Bearing Definition and 185 Threads

Homework Statement Find the final velocity of a 5g steel ball bearing being pulled by a neodymium magnet with a pull force of 6.1 pounds (27.1 Newtons) in a straight line on a frictionless surface after being pulled for .1 meters Homework Equations F=MA The Attempt at a Solution f=ma...

I'm new in design and I'm designing a plastic piece where I want to fit a ball bearing. The outer diameter of the ball bearing is 10 mm. If I want to fit it in the plastic. What measure I've to use in the plastic hole? 11 mm?

I am having trouble finding the difference between and I beam Trolley with a roller bearing and a sleeve bearing? I know that the roller bearing has 4 wheels that sit on the bottom base of the I Beam and roll back and forth but I am not sure how a sleeve bearing is different from that? Thanks

Ok I have a design project that I am working on for the University this semester. Having a bit of problems trying to figure out and issue revolving around the wind force on our savonius blades. We are trying to make sure our blades will rotate with a wind speed of 10 mph. We have the blade total...

The two light pulleys are fastened together and form an integral unit. They are prevented from turning about their bearing at O by a cable wound securely around the smaller pulley and fastened to point A. Calculate the magnitude R of the force supported by the bearing O for the applied 3.5-kN...

hello there ... i am in the middle of stress-strain calculation..and got stuck-up at bearing/contact stresses how to calculate bearing stresses in two flat plate...? most of the engineering books has mentioned about bearing stresses/contact stresses between two circular bodies and which...

If AB has a bearing of following 97° 49' 45" and a anti-clockwise angle from A to C is measured as 71° 6' 12". Calculate the bearing AC (enter as numeric value of ddd.mmss e.g. 100° 20' 30" would be entered as 100.2030). I am very stuck here and unsure what is really being asked. Can...

I'm doing some work on my house at the moment, and have had a design produced by a structural engineer for a steel I-beam to span a newly made (4 meter) opening in a brick wall. They've given me a design (see the attached picture for my interpretation) for the bearing of the I-beam which I...

Hello, I need a small cageless, angular contact silicon nitride ball bearing (preferably deep groove) that is roughly 5 mm to 7 mm in inside diameter. This is to be used in a small model jet engine. I have been looking for hours but can't find anything. Does anyone know where I can get a...

Hey, I'm wanting to create a custom Rack and pinion set up where force is applied to the rack, turning the pinions. In order to do this what would be my best method of bearing? Can this be integrated into the design of the Rack itself? Also if the rack were to be curved what would be the...

load bearing of 2" alluminum square tubing im trying to build a load bearing beam out of 2" alluminum tubing 1/8 in walls can anyone tell me the weight a length 8feet long could bear befor bending its aa6061 T6 what would it hold befor bending? keep in mind math is not my cup of tea lol

So basically, this one question messed me up in my maths exam today. Everything we went over yesterday concerning tangent lines/derivetives I went pretty well in. The question was. There are two lookout points. A and B. There is a campirefire at a bearing of 40 degrees from A. From point B, the...

I have a list of bearings that I want to convert. The normal degrees circle is oriented with 0 to 360 going counter clockwise. I have degrees calculations that require this. I have a set of data from bearings from an aircraft where I need to convert those bearings to normal degrees bearings. As...

All, I have a latitude/longitude and I want to find another latitude/longitude given a range to the location and the bearing from the latitude and longitude I have. I have tried using the Haversine formula, which did not work for me because it is for ranges that are in hundreds of...

Homework Statement A large ball bearing is suspended as a pendulum. One end of the pendulum is held by the electromagnet (1) and the ball is initially held by magnet (2) at some height, h, above its lowest position. The ball is released from (2) and as the pendulum swings through the vertical...

Hi all! There are actual task to specialists. I have a problem. There is a platform. It made ​​of aluminum 300x400x10 mm and must moving strictly along one axis (for example X axle). The Y and Z axis of this platform should be very tightly held. We can not allow fluctuations of Y and Z...

