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thrust ball images bearings 81172M SKF Characteristics

Bearing number:NU 228 ECML
Size (mm):250x140x42
Bore Diameter (mm):250
Outer Diameter (mm):140
Width (mm):42
d:140 mm
D:250 mm
B:42 mm
D1:216.7 mm
F:169 mm
r1,2 - min.:3 mm
r3,4 - min.:3 mm
s:2.5 mm
da - min.:154 mm
da - max.:165 mm
db - min.:172 mm
Da - max.:235 mm
ra - max.:2.5 mm
rb - max.:2.5 mm
Basic dynamic load rating - C:450 kN
Basic static load rating - C0:510 kN
Fatigue load limit - Pu:57 kN
Reference speed:2800 r/min
Limiting speed:4800 r/min
Calculation factor - kr:0.23
Category:Cylindrical Roller Bearing
Inventory:0.0
Minimum Buy Quantity:N/A
Weight / Kilogram:9.445
Product Group:B04144
Bore Profile:Straight
Cage Material:Brass
Precision Class:RBEC 1 | ISO P0
Number of Rows of Rollers:Single Row
Separable:Inner Ring - Both Sides
Rolling Element:Cylindrical Roller Bearing
Profile:Complete with Outer and Inner Ring
Snap Ring:No
Internal Clearance:C0-Medium
Retainer:Yes
Relubricatable:Yes
Inch - Metric:Metric
Other Features:High Capacity | Plain Inner Ring | 2 Rib Outer Ring | Cage on Outer Ring ID
Long Description:140MM Bore; Straight Bore Profile; 250MM Outside Diameter; 42MM Width; Brass Cage Matetrial; RBEC 1 | ISO P0; Single Row; Inner Ring - Both Sides Separable; No Snap Ring; Relubricatable; C0-Medium Int
UNSPSC:31171547
Harmonized Tariff Code:8482.50.00.00
Noun:Bearing
Manufacturer Item Number:NU 228 ECML
Weight / LBS:20.803
Outside Diameter:9.843 Inch | 250 Millimeter
Bore:5.512 Inch | 140 Millimeter
Width:1.654 Inch | 42 Millimeter
bore diameter::140 mm
static load capacity::510 kN
outside diameter::250 mm
maximum rpm::4800 rpm
overall width::42 mm
bearing material::Steel
flanges::(2) Flanges on outer Ring, Flangeless Inner Ring
cage material::Brass
bore type::Straight
finish/coating::Uncoated
number of rows::1
closure type::Open
operating temperature range::Maximum 302 °F
series::NU
dynamic load capacity::450 kn
manufacturer upc number::7316570321777
D1 ≈:216.7 mm
r1,2 min.:3 mm
r3,4 min.:3 mm
s max.:2.5 mm
da min.:154 mm
da max.:165 mm
db min.:172 mm
Da max.:235 mm
ra max.:2.5 mm
rb max.:2.5 mm
Basic dynamic load rating C:450 kN
Basic static load rating C0:510 kN
Fatigue load limit Pu:57 kN
Calculation factor kr:0.23
Limiting value e:0.2
Axial load factor Y:0.6
Mass bearing:9.24 kg

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Pioneer Machinery Source: Email[email protected]; Address13 Tuas Road Distributor Service Singapore 638512; Phone(Working Time)0065 82577418; Fax0065 82577552

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