Friday, April 30, 2010

A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. www.vardhmanbearings.com


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A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as well as by the directions of applied loads they can handle
Overview
Plain bearings use surfaces in rubbing contact, often with a lubricant such as oil or graphite. A plain bearing may or may not be a discrete device. It may be nothing more than the bearing surface of a hole with a shaft passing through it, or of a planar surface that bears another (in these cases, not a discrete device); or it may be a layer of bearing metal either fused to the substrate (semi-discrete) or in the form of a separable sleeve (discrete). With suitable lubrication, plain bearings often give entirely acceptable accuracy, life, and friction at minimal cost. Therefore, they are very widely used.
However, there are many applications where a more suitable bearing can improve efficiency, accuracy, service intervals, reliability, speed of operation, size, weight, and costs of purchasing and operating machinery.
Thus, there are many types of bearings, with varying shape, material, lubrication, principal of operation, and so on. For example, rolling-element bearings use spheres or drums rolling between the parts to reduce friction; reduced friction allows tighter tolerances and thus higher precision than a plain bearing, and reduced wear extends the time over which the machine stays accurate. Plain bearings are commonly made of varying types of metal or plastic depending on the load, how corrosive or dirty is the environment, and so on. In addition, bearing friction and life may be altered dramatically by the type and application of lubricants. For example, a lubricant may improve bearing friction and life, but for food processing a bearing may be lubricated by an inferior food-safe lubricant to avoid food contamination; in other situations a bearing may be run without lubricant because continuous lubrication is not feasible, and lubricants attract dirt that damages the bearings.
Principles of operation

Animation of ball bearing
There are at least six common principles of operation:
plain bearing, also known by the specific styles: bushings, journal bearings, sleeve bearings, rifle bearings
rolling-element bearings such as ball bearings and roller bearings
jewel bearings, in which the load is carried by rolling the axle slightly off-center
fluid bearings, in which the load is carried by a gas or liquid
magnetic bearings, in which the load is carried by a magnetic field
flexure bearings, in which the motion is supported by a load element which bends.
[edit] Motions
Common motions permitted by bearings are:
Axial rotation e.g. shaft rotation
Linear motion e.g. drawer
spherical rotation e.g. ball and socket joint
hinge motion e.g. door, elbow, knee
[edit] Friction
Reducing friction in bearings is often important for efficiency, to reduce wear and to facilitate extended use at high speeds and to avoid overheating and premature failure of the bearing. Essentially, a bearing can reduce friction by virtue of its shape, by its material, or by introducing and containing a fluid between surfaces or by separating the surfaces with an electromagnetic field.
By shape, gains advantage usually by using spheres or rollers, or by forming flexure bearings.
By material, exploits the nature of the bearing material used. (An example would be using plastics that have low surface friction.)
By fluid, exploits the low viscosity of a layer of fluid, such as a lubricant or as a pressurized medium to keep the two solid parts from touching, or by reducing the normal force between them.
By fields, exploits electromagnetic fields, such as magnetic fields, to keep solid parts from touching.
Combinations of these can even be employed within the same bearing. An example of this is where the cage is made of plastic, and it separates the rollers/balls, which reduce friction by their shape and finish.
[edit] Loads

