That way of making the thread of the bolt (Rolled vs Cut Thread Bolts) is, in our opinion, the best way to do it for an anchor bolt that will be used for heavy machinery application. It is also a GMRC recommendation.
Portland Bolt, can I please use a section of your rolled bolt video to add to a video I am making about bolts, as they relate to shear, ASTM, and making some proper decisions on bolts? I would share that the video source is from Portland Bolt and welcome them to visit your company if their needs aligned... Thank you for your reply.
As with any type of die, these items do wear out and need to be replaced. However, this is a difficult question for which to provide a single answer. Many factors determine the life of a set of flat roll threading dies. Contributing factors include the strength/chemistry of the steel being rolled, the diameter of the round bar, the thread lengths, the condition of the threading machine itself, and the skill of the roll threading operator. Assuming the equipment is in good condition, it is being run by an experienced operator, and we are threading bolts that are well within the capacity of the machine, we do experience good die life.
We are not sure how cutting some of the thread off of a U-bolt would affect the strength of the fastener. This is a question for a structural engineer. It certainly would not change the strength of the steel itself. A band saw is typically used to make the cut and we would recommend chamfering the ends of the U-bolt after cutting them.
@Rafael Lastra com - You are correct. Although we manufacture and galvanize here in our facility, we have another company heat treat our bolts. However, the bolts in the video do not require heat-treatment.
I work in a factory just like this one but I do cut threading all day sometimes just can't beat cut thread like when doing all thread and the part is slightly bent. LANDIS IS THE BEST!
Alex A. Davronov - Unfortunately, we do not make nuts. We manufacture externally threaded fasteners. We buy and resell nuts as accessory items that accompany the bolts we make.
Jerry, Thanks for the inquiry. We are providing this answer with limited details, and you are welcome to contact us for further discussion. Our typical response would be that we do not perform roll threading operations on customer furnished steel. First, we are restricted in our ability to only roll thread certain strengths and grades of steel. Second, the pitch diameter used for roll threading has very tight tolerances and steel that falls outside of these precise tolerances will not produce a quality thread and/or potentially damage the roll threading dies. Third, we are assuming potential liability. If we lose a few pieces during the manufacturing process, we could be on the hook for replacing very expensive parts (depending on what they are). Finally, all other work we put through our shop includes a markup on not only the labor operation, but also the steel itself. Therefore, if we are only able to profit on the labor and not the steel, it reduces the overall profitability of the part, whereas we could be using the roll threading machine time in processing orders which are more profitable due to our ability to profit on both the steel and the labor. We would be more interested in providing the complete product from steel round bar we procure ourselves. Nothing is etched in stone, and there are exceptions to every rule, so please feel free to contact us to further discuss your inquiry.
TECT Tect - Thank you for the comment. We find flat die roll threaders far from useless. As a matter of fact, we try to roll thread as many orders as possible. Compared to cut threaders, they are extremely fast and efficient as a method of threading construction fasteners. Since we use a pitch diameter steel to manufacture bolts with rolled threads, in addition to reducing labor costs, they allow us to reduce steel costs, galvanizing costs, transportation costs, plating costs, and any other costs that are based on weight. Flat die roll threaders are often used in a mass-production environment, but since we are a job shop, automatic feed systems are nearly impossible to implement. We set up, tear down, and alter setups frequently from one order to the next. Although we have some runs of several thousand pieces of the same bolt, the vast majority of orders are much smaller in quantity and different in size/configuration and simply don't lend themselves to automation.
Portland Bolt Thanks for the reply. Maybe UPW thread rolling machines or UPW like machines with cylindrical dies will be more effective for your workshop.
That way of making the thread of the bolt (Rolled vs Cut Thread Bolts) is, in our opinion, the best way to do it for an anchor bolt that will be used for heavy machinery application. It is also a GMRC recommendation.
This explains thread rolling far better than the Union Pacific Steam Shop Tour. All they achieved was why rolling was better than cutting.
Thank you! We appreciate it!
Portland Bolt, can I please use a section of your rolled bolt video to add to a video I am making about bolts, as they relate to shear, ASTM, and making some proper decisions on bolts? I would share that the video source is from Portland Bolt and welcome them to visit your company if their needs aligned... Thank you for your reply.
Construction Engineering & News Events - Yes, you have our permission to use the content provided you reference the source of the video.
Awesome, will do, thank you.
