http://www.desmid.com/bearing-seal/
Ball Bearings
A ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the moving parts of the bearing.
The purpose of a ball bearing is to reduce rotational friction and support radial and axial loads. It achieves this by using at least two races to contain the balls and transmit the loads through the balls. Usually one of the races is held fixed. As one of the bearing races rotates it causes the balls to rotate as well. Because the balls are rolling they have a much lower coefficient of friction than if two flat surfaces were rotating on each other.
It tend to have lower load capacity for their size than other kinds of rolling-element bearings due to the smaller contact area between the balls and races. However, they can tolerate some misalignment of the inner and outer races.
Compared to other rolling-element bearings, this type of bearing is the least expensive, primarily because of the low cost of producing the balls used in the bearing.
Designs:
There are several common designs, each offering various trade-offs. They can be made from many different materials, including: stainless steel, chrome steel, and ceramic. A hybrid ball bearing is a bearing with ceramic balls and races of metal.
The basic parts of a ball bearing:
Inner Race – This is the part that is mounted on the rotating shaft and tends to rotate the shaft.
Outer Race – This is the part that is mounted to the housing and is stationary. This also serves as a means for transferring the loads from the bearing to the housing.
Rolling Element “Balls” – These are the elements that carry the load distributing it throughout the raceways. They tend to rotate about the inner race, but not at the speed the inner race rotates. It is something like the relation between the earth and the moon.
Cage – This is an important element in the bearing. This acts as a barrier between the balls preventing them from bumping into each other.
Apart from this the ball bearings are available with certain special constructional features like shielded bearings and sealed bearings.
Shielded:
The main difference between them is that in the case of a shielded bearing, it shields the rolling elements from the external dirt and the shield is normally made up of plastic or special rubber.
Sealed:
The sealed ball bearing is one which is completely sealed with lubricant inside. It prevents the flow of other lubricants into the rolling element area and also prevents the lubricant inside i.e. grease from getting out of the rolling element area.
Load Carrying Capability:
Ball bearing has a good capability to run at high speeds but average in carrying loads. They are able to carry only medium loads and hence find use in almost all the household items such as ceiling fans, Mixes, Grinders, etc.
These are capable of carrying good amount of radial loads but axial loads can be carried only to an extent. Hence, these bearings are not used in applications that require heavy axial load to be carried.
Notations:
1. The ball bearings are normally indicated with ’6′ as the starting series. Eg. 6006, 6204, etc. Hence a bearing with the starting number as ’6′ denotes a ball bearing.
2. A shielded ball bearing is normally denoted by ’2RSR’ as suffix to the bearing number. Example: 6006.2RSR
3. A sealed bearing is normally denoted by ‘Z’ as suffix if it is sealed on a single side and by ‘ZZ’ as suffix if it is sealed on both sides.
Note: The last but not the least, the place where you can find best quality ball bearings at Wholesale Price OnLine is at bearingsdirect.com
About the Author
