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Text
gears.
BASE CIRCLE
What is base circle ? Many gears have tooth forms made up of involute curves called involute tooth forms. The circle that serves as the basis for drawing the involute curve is the base circle (d b) which size is determined by the pressure angle (α) and the pitch circle diameter (d ).d b = d cosα. For example as shown below, when a cord is wound on a circular tube, then unwound while held in BASIC GEAR TERMINOLOGY AND CALCULATION 2. Basic Gear Terminology and Calculation / Let’s learn the basics of Basic Gear Technology ! Gear size, pressure angle, number of teethwe introduce the basic terminology, measurement, and relational expressions necessary to understand basic gear technology. FREE GEAR CALCULATOR What is a gear calculator ? The gear calculator is a comprehensive software which, after inputting various parameters related to gear calculations, computes on-line automatically gear sizes, strengths, working forces, tooth forms, backlash conversions, etc.GEAR MODULE
What is the module of a gear ? In general, the size of a gear tooth is expressed as its module. The sizes of gear teeth using the module system are indicated with the symbol m followed by numerals such as m1, m2, and m4 where the teeth sizes get larger as the numerical valueincreases.
KNOW ABOUT PARAMETERS THAT DETERMINE GEAR SHAPES 'Know about parameters that determine gear shapes' is a page to explain the basic knowledge of gear shapes, some parameters to design gears and twist directions of helical gear teeth. KHK 기어 (일본)TRANSLATE THIS PAGE khk 기어 – 일본의 종합 기어 메이커로 표준화된 20,000여종의 기어 재고를 보유하고 한국, 미국, 영국, 인도, 호주 등 전 세계에 판매하고 있습니다.ZEROL BEVEL GEARS
About Zerol Bevel Gears Characteristics. Bevel gears are cone shaped gears which transmit motion between two intersecting shafts. Zerol bevel gears (trade marked by the Gleason Co.) are spiral bevel gears in which the spiral angle is zero at the middle of the face width. UNDERCUT | GEAR NOMENCLATURE | KHK GEARS Undercut – Gear Terminology. The undercut of gears is also called deeper cutting and indicates the phenomenon of cutting the root of the gear deeper than the involute tooth curve. KNOW ABOUT GEAR TRANSMISSION TORQUE 'Know about gear transmission torque' is the page explaining some factors such as load, efficiency and number of teeth of gears to calculate transmitted torque. KHK GEARS - GEAR MANUFACTURERSELECTING GEARSSTOCK GEARSGEAR CATALOGGEAR DRAWINGGEAR KNOWLEDGEWORM GEARS KHK Gears (Kohara Gear Industry) is a leading manufacturer of stock gears handling production and distribution of a large variety of stockgears.
BASE CIRCLE
What is base circle ? Many gears have tooth forms made up of involute curves called involute tooth forms. The circle that serves as the basis for drawing the involute curve is the base circle (d b) which size is determined by the pressure angle (α) and the pitch circle diameter (d ).d b = d cosα. For example as shown below, when a cord is wound on a circular tube, then unwound while held in BASIC GEAR TERMINOLOGY AND CALCULATION 2. Basic Gear Terminology and Calculation / Let’s learn the basics of Basic Gear Technology ! Gear size, pressure angle, number of teethwe introduce the basic terminology, measurement, and relational expressions necessary to understand basic gear technology. FREE GEAR CALCULATOR What is a gear calculator ? The gear calculator is a comprehensive software which, after inputting various parameters related to gear calculations, computes on-line automatically gear sizes, strengths, working forces, tooth forms, backlash conversions, etc.GEAR MODULE
What is the module of a gear ? In general, the size of a gear tooth is expressed as its module. The sizes of gear teeth using the module system are indicated with the symbol m followed by numerals such as m1, m2, and m4 where the teeth sizes get larger as the numerical valueincreases.