Neat! Reminds me of the machine that makes ring shank nails. Do you get good life out of those dies?
As with any type of die, these items do wear out and need to be replaced. However, this is a difficult question for which to provide a single answer. Many factors determine the life of a set of flat roll threading dies. Contributing factors include the strength/chemistry of the steel being rolled, the diameter of the round bar, the thread lengths, the condition of the threading machine itself, and the skill of the roll threading operator. Assuming the equipment is in good condition, it is being run by an experienced operator, and we are threading bolts that are well within the capacity of the machine, we do experience good die life.
Excellent, very informative video - thanks a lot!!
If I have to cut some thread off a rolled threaded u bolt, does that decrease the strength of the u bolt? Is there a proper way to do it?
We are not sure how cutting some of the thread off of a U-bolt would affect the strength of the fastener. This is a question for a structural engineer. It certainly would not change the strength of the steel itself. A band saw is typically used to make the cut and we would recommend chamfering the ends of the U-bolt after cutting them.
Where do you buy the undersized rod from
Unfortunately, we do not provide vendor information. We buy from various steel mills and steel service centers throughout the country.
Я хочу купить такой станок,где вы находитесь и сколько стоит?
Excellent
Very cool. How about heat treatment for higher strength bolts? I am assuming you would send that out.
@Rafael Lastra com - You are correct. Although we manufacture and galvanize here in our facility, we have another company heat treat our bolts. However, the bolts in the video do not require heat-treatment.
Whoa! So that's why the last 5/8" foundation anchor bolts I set were less than 5/8".
Good
I work in a factory just like this one but I do cut threading all day sometimes just can't beat cut thread like when doing all thread and the part is slightly bent. LANDIS IS THE BEST!
We use Landis machines too! Landis rocks!
yes I can good this work 22 years and millons of treads in my factory my machine was the 2 dies and underplate its similar I like see this videos bye
Güzel çalışma
But how are nuts made?
Alex A. Davronov - Unfortunately, we do not make nuts. We manufacture externally threaded fasteners. We buy and resell nuts as accessory items that accompany the bolts we make.
@@pdxbolt Ok thanks!
Hà nội Việt nam xin cám ơn
If I have my own studs can you guys just roll me threads ????
Jerry, Thanks for the inquiry. We are providing this answer with limited details, and you are welcome to contact us for further discussion. Our typical response would be that we do not perform roll threading operations on customer furnished steel. First, we are restricted in our ability to only roll thread certain strengths and grades of steel. Second, the pitch diameter used for roll threading has very tight tolerances and steel that falls outside of these precise tolerances will not produce a quality thread and/or potentially damage the roll threading dies. Third, we are assuming potential liability. If we lose a few pieces during the manufacturing process, we could be on the hook for replacing very expensive parts (depending on what they are). Finally, all other work we put through our shop includes a markup on not only the labor operation, but also the steel itself. Therefore, if we are only able to profit on the labor and not the steel, it reduces the overall profitability of the part, whereas we could be using the roll threading machine time in processing orders which are more profitable due to our ability to profit on both the steel and the labor. We would be more interested in providing the complete product from steel round bar we procure ourselves. Nothing is etched in stone, and there are exceptions to every rule, so please feel free to contact us to further discuss your inquiry.
That guys jobs looks pretty monotonous
I am rolling operator and setter sir plz job
M8 सेm94 तक कर सकता हु
I'll bet those are REED roll thread dies.
Priece
It is useless machine. Where is automatic feed? Thread rolling machines with flat dies are for mass production.
TECT Tect - Thank you for the comment. We find flat die roll threaders far from useless. As a matter of fact, we try to roll thread as many orders as possible. Compared to cut threaders, they are extremely fast and efficient as a method of threading construction fasteners. Since we use a pitch diameter steel to manufacture bolts with rolled threads, in addition to reducing labor costs, they allow us to reduce steel costs, galvanizing costs, transportation costs, plating costs, and any other costs that are based on weight. Flat die roll threaders are often used in a mass-production environment, but since we are a job shop, automatic feed systems are nearly impossible to implement. We set up, tear down, and alter setups frequently from one order to the next. Although we have some runs of several thousand pieces of the same bolt, the vast majority of orders are much smaller in quantity and different in size/configuration and simply don't lend themselves to automation.
Portland Bolt Thanks for the reply. Maybe UPW thread rolling machines or UPW like machines with cylindrical dies will be more effective for your workshop.