A block bearing with provisions for fixing it
Bearings vary greatly over the size and directions of forces that they can support.
Forces can be predominately radial, axial (thrust bearings) or Bending moments perpendicular to the main axis.
[edit] Speeds
Different bearing types have different operating speed limits. Speed is typically specified as maximum relative surface speeds, often specified ft/s or m/s. Rotational bearings typically describe performance in terms of the product DN where D is the diameter (often in mm) of the bearing and N is the rotation rate in revolutions per minute.
Generally there is considerable speed range overlap between bearing types. Plain bearings typically handle only lower speeds, rolling element bearings are faster, followed by fluid bearings and finally magnetic bearings which are limited ultimately by centripetal force overcoming material strength.
[edit] Play
Some applications apply bearing loads from varying directions and accept only limited play or "slop" as the applied load changes. One source of motion is gaps or "play" in the bearing. For example, a 10 mm shaft in a 12 mm hole has 2 mm play.
Allowable play varies greatly depending on the use. As example, a wheelbarrow wheel supports radial and axial loads. Axial loads may be hundreds of newtons force left or right, and it is typically acceptable for the wheel to wobble by as much as 10 mm under the varying load. In contrast, a lathe may position a cutting tool to ±0.02 mm using a ball lead screw held by rotating bearings. The bearings support axial loads of thousands of newtons in either direction, and must hold the ball lead screw to ±0.002 mm across that range of loads.
[edit] Stiffness
A second source of motion is elasticity in the bearing itself. For example, the balls in a ball bearing are like stiff rubber, and under load deform from round to a slightly flattened shape. The race is also elastic and develops a slight dent where the ball presses on it.
The stiffness of a bearing is how the distance between the parts which are separated by the bearing varies with applied load. With rolling element bearings this is due to the strain of the ball and race. With fluid bearings it is due to how the pressure of the fluid varies with the gap (when correctly loaded fluid bearings are typically stiffer than rolling element bearings).
[edit] Life
Fluid and magnetic bearings can potentially give indefinite life. In practice, there are fluid bearings supporting high loads in hydroelectric plants that have been in nearly continuous service since about 1900 and which show no signs of wear.
Rolling element bearing life is determined by load, temperature, maintenance, lubrication, material defects, contamination, handling, installation and other factors. These factors can all have a significant effect on bearing life. For example, the service life of bearings in one application was extended dramatically by changing how the bearings were stored before installation and use, as vibrations during storage caused lubricant failure even when the only load on the bearing was its own weight.[1] Bearing life is statistical: several samples of a given bearing will often exhibit a bell curve of service life, with a few samples showing significantly better or worse life. Bearing life varies because microscopic structure and contamination vary greatly even where macroscopically they seem identical.
For plain bearings some materials give much longer life than others. Some of the John Harrison clocks still operate after hundreds of years because of the lignum vitae wood employed in their construction, whereas his metal clocks are seldom run due to potential wear.
Flexure bearings bend a piece of material repeatedly. Some materials fail after repeated bending, even at low loads, but careful material selection and bearing design can make flexure bearing life indefinite.
Although long bearing life is often desirable, it is sometimes not necessary. Harris describes a bearing for a rocket motor oxygen pump that gave several hours life, far in excess of the several tens of minutes life needed.[1]
[edit] Maintenance
Many bearings require periodic maintenance to prevent premature failure, although some such as fluid or magnetic bearings may require little maintenance.
Most bearings in high cycle operations need periodic lubrication and cleaning, and may require adjustment to minimise the effects of wear.
Bearing life is often much better when the bearing is kept clean and well-lubricated. However, many applications make good maintenance difficult. For example bearings in the conveyor of a rock crusher are exposed continually to hard abrasive particles. Cleaning is of little use because cleaning is expensive, yet the bearing is contaminated again as soon as the conveyor resumes operation. Thus, a good maintenance program might lubricate the bearings frequently but clean them never.
[edit] History