KNOW ABOUT PARAMETERS THAT DETERMINE GEAR SHAPES 'Know about parameters that determine gear shapes' is a page to explain the basic knowledge of gear shapes, some parameters to design gears and twist directions of helical gear teeth. KHK 기어 (일본)TRANSLATE THIS PAGE khk 기어 – 일본의 종합 기어 메이커로 표준화된 20,000여종의 기어 재고를 보유하고 한국, 미국, 영국, 인도, 호주 등 전 세계에 판매하고 있습니다.ZEROL BEVEL GEARS
About Zerol Bevel Gears Characteristics. Bevel gears are cone shaped gears which transmit motion between two intersecting shafts. Zerol bevel gears (trade marked by the Gleason Co.) are spiral bevel gears in which the spiral angle is zero at the middle of the face width. UNDERCUT | GEAR NOMENCLATURE | KHK GEARS Undercut – Gear Terminology. The undercut of gears is also called deeper cutting and indicates the phenomenon of cutting the root of the gear deeper than the involute tooth curve. KNOW ABOUT GEAR TRANSMISSION TORQUE 'Know about gear transmission torque' is the page explaining some factors such as load, efficiency and number of teeth of gears to calculate transmitted torque.COMPANY PROFILE
Company name: Kohara Gear Industry Co.,Ltd. Establishment: May, 1935: Capital: 99,000,000 Japanese Yen: Representative: Toshiharu Kohara:Number of employees
GEAR MODULE
What is the module of a gear ? In general, the size of a gear tooth is expressed as its module. The sizes of gear teeth using the module system are indicated with the symbol m followed by numerals such as m1, m2, and m4 where the teeth sizes get larger as the numerical valueincreases.
ROOT DIAMETER
The line connecting the roots of the teeth of the cylindrical gear is the root circle and its diameter is the root diameter.CENTER DISTANCE
For a pair of gears in mesh, the distance between the centers of the two gears (the minimum distance) is the center distance.PLASTIC GEARS
Plastic gears are made of light weight and rust proof material like engineering plastic and polyacetal (POM). In this page, we introduce various types of plastic gears. FREE GEAR CALCULATOR What is a gear calculator ? The gear calculator is a comprehensive software which, after inputting various parameters related to gear calculations, computes on-line automatically gear sizes, strengths, working forces, tooth forms, backlash conversions, etc.STOCK GEARS
KHK Stock Gears for Sale. Just as the name suggests, stock gears are defined as gears which are always stocked. When the gears of machines in operation break, the person in charge of the maintenance of the machines can immediately replace them if gears of the same shape are in stock at a supplier’s base.ACCURACY OF GEARS
Accuracy of Gears - Testing and Inspecting is a page to learn how to test and check the accuracy of gears. This page is a part of Introduction to Gears.TOOTH THICKNESS
Tooth Thickness is a page to learn methods of measurement of gear tooth. This is a part of KHK's Gear Technical Reference for allmachine designers.
KHK 기어 (일본)TRANSLATE THIS PAGE khk 기어 – 일본의 종합 기어 메이커로 표준화된 20,000여종의 기어 재고를 보유하고 한국, 미국, 영국, 인도, 호주 등 전 세계에 판매하고 있습니다. KHK GEARS - GEAR MANUFACTURERSELECTING GEARSSTOCK GEARSGEAR CATALOGGEAR DRAWINGGEAR KNOWLEDGEWORM GEARS KHK Gears (Kohara Gear Industry) is a leading manufacturer of stock gears handling production and distribution of a large variety of stock gears. While many gear manufacturers make gears only after receiving orders, our strength is having stock for quick delivery. By offering secondary operations on stock gears you have the convenience of being BASIC GEAR TERMINOLOGY AND CALCULATION Reference Diameter d = zm t = 30 × 2 = 60. The following is a calculation for the Reference Diameter of a helical gear with: Normal module m n = 2, Number of teeth z = 30, Helix angle β = 15° (R) Reference Diameter d = zm n / cos β = 30 × 2 / cos 15° = 62.117. CHARACTERISTICS OF GEARS 1-2 Characteristics of Gears. The teeth are straight and parallel to the shaft axis. Transmits power and motion between rotating two parallel shafts. The teeth are twisted oblique to the gear axis. Right-hand and left-hand helical gears mate as a set. But they must have the same helix angle.GEAR MODULE
What is the module of a gear ? In general, the size of a gear tooth is expressed as its module. The sizes of gear teeth using the module system are indicated with the symbol m followed by numerals such as m1, m2, and m4 where the teeth sizes get larger as the numerical valueincreases.
