1. Need help with math

a 360 turn of the hand wheel on my rotary table is 2.25 degrees of rotation of the table.
how much of a turn of the hand wheel = 1 degree of table rotation

2. 360 degrees rotation for handwheel = 2.25 degrees rotation for table

360 degrees / 2.25 = 160 degees

So 160 degrees rotation for handwheel = 1 degree rotation for table

3. 160 at the handwheel. Odd number though. Most rotary tables are 90:1.

4. Originally Posted by metlmunchr
160 at the handwheel. Odd number though. Most rotary tables are 90:1.
The other common ratio is 40:1.

• Originally Posted by metlmunchr
160 at the handwheel. Odd number though. Most rotary tables are 90:1.

Sherline's 4 inch tables are 72:1. Probably the most popular table ever.

Fred Smith - IMService

• Thats the number.
Turns into 425 steps in mach2

• Originally Posted by metlmunchr
160 at the handwheel. Odd number though. Most rotary tables are 90:1.
Yes, that 160 turn table would definitely not be classed as a user friendly rotary table for manual use!

• Hu, everyone knows true "user friendly" dividing devices have motors attached to them. Motors help prevent so much of our blood from draining out thru our knuckles