Tapered bearings

Early Timken tapered roller bearing with notched rollers
The oldest instance of the bearing principle dates to the Egyptians when they used tree trunks under sleds.[2] There are also Egyptian drawings of bearings used with hand drills.[3]
The earliest recovered example of a bearing is a wooden ball bearing supporting a rotating table from the remains of the Roman Nemi ships in Lake Nemi, Italy. The wrecks were dated to 40 AD.[4][5]
Leonardo da Vinci is often credited with drawing the first roller bearing around the year 1500. However, Agostino Ramelli is the first to have published sketches of roller and thrust bearings.[2] An issue with ball bearings is the balls rub against each other, causing additional friction, but rubbing can be prevented by enclosing the balls in a cage. The captured, or caged, ball bearing was originally described by Galileo in the 1600s. The mounting of bearings into a set was not accomplished for many years after that. The first patent for a ball race was by Philip Vaughan of Carmarthen in 1794.
Bearings saw use for holding wheel and axles. The bearings used there were plain bearings that were used to greatly reduce friction over that of dragging an object by making the friction act over a shorter distance as the wheel turned.
The first plain and rolling-element bearings were wood, but ceramic, sapphire, or glass were also used, and steel, bronze, other metals, ceramics, and plastic (e.g., nylon, polyoxymethylene, polytetrafluoroethylene, and UHMWPE) are all common today. A "jeweled" pocket watch uses stones to reduce friction, and allow more precise time keeping. Even old materials can have good durability. As examples, wood bearings can still be seen today in old water mills where the water provides cooling and lubrication.
The first practical caged-roller bearing was invented in the mid-1740s by horologist John Harrison for his H3 marine timekeeper. This uses the bearing for a very limited oscillating motion but Harrison also used a similar bearing in a truly rotary application in a contemporaneous regulator clock.
Friedrich Fischer's idea from the year 1883 for milling and grinding balls of equal size and exact roundness by means of a suitable production machine formed the foundation for creation of an independent bearing industry.
A patent on ball bearings, reportedly the first, was awarded to Jules Suriray, a Parisian bicycle mechanic, on 3 August 1869. The bearings were then fitted to the winning bicycle ridden by James Moore in the world's first bicycle road race, Paris-Rouen, in November 1869.[6]
The modern, self-aligning design of ball bearing is attributed to Sven Wingquist of the SKF ball-bearing manufacturer in 1907, when he was awarded Swedish patent No. 25406 on its design.
Henry Timken, a 19th century visionary and innovator in carriage manufacturing, patented the tapered roller bearing, in 1898. The following year, he formed a company to produce his innovation. Through a century, the company grew to make bearings of all types, specialty steel and an array of related products and services.
Erich Franke invented and patented the wire race bearing in 1934. His focus was on a bearing design with a cross section as small as possible and which could be integrated into the enclosing design. After World War II he founded together with Gerhard Heydrich the company Franke & Heydrich KG (today Franke GmbH) to push the development and production of wire race bearings.
In the early 1980's, Pacific Bearing's founder, Robert Schroeder, invented the first bi-material plane bearing which was size interchangeable with linear ball bearings. This bearing had a metal shell (aluminum, steel or stainless steel) and a layer of Teflon-based material connected by a thin adhesive layer. This product is called a "Simplicity Bearing" and the Teflon-based material is known as "Frelon" or "Frelon Gold".
Today, bearings are used in a variety of applications. Ultra high speed bearings are used in dental hand pieces, aerospace bearings are used in the Mars Rover, and flexure bearings are used in optical alignment systems.
[edit] Types
There are many different types of bearings.
Type
Description
Friction
Stiffness
Speed
Life
Notes
Plain bearing
Rubbing surfaces, usually with lubricant; some bearings use pumped lubrication and behave similarly to fluid bearings.
Depends on materials and construction, PTFE has coefficient of friction ~0.05-0.35, depending upon fillers added
Good, provided wear is low, but some slack is normally present
Low to very high
Moderate (depends on lubrication)
Widely used, relatively high friction, suffers from stiction in some applications. Depending upon the application, lifetime can be higher or lower than rolling element bearings.
Rolling element bearing
Ball or rollers are used to prevent or minimise rubbing
Rolling coefficient of friction with steel can be ~0.005 (adding resistance due to seals, packed grease, preload and misalignment can increase friction to as much as 0.125)
Good, but some slack is usually present
Moderate to high (often requires cooling)
Moderate to high (depends on lubrication, often requires maintenance)
Used for higher moment loads than plain bearings with lower friction
Jewel bearing
Off-center bearing rolls in seating
Low
Low due to flexing
Low
Adequate (requires maintenance)
Mainly used in low-load, high precision work such as clocks. Jewel bearings may be very small.
Fluid bearing
Fluid is forced between two faces and held in by edge seal
Zero friction at zero speed, low
Very high
Very high (usually limited to a few hundred feet per second at/by seal)
Virtually infinite in some applications, may wear at startup/shutdown in some cases
Can fail quickly due to grit or dust or other contaminants. Maintenance free in continuous use. Can handle very large loads with low friction and negligible maintenance.
Magnetic bearings
Faces of bearing are kept separate by magnets (electromagnets or eddy currents)
Zero friction at zero speed, but constant power for levitation, eddy currents are often induced when movement occurs, but may be negligible if magnetic field is quasi-static
Low
No practical limit
Indefinite
Often needs considerable power. Maintenance free.
Flexure bearing
Material flexes to give and constrain movement
Very low
Low
Very high
Very high or low depending on materials and strain in application
Limited range of movement, no backlash, extremely smooth motion
†Stiffness is the amount that the gap varies when the load on the bearing changes, it is distinct from the friction of the bearing.
[edit] See also
Ball spline
DO VISIT ALL OUR WEBSITES FOR ALL OUR PRODUCTS
http://www.vardhmanbearings.com

http://www.arihantengineers.com

http://www.veerenterprises.com

http://www.ranjanaarts.com

thanking u
jigesh shah
for vardhman bearings
9892432411
9819824531
91-22-28627454
tel/fax: 91-22-28653894 , 28656188
email : jigesh2007@hotmail.com
vardhmanbearings@rediffmail.com


