[ Log In ]
[ Register ]
NEW: CNC Router PLANS Available for all of our Newest CNC Models!! Click here to "Design Your CNC".

Question #: 14063

Question: If I buy the 1/2" 5 start lead screw and the 3/8" 5 start lead screws will it all work together

Current Solution

If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

Additional Information:
Let me explain in more detail.

Let's say you have two lead screws:

- 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

- 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

Respond:

Other Possible Solutions to this Question

  • Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

  • Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2" 5 start lead screw and the 3/8" 5 start will it all work together in unison

  • Will the 1/2"5 start and 3/8" 5 start work in unison even though the turns per inch is different

    If the turns per inch on a lead screw is different, then the nut on the lead screw will move at a different velocity.

    Additional Information:
    Let me explain in more detail.

    Let's say you have two lead screws:

    - 1/2" 5 starts at 10 TPI = 2 turns per inch. (5 starts / 10 TPI = 1/2 inches per turn or 10 TPI / 5 Starts = 2 turns per inch.)

    - 3/8" 2 starts at 10 TPI = 5 turns per inch. (2 starts / 10 TPI = 1/5 inches per turn or 10 TPI / 2 starts = 5 turns per inch.)


    So, if two stepper motors (one connected to the 1/2" lead screw and the other connected to the 3/8" lead screw) turned 10 revolutions in 2 seconds, the 1/2" lead nut would travel 5 inches and the 3/8" lead nut would travel 2 inches at the 2 second mark.

    Click the link to respond:
    Will the 1/2"5 start and 3/8" 5 start work in unison even though the turns per inch is different

  • If I order 19ft of the 1/2" lead screw will it come in three 6'5" lengths by default? This is what I need. Thanks

    No they will not come in that length as a default, we would contact the buyer to ask specific lengths due to the total length purchased.

    However if you order the 1/2" lead screw we can get them cut to the specific length you require, by contacting us here or call us at 281-815-7701.

    Click the link to respond:
    If I order 19ft of the 1/2" lead screw will it come in three 6'5" lengths by default? This is what I need. Thanks

  • I just changed my X and Y to the ACME 1/2" 5 start lead screw. What are the motor tuning numbers. I have the book built machine.

    The settings that will have to be change will be your steps per inch in motor tuning (mach 3), or settings/axes(planetCNC). But we do not have the actual numbers/specs that will fit your 10 TPI 5 start lead screw, here is a tutorial video which explains how to get the exact numbers you need! (

    )

    Click the link to respond:
    I just changed my X and Y to the ACME 1/2" 5 start lead screw. What are the motor tuning numbers. I have the book built machine.

  • Can I increase the travel speed of my machine with different lead screws?

    Changing your lead screws from a tight to a lose lead will definitely make your machine move faster as long as your stepper motors can handle the new torque that the lead screws will impose.

    Here is an example of a speed change from one lead screw to another:
    - Existing constants in the example: Stepper Motor steps 200, microstepping 1/8 making the total steps 200 * 8 = 1600.
    - Old lead screw: 1/2" allthread = 13 threads per inch (UNC)
    - New Lead Screw: 1/2" 5 starts, 10 TPI = 10 / 5 = 2 turns per inch

    Old lead screw would achieve a steps per inch of:
    1600 / (1 inch / 13 turns) = 20,800 steps per inch (You can also express the calculation as 1600 * 13 = 20,800 steps/inch)

    New lead screw would achieve a steps per inch of:
    1600 / (1 inch / 2 turns) = 3200 steps per inch

    You can see that the new lead screw requires far fewer steps to get to the same length of travel. If you maintained the same velocity for both examples, the new lead screw would travel the same distance 13/2 = 6.5 times faster. So, if your velocity was say 10 ipm, your new velocity would be 65 ipm. That would translate to far fewer burned edges and longer end mill life!

    Just remember, confirm that your motors will be able to handle the new lead screw. You will need to reduce the steps/inch causing the motor torque to increase quite a bit, so you should be fine.

    Click the link to respond:
    Can I increase the travel speed of my machine with different lead screws?

  • What are the other two dimensions of the 1/2" ID bearings used to support lead screws?

    Inside Diameter: 1/2" (actual dimension 0.4975 inches or 12.63 mm)

    - Outside Diameter: 1.122 inches or 28.4988 mm

    - Thickness: .31 inches or 7.89 mm

    Thank you for this question as it caused me to update the description:
    https://www.buildyourcnc.com/item/bearing-!5-standardbearing

    Click the link to respond:
    What are the other two dimensions of the 1/2" ID bearings used to support lead screws?

  • I am building a cnc router with twin ball screws on the long axis and I will have a rotary axis as well. I need a 5 axis breaker board using only 4 axis total. Can you help me?

    Yes, we can make a redLeaf system that has all 6A drivers for use with the 651 oz-in motors. We can also wire the electronics in a way that two of the drivers will use the pins of the same axis so that axis will drive two drivers and motors.