ZEROL BEVEL GEARS
About Zerol Bevel Gears Characteristics. Bevel gears are cone shaped gears which transmit motion between two intersecting shafts. Zerol bevel gears (trade marked by the Gleason Co.) are spiral bevel gears in which the spiral angle is zero at the middle of the face width.BASE CIRCLE
The circle that serves as the basis for drawing the involute curve is the base circle ( d b) which size is determined by the pressure angle (α) and the pitch circle diameter ( d ). d b = d cosα. For example as shown below, when a cord is wound on a circular tube, then unwound while held in tension, the trace drawn by the tip of the cord is CALCULATION OF GEAR DIMENSIONS Fig. 4.2 The Meshing of Profile Shifted Gears ( α = 20°, z1 = 12, z2 = 24, x1 = +0.6, x2 = +0.36 ) In the meshing of profile shifted gears, it is the operating pitch circle that is in contact and roll on each other that portrays gear action. KNOW ABOUT PARAMETERS THAT DETERMINE GEAR SHAPES 'Know about parameters that determine gear shapes' is a page to explain the basic knowledge of gear shapes, some parameters to design gears and twist directions of helical gear teeth. BENDING STRENGTH OF SPUR AND HELICAL GEARS Generally, bending strength and durability specifications are applied to spur gears and helical gears (including double helical and internal gears) to beused in industrial machines in the following range: Module m 1.5-25mm Pitch diameter d0 25-3200mm Tangential speed v 25m/s orslower
TOOTH THICKNESS
Tooth Thickness is a page to learn methods of measurement of gear tooth. This is a part of KHK's Gear Technical Reference for allmachine designers.
KHK GEARS - GEAR MANUFACTURERSELECTING GEARSSTOCK GEARSGEAR CATALOGGEAR DRAWINGGEAR KNOWLEDGEWORM GEARS KHK Gears (Kohara Gear Industry) is a leading manufacturer of stock gears handling production and distribution of a large variety of stock gears. While many gear manufacturers make gears only after receiving orders, our strength is having stock for quick delivery. By offering secondary operations on stock gears you have the convenience of being BASIC GEAR TERMINOLOGY AND CALCULATION Reference Diameter d = zm t = 30 × 2 = 60. The following is a calculation for the Reference Diameter of a helical gear with: Normal module m n = 2, Number of teeth z = 30, Helix angle β = 15° (R) Reference Diameter d = zm n / cos β = 30 × 2 / cos 15° = 62.117. CHARACTERISTICS OF GEARS 1-2 Characteristics of Gears. The teeth are straight and parallel to the shaft axis. Transmits power and motion between rotating two parallel shafts. The teeth are twisted oblique to the gear axis. Right-hand and left-hand helical gears mate as a set. But they must have the same helix angle.GEAR MODULE
What is the module of a gear ? In general, the size of a gear tooth is expressed as its module. The sizes of gear teeth using the module system are indicated with the symbol m followed by numerals such as m1, m2, and m4 where the teeth sizes get larger as the numerical valueincreases.
ZEROL BEVEL GEARS
About Zerol Bevel Gears Characteristics. Bevel gears are cone shaped gears which transmit motion between two intersecting shafts. Zerol bevel gears (trade marked by the Gleason Co.) are spiral bevel gears in which the spiral angle is zero at the middle of the face width.BASE CIRCLE
The circle that serves as the basis for drawing the involute curve is the base circle ( d b) which size is determined by the pressure angle (α) and the pitch circle diameter ( d ). d b = d cosα. For example as shown below, when a cord is wound on a circular tube, then unwound while held in tension, the trace drawn by the tip of the cord is CALCULATION OF GEAR DIMENSIONS Fig. 4.2 The Meshing of Profile Shifted Gears ( α = 20°, z1 = 12, z2 = 24, x1 = +0.6, x2 = +0.36 ) In the meshing of profile shifted gears, it is the operating pitch circle that is in contact and roll on each other that portrays gear action. KNOW ABOUT PARAMETERS THAT DETERMINE GEAR SHAPES 'Know about parameters that determine gear shapes' is a page to explain the basic knowledge of gear shapes, some parameters to design gears and twist directions of helical gear teeth. BENDING STRENGTH OF SPUR AND HELICAL GEARS Generally, bending strength and durability specifications are applied to spur gears and helical gears (including double helical and internal gears) to beused in industrial machines in the following range: Module m 1.5-25mm Pitch diameter d0 25-3200mm Tangential speed v 25m/s orslower
TOOTH THICKNESS
Tooth Thickness is a page to learn methods of measurement of gear tooth. This is a part of KHK's Gear Technical Reference for allmachine designers.
COMPANY PROFILE
Please see here for the KHK Company Profile. You can also find a message from our President, ISO certificate & contact addresses ineach country.
