Servo to shaft ? Answered

Hello, I would like to ask if there is a way to couple a servo motor to a shaft. Thanks.

Question by flonect   |  last reply


bearing to shaft

How would I secure a 1/4" id bearing to a 1/4"shaft? The bearing slides on very easily and is a little sloppy. I bought these from a supply co. thinking a 1/4" id bearing would fit properly on a 1/4"shaft. Any one have and ideas?

Topic by ecafighter   |  last reply



Drive Shaft To Pulley

Help! How do I attach this pulley (or any pulley) to a drive shaft? Specifically: This Motor: https://www.amazon.com/gp/product/B00O8UKN7I/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc;=1 To This Pulley: https://www.amazon.com/gp/product/B00004RAO8/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc;=1

Topic by john.walsh   |  last reply


shaft direction indicator?

Does anyone know an easy way to get/make a simple device to determine the direction of a spinning shaft?  It must give some logic (5V) signal, NOT encoded in any way.  Just +5 if CW or 0 if CCW (or backwards, or 3.3V, or whatever else, it doesn't really matter).  However, it must not A) require any digital controller (no arduino, ATtiny, PIC, computer, raspi, etc.) B) have an "encoded" output, or gray code C) have a large "dead band" where it still indicates CW but it's actually spun a tiny bit CW (or vis-versa).  Must be under 3-4 degrees D) require  the shaft to spin quickly E) be expensive.  This is a prototype for an ANALOG mill D.R.O., so I don't want to have to spend ten bucks on one part that I have to buy several of, plus the other parts.  Its a 1/4" threaded rod, but can easily be adapted to whatever else it needs to be.  The device needn't be small, and I will have a 3D printer avaliable (or at least a mill). 

Question by jduffy54   |  last reply


Hollow shafted potentiometer?

Hi everyone,  I have a project I'm working on which has two halves that are connected using a potentiometer as the axis, resulting in the two being able to twist, changing the resistance of the potentiometer.  The problem I have is that the battery is in one half and the circuit is in the other half.  I have to somehow get the power to the circuit, but still have the pieces still be able to rotate.  I can't have the wires just sticking out of the side because it has to twist, and that would look horrible.  My first thought was to drill a small hole through the shaft of the potentiometer, so that I could run the wires through that, but when I tried to do that, it turned out to be a lot harder than I expected and I now have a busted potentiometer.  I would really like to avoid slip rings of any kind, as they would be exposed to the elements.  Does anyone have any ideas, or any advice on how to drill a nice hole through a steel rod lengthwise?  Ideally I would drill the hole, but if that's too difficult, I'll try whatever. Thanks ~Dudes

Topic by dudes   |  last reply


Problem with coupling thin motor shaft! Answered

I have a thin shaft motor with shaft being barely 1.2mm thick in dia. I need to couple it with a thicker shaft which is about 3 mm thick. Please help me find a coupling solution!

Question by gangeya   |  last reply


How to find the rotating shaft rpm?

I have used AC motor of 750 rpm... motor then transmit its power to gear box then to shaft... on shaft rope drum is connected to do the required work i-e lifting or lowering of load

Question by waseemhaider.syed   |  last reply


How to attach a shaft to a rotary encoder? Answered

What are the options to attach a shaft to a rotary encoder such as this : https://www.adafruit.com/products/377 My idea is to fix a cable to around a shaft, so as to have the shaft turn when the cable is pulled, but then I want to measure the rotation. That's why I'd like to attach the end of the encoder to the end of the shaft.  Any ideas on this? I have to build the whole contraption from scratch. Thanks Mariano

Question by marianov   |  last reply


how to make a shaft power meter?

I need to measure the shaft power output of a small motor. How to do that? Most machine on the market are to measure large shaf power output, such as of a car or motorcycle engine. My power output is estimated to be about 2kW. Any suggestion would be of help to me. Thank you. Regards, Wan

Question by wanzaidi   |  last reply


Why do you need to prime vertical shaft engines and not horizontal shaft engines? Answered

I am just curious. I know some vertical shaft engines that don't need to be primed but most do.

Question by airsofter1   |  last reply


how to find torque of a rotating actuator shaft..

Am doing a project on developing a instrument helps finding the torque value of a actuators rotating shaft before fitting it to the valve ....

Question by prithiv   |  last reply


I need to attach a 3/4" shaft to a 1/4" motor shaft. Looking for a place to buy it or how to make it? Answered

I basically need to attach a motor with a 1/4" shaft to a 3/4" threaded rod. I know they make shaft couplers with set screws, but I have not seen one with that big a difference in bore DIA. I attached an image to show you what they look like.