ADD US ON FOLLOWING FOR ONLINE DISCUSSION

HOTMAIL MSN : JIGESH2007@HOTMAIL.COM
YAHOO MSG : JIGESH2007@YAHOO.COM
SKYPE : JIGESH2007


Monday, April 26, 2010


vardhman bearings

http://www.vardhmanbearing.com/
we manufacture all type of universal joints , cardan shafts , propeller shafts , u joints cross joints , cardan shaft couplings , flange universal joints , drive shaft , drive shaft couplings , spline attached universal joints , telescopic universal joints , harden universal joints , universal couplings ,
A Comprehensive range of Precision Universal Joints for specific applications is available to the Indian Industry.
*
From manually operated Friction bearing joints to Bracket version for medium torque / speed characteristics & Needle bearing mounted joints for high speed applications (up to 4000 rpm)
*
Stainless Steel joints also available
*
These Joints can be machined to accommodate Bores, Keyways, Square & Hexagonal holes, as standard
*
Range covers outside diameters from 10 to 95 mm - all confirming to DIN standards. Single, double & extendable type joints are available in all 3 varieties.
* Single Joint * Double Joint * Static Breaking *
Seri. No.
B
A
BORE SIZE
C
N.m.
SERI No.
B
A
BROE SIZE
C
E
N.m.



STAN-DARD
WITH KEY WAY





STAN-DARD
WITH KEY WAY



SJ1
9.5
44
6
-
13
21
DJ1
13
71.5
8
-
15
21.5
44
SJ2
13
50
8
-
15
44
DJ2
16
81
10
7.5
16
25
75
SJ3
16
58
10
7.5
17
75
DJ3
19
91
12
8.5
19
27
89
SJ4
19
64
12
8.5
19
89
DJ4
22.5
111
14
11
21
35
135
SJ5
22.5
76
14
11
21
135
DJ5
25.5
122
16
12
25
36
193
SJ6
25.5
86
16
12
25
193
DJ6
29
133
18
14
26
43
331
SJ7
29
90
18
14
26
331
DJ7
32
143
20/22
16
26.5
48
600
SJ8
32
95
20/22
16
26.5
600
DJ8
38.5
162
25
19
30
54
910
SJ9
38.5
108
25
19
30
910
DJ9
44.5
194
30
22.5
34.5
67
1230
SJ10
44.5
127
30
22.5
34.5
1230
DJ10
51
218
35
27.5
38
78
1790
SJ11
51
140
35
27.5
38
1790
DJ11
57.5
245
40
32
47.5
80
2850
SJ12
57.5
165
40
32
47.5
2860
DJ12
63.5
267
45
36.5
50
89
3810
SJ13
63.5
178
45
36.5
50
3810
DJ13
76.5
318
50
44.5
56
96
7510
SJ14
76.5
222
50
44.5
66
7510
DJ14
89
365
65
53
78
111
11010
SJ15
89
254
65
53
78.5
111010
DJ15
102
410
70
62
94
118
15850
SJ16
102
292
70
62
94
15850
-
-
-
-
-
-
-
-
All Dimensions in mm
Introduction : OKI Universal Joints provide a simple & economic method of connecting two shafts whose axes are inclined at an angle. They are also used when the angle varies during rotation eliminating the need for the complicated & expensive mechanisms usually associated with this type of application.
Lubrication : For both intermittent & continuously rated joints where constant lubrication (such as an oil bath) is not available joint covers for grease packing are recommended.
We introduce our self as manufacturer of all type of universal joints
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We manufacturer all type of universal joints , hook type universal joint , pin type universal joint , ball type universal joint , needle bearing type universal joint , universal joint with needle bearing , telescopic universal joint , harden universal joint , universal joint with spline attachment , universal joint with square bore , universal joint hex bore , universal joint keyway , as per customer requirement , universal joint for high speed , universal joint for high rpm , heavy duty universal joint , light duty universal joint , plastic universal joint , stainless steel universal joint , ss universal joint , stainless steel universal joint , flexible universal joint , cardon shaft universal joint , pin type universal joint , welded universal joint , double universal joint , double universal joint with spline , single universal joint ,


