Granite V-Block

1.Introduction

A Granite V-Blockis a precision measurement tool used forsupporting,inspecting,and aligning cylindrical workpiecesin machining,metrology,and quality control applications.Made from high-quality granite(typically pink or black),these blocks offerexceptional stability,wear resistance,and thermal stability,making them ideal for high-precision environments such aslaboratories,CNC machining centers,and calibration facilities.

2.Key Features&Advantages

-Material Properties:

-Granite(Pink/Black):Naturally stable,corrosion-resistant,non-magnetic,and unaffected by temperature fluctuations.

-Surface Finish:Precision-ground to000-grade or Class AAflatness(e.g.,1.5µm tolerance for 63×63mm blocks).

-Design:

-90°V-Groove:Ensures accurate centering of cylindrical parts(e.g.,shafts,pipes).

-Multi-Face Machining:Some models feature5 finished facesfor versatile positioning.

-Durability:Resists acids,alkalis,and heavy loads(e.g.,up to 380 lbs capacity).

3.Types&Specifications

1.Standard V-Blocks

-Single/Double V-Grooves:For basic alignment tasks.

-Sizes:Common dimensions include63×63mm,100×100mm,160×160mm.

2.Precision-Grade V-Blocks

-000/1-Grade Accuracy:For metrology labs(e.g.,±4µm parallelism tolerance).

3.Adjustable V-Blocks

-Incorporatethreaded clampsfor securing irregular workpieces.

4.Applications

-Metrology:Checkingconcentricity,parallelism,and runoutof cylindrical parts.

-Machining:Supporting shafts duringgrinding,milling,or EDM processes.

-Quality Control:Used withheight gauges or CMMsfor dimensional inspection.

5.Selection Guide

-Load Capacity:Choose based on workpiece weight(e.g.,6–380 lbs).

-Accuracy:Opt for000-gradefor lab use;1-gradesuffices for workshops.

-Accessories:Pair withgranite surface platesfor full measurement setups.

6.Maintenance&Calibration

-Cleaning:Usealcohol or lint-free clothsto avoid scratches.

-Recalibration:Recommendedannuallyfor lab-grade blocks(NIST traceability available).