240/500ECAK30/W33 500*720*218mm Spherical Roller Bearing For Paper Mill
240/500ECA/W33
Bore Diameter:500 mm
Outside Diameter:720 mm
Width:218 mm
Weight:295 kg
Reference FOB Price:US15000 ~ 15500 / Piece
Min. Order:1 Piece
The 240/500ECA/W33 bearing is a Spherical roller bearing with an inner diameter of 500 mm , an outer diameter of 720 mm, a width of 218 mm. It typically uses P0 grade precision tolerances and features a brass cage, gcr15 rings. It primarily bears radial/Axial, Its dynamic radial rated load is approximately 5777, its static radial rated load is approximately 11000. It uses C0/C3 standard radial clearance, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
Feature: Spherical
Application: Paper Mill
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Detailed description
| Designations | Principal dimensions | Basic load ratings | Fatigue load limit |
Speed ratings | Dimensions | Abutment and illet dimensions | Calculation factors | Mass | |||||||||||||||
| Bearing with cylindrical bore | Bearing with tapered bore | d | D | B | dynamic C | static C0 | Pu |
Reference speed |
Limiting speed |
d2 ≈ |
D1 ≈ |
b | K | r1,2 min |
da min | da max | Da max | ra max | e | Y1 | Y2 | Y0 | |
| – | mm | mm | mm | kN | kN | kN | r/min | mm | – | kg | |||||||||||||
| 240/500ECA/W33 | 240/500ECAK30/W33 | 500 | 720 | 218 | 5777 | 11000 | 735 | 430 | 700 | 566 | 644 | 22.3 | 12 | 6 | 523 | – | 697 | 5 | 0.26 | 2.6 | 3.9 | 2.5 | 295 |
Spherical roller bearings
Spherical roller bearings have two rows of symmetrical rollers, a common sphered outer ring raceway and two inner ring raceways inclined at an angle to the bearing axis
The centre point of the sphere in the outer ring raceway is at the bearing axis.
Bearing features
Accommodate misalignment Spherical roller bearings are self-aligning like self-aligning ball bearings or CARB bearings .
• High load carrying capacity
Spherical roller bearings are designed to accommodate both heavy radial loads and axial loads in both directions .
• Long service life
The rollers are manufactured to such tight dimensional and geometrical tolerances that they are practically identical in a roller set The symmetrical rollers self-adjust, providing optimal load distribution along the roller length and together with the special proile prevent stress peaks at the roller ends.
• Low friction
Self-guiding rollers keep friction and frictional heat at low levels A loating guide ring guides unloaded rollers so that they enter the load zone in the optimal position .
• Robust
All spherical roller bearings contain strong window- or prong-type cages.
Designs and variants
Standard assortment
The assortment of SKF spherical roller bearings is the widest available on the market.
The standard assortment includes:
• CC, CA and E design bearings
• sealed bearings
• bearings for vibratory applications
• bearings for wind energy applications
All spherical roller bearings areExplorer bearings and almost all bearings are available with the option of a tapered bore Depending on the bearing series, the tapered bore has:
• a taper 1:12 (designation sufix K)
• a taper 1:30 (designation sufix K30)
CC design bearings
• have two stamped window-type steel cages, an inner ring without langes and a loating guide ring centred on the inner ring.
• are indicated in the product table by the designation sufix C or CC
• are indicated in the product table by the designation sufix EC or ECC for larger bearings and have an optimized internal design for increased load carrying capacity
CA design bearings
• have a machined double prong-type brass cage, an inner ring with a retaining lange on both sides and a loating guide ring centred on the inner ring.
The langes on the inner ring are designed to keep the rollers in place when swivelling the bearing during mounting or maintenance and are not designed to guide the rollers or accommodate any axial load .
• are indicated in the product table by the designation sufix CA
• are indicated in the product table by the designation sufix ECA for larger bearings and have an optimized internal design for increased load carrying capacity
E design bearings
• have two stamped window-type steel cages, an inner ring without langes and a loating guide ring centred on the inner ring (d ≤ 65 mm) or on the cages (d > 65 mm).
• are indicated in the product table by the designation sufix E
• have an optimized internal design for increased load carrying capacity
Designation system
Preixes
BS2-.. Bearing, designated by a drawing number
ZE Bearing with SensorMount feature
Basic designation
Listed in table 4, page 30
Figure with four digits: drawing number identiication
Sufixes
Group 1: Internal design
BC Bearing for wind turbine main shafts with roller-guided cast iron cage
CA, CAC Retaining langes on the inner ring, guide ring centred on the inner ring, machined brass
cage
CC(J), CJ Flangeless inner ring, guide ring centred on the inner ring, two stamped steel cages
CCJA, EJA Flangeless inner ring, guide ring centred on the outer ring raceway, two stamped steel
cages
E Optimized internal design for increased load carrying capacity
213, 222 and 223 series: Flangeless inner ring and two stamped steel cages Annular
groove and three lubrication holes in the outer ring
d ≤ 65 mm: Guide ring centred on the inner ring
d > 65 mm: Guide ring centred on the cage
Group 2: External design (seals, snap ring groove, etc.)
-CS, -2CS Contact seal, NBR, on one or both sides
-CS2, -2CS2 Contact seal, FKM, on one or both sides
-CS5, -2CS5 Contact seal, HNBR, on one or both sides
-RS, -2RS Contact seal, NBR, on one or both sides
-RS5, -2RS5 Contact seal, HNBR, on one or both sides
K Tapered bore, taper 1:12
K30 Tapered bore, taper 1:30
Group 3: Cage design
F Machined steel cage, inner ring centred
FA Machined steel cage, outer ring centred
J Stamped steel cage, inner ring centred
JA Stamped steel cage, outer ring centred
MA Machined brass cage, outer ring centred
Group 4.6: Other variants
R505 Bearing for railway axleboxes
VA405 Bearing for vibratory applications, surface-hardened stamped steel cages
VA406 Same as VA405, and PTFE coated cylindrical inner ring bore
VA991 Bearing for high-speed applications
VE552(E) Outer ring with three equally-spaced threaded holes in one side face to accommodate lifting
tackle The E indicates that appropriate eye bolts are supplied with the bearing
VE553(E) Same as VE552(E), but threaded holes in both side faces
VG114 Surface-hardened stamped steel cages
VQ424 Running accuracy better than C08
Group 4.5: Lubrication
GEM9 Filled to 70 – 100% with SKF LGHB 2 grease
GLE Filled to 25 – 45% with SKF LGWM 2 grease
VT143 Filled to 25 – 45% with SKF LGEP 2 grease
VT143B Filled to 45 – 60% with SKF LGEP 2 grease
VT143C Filled to 70 – 100% with SKF LGEP 2 grease
W64 Solid Oil
W Without annular groove and lubrication holes in the outer ring
W20 Three lubrication holes in the outer ring
W26 Six lubrication holes in the inner ring
W33 Annular groove and three lubrication holes in the outer ring
W33X Annular groove and six lubrication holes in the outer ring
W77 Plugged W33 lubrication holes
W513 W26 + W33
Group 4.2: Accuracy, clearance, preload, quiet running
C08 Running accuracy to P5 tolerance class
C083 C08 + C3
C084 C08 + C4
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
P5 Dimensional and running accuracy to P5 tolerance class
P6 Dimensional and running accuracy to P6 tolerance class
P62 P6 + C2
Group 4.1: Materials, heat treatment
235220 Case-hardened inner ring with a helical groove in the bore
HA3 Case-hardened inner ring
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