U joint, Cardan joint, Hardy-Spicer joint, or Hooke's joint is a joint in a rigid rod that allows the rod to 'bend' in any direction, and is commonly used in shafts that transmit rotary motion. It consists of a pair of hinges located close together, oriented at 90° relative to each other, connected by a cross shaft.These Universal joint are manily used in automobile , textile , machines , weaving machines , packing machines , spm , filling machines , looms , steering , mills , milling machines , automatic machines , box making machines , construction machines , mining machines , drilling machines , multi spindle drilling machines , rubber machines , packing machines , printing machines , machines , welding machines , cnc machines , cnc lathe , cnc drilling machines , plastic machines , injection machines , laboratory equipments , chemical plants , heavy industry , construction machines , cement plants , cement filling palnts , bottling plants , hydraulic machine , pneumatic machine , rolling mills , robots , cars , assembling machines , material handling machines , steering machines , fixing machines , ATM , fax machines , reactors , trackters , trackter , truck , bulldozer , road macking machines , road marking machines , drilling machines , concert mixing machines , mixtures , rotary machines , spm , agricultural machines , farming machines , poultry machines , automatic machines , gaming machines , gambling machines , building machines , weaving machines , welding machines , weighting machines , weighing machines , grinding machines , switchgear , wire machines , r and d machines , laboratory machines , hardening machines , furnaces , looms , rotary machines , propeller machines , air crafts , marking machines , vending machines , washing machines , virtual machines , crazy machines , complex machines , yard machine , lfiting machines , cranes , slot machines , marking machines , broaching machines , casting machines , forging machines , cigarette making machines , candy making machines , block making machine , soda machines , fog machines , sewing machine ,

Universal joint
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A universal joint
A universal joint, U joint, Cardan joint, Hardy-Spicer joint, or Hooke's joint is a joint in a rigid rod that allows the rod to 'bend' in any direction, and is commonly used in shafts that transmit rotary motion. It consists of a pair of hinges located close together, oriented at 90° to each other, connected by a cross shaft.
Contents[hide]
1 History
2 Equation of motion
3 Double Cardan Shaft
4 Double Cardan Joint
5 Thompson Coupling
6 See also
7 References
8 External links
//
[edit] History
The main concept of the universal joint is based on the design of gimbals, which have been in use since antiquity. One anticipation of the universal joint was its use by the Ancient Greeks on ballistae. The first person known to have suggested its use for transmitting motive power was Gerolamo Cardano, an Italian mathematician, in 1545, although it is unclear whether he produced a working model. Christopher Polhem later reinvented it and it was called "Polhem knot". In Europe, the device is often called the Cardan joint or Cardan shaft. Robert Hooke produced a working universal joint in 1676, giving rise to an alternative name, the Hooke's joint. Though the first use of the name universal joint is sometimes attributed to American car manufacturer Henry Ford, the term appeared in patent documents as early as 1884 when Charles H. Amidon was awarded United States Letters Patent No. 298,542 for a bit brace.
[edit] Equation of motion

Diagram of variables for the universal joint. Axle 1 is perpendicular to the red plane and axle 2 is perpendicular to the blue plane at all times. These planes are at an angle β with respect to each other. The angular displacement (rotational position) of each axle is given by γ1 and γ2 respectively, which are the angles of the unit vectors and with respect to their initial positions along the x and y axes. The and vectors are fixed by the gimbal connecting the two axles and so are constrained to remain perpendicular to each other at all times.
The Cardan joint suffers from one major problem: even when the drive shaft axle rotates at a constant speed, the driven shaft axle rotates at a variable speed, thus causing vibration and wear. The variation in the speed of the driven shaft depends on the configuration of the joint, which is specified by three variables:
γ1 The angle of rotation for axle 1
γ2 The angle of rotation for axle 2
β The bend angle of the joint, or angle of the axles with respect to each other, with zero being parallel or straight through.
These variables are illustrated in the diagram on the right. Also shown are a set of fixed coordinate axes with unit vectors and and the planes of rotation of each axle. These planes of rotation are perpendicular to the axes of rotation and do not move as the axles rotate. The two axles are joined by a gimbal which is not shown. However, axle 1 attaches to the gimbal at the red points on the red plane of rotation in the diagram, and axle 2 attaches at the blue points on the blue plane. Coordinate systems fixed with respect to the rotating axles are defined as having their x-axis unit vectors ( and ) pointing from the origin towards one of the connection points. As shown in the diagram, is at angle γ1 with respect to its beginning position along the x axis and is at angle γ2 with respect to its beginning position along the y axis.
is confined to the "red plane" in the diagram and is related to γ1 by:

is confined to the "blue plane" in the diagram and is the result of the unit vector on the x axis being rotated through Euler angles ]:

A constraint on the and vectors is that since they are fixed in the gimbal, they must remain at right angles to each other:

Thus the equation of motion relating the two angular positions is given by:

The angles γ1 and γ2 in a rotating joint will be functions of time. Differentiating the equation of motion with respect to time and using the equation of motion itself to eliminate a variable yields the relationship between the angular velocities ω1 = dγ1 / dt and ω2 = dγ2 / dt:


Angular (rotational) output shaft speed versus rotation angle for different bend angles of the joint
Output shaft rotation angle, , versus input shaft rotation angle, , for different bend angles, , of the joint

As shown in the plots, the angular velocities are not linearly related, but rather are periodic with a period twice that of the rotating shafts. The angular velocity equation can again be differentiated to get the relation between the angular accelerations a1 and a2:

[edit] Double Cardan Shaft

Universal joints in a driveshaft
A configuration known as a double Cardan joint drive shaft partially overcomes the problem of jerky rotation. This configuration uses two U-joints joined by an intermediate shaft, with the second U-joint phased in relation to the first U-joint to cancel the changing angular velocity. In this configuration, the assembly will result in an almost constant velocity, provided both the driving and the driven shaft are parallel and the two universal joints are correctly aligned with each other - usually 90°. This assembly is commonly employed in rear wheel drive vehicles, where it is known as a drive shaft or propeller (prop) shaft.
Even when the driving and driven shafts are parallel, if " src="http://upload.wikimedia.org/math/a/d/c/adc5b8748d05ed786452edf96c06ce57.png"> 0°, oscillating moments are applied to the three shafts as they rotate. These tend to bend them in a direction perpendicular to the common plane of the shafts. This applies forces to the support bearings and can cause "launch shudder" in rear wheel drive vehicles.[1] The intermediate shaft will also maintain a sinusoidal angular velocity, which contributes to vibration and stresses.
[edit] Double Cardan Joint
Main article: Constant-velocity joint#Double Cardan
A double cardan joint consists of two universal joints mounted back to back, with no intermediate shaft. The second UJ cancels the velocity errors introduced by the single joint, and so they act as a CV joint.
[edit] Thompson Coupling
Main article: Constant-velocity joint#Thompson coupling
A Thompson Coupling is a refined version of the double Cardan joint. It offers slightly increased efficiency with the penalty of some increase in complexity.
[edit] See also
Cardan shaft
Constant-velocity joint
Elastic coupling
Gear coupling
Rag joint
[edit] References
Theory of Machines 3 from National University of Ireland
^ Electronically-controlled adjustable height bearing support bracket - US Patent 6345680
[edit] External links
[1] by Sándor Kabai, Wolfram Demonstrations Project.
DIY: Replacing ABC Television - The New Inventors - broadcast Feb 2007
U.S. Patent 7,144,326 - Constant velocity coupling
Video on Youtube: http://www.youtube.com/watch?v=xgQgm3GwaFs
Video on Youtube: http://www.youtube.com/watch?v=Dh5C4e4exhM
Retrieved from "http://en.wikipedia.org/wiki/Universal_joint"
Categories: Kinematics Mechanisms Automotive transmission technologies

Saturday, April 10, 2010







UNIVERSAL COUPLING , UNIVERSAL JOINT , U JOINT , CARDAN SHAFT , PROPELLER SHAFT , CROSS JOINT , TELESCOPIC UNIVERSAL JOINT , DRIVEN SHAFT ,

We at VARDHMAN BEARINGS are manufacturers and exporters of universal joint and driven shafts