Hello, I am trying to find a bearing that will allow a shaft to pass into a loop with 50bar of pressure. The basic schematic is the idea since this thread: The water jacket protects the bearing from high temperature as the oven will heat up the fluid to a maximum of 450dC. I assume I will...

If a 1 inch diameter steel ball bearing is at rest on a frictionless surface, what slope would be required of the surface for the ball bearing to initiate movement?

have to get up to speed on bearings building one off hubs using timken type bearings what's the correct name for the bore the backside of bearing goes into? same question for shoulder that keeps bearing from going into tube?

I wanted to use a disco ball motor to rotate an object weighing approximately 125lbs. The motor was rated for 25 lbs. Motors rated for higher weights had much higher costs, beyond what would be practical. It was suggested that using an arrangment like the one described in the attached pdf would...

For my Project, two angular contact bearings are selected to support a spindle. However, I would like to preload both the bearings considering thermla expansion.. I would like to know the max. permissible preloading limits for the bearings. Could someone suggest me some good material or links to...

Alright, the application I will be using this roller is for assisting the unloading of cargo that isn't exactly fun by hand. The load these will be handling will be around 250 - 300lbs give or take during use at the most. My first thought was to use a tapered roller bearing, but, it would...

Hi there - I built a small electronic turntable with the following components: 1- Arduino 2- Sparkfun easy stepper driver 3- Stepper motor 4- Servocity set screw hub. 5- Thrust bearing from mcmaster-carr (square turntable, found here http://www.mcmaster.com/#swivel-plates/=eltxix) 6-...

I'm building a yaw control system for one of the universitys VAWT turbines. I need to design a slewing bearing which can reliably support radial, axial and tilting moments. I have absolutely no idea how to do this or even where to start. Could you please give me some advice as to go about...

I am looking for a website or even some good ideas about the capacity of roller bearings I am especially interested in knowledge of 1. size (diameter) - larger the better 2. load capacity - large load in particular 3. known coefficient of fricition ( some tables say ~ .0012? or even...

A camshaft journal bearing was damaged due to oil starvation. after camshaft is replaced. Using a proper epoxy resin to fill in the damaged / pitted journal surface then honing the journal back to the standard size. After that adding groves or small pits that would work as oil pockets...

My regards to all I am current doing my thesis for my masters. I have completed my work, but i seemed to have taken one thing for granted. lets assume there is a Single Row, Deep Groove Ball Bearing. Here what i want to know is CAN the outer ring and inner ring move at two different...

What do "radial bearing" and "pressure bearing" mean in physics? (This is NOT a homework question) I am told that this board is supported by two bearings: Radial bearing C, and pressure bearing O. Then they write something I can't even begin to translate, it looks as though it's written in...

Hello All, I have been giving a practical assignment to calculate how terminal velocity changes as the diamter of ball bears increase. I have chosed to use stokes law http://en.wikipedia.org/wiki/Stokes%27_law to assist me with the prac. I required different sized ball bearing but must...

i have to design a journal bearing for a vertical motor shaft. what loads act on these bearings? since the shaft is axial, are they any loads that act on the bearing. here i am talking about journal/plain bearing, not the thrust bearing which supports the vertical load. what type of failure we...

Preheating was carried out on a 4140, 2 inch dia. solid shaft material prior to welding of linkage plate and bearing was attached on the shaft. Temperature range is around 400 to 450 degree celsius. Welding was performed and followed by Post heating of temperature range 560 to 570 degree celsius...

Hello, I am working on a project and I came across a question that is a little beyond my skill set. I am designing a support for a roof, and I have the force into the post, the length of the post and I need to determine what pipe I need, size, schedule diamter, etc. How do I go about this...

Hi, I wish to work out the reaction forces on the following diagram: [PLAIN]http://img227.imageshack.us/img227/7055/imag0211b.jpg The circle is a gear with tangential force acting at Ft and radial force acting at Fr. A and B are bearings that take the Ft and Fr forces. I have...

hello, i want to fix a bearing inside a pipe but not "permanently" so i can remove it and change it whenever i need. please if anyone has a method for fixing it, share it with me ?