    Click the link to respond:
    I am building a cnc router with twin ball screws on the long axis and I will have a rotary axis as well. I need a 5 axis breaker board using only 4 axis total. Can you help me?

  • Can’t find info about all three lead screws in you book or how to secure them

    The details will differ depending on the type of lead screw you use.

    For allthread lead screws, you will need the 1/2" square nut, 1/2" allthread lead screw, two 1/4" screws and nuts to hold the square nut in place, two 1/2" ID bearings, two standard 1/2" nuts, and one coupling hub.

    Attach the square nut to the nut support using the two 1/4" screw and nuts. The bearings will need to be inserted into the seats of the lower and upper part of the z-axis. Insert the lead screw through the top bearing. Use one of the standard 1/2" nuts and start threading it on the allthread screw just below the bearing. Lower the lead screw to the square nut and start to screw the lead screw into the square nut. Continue until the screw is near the lower bearing. Add another standard 1/2" nut to the screw and keep turning the screw until the screw just passes the lower bearing. Add the coupling hub to the top of the screw just above the upper bearing. Turn the lower and upper standard 1/2" nuts until they are snug against the bearing. If the standard 1/2" nuts become loosened, consider adding another nut to each end against the existing nut to keep them in place.

    For 1/2" acme 5 start lead screws, you will need to use an antibacklash nut in place of the square nut. This nut attaches with a flange using two #8 screws and nuts. The standard 1/2" nuts are replaced by clamping collars.

    Click the link to respond:
    Can’t find info about all three lead screws in you book or how to secure them

  • should all three lead screws be a 5 start?

    The precision and number of starts for a lead screw will depend on the application. Having an ACME lead screw with 5 starts is a good balance for many applications so the machine will travel quickly along the axes with motors that hold best torque at low RPM. All three axes would benefit from 5 start lead screw for general applications.

    Click the link to respond:
    should all three lead screws be a 5 start?

  • Are there contour type brushes available for leadscrews and round rails

    Yes, you can use these flexible strip brushes and create a mount for the contour that you need:

    https://www.buildyourcnc.com/item/strip-brush

    Click the link to respond:
    Are there contour type brushes available for leadscrews and round rails

  • I want my cnc to move quicker. I want to update my lead screws. will this make my cnc move quicker on all 3 axis. If it would which lead screw is better 2 turns per inch or 5 turns per inch.

    Changing your lead screws from a tight to a lose lead will definitely make your machine move faster as long as your stepper motors can handle the new torque that the lead screws will impose.

    Here is an example of a speed change from one lead screw to another:
    - Existing constants in the example: Stepper Motor steps 200, microstepping 1/8 making the total steps 200 * 8 = 1600.
    - Old lead screw: 1/2" allthread = 13 threads per inch (UNC)
    - New Lead Screw: 1/2" 5 starts, 10 TPI = 10 / 5 = 2 turns per inch

    Old lead screw would achieve a steps per inch of:
    1600 / (1 inch / 13 turns) = 20,800 steps per inch (You can also express the calculation as 1600 * 13 = 20,800 steps/inch)

    New lead screw would achieve a steps per inch of:
    1600 / (1 inch / 2 turns) = 3200 steps per inch

    You can see that the new lead screw requires far fewer steps to get to the same length of travel. If you maintained the same velocity for both examples, the new lead screw would travel the same distance 13/2 = 6.5 times faster. So, if your velocity was say 10 ipm, your new velocity would be 65 ipm. That would translate to far fewer burned edges and longer end mill life!

    Just remember, confirm that your motors will be able to handle the new lead screw. You will need to reduce the steps/inch causing the motor torque to increase quite a bit, so you should be fine.

    Click the link to respond:
    I want my cnc to move quicker. I want to update my lead screws. will this make my cnc move quicker on all 3 axis. If it would which lead screw is better 2 turns per inch or 5 turns per inch.

  • How do I order the 10 TPI 5-start 2-turns-per-inch screws?, just shows $ per inch with no option for lenght.

    When purchasing the 1/2" 5 start lead screw, the length is based on the quantity. Specify the total length you will need and we will email you (if you don't contact us first) to determine the cut lengths.

    For example, if you desire 36 inches of lead screw for the X axis and 12 inches of lead screw for the Y axis, just purchase 48 inches of lead screw and tell us you need this lead screw cut so you have two lengths at 36 inches and 12 inches.

    Click the link to respond:
    How do I order the 10 TPI 5-start 2-turns-per-inch screws?, just shows $ per inch with no option for lenght.

  • Regarding 1/2" 5 start and 10 TPI ACME precision lead screw, what the maximum length you can ship within USA? I'm looking for something like 100" and I could use a 1" screw if available. Please include estimated price. Thanks.

    The maximum length we can ship is a total of 78" inches. However we can send your required length in portions. Please refer to adding the total items you require to your cart to get a visualized amount and shipping cost.