We make all sizes and types in universal joints

These universal joints are also know as u – joint , universal joint , cardan shafts , small cardan shafts , propeller shafts , cross joint , driven shaft , drive shaft , axial shaft , u shaft , angle shaft , ujoint , universal coupling , u joint coupling , cardon shaft , cardan coupling , cardan shaft , driven cardan shaft , universal coupling , love joy coupling , kpr couplings , orizin coupling , ROTAR COUPLING , cross coupling , angel universal joint coupling , SWP type universal joint , SWC type universal joint , flexible joint , needle bearings universal joints , universal joint with needle bearings , ball type universal joint , telescopic universal joint , universal joint with spline attachment , universal joint with slip shaft with rolling ball spline , transmission shaft , swz cardan shafts , propeller shaft , WSD WS series small cardan shaft , LQA series cardan shaft , WSS series cardan shaft , WSL series cardan shaft , WHL series cardan shaft , JSB JS series curve spring coupling , GL series chain coupling , GIICL series gear coupling , GIICLZ series gear coupling , WGT series gear coupling , WGP series gear coupling , NGCLZ WGZ series gear coupling , GICL series gear coupling , GICLZ series gear coupling , WGC series gear coupling , TGL series gear coupling , GCLD series gear coupling , JSB JS series curve spring coupling , JSS JSD series curve spring coupling , JSJ series curve sring coupling , KL series flexible coupling , JMI JMIJ series disc flexible coupling , JMII , JMIIJ disc flexible coupling , HL , HLL series flexible coupling , TL series flexible coupling , TLL series flexible coupling , TL series flexible coupling , LM LMD LMS series flexible coupling , LMZ – I , LMZ – II series flexible coupling , LX LXD LXS series flexible coupling , JTL JTLD ,JTLS series flexible coupling , yoke joint coupling , cross joint coupling , y shape linkages , flanged couping , universal joints , universal joints for large torque , single universal joint , double universal joint , S type universal joint , limited degree universal joint , ball joint , universal joint http://www.vardhmanbearings.com , cardan shaft http://www.vardhmanbearings.com , driven shaft http://www.vardhmanbearings.com , propeller shaft http://www.vardhmanbearings.com , rod end bearing http://www.vardhmanbearings.com , u joint http://www.vardhmanbearings.com , universal coupling http://www.vardhmanbearings.com , axies joint http://www.vardhmanbearings.com , telescopic universal joint http://www.vardhmanbearings.com , cross joint http://www.vardhmanbearings.com


















we also make special universal joints for textile and looms

like S type universal joint and limited degree universal joint ,




we manufacture heavy duty universal joints and cardan shafts , driven shafts








please visit us at http://www.vardhmanbearings.com

vardhman bearings
d-103, vasant aishwariya ,
opp vora colony ,
mathuradas extn rd
kandivli west ,
Mumbai -400067
Maharashtra
INDIA
Tel: 91-22-28627454
Tel/fax: 91-22-28653894 , 28656188
Cell : + 91 - 9819824531 , 9892432411
Email : jigesh2007@hotmail.com
: vardhmanbearings@rediffmail.com

for online chatting : HOTMAIL MSN : jigesh2007@hotmail.com
YAHOO MSG : jigesh2007@yahoo.co.in
SKYPE : jigesh2007














Friday, April 2, 2010








BTC ROD END BEARINGS





WE at VARDHMAN BEARINGS deal in BTC ROD END BEARINGS ,

we have all sizes in BTC ROD END BEARINGS

PHS 3 , PHS 4 , PHS 5 , PHS 6 , PHS 8 , PHS 10 , PHS 12 , PHS 14 , PHS 16 , PHS 18 , PHS 20 , PHS 22 , PHS 25 , PHS 28 , PHS 30 , PHS 35 , PHS 40 , PHS 50 , PHS 60

POS 3 , POS 4 , POS 5 , POS 6 , POS 8 , POS 10 , POS 12 , POS 14 , POS 16 , POS 18 , POS 20 , POS 22 , POS 25 , POS 28 , POS 30 , POS 35 , POS 40 , POS 50 , POS 60

DO VISIT ALL OUR WEBSITES FOR ALL OUR PRODUCTS
http://www.vardhmanbearings.com

http://www.arihantengineers.com

http://www.veerenterprises.com

http://www.ranjanaarts.com

thanking u
jigesh shah
for vardhman bearings
9892432411
9819824531
91-22-28627454
tel/fax: 91-22-28653894 , 28656188
email : jigesh2007@hotmail.com
vardhmanbearings@rediffmail.com


ADD US ON FOLLOWING FOR ONLINE DISCUSSION

HOTMAIL MSN : JIGESH2007@HOTMAIL.COM
YAHOO MSG : JIGESH2007@YAHOO.COM
SKYPE : JIGESH2007