Question by galaxyman7   |  last reply


can i change my 6 spline propellor shaft on my outboard to a 10 spline?

I have a 1978 suzuki dt25 outboard which is running a 6 spline/key way propellor shaft. since a 6 spline propellor is incredibly hard to find these days could i replace that shaft with a 10 spline shaft which is more common? cheers. william horton

Question by billbobaggens   |  last reply


How to secure metal shaft into bearing with larger ID? Answered

A question for mechanical gurus :) I'm building motorized Igus camera slider based on Kokomonstrum design. I have a shaft that's 1/4" OD that needs to go inside bearing block that has bearing with ID of 5/16". I know I need some kind of bushing, but ones I bought at McMaster don't fit bearing opening (even tho they are 5/16 OD). What are my options? Tape wrapped around shaft? Epoxy? Can't think of anything else :(

Question by bratan   |  last reply


diy shoulder axle/pin/shaft/dowel pin?

I would like to - create a shouldered pin* in order to glue gearwheels** to it - ask you for any advice or link that may hint me towards a solution any ideas are highly appreciated: i already had a look at misumi, conrad, rscomponents, alibaba, ebay, amazon "small parts" … but could not find any suitable solution. * pin's dimensions:                        left                   center                 right                   --------------=================--------------- diameter        1 mm             2.5 mm                1 mm length            2 mm             13 mm                 2 mm **made from delrin & brass. These gearwheels are spinning at a speed of ca. 4000 rounds per minute (a prototype*** worked well with superglued-gearwheels ) ***my prototype: 1mm steel wire surrounded by heat-shrinked tube

Question by marc_is_curious   |  last reply


If I attempt to weld a sprocket onto the shaft of a stepper motor will it damage the motor?

I suspect the answer is yes....anyone got any advise on how to fasten sprockets onto shafts?

Question by afridave   |  last reply


how do you repair a drimel ,shaft does not turn?

I got a used single speed drimel,when i turned it on every thing seemed fine,and when i put alittle pressure on it .it stopped spinning.i'm not sure what part connects the motor shaft to the main shaft?

Question by ziggymonz   |  last reply


Suspension Binding? Answered

I know this photo is different looking, but ignore that and look at the shaft.  It, like all other driven independent suspensions has no spline or sliding shaft to allow for movement in and out.  HOW DOES THIS NOT CRUSH THE SHAFT OR JOINTS.

Question by jj.inc   |  last reply



How to attach something to the smooth shaft of a DC toy motor? Answered

Hello I have a small DC motor and I want to attach something to it. But the problem is it has a smooth shaft. How can I attach something to it?

Question by dark32   |  last reply


How to size a DC motor? Answered

I want to rotate a stainless steel shaft that is in a vertical position having a 40 mm diameter and 300 mm length. The motor will be attached to the bottom of the shaft, so when the motor is turned, the said shaft will rotate. The shaft is not driving anything, it just turns on its own. The shaft's mass is 3kg(according to my calculations).  I want the shaft to rotate at an angular speed of 45 degrees per second. Having this information, how can i size the motor that will do the job. What kind of torque would i need, what kind of wattage. Please show me some calculations so I can know how motor sizing is correctly done.  Very much appreciated, Chris

Question by Chris414   |  last reply


How can I turn rotational motion 90 degrees?

I want to connect a horizontal, spinning shaft to a vertical shaft so that the first shaft will spin the second. Does anyone have any suggestions other than a gearbox or pulley/belt arrangement?

Question by rogers236   |  last reply


i need a knex cv shaft, who can figure one out???

Okay for you knex ppl i need to figure out a way to make a cv shaft for knex, i got 4wd already i just want stearing now, i can post pics and stuff if someone can make the cv shaft?? :D :D

Question by aaronj   |  last reply


How does one replace cuisinart motor shaft sheath?

I was given a friend's grandmother's  dlc-7 Cuisinart.  The old sheath has the upper half of the side without metal underneath broken off. The plastic is super brittle.  I've gotten a replacement part.  It looks as though the old one should slide off and the new one slide on.  It's not working out that way. We've cleaned off the corrosion on the shaft that's exposed and cleaned up the plastic with paint thinner.  Pulling on the sheath hasn't  worked.  I've considered super gluing the broken piece back on, but would really like to install the new sheath.