While searching ball bearing for my skateboard on web I found an interesting link Ball Bearings, who did exactly what they promised.. It’s was great to keep in touch to them.. Bcoz they supply any ball bearings and roller bearings along with all features and custom special made materials, sizes and precision ball and roller bearings completely online, securely and safely. Am sure you too will be happy to deal with them.
1998 Ford Ranger – Axle Bearing & Seal Replacement
|
|
Chevrolet Chevelle Front Wheel Bearings/Seals Set 64-72 $34.95 |
|
|
NEW 4 FISHER PRICE LITTLE PEOPLE ZOO TALKERS SEAL ORANGUTAN HIPPO BEAR OSTRICH $24.99 |
|
|
6202RS Rubber Sealed Wheel Axle Ball Bearing 15 x 35 x 11mm $4.32 |
|
|
Chevrolet Malibu Front Wheel Bearings/Seals Set 73-78 $34.95 |
|
|
FIVE SEALED ITEMS OF BUILD A BEAR $4.99 |
|
|
Chevrolet Malibu Front Wheel Bearings/Seals Set 79-81 $34.95 |
|
|
22mm x 32mm x 7mm TC PU Polyurethane Double Lip Oil Shaft Seal Black $5.41 |
|
|
2006 Russ Berrie Plush SHINING STARS BEAR Sealed Code! (Does Not Sing Anymore) $19.99 |
|
|
Ford Fairlane Front Wheel Bearings & Seals Set 62-69 $34.95 |
|
|
Ford Fairlane Front Wheel Bearings & Seals Set 70-1971 $34.95 |
|
|
SUZUKI LT-Z400 2009 REAR WHEEL AXLE BEARINGS & SEAL KIT $25.99 |
|
|
Chevrolet Malibu Front Wheel Bearings/Seals Set 64-72 $34.95 |
|
|
42mm x 55mm x 7mm Rubber Metric Rotary Shaft TC Oil Seal w Steel Garter Spring $5.48 |
|
|
Metal Spring Rotary Shaft Metric Oil Seal Oilseal TC 40 x 50 x 7mm $5.87 |
|
|
23mm x 40mm x 10mm Polyurethane PU Metal Spring Oil Shaft Seal TC $5.82 |
|
|
Toyota 1770 1588cc 1407cc 4 Cyl Federal Mogul 4-67275CP 50MM NOS Rod Bearing Set $4.95 |
|
|
Arctic Cat Snowmobile Jackshaft Drive Shaft Bearing Seal Kit PANTERA 580 95-01 $41.85 |
|
|
6209RS Black Rubber Sealed 45 x 85 x 19mm Deep Groove Ball Bearing $18.14 |
|
|
Ford Torino Front Wheel Bearings & Seals Set 68-69 $34.95 |
|
|
25794 Eaton SK0503C05 Seal Kit $15.75 |
|
|
Ford Torino Front Wheel Bearings & Seals Set 70-73 $34.95 |
|
|
Ford Torino Front Wheel Bearings & Seals Set 74-76 $34.95 |
|
|
NP203 GM CHEVY DODGE 73-’79 TRANSFER CASE REBUILD KIT BEARING SEALS KIT $120.00 |
|
|
Honda ATC110 Front Wheel Bearings & Seals QPS $11.35 |
|
|
Goldwing GL1500 1200 Steel Head Bearings Kit Seals $32.00 |
|
|
(22pcs) XRAY 1:10 T3 2011 / T3 2012 Metal Sealed Ball Bearing Set $11.50 |
|
|
Metric Shaft Spring Loaded 35mm x 65mm x 8mm Oil Seal $5.95 |
|
|
105mm x 117mm x 4mm x 8mm J Type Polyurethane PU Thin Rod Wiper Dust Seal $6.33 |
|
|
15mm x 32mm x 9mm Double Sealed Ball Wheel Bearings $4.16 |
|
|
BULLETPROOF Scooter Sealed Bearing Threaded Headset 1-1/8″ BLACK $29.54 |
|
|
Front wheel bearing/seal kit Honda NX650 (Euro) 88-99 $13.18 |
|
|
Rear wheel bearing/seal kit Honda NX650 (Euro) 88-99 $18.03 |
|
|
OTC-4507 OTC Tools & Equipment Bearing Race & Seal Driver Set $67.58 |
|
|
Black Double Lip Rubber Metric Rotary TC Shaft Oil Seal 3.22″ x 2.36″ x 0.47″ $6.96 |
|
|
BULLETPROOF Scooter Sealed Bearing Threadless Headset 1-1/8″ GREY $29.54 |
|
|
Rear wheel bearing/seal kit Honda CT70 Trail 69-94 $11.87 |
|
|
Honda VT500 C 85-86 Steering Stem Head Bearings & Seals $33.65 |
|
|
Honda VT500 C Shadow D 83-84 Steering Stem Head Bearings & Seals $33.65 |
|
|
Honda VT500 E/F/FT 83-88 Steering Stem Head Bearings & Seals $33.65 |
|
|
Honda VT500 Eurosport 83-88 Steering Stem Head Bearings & Seals $33.65 |
|
|
Honda VT500 FT Ascot 83-84 Steering Stem Head Bearings & Seals $33.65 |
|
|
(14pcs) HPI 1:10 BLITZ SHORT COURSE TRUCK Metal Sealed Ball Bearing Set $5.50 |
|
|
Steel Spring Rubber Dual Lip Metric Axle Shaft Seal TC Oilseal 45x56x8mm $6.31 |
|
|
18mm Inner Dia 35mm Outside Diameter Double Lip Oil Shaft Seal TC Black $5.41 |
|
|
1.77″ x 2.2″ x 0.31″ Double Lip Rotary Shaft Oil Seal TC w Garter Spring $6.28 |
|
|
(24pcs) KYOSHO V-One-RRR / V-One-R4 Metal Sealed Ball Bearing Set $7.99 |
|
|
