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Technical Gear Info


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Rules & Formulas
• Symbol for Rules & Formulas
• Diametral Pitch Spur Gears
• Circular Pitch Spur Gears
• Worm Gears
• Helical Gears
• Involute Splines & Serrations 30° PA
• Standard SAE Parallel Key Spline
• Point Width Conversion for Straight Sided Spline

Gear Verniers
• Gear Tooth Verniers
• Chordal Thickness & Chordal Addendum of Gear Teeth

Stub Involute Function
• Method of Producing Stub Depth Gear & Splines
• The Inverse of the Involute Function

Wire Measurements
• External Spur Gears
• Determining Dimension Over Pins
• Determining Arc Teeth Thickness Given Dimensions Over Pins
• Internal Spur Gears
• Determining Dimension Under Pins
• Determining Arc Space Width Given Dimensions Under Pins
• External Helical Gears
• Determining Dimensions Over Pins or Balls
• Determining Tooth Thickness of External Helical Gear With Dimension Over Pins or Balls
• Internal Helical Gears
• Determining Dimensions Under Pins or Balls
• Determining Space Thickness Given Dimensions Under Pins or Balls

Span Measurements
• Span Measurements 14-1/2° PA
• Span Measurements 20° PA
• Span Measurements 25° PA
• Span Measurements 30° PA

Tooth Dimensions
• Standard Tooth Dimensions
• Tooth Chart, 2.157/DP System DP
• Tooth Chart, 2.25/DP System DP
• Tooth Chart, 2.20/DP + .002 System DP
• Tooth Chart, 2.15/DP System CP
• Tooth Chart Module, 2.25/DP Depth System

Timing Belt Chains & Sprockets
• American Standard Timing Belts
• Full Radius Timing Belt

Synchroflex Timing Belts
• Tooth Forms for Both T & AT Versions (T versions)
• Tooth Forms for Both T & AT Versions (AT versions)
Omni Gear does not sell Belts.

DIN7721 Chain & Sprockets
• Synchroflex O.D., "T" & "AT" Chart
• Design Formulas for ASA Roller Chain Sprockets

Cycliodal Sprocket Chains & Sprockets
• Original Method of Developing Cycloidal Tooth Form
• Original Method of Developing Cycloidal Tooth Form (cont'd)

Conveyor Chain Chains & Sprockets
• Conveyor Chain (Pitch Diameter, Maximum Outside & Bottom, Diameter for Normal Range of Sprocket Teeth Available with a Type A Tooth Form Sprocket)
• Sprocket Tooth Form Type A Radius Tooth Form
• Sprocket Tooth Form Type B Straight Face Tooth Form

Straight Sided Serrations
• Serrated Shaft Ends - SAE J500
• British Straight-Sided Serration Standard
• British Straight-Sided Serration Standard (cont'd)

Involute Splines
• Old American Standard
• ANSI B92.1-1970
• Flat Root Major Diameter Fit
• Fillet Root Side Fit
• Flat Root Side Fit
• ANSI B92.1-1970 Formulas for the Basic Dimensions 30°, 37.5° & 45° PA
• ANSI B92.1-1970 Maximum Tolerance for Space Width & Tooth Thickness of Tolerance Class 5 Splines
• ANSI B92.1-1970 Interchangeability
• Internal Major Diameters 8/16 DP & 10/20 DP, 30° PA
• Internal Major Diameters 12/24 DP & 16/32 DP, 30° PA
• Internal Major Diameters 37-1/2° & 45° PA (Full Fillet Side Fit)

DIN 5480 Inv. Splines
• Module-DIN 5480 Flat Root Involute Splines

DIN 5481 55° Inc.
• DIN 5481 Serration -- 55° Included

DIN 5481 60° Inc.
• DIN 5481 Serration -- 60° Included

DIN 5482 Inv. Splines
• Module-DIN 5482 Involute Spline Profile Dimensions

JIS Inv. Splines
• Involute Spline for Automobiles (Japanese Industrial Standard)
• Involute Spline for Automobiles (Japanese Industrial Standard, cont'd)

External Parallel Spline
• American Standard Parallel Splines

Internal Parallel Spline
• American Standard Parallel Splines

Parallel Splines
• Metric Parallel Spline Shaft Connections DIN 5462
• Metric Parallel Spline Shaft Connections DIN 5463

Quick Reference Depth Charts
• Base Pitch Chart

Helical Gear Conversion Chart
• Circular Pitch Conversion Chart
• Involute Spline Chart

Point Width Charts
• Roller Chain Sprocket 
• Module Conversion Chart 

Fine Pitch Spur & Helical Master Gears Arbor Mounted Type
• Master Gears 
• Classification by Composite Tolerance 

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Internals •  Straight Side Spline •  Timing Belt Pulley •  HTD Pulley •  Metric Gear
 
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PH: 800-876-7216 - FX: 815-723-9207
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