Recent Updates

Database lookup improvements

SplineCAD database lookup improvements. Added performance indexes to the database for faster lookup of spline data.

2026-02-21

Single tooth space DXF export

Added the Single tooth space DXF export. Also improved the DIN 5480 shaft spline profile generation.

2026-02-11

Custom Inspection Pins and Spans for ANSI B92.1

Added the Custom Inspection Pins and Spans for ANSI B92.1. It is using the actual tooth thickness and space widths to match the style of the other standards and for improved lookup for reverse engineering spline data.

2026-01-25

ANSI B92.1 Min and Max Effective and Actual.

Added the Min and Max Effective and Actual tooth thickness and space width calculations to the ANSI B92.1 data tables. Added in the measurement over pins (MOP) and measurement between pins (MBP) range using the actual tooth thickness and space widths to match the style of the other standards and for improved lookup for reverse engineering spline data.

2026-01-23

DIN 5480 Hub Overlap Fix

Single tooth profile doesn't overlap with the rotated copies of the tooth profile.

2026-01-14

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Known Issues

• Root diameters for internal splines at large profile shifts are not accurate. Working on a fix.

• Use the Single tooth space DXF export to reduce point counts. Solidworks and Catia are slow to load the full spline profile.

• Resolution of some of the splines at large tooth counts and small modules/large diametral pitchs need improvement. Working on a fix.

• Display of the webpage on iOS devices is not optimal. Working on a fix.

• Fluidity on Mobile devices to view spline data is not optimal. Working on a fix.

Upcoming Features

Standards

• ANSI B92.2M Spline Profile

• DIN 5481 Spline Profile

• DIN 5482 Spline Profile

• ISO 1328 Spline Profile

• JIS B 1602 Spline Profile

• JIS D 2001 Spline Profile

Improvements

• API for spline data lookup and dxf export.

• Bearing ID diameter lookup reference.

• Power rating calculation for the spline.

• Export to additional CAD formats

• User preferences and settings

• Fluid display of spline data on Mobile devices

Added Features

• Single tooth space DXF export

• DIN 5480 Data Tables

• ANSI B92.1 Data Tables

• ISO 4156 30deg, 37.5deg, and 45deg Data Tables

• DXF Spline Profile Export Capability

• Hob generated geometry for the external spline ANSI B92.1 30deg, 37.5deg, and 45deg

• Hob generated geometry for the external spline ISO 4156 30deg, 37.5deg, and 45deg

• Shaper cut root geometry for the internal spline ANSI B92.1 30deg Flat Root and Full Fillet

• Shaper cut root geometry uses the max number of teeth allowed in the shaper cutter

• ISO 4156 Spline Profile Internal from shaper.

• ANSI B92.1 Spline Profile internal from shaper

• DIN 5480 Spline Geometry generated from shaper and hob

• Broached spline geometry for low tooth counts

• iPad friendly display of the webpage

• Button to convert between metric and imperial units

• Ability to select custom pin sizes for reverse engineering and inspection.

• All standard pin sizes for each standard are available for selection in custom pin sizes.

• ANSI B92.1 Data Tables now have the option to see the actual and reference tooth thickness and space width measurements.