(32pcs) TAMIYA CR-01 Metal Sealed Ball Bearing Set $9.50 |
|
|
(14pcs) TEAM LOSI XXX-T CR Metal Sealed Ball Bearing Set $5.99 |
|
|
Steel Spring Metric Double Lip Oil Seal TC 28mm x 48mm x 8mm $4.98 |
|
|
TEAM LOSI MINI-T / MINI-T PRO / MINI-BAJA / MINI-SLIDER Metal Sealed Bearing Set $5.50 |
|
|
Double Lip PU Rubber TC Auto Shaft Oil Seal 34 x 46 x 10mm $5.59 |
|
|
50x72x7mm Rubber Shaft TC Oil Seal Black for Auto Car Motor $6.30 |
|
|
Piston Rod Polyurethane PU Double Lip Oil Shaft Seal QYd 60x72x12mm $5.07 |
|
|
30mm x 40mm x 5mm Garter Spring TC Double Lip Oil Shaft Seal $5.57 |
|
|
50x72x7mm Rubber Shaft TC Oil Seal Black for Auto Car Motor $6.66 |
|
|
Motor 627Z Double Sealed Stainless Steel Ball Bearings $7.50 |
|
|
(15pcs) TEAM LOSI HIGH ROLLER / STRIKE Metal Sealed Ball Bearing Set $5.99 |
|
|
(24pcs) OFNA JAMMIN X2 Metal Sealed Ball Bearing Set $7.99 |
|
|
(18pcs) KYOSHO LAZER ZX-5 FS 4WD BUGGY Metal Sealed Ball Bearing Set $6.50 |
|
|
6301RS Rubber Sealed 12 x 37 x 12mm Deep Groove Ball Wheel Bearing $5.51 |
|
|
New Mavic XM319 Disk 20mm F /Wheel Sealed bearing Black W10 $219.99 |
|
|
Motor 627Z Double Sealed Stainless Steel Ball Bearings $6.76 |
|
|
6x12x19mm Rubber Seal Linear Motion Bearings 2 Pcs $9.63 |
|
|
6010RS 50 x 80 x 16mm Double Side Sealed Deep Groove Ball Bearing $13.18 |
|
|
6302RS Rubber Sealed 15 x 42 x 13mm Deep Groove Ball Wheel Bearing $5.94 |
|
|
6301RS Rubber Sealed 12 x 37 x 12mm Deep Groove Ball Wheel Bearing $5.46 |
|
|
WARRIOR BIG BEAR VIRAGO XT 600 XJ XS TT DT VALVE SEAL $6.00 |
|
|
Disney Brother Bear – NEW FACTORY SEALED SOFTWARE $9.87 |
|
|
17 x 40 x 12 6203-2RS Double Side Sealed Ball Bearing $4.90 |
|
|
(10 pcs) 4x8x3mm Rubber-Sealed Ball Bearing Set $12.00 |
|
|
Double Lips 35 x 50 x 12mm TC Oil Seal for Car Truck $5.38 |
|
|
New Huebsch,Unimac,Speed Queen 18lbs Bearing & Seals $45.00 |
|
|
(10 pcs) 5x8x2.5mm Rubber-Sealed Ball Bearing Set $14.00 |
|
|
J Type PU Gasket Piston Rod Wiper Dust Seal 75 x 87 x 4 x 8mm $4.07 |
|
|
(10 pcs) 5x10x4mm Rubber-Sealed Ball Bearing Set $12.00 |
|
|
R&B/Soul Sealed! RICHARD T. BEAR Red Hot & Blue ORIG $19.99 |
|
|
(10 pcs) 5x11x4mm Rubber-Sealed Ball Bearing Set $14.00 |
|
|
(10 pcs) 6x10x3mm Rubber-Sealed Ball Bearing Set $14.00 |
|
|
(10 pcs) 6x12x4mm Rubber-Sealed Ball Bearing Set $14.00 |
|
|
(10 pcs) 6x13x5mm Rubber-Sealed Ball Bearing Set $14.00 |
|
|
(10 pcs) 8x14x4mm Rubber-Sealed Ball Bearing Set $15.00 |
|
|
(10 pcs) 8x16x5mm Rubber-Sealed Ball Bearing Set $15.00 |
|
|
Teddy Bear Family FELT STOCKING KIT Sealed MIP $24.99 |
|
|
(10 pcs) 10x15x4mm Rubber-Sealed Ball Bearing Set $15.00 |
|
|
23741 Chicago Rawhide 51125 Oil Seal 130 x 160 x 12mm $25.46 |
|
|
23750 NEW Timken 703228 Oil Seal 45X60X7mm $5.25 |
|
|
25201 Chicago Rawhide 534949 Oil Seal 0.945″ID 2.441″ O $15.61 |
|
|
(10 pcs) 10x19x5mm Rubber-Sealed Ball Bearing Set $15.00 |
|
|
F X Schmid Puzzle Who Took My Sled? Polar Bear NEW SEALED $9.99 |
|
|
(10 pcs) 12x18x4mm Rubber-Sealed Ball Bearing Set $15.00 |
|
|
23739 NEW Chicago Rawhide 12363 Oil Seal 1-1/4″ID 1.752 $4.19 |
|
|
23740 NEW Chicago Rawhide 8703 Oil Seal 7/8″ID 1.499″OD $4.19 |
|
|
23751 NEW Chicago Rawhide 14247 Oil Seal 1-7/16″ID 2-1/ $5.61 |
|
|
23753 NEW Timken 600876 Oil Seal 40X62X7mm $5.61 |
|
|
(18pcs) YOKOMO B-MAX4 4WD BUGGY Rubber Sealed Ball Bearing Set $10.50 |
|
|
(16pcs) DURATRAX EVADER BX / EVADER ST Rubber Sealed Ball Bearing Set $9.50 |
|
|
(36pcs) TAMIYA 1:16 KING TIGER TANK Metal Sealed Ball Bearing Set $23.50 |
|
|
(14pcs) SCHUMACHER 1:16 RASCAL 2WD TRUCK Rubber Sealed Ball Bearing Set $8.50 |
|
|
SMOKEY the BEAR US FOREST SERVICE FIREFIGHTER METAL SIGN PLATE YELLOW SEALED $2.69 |
|
|
2012 UNCIRCULATED CANADA $20 DOLLAR 9999 FINE SILVER COIN POLAR BEAR SEALED $32.41 |