dredging grab

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Product Details

Bearing numberNNU 4936 BK/SPW33
Size (mm)180x250x69
Bore Diameter (mm)180
Outer Diameter (mm)250
Width (mm)69
d180 mm
D250 mm
B69 mm
C69 mm
b8,3 mm
r1 min.2 mm
r2 min.2 mm
r3 min.1 mm
r4 min.1 mm
D1226.05 mm
F202 mm
K3 mm
da min.190 mm
da max199 mm
Da max.240 mm
db min205 mm
ra max.2 mm
S1,1 mm
dh203,5 mm
Weight10,5 Kg
Basic dynamic load rating (C)402 kN
Basic static load rating (C0)850 kN
(Grease) Lubrication Speed3 000 r/min
(Oil) Lubrication Speed3 400 r/min
CategoryCylindrical Roller Bearing
Inventory0.0
Minimum Buy QuantityN/A
Weight / Kilogram10.54
Product GroupB04144
Bore ProfileTapered
Cage MaterialBrass
Precision ClassSpecial Precision
Number of Rows of RollersDouble Row
SeparableInner Ring - Both Sides
Rolling ElementCylindrical Roller Bearing
ProfileComplete with Outer and Inner Ring
Snap RingNo
Internal ClearanceC1-Tight
RetainerYes
RelubricatableYes
Inch - MetricMetric
Other FeaturesPlain Inner Ring | 3 Rib Outer Ring | High Precision Bearing | Modified Internal Design | Cage on Outer Ring ID
Long Description180MM Bore; Tapered Bore Profile; 250MM Outside Diameter; 69MM Width; Brass Cage Matetrial; Special Precision; Double Row; Inner Ring - Both Sides Separable; No Snap Ring; Relubricatable; C1-Tight Int
UNSPSC31171547
Harmonized Tariff Code8482.50.00.00
NounBearing
Manufacturer Item NumberNNU 4936 BK/SPW33
Weight / LBS23.215
Bore7.087 Inch | 180 Millimeter
Outside Diameter9.843 Inch | 250 Millimeter
Width2.717 Inch | 69 Millimeter
bore diameter:180 mm
precision rating:Not Rated
outside diameter:250 mm
maximum rpm:3400 RPM
overall width:69 mm
bearing material:Chrome Steel
flanges:(3) Outer Ring
cage material:Brass
bore type:Straight
finish/coating:Uncoated
number of rows:2
closure type:Open
internal clearance:C1
outer ring width:69 mm
dynamic load capacity:402 kN
fillet radius:2 mm
static load capacity:880 kN
series:NNU49
r1,2 min.2 mm
r3,4 min.1 mm
s max.1.1 mm
da max.199 mm
dn203.5 mm
Basic dynamic load rating C402 kN
Basic static load rating C0850 kN
Fatigue load limit Pu88 kN
Attainable speed for grease lubrication3000 r/min
Attainable speed for oil-air lubrication3400 r/min
Reference grease quantity Gref81 cm³
Static radial stiffness (guideline value)5190 N/µm
Mass bearing10.5 kg
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Company Profile

Worktime 9:00-18:00(Beijing time)
Phone 86 0531-8299 9952
Fax 86 0531 -82990353
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