Spherical Roller Bearing 21307 E 21307 EK 35x80x21mm For Grinding Mills
|Product Name:||Spherical roller bearing|
|Model:||21307 E 21307 EK|
|Old model:||21307 E 21307 EK|
|Price:||USD20 to 100|
|Delivery time:||In stock|
|Shipping Ways:||By sea by air FedEx/DHL,UPS available|
|Port:||Shanghai /Qingdao seaport|
|Transport Package:||Carton+Wooden case|
|Country of Origin:||China|
|Keywords:||21307 E bearing, 21307 EK bearings,21307 E 21307 EK roller bearing,21307 E 21307 EK china bearing factory|
|Structure:||Double row spherical roller bearing|
|Number of Rows:||2 rows|
|HS Code:||8482300000 spherical roller bearing|
|Basic load rating C :(KN)||65.6|
|Basic load rating Co:(KN)||72|
|Reference speed: r/min||6700|
|Brand:||JHB or OEM|
|Clearance:||C1 C2 C0 C3 C4|
|Bearing Material:||Steel Chrome GCr15 GCr15SiMn|
|Cage material:||Steel 08AI|
|Number of Roller:||Two|
|Roller Material:||Steel chrome|
|Service:||Offer assembly drawing,technology service|
|Quality Control:||ISO9001:2008 Quality certificate|
Wheel Continuous casters Screw conveyors Grinding mills Press rolls Gear shafts
Drying cylinders Conveyor pulleys Roller tables Calanders Crushers Propulsion equipment Flour mills Gear shafts Felt rolls Wire rolls
Industrial fans Blowers Agricultural machinery Gear shafts Suction rolls
Vibrating screen Washing machinery Crank press
Shredders Chippers Industrial lawn mowers Large electric motors Crushers Blowers Mixers Harvesters Pumps
Paper dryers Heated calenders Cookers Mixers Yankee drying cylinders Heat exchangers
C2 Radial internal clearance smaller than Normal
C3 Radial internal clearance greater than Normal
C4 Radial internal clearance greater than C3
C5 Radial internal clearance greater than C4
C08 Increased running accuracy to ISO tolerance class 5
C083 C08 + C3
C084 C08 + C4
2CS Sheet steel reinforced contact seal of acrylonitrile-butadiene rubber
(NBR) on both sides of the bearing. Grease fill 25 to 35 % with SKF LGEP 2 grease. Annular
groove and three lubrication holes in the outer ring.
2CS2 Sheet steel reinforced contact seal of fluoro rubber (FKM) on both sides of the bearing. Grease fill 70 to 100 % with a polyurea high temperature grease. Annular groove and three lubrication holes in the outer ring 2CS5 Sheet steel reinforced contact seal of hydrogenated acrylonitrile-butadiene rubber (HNBR) on both sides of the bearing. Grease fill 70 to 100 % with a polyurea high temperature grease. Annular groove and three lubrication holes in the outer ring
HA3 Case hardened inner ring
K Tapered bore, taper 1:12
K30 Tapered bore, taper 1:30
P5 Dimensional and running accuracy to ISO tolerance class 5
P6 Dimensional and running accuracy to ISO tolerance class 6
P62 P6 + C2
VA405 Bearing for vibratory applications
VA406 Bearing for vibratory applications
with PTFE-coated bore
VE552(E) Outer ring with three equally spaced threaded holes in one side face to accommodate hoisting tackle; the E indicates that appropriate eye bolts are supplied with the bearings
VE553(E) Outer ring with three equally spaced threaded holes in both side faces to accommodate
hoisting tackle; the E indicates that appropriate eye bolts are supplied with the bearings
VG114 Surface hardened pressed steel cages
VQ424 Running accuracy better than C08
VT143 Grease fill 25 to 35 % with SKFLGEP 2 grease
W No relubrication facility in the outer ring
W20 Three lubrication holes in the outer ring
The inner ring of spherical roller bearings have two raceways, outer raceway is a part of a sphere, whose curvature center is on the axis of bearings. This type of bearings possesses self-aligning performance, allowing the misalignment of shaft, and can also be used under certain permanent misalignment.
These bearings are able to carry higher radial loads, as well as certain axial loads, but can’t be used to carry pure axial loads. The osculation between rollers and raceways is high, and friction is higher than cylindrical roller bearings. Therefore, the limiting speed is lower.
This type of bearings is especially suitable to the heavy or vibrating load applications.
The type 20000C bearings have symmetrical rollers and pressed steel cages, no rib on inner ring, rollers are longer, load carrying capacity is high, and rollers are guided by a floating guide ring.
The type 20000CC bearings are the modified type to type 20000C, the friction between rollers and raceway is decreased, load carrying capacity is enhanced.
The type 20000CA bearings adopt symmetrical spherical rollers and machined solid cages, they have floating guide ring and integral ribs on inner rings.
The type 20000TN1 bearings use symmetrical rollers and nylon molded cages, no integral ribs and floating guide ring on inner ring, the cages are guided by rollers.
The type 20000CC, 20000CA and 20000TN1 bearings are developed in recent years and their internal design are optimized, should give priority to be used.
We JINHANG Precision bearing are a professional
Precision bearing manufacturer in the world, established in 2005, specializing in slewing bearings, slewing drives,rotary table bearing,crossed roller bearing,cylindrical roller bearing,tapered roller bearing,spherical roller bearing,thrust roller bearing thrust ball bearing,tandem bearing,pinion and other special machine parts, with design, production, sales, marketing and service all over the world. For the high precision bearing,our precision grade can reach to P5 P4 P2 class.
Our team advantage:
We have 70 employees, with 10 experienced engineers and professional technicists. The most of Engineer from LYC and ZWZ brand factory, they had owned produce and design and after sales experienced to design the bearing.We can also design the drawing according to the bearing work condition to meet the customer requirement.