CENTER DISTANCE
For a pair of gears in mesh, the distance between the centers of the two gears (the minimum distance) is the center distance.ROOT DIAMETER
The line connecting the roots of the teeth of the cylindrical gear is the root circle and its diameter is the root diameter. FREE GEAR CALCULATOR Input the center distance between the pinion and the gear. 5. If needed, also input the gear cutting tool's tip rounding radius coefficient. 6. Input the number of teeth of the pinion and the gear. 7. Enter the precision grades of the two gears as well as absence or existence of tooth form correction (s). 8.PLASTIC GEARS
Plastic gears are made of light weight and rust proof material like engineering plastic and polyacetal (POM). In this page, we introduce various types of plastic gears.GEAR MATERIALS
Gear Materials is a page to learn typical types of materials used for gear manufacturing. This is a part of KHK's Gear Technical Reference. DETERMINING THE SPECIFICATIONS OF GEARS Steps. Count how many teeth a sample spur gear has z =. Measure its tip diameter da =. Estimate an approximation of its module, assuming that it has an unshifted standard full depth tooth, using the equation: Measure the span measurement of k and the span number of teeth. Also, measure the k –1. Then calculate the difference.GEAR FORCES
Gear Forces is a page to study the forces in various types of gears in details. This is a part of KHK's Gear Technical Reference for machinedesigners.
GEAR BACKLASH
Gear Backlash is a page to learn the backlash of gears. This is a part of KHK's Gear Technical Reference for all machine designers/builders. GEAR DESIGN PROCEDURE IN PRACTICAL DESIGN Index. In this series, we explain how to design gears and peripheral parts according to procedures using simple mechanisms. 1. Clarify specifications and determine basic elements This website uses cookies to improve your convenience. If you continue to use this website with its current settings, you are agreeing to our use of cookies. Please refer to the privacy policy for details. AcceptViewPrivacy Policy
TEL : +81 48 254 1744* HOME
* Selecting gears
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"Easy" Gear Selection Screen - Choose a gear by pitch, # of teeth, or bore size. - 2D/3D Drawings Available - PDF Catalog Available - Strength Calculation Available Go to Gear Selection ScreenCLOSE
KHK GEARS - STOCK GEAR MANUFACTURER KHK Gears (Kohara Gear Industry) is a leading manufacturer of stock gears handling production and distribution of a large variety of stock gears. While many gear manufacturers make gears only after receiving orders, our strength is having stock for quick delivery. By offering secondary operations on stock gears you have the convenience of being able to buy even one piece to meet your technical requirements. Our goal is to become the stock gear manufacturer beloved by customers allover the world.
Types of Gears
* Spur Gears
* Worm Gears
* Bevel Gears
* Gear Rack
* Helical Gears
* Miter Gears
* Plastic Gears
* Screw Gears
* Internal Gears
* Bevel Gearbox
* Other Products
WHY KHK ?
AN EXTENSIVE RANGE OFOVER 20000 TYPES
By putting together a range of various materials, shapes and pitches, we are able to provide gears that perfectly fit your applications. We carry nearly every type of gear imaginable. Even if our stock gears do not meet the requirements of a customer, we can accommodate any request with our custom gears. ALL GEARS ARE IN STOCK (*EXCLUDING J SERIES) As the gears are in stock, they can be shipped immediately after yourorder.
As a dedicated gear manufacturer, we carry the industry’s largestinventory of gears.
EXTENSIVE TECHNICAL DATA KHK stock gears are all pre-designed gears. Since there is extensive technical information, gear design on the customer side is unnecessary. We can provide gear drawing in paper format, 2D CAD or 3D CAD. NO MINIMUM ORDER QUANTITY KHK can provide stock gears at reasonable prices, even for orders of asingle gear.
Most of our gears, regardless of type, are manufactured in large lots, so the unit price is the same no matter how many you purchase, whetherone unit or ten.
ALL INDIVIDUALLY PACKAGED All gears are individually packaged for convenient and safe storage. Gears are carefully packaged using the most appropriate materials and method for the gear type. THE HIGH-RELIABILITY OF JAPAN-MADE PRODUCTS Our gears are all manufactured under Japan’s strict quality controlstandards.
At KHK, we excel at consistently manufacturing uniform and high quality products, which are backed by our extensive track record. MODIFICATIONS ARE POSSIBLE Gears can be modified according to your individual specifications. This makes it possible to accommodate precise customer specifications not possible with conventional stock gears. NO. 1 IN MARKET SHARE KHK boasts the No.1 market share in the Japanese stock gear market (According to our own research). As an independent gear manufacturer, we take great pride in the KHKbrand.
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KHK Gears - Kohara Gear Industry Co.,Ltd. 13-17 Nakacho Kawaguchi-shi Saitama-ken, 332-0022, Japan TEL : +81 48 254 1744 FAX : +81 48 254 1765 Copyright© 2015 Kohara Gear Industry Co.,Ltd. All Rights Reserved.Details
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