Question by mole1   |  last reply


What to use as a pivot? eyelet, hollow shaft, hollow nut & bolt? Help

I am looking for a permanent way to hold together a leg between 2 plastic pieces. I want the shaft that goes in the hole to be hollow, cause i plan to pass something through it. I have attached an image with the dimensions. The leg (center) is aluminum and the plastic parts on either side are delrin. I was thinking of eyelets, a shaft or a hollow nut and bolt with thread fastner, but I think all will have to be custom made. I want the fastner that holds the leg and the plastic together to also help in restrictive rotation so that alittle force is required to rotated the leg about the hollow pivot point (the shaft). Does anyone have any ideas of how i can do this or any better methid? Thanks for all your help in advance.

Topic by MickeyT1   |  last reply


Good Way to get open-cell foam and headless golf shafts.?

I'm just looking for a cheap (preferably free) way to get open-cell foam and/or headless golf shafts.

Question by    |  last reply


How do you attach the stepper motor shaft to the rotor axle?

I have two small stepper motors from a dot matrix printer that was being thrown away.  I have a wind mill ready to go but cannot figure a way to attach my 3/8 rod to the stepper motor shaft.  Any suggestions?

Question by karana   |  last reply


one motor shaft connected to a dynamo and dynamo power we can used to rotate that same motor? it is possible or not?why?

One 12v dc motor connected with a battery and its shaft is connected to a dynamo,by using  the dynamo power we used to charge the battery and we can able to continue the process with out charging the battery using external power?why?

Question by akhilbhaskaran   |  last reply


How can I make 2 wheels on the same shaft counter rotate?

Hi, I'm looking to take 2 wheels of the same size, placed next to each other on a shaft, and gear them in such a way that they rotate in opposite directions but at the same speed. Any gearing that takes place has to happen right in the center. Does anyone have any ideas as to how to accomplish this in the most efficient way?

Question by gravityisweak   |  last reply


Potentiometer knob collet work??

I have a 6.35mm smooth shaft Potentiometer and looking for a knob to go onto it. I've seen the set/grub screw type, i get how they work but worried about slipping. Also seen the collet type but not to sure how they clench down on the shaft. The shaft isn't threaded, as just a groove running along the top of it. Would it work like a conventional collet from say a dremmel tool?   

Topic by JonathanM221   |  last reply


i need help about a small mechanism?

Http://i1084.photobucket.com/albums/j417/gada888/needle.jpg I want to design a electromechanical mechanism which is potable and cell powered,a sensor mounted on a tiny plastic circle and the thing is  attached to a shaft end.when started the shaft is slowly thrusting until the sensor on the shaft end is touched human skin the sensor send signal back to a microchip,the chip halt  the thrusting shaft in case it squeeze the skin hard,  next the  NEEDLES around the sensor begin to work, they piercing through the skin then quickly spring out in case they cause much pain to people. question 1:how to design the shaft thrusting mechanism? question 2:is about the needles,how to pull them back quickly? question 3:can it be wireless controlled? pls help,any of ur suggestion would be greatly appreciated.  

Question by gada888   |  last reply


Old Dunlap Model 103-0602 wood lathe Answered

Hi, I have an old Dunlap Model 103-0602 wood lathe. It has step pulleys to adjust the speed. One pulley is on the lathe head and turns the center shaft. The other pulley is on the shaft of the motor. The motor is 1/3 HP ,  1725 rpm's and has a 5/8 shaft. The pulley on the motor shaft is       4", 3 1/4",  2 1/2" and 1 3/4 " .  I am having trouble measuring around the pulley on the head of the lathe are they usually the same size? Well can anyone help me? Thanks Frank

Question by tall1smokey   |  last reply


Attaching a Spur Gear onto a Motor

I want to attach a spur gear with a bore diameter of 6mm onto the shaft of this motor (6mm diameter shaft). How would I go about doing this? From what I see, the shaft is smooth so is my only option to find a gear with a set screw? Or is it sufficient to attach a gear with no set screw and simply rely on the friction of the bore? The torques will be low. Are there any websites that one would recommend for finding gears like this? I'm finding it impossible to find gears with a module of 1.0, bore diam. of 6mm, 12 teeth, and a thickness of less than 20mm to fit onto the shaft.Any help would be greatly appreciated.

Question by Pndlm 


What is this red sleeve called in the attached picture of an impeller blade?

Obviously the center red sleeve is for adjustment over minor difference in the shaft diameter.  Can you please tell me the technical term used for the red piece? Thanks.

Topic by kabira   |  last reply


Friction drive weedeater bike?

