If you want a ball screw manufacturer to quote and produce a custom ball screw, you need to provide several key specifications. The more complete the information is, the more accurate the quotation and the easier the production process will be.

Basic Specifications (Required for quotation)

1- Ball screw diameter

2- Lead (or pitch)

3- Total screw length

4- Ball nut type

5- End Machining Dimensions (Very Important)

This is one of the most critical pieces of information.
You need to provide the end machining details, including:
Bearing seat diameter
Bearing seat length
Threads
Keyways
Snap ring grooves
Shoulder positions

Typical support configurations include:
BK / BF support
FK / FF support

The best way is to provide a technical drawing of the end machining.

6- Accuracy Grade (Recommended)

Common ball screw accuracy grades:
C7 – standard CNC machines
C5 – precision machines
C3 – high precision

7- Preload (If using double nuts)
If the screw uses a double nut configuration, specify the preload level.

8- Operating Conditions (Helpful for selection)

9- Very Helpful Information

Providing the following can greatly help the manufacturer:
Photos of the existing ball screw
The original ball screw model number
A drawing with all dimensions