision. It is a dedicated lighting component for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Objective Lens Assembly
A precision objective lens assembly designed specifically for profile projectors used in measuring and checking machine parts. This lens projects magnified images of contours onto a screen for accurate dimensional inspection. It is an optical component dedicated to profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Overlay Template Holder
An adjustable magnetic holder for Mylar or acetate overlay templates on profile projector screens. This holder facilitates direct comparison of projected profiles against master templates for dimensional inspection. It is a dedicated accessory for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Projection Screen
A high-resolution ground glass screen for profile projectors that displays clear, distortion-free magnified profiles of workpieces. This screen is essential for visual measurement and comparison against templates. It is a dedicated component of profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Quick-Change Lens Turret
A rotary lens turret mechanism holding multiple magnification objectives for profile projectors. This turret enables rapid lens changes without realignment, improving measurement efficiency. It is a precision mechanical component dedicated to profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Telecentric Lens Adapter
An adapter ring and mounting bracket that converts standard profile projectors for use with telecentric optics. This adapter eliminates parallax error in critical measurements, enhancing accuracy. It is a dedicated optical accessory for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Vertical Motion Mechanism
A servo-driven vertical adjustment mechanism for profile projector optical heads, providing focus control. This mechanism ensures sharp projection across workpieces of varying heights. It is a dedicated mechanical component for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Vibration Isolation Mounts
Granite base isolation mounts with pneumatic leveling for profile projectors, minimizing vibration effects on measurements. These mounts are engineered for specific projector footprints, ensuring stability during inspection. They are dedicated support components for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector Worktable Clamp Set
A precision clamp set for securing workpieces on profile projector stages, featuring fine adjustment mechanisms. This clamp ensures stable positioning for accurate silhouette projection and measurement. It is a dedicated accessory for profile projectors, which are measuring instruments of heading 90.31.
9031.90.90Profile Projector X-Y Measuring Stage
A precision X-Y linear stage with micrometer drives for profile projectors, enabling exact workpiece positioning. This stage features 0.001mm resolution for dimensional verification. It is a dedicated component of profile projectors, which are measuring instruments of heading 90.31.