I am wanting to make a weed eater bike and I am having trouble figuring out how to get the bike peg onto the clutch shaft. Can I just thread the clutch shaft with a tap and die set (which I don't have). Would it work if I put the clutch shaft against the wheel instead of putting a peg on it? Also, how hard is it to mount the engine with angle iron since I don't have a welder?

Question by chiefs543   |  last reply


I need a ratchet mechanism for a 1/4in square spindle. not a clue where to get one. any help? thanks.?

I'm looking to turn a 1/4 in square ended spindle with a shaft which contains a ratchet mechanism. The ratchet mechanism will be contained in a shaft at 90 degrees to the spindle so as to allow a turning of the spindle through a fraction of a revolution before returning to start. The ratchet shaft would be permanently and securely fixed (bolted?) to the spindle and allow a reasonable amount of torque.

Question by Phil11   |  last reply


I HAVE PROBLEM ASSOCIATED WITH ROLLER MISSING OF REVERSE GEAR BEARING WHILE ASSEMBLY WITH SHAFT IN TRANX-AXLE?

WHILE ASSEMBLY OF COUNTER SHAFT AND INPUT SHAFT REVERSE GEAR BEARING IS USED.BUT IN SOME CASES FOUND THAT ROLLER IN REVERSE GEAR BEARING IS MISSING. AND IT IS ASSEMBLED AS IT IS. I WABT TO DESIGN SOME POKA YOKE SUCH THAT BEARING CAN NOT BE PLACED IF ONE OF THE ROLLER IS NOT PRESENT. OR SOME POKA YOKE TO CHECK THE BEARING BEFOUR ASSEMBLY AND IT SHOULD CHECK ALL THE ROLLER AND IF ONE OR MORE ROLLER IS NOT PRESENT IT WILL SHOW SOME INDICATION OR ALARM.

Question by ADITYA1991   |  last reply


Friction Drive Weed Eater Bike?

I am wanting to make a weed eater bike and I am having trouble figuring out how to get the bike peg onto the clutch shaft. Can I just thread the clutch shaft with a tap and die set (which I don't have). Would it work if I put the clutch shaft against the wheel instead of putting a peg on it? Also, how hard is it to mount the engine with angle iron since I don't have a welder?

Question by chiefs543   |  last reply


Looking for project parts

I need to attach an arm to the end of a stepper motor shaft that I will then use to rock a babies car seat. Finding an arm (or horn) is turning out to be more difficult than I thought. Does anyone know a place to pick up stuff like that. The shaft is 5mm Thanks

Topic by dlouche   |  last reply


Help on attaching threaded rod to motor

Hello all quick question for you: what is the best way to attach a threaded rod to a motor shaft. This would be similar to a CNC setup. I know you could use a dual shaft collar but I was wondering if there's perhaps a simpler solution?

Topic by Patrick S   |  last reply



Creative or practical uses for my newly purchased Dremel 300 with flexi-shaft.?

I have made an ashtray out of beer cans, wooden plaques, installed a look on my door and removed fiberglass with it but am at a sort of creative wall.

Question by djperson   |  last reply


Mendocino Motor ! How to correctly wired solar cells to shaft coil wire?

Trying to wired " Mendocino Motor" using 4 mini solar cells to magnetic wire.  Like the 1 here : http://www.youtube.com/watch?v=bu6xf3pyMQI Thanks!

Question by ezerbino 


Can I use a deep fat fryer to heat bearings to fit to a shaft?

This deep fat fryer will heat to 400deg. Do I use a veg oil,   or  compressor oil   .... someone told me this once, I don't know what oil to use that won't burn easily. A one time job  just don't want to buy a bearing heater  These bearings are 3" OD and go in a large compressor doing a rebuild on the low cost mode...

Question by anvil_man   |  last reply


How to make a Worm/compost separater/shaker with a straight shaft electric motor? Answered

I raise composting nightcrawlers for fishing bait and worm castings.  I need to make a simple shaking machine with 3 different sizes of screens.  The first screen with keep all of the larger pieces of dirt and twigs from the compost and a few of the larger worms.    The second screen of a smaller mesh will keep most of the worms and a little of the unfinished compost.  The third and final screen will let through only the worm castings and the worm cocoons.  This machine should hold at least a five gallon bucket of compost at a time and the worms have already turned any large particles of garbage; leaves; dirt etc into small parts, but picking these worms out a few at a time is a very time consuming process and I have a lot of 50 gallon barrells to go through.

