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DIAMETRAL PITCH GEAR

Product catalog summary

Overview: This document serves as a technical catalog for gears provided by Quality Transmission Components, detailing spur, bevel, miter, and worm gears. It includes specifications, material details, dimensional tolerances, and recommendations for optimal performance.

Specifications:

Materials: Gears are primarily made from carbon steel (M1015, 1213, M1040), with some options in brass or polyacetal. Worm gears feature a phosphor bronze rim and steel hub.
Bore Tolerances: Specific tolerances are provided for each gear type and size.
Pressure Angle: A standard 20° pressure angle is used, with spiral miter gears having a 35° helix angle.

Gear Types and Details:

Spur Gears: Available in various diametral pitches (DP) with catalog numbers and dimensions.
Spiral Miter Gears: Offered with a 1:1 gear ratio and specific angular accuracy requirements.
Spiral Bevel Gears: Available in 2:1 and 3:1 gear ratios with detailed specifications.
Straight Bevel Gears: Provided in 3:2 gear ratios with material options.
Worm Gears and Shafts: Categorized by DP with single, double, and quadruple thread options.

Dimensional Data:

Includes bore diameter, hub diameter, outside diameter, pitch diameter, and overall length for each gear type.
Catalog numbers are provided for reference and ordering.

Procedures and Norms:

Lead Angles: Specific angles are provided for each thread type.
Pressure Angle: A standard 20° angle is used for right-hand worm threads.

Recommendations:

Maintain angular accuracy between shafts within ±0° 5'.
Shaft axes should intersect within ±.001 for optimal performance.
Helical vs. Spur Gears: Helical gears are recommended for quieter operation due to smoother gear mesh.

Key Data from Tables and Charts:

Ratios and Teeth Count: Various gear ratios and teeth counts are listed for different mechanical requirements.
Sound Levels: Helical gears reduce noise levels from 65db(A) to 60db(A) compared to spur gears.

Catalog excerpts

www.qtcgears.com 48 DP to 24 DP Spiral Miter Gears INCH -JnnMPnNFNT 1:1 Gear Ratio 35° Helix Angle - 20° Pressure Angle ՕSi ce < LU u H CL < ce H LU S < a <5 00 MATERIAL: Steel or Brass Catalog Number Pitch Diameter Diameter Teeth QG-MSR48-48S QG-MSR48-48B R 48 48 .250 .790 1.000 1.023 QG-MSL48-48S QG-MSL48-48B L QG-MSR32-17S QG-MSL32-17S QG-MSR32-17B QG-MSL32-17B R L 32 17 .188 .390 .531 .569 QG-MSR24-24S QG-MSL 24-24S QG-MSR24-24B QG-MSL 24-24B R L 24 24 .312 .780 1.000 1.052 Catalog Number Mounting Distance Steel Brass QG-MSR48-48S QG-MSL48-48S QG-MSR48-48B QG-MSL48-48B .827 .465 .286 .187...

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Axial Pitch - .0208 inch www.qtcgears.com 48 DP Worms and Worm Gears INCH -JnnMPnNFNT 20° Pressure Angle Right-Hand Worm Thread ՕSi ce < LU .100 U H CL 0.542 TAP M3 < ce H LU S < MATERIAL: Worm - Steel Worm Gear - Phosphor Bronze Rim, Steel Hub Catalog Number Catalog Number No. of Worm Worm Gear QG-WP48-1S QG-WW48-1-090PB 90 90:1 1.187 1.932 1.875 Single Thread QG-WW48-1-100PB 100 100:1 1.292 2.140 2.083 Lead Angle 2° 23' NOTE: Other 48 DP worms and worm gears, of one-piece construction, are shown on the previous page. E o g Quality Transmission Components 5-29

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Axial Pitch - .0312 inch www.qtcgears.com 32 DP Worms and Worm Gears INCH ^COMPONENT 20° Pressure Angle Right-Hand Worm Thread A S m .120 0.562 +:00ծ TAP M3 0OD MATERIAL: Worm - Steel Worm Gear - Phosphor Bronze Catalog Number Ca talog Number No. of Teeth ■Ofpseie! Worm Worm Gear QG-WP32-1S Single Thread Lead Angle 3° 35' QG-WW32-1-048PB QG-WW32-1-050PB 48 50 48:1 50:1 1.000 1.031 1.585 1.647 1.500 1.563 NOTE: 60 thru 100 tooth worm gears are two-piece constructions and are shown on the next page. QG-WP32-2S QG-WW32-2-040PB 40 20:1 .875 1.335 1.250 Double Thread QG-WW32-2-048PB 48 24:1 1.000...

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Axial Pitch - .0312 inch www.qtcgears.com 32 DP Worms and Worm Gears INCH ^COMPONENT 20° Pressure Angle Right-Hand Worm Thread f-.750 ՕSi ce < LU CD 0.562 u H CL < ce H LU S < 0OD 0.750 MATERIAL: Worm - Steel Worm Gear - Phosphor, Bronze Rim, Steel Hub 0.500 Catalog Number Catalog Number Center Outside Pitch Worm Worm Gear Diameter QG-WW32-1-060PB 60 60:1 1.187 1.960 1.875 QG-WP32-1S QG-WW32-1-070PB 70 70:1 1.344 2.272 2.187 QG-WW32-1-080PB 80 80:1 1.500 2.585 2.500 Single Thread Lead Angle 3° 35' QG-WW32-1-090PB 90 90:1 1.656 2.897 2.813 QG-WW32-1-100PB 100 100:1 1.812 3.210 3.125 NOTE: 48 and...

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helical Gears MAKE A DIFFERENCE YOUCANHEAR Helical Gears vs Spur Gears Helical gears have slanted teeth compared to spur gears with straight eut teeth, producing a smoother gear mesh, resulting in a significant reduction in noise levels. ■ Smooth, quiet operation ■ Input speeds up to 6,000 rpm Typical sound level diffrence between spur gearing (left) and helical eut gearing. The db(A) scale is logarlthmic. An increase of 3db doubles the apparent volume.

Open the catalog to page 34

DIAMETRAL PITCH GEAR

DIAMETRAL PITCH GEAR

Catalog excerpts

All Quality Transmission Components catalogs and technical brochures