Unknown involute spline

[mbl1980]

Hello

Does anyone can recognize this shape?

This is surely not an parallel spline standard I am familiar with as it contains 13 teeth (OD=~21.8mm)
(ISO14, DIN 5462, DIN 5463, DIN 5472, GOST 1139, CSN 01 4942)

It also doesn't exactly complies with involute spline. The closest match are "ISO 4156 30deg flat root side fit" or "DIN 5480 30deg flat root side fit" but I am not convinced.
OD=~21.6-21.8
Any ideas?

 

[Artisi]

How about a small clue as to where it is from.

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[mbl1980]

a hydraulic pump

 

[Artisi]

It's probably an in-house design that doesn't need to be to any standard, is that a problem?

It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)

 

[hydtools]

Ask the pump manufacturer.

Ted

 

[MintJulep]

Please use the option to post your image in line.

Makes life so much easier for the people trying to help you.

 

[MintJulep]

Who is the pump manufacturer? What country are they headquartered in? Is the company still alive?

 

[mfgenggear]

Take this part to a gear shop, with a cnc gear checker. That has unknown reverse engineer program.
Pay the dollars 150-300 range to get exact
Spline data.
Remember splines use max and min effective sizes and those attributes can only be measure spline gages.
Max actual and min acutual can be verified with span or measurement over wires.
Again pay to take it to a gear shop.

 

[mfgenggear]

@mbl1980
See the post at gear and pulley engineering.
Plenty of info.