Problem Distance: From city A to city B, a plane flies 650 miles at a bearing of N 48° E. From city B to city C, the plane flies 810 miles at a bearing of S 65° E. Find the distance from A to C and the bearing from A to C. Work so far So far I've gotten the distance from A to C already...

Hello everyone, I m working on a project that I want to create linear motion to carry a load which is constructed eccentricly as you see in the picture. I am looking for the equations about calculating the lineer bearing length and shaft diameter. In this construction, I am using two...

I was positive this is a simple uni style question, but I can't seem to work it out. I have a pneumatic cylinder that has an allowable 10N of side load acting on the end of the piston rod, at an extension of 0.1m. Now Let's say the cylinder is generating a force of P=200N. And the load it is...

Homework Statement In my physics class we shot a ball bearing horizontally 85.4cm off the ground and we recorded the distance at which it landed. How can I find the initial velocity? The average distance traveled was 250.24 cm. What if I was not provided I distance, how could I calculate...

Homework Statement Find the magnitude of the force supported by bearing B if the weight of the assemble is supported entirely by A and there is a 120 Nm couple to the shaft. The plate has mass of 15 kg. The cable from C to D prevents the plate from turning...

Homework Statement Radio direction finders are set up at points A and B, 8.68 mi apart on an east-west line. From A it is found that the bearing of a signal from a transmitter is N54.3*E, while from B it is N35.7*W. Find the distance from B, to the nearest hundredth of a mile. A person...

Does anyone know the name for a mechanical device where a ball bearing is made to go down a ramp, through loops, up and down pulleys etc, while moving on a metal rail? My first thought was a Rube Goldberg device, but I don't think that's it. Richard

Does anyone know the phi factors for overturning, sliding, and soil bearing in a small reinforced footing? If you could site the precise source too, that'd be great. I don't have access to many up to date specs and codes :/

∆Eastings + 262.575 ∆Northings + 929.573 Bearing = not an idea how to work it out Distance = Pol(∆Northing,∆Easting)= displays distance Please help, thanks!

I am familiar with the basics concept of kinetic friction (such as pushing a box on a surface), but how do you calculate the friction torque caused by a bearing for example? In my college assignment, I have been told the bearings in a winding drum have a coefficient of friction of 0.04...

I'm designing a single axis PV solar tracker. Square tubing will be the structural member of the axis. U-bolted cross members will support the solar panels. Each section of square tubing will be 10'-0" long between supports. Four cross members and four solar panels will attach to each 10'...

I have to answer a question which states: "a ship sails on a bearing of 070 degrees for 120 km. Draw a diagram to show this". Does this mean 70 degrees from the horizontal, so that I would measure 070 degrees by placing my protractor down flat and level in front of me?

OK, in bearings (particularly roller) often times there will be a "spring ring" around it. The ring acts to soften the support structure for the bearing. Ring is typically a thin ring with "pads" on both the inside and outside. They are staggered such to put the thin ring into bending when load...

Dear all, I'd like to ask what are the causes for a roller bearing in a vertical pump to overheat and burn as we have got this incident in our plant and am trying to find out what can cause such a thing. Pump details: 1. Sulzer Waste Water Pump (Model No.: VCM 4X10A 2. Pump has been...

I am working on a new 45kW centrifugal water pump, which is >70C at the roller bearing pedestal. I wonder what' s causing such high temperature. The vibration measured at the bearing pedestal is indeed very small. The pump seems to be well balanced and lubricated.

Hi All On the following picture http://img.photobucket.com/albums/v309/Andreii/ujj.jpg" , I have the tolerance Diameter 55 k5. Of course there is a big difference between k5 and K5 but that has nothing to do with my post. I would like to know why is exsactly this tolerance there? Why not, for...