    Click the link to respond:
    Regarding 1/2" 5 start and 10 TPI ACME precision lead screw, what the maximum length you can ship within USA? I'm looking for something like 100" and I could use a 1" screw if available. Please include estimated price. Thanks.

  • If using a grease how does one protect leadscrews and rails from corian dust etc.

    If you have abrasive particles in the air from milling, you will want to periodically clean the mechanical parts like the lead screw and anti-backlash nuts. After cleaning the parts, all of the high friction parts that will be in constant contact, lubricating the parts with oils, grease or other lubricants. If the part is of steel material, that material will definitely need to be oiled, greased or lubricated so minimal oxidation will affect the exterior of the steel parts.

    The anti-backlash nut is made of Delrin, so petroleum chemicals like oils, grease or lubricants are ok to use. Abrasive particles may affect the anti-backlash nut over time; however, the spring and bushing of the anti-backlash nut will provide extensive use regardless of the wear.

    Click the link to respond:
    If using a grease how does one protect leadscrews and rails from corian dust etc.

  • do you guys sell full set of lead screws, machined with bearings and mounts?

    We sell all of those parts and if you need the lead screw machined to a specific spec, we can do this. To provide the specs, please send an email to us from the contact us page, link located in the footer.

    If there is a specific part you need, please let us know and we can let you know if we have it, or if we can start carrying it.

    Click the link to respond:
    do you guys sell full set of lead screws, machined with bearings and mounts?

  • Do you sell leadscrews and ballnuts that are 5 TPI? I'd like 0.001" per step, using a 200 steps/rev (1.8 degree) motor.

    We sell leadscews and anti-backlash nuts at the moment. Ballnuts will be available from us in the future.

    Specifically to your question, you want 0.001" resolution:

    The formula: (we are looking for a minimum of 1000 steps per inch
    steps = (motors steps)/(travel with one motor rotation)

    steps = (200 natural motor steps) x (microsteps ) / 0.5" travel (1/2" leadscrew 10 TPI 5 Starts)

    steps = 200 * microsteps / 0.5"

    multiply both sides by 0.5":

    steps * 0.5" = 200 * microsteps

    divide both sides by 200:

    (steps * 0.5") / 200 = microsteps

    replace steps with 1000:

    (1000 * 0.5") / 200 = microsteps

    500 / 200 = microsteps

    2.5 microsteps will provide .001"

    I would recommend 4 microsteps (1/4 microstepping), so your formula will be as follows:

    steps = steps/inch = (200 * 4) / 0.5" = 800 / 0.5" = 1600 steps/inch

    Click the link to respond:
    Do you sell leadscrews and ballnuts that are 5 TPI? I'd like 0.001" per step, using a 200 steps/rev (1.8 degree) motor.

  • Would like to purchase variation of Blackfoot 4'x8' , I would like to leave out the structure, add two 1/2"-1/4" couplers and switch to 1/4" drive sprockets for the X axis, and finally use two 3/8" drive screws instead of one 1/2". How should I proceed?

    For a special request that entails modifying the components of a kit and replace with specific components, you should call the office at 281-815-7701

    Click the link to respond:
    Would like to purchase variation of Blackfoot 4'x8' , I would like to leave out the structure, add two 1/2"-1/4" couplers and switch to 1/4" drive sprockets for the X axis, and finally use two 3/8" drive screws instead of one 1/2". How should I proceed?

  • I am having a significant amount of trouble getting the 1/2" ID bearing to fit over the 1/2" 5 start lead screw. I can only get it about half an inch onto the rod. Any tips to get it to slide further?

    There should be no problem with getting the 1/2" ID bearing on the lead screw, unless there is a bent in the lead screw or it has a piece of debris that is causing a issue.

    Unless one of these items were purchased from a 3rd party, then there might be tolerance issues from the original manufacture which might cause this issue.
    If possible please send photos to customerservice@buildyourcnc.com

    Click the link to respond:
    I am having a significant amount of trouble getting the 1/2" ID bearing to fit over the 1/2" 5 start lead screw. I can only get it about half an inch onto the rod. Any tips to get it to slide further?

Get Help with:
This Product
Orders
Tech Support
Sales
This Product
Order Query
Tech Support
Sales
Not logged in. Log In Register
Track Order(s)
View Order(s)
I Want to Schecule a One-On-One Paid Tech Support Session
Book an Appointment Pertaining to a BuildYourCNC Product (Free)
Ask a Quesion Below (Free):
Book an Appointment Pertaining Other Equipment ($60/half hour)
Book an Immedite Appointment Pertaining Other Equipment ($120/half hour)
Ask a Quesion Below (Free):
Waiting for response... I may not answer immediately, but I was notified on my cellular phone so my response is forthcoming. If I don't respond immediately, you can always go to the [My Account] page to see all of our chats at any time.