Question by zimginny   |  last reply


Wen 2307 Rotary Tool - Help needed

Hi there everyone, I need a bit of help if available. I purchased a WEN 2307 101-piece rotary tool set from Amazon.ca a few weeks ago and followed that purchase with a Flexible Drive shaft.  Although I was able to attach the drive shaft to the tool, the bits that came with the WEN don't seem to fit the collet of the drive shaft properly.  Therefore, I am planning on returning the drive shaft and purchasing a different unit from a different supplier on Amazon. The unit that I am considering is an SPTA Electric Grinder Flexible Flex Shaft Rotary Tool Attachment 42" Length and Rotary Accessory which states that it fits All 1/8" rotary tools. Of course, the drive shaft didn't come with a manual, so I figured out myself how it is supposed to attach. I'm not very familiar with rotary tools and purchased this unit as a beginner, instead of spending a lot of money on a really good Dremel. That being said, I would like to know if the size of the collet is equal to the same size bit.  (i.e., if the rotary tool is fitted with a 1/8" collet, do you use 1/8" bits, or do you use a different size? I know that this seems like such a stupid and/or easy question to most people, but, being a beginner, this can be quite confusing. Any assistance that you can offer will be greatly appreciated. Thanks

Topic by freddyguy1   |  last reply


Wrapping wood in carbon fibre.

Hi, After cutting my own wooden lacrosse shaft using the tutorial on Instructables, it snapped within half an hour of use. Now I know this was because the grain was pretty poor and it was not a strong wood, but someone suggested that I wrap a shaft in carbon fiber so that it is slightly stronger, limits horizontal movement and reduces denting. I just have a few questions about trying this; Would this carbon fiber be appropriate for the project. http://compositeenvisions.com/raw-fabric-cloth-2/carbon-fiber-97/carbon-fiber-fabric-plain-weave-3k-5-7oz-tape-605.html if not where should I look? The biggest problem I see is somehow packing the carbon tight around the shaft so there are no bubbles and it is consistently straight all the way down the shaft, there is a vacuum packing basics tutorial on instructables but I'm not sure if you could use that for a lacrosse shaft. Instead of making my own bag as per tutorial would just a plain bag (http://compositeenvisions.com/vacuum-infusion-equipment-71/nylon-vacuum-bagging-film-500.html) be fine then clamp off the unneeded extra, although are those bags re usable? Because I don't want to have to pay $5 USD every time I would like to wrap something. I saw something called bleeder cloth as well, would this be needed to stop excess resin sticking to the shaft? When it comes to the carbon, I know someone who sails a lot and has some experience with carbon fiber but none with vacuum packing who said I should lay it up like the image attached to decrease horizontal movement while allowing vertical flex. Would this have the desired affect as if this is successful I plan to make a ton more for a high school team I help coach. I've attached a image to give you some idea of what I'm talking about. Then for the actual laying of the carbon itself, a shaft is not a flat surface so you can't just pour it on like the Youtube video's I've found. I'm not sure how to pull this off. Then afterwards, is there a simple way to test the properties of the shaft; specifically flex and impact strength. Because even if I don't end up wrapping the shafts I still need to test the wood to compare it to alloy. Sorry about the small essay, but I would really like to give this a good shot. Because shipping shafts from the states is quite expensive, being able to make my own and then put graphics on them would be amazing.

Topic by Thatkiwiguy   |  last reply


Does any one know how to couple a fine thread 6mm bolt to a non-metric one of approximately the same diameter?

I am trying to construct a bike powered blender and need to build a new drive shaft for it. I have plenty of threaded rod to use for the drive shaft, however it is all English and the head of the drive shaft, the piece that locks into the base of the blender and spins the blade, is threaded to fit a 6mm fine thread bolt, of which I've found a short one, but what I really really!! need to be able to do is connect the threaded metric bolt to an English threaded rod. Thanks

Question by swupuws   |  last reply


Magnetic Field for hollow core?

I am working on a project in which I have to control a small setup at the end of a motor shaft using an electromagnet. The electromagnet needs to be around the shaft inbetween the setup and the motor. So I have used a metallic ferromagnetic spool(image attached) and wound 32 gauge wire on it to make it an electromagnet and put the shaft through it. Since this core made out of spool is hollow, I'm not sure how the magnetic field will behave. I tried powering up the one I made and it' seems to be both attracting and repelling a magnet's pole (edges attract while centre somewhat repels). Anyone got any idea about this?

Topic by Antzy Carmasaic   |  last reply