Tianjin Haman Technology Co., Ltd
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Tapered roller bearings 30311-A

Tapered Roller Bearings 30311-A

Min. Order:
1 Piece
Payment term:
TT
Delivery time:
Stock
Technical Parameters:
Product Designations:
30311-A
Structure:
tapered roller bearing
Inside Diameter:
55 mm
Outside Diameter:
120 mm
Thickness:
31.5 mm
Weight:
1.8 KG
Precision Rating:
ABEC-5
Bearing Material:
Chrome Steel
Seals Type:
Open
Tapered Roller Bearings 30311-A

     

Item:Tapered Roller Bearing 30311-A

1)ISO 9001:2008 approved 
2)long life and low noise 
3)OEM service 
4)stocks

Specifications

Material :GCr15/GCr15SiMn / G20Gr2Ni4A 
Hardness :HRC60-HRC64 
Closures :Unsealed/Sealed Grade : P5

Clearance :C0, C3, C4

Lubrication :Oil or grease 
Features: These bearings are featured by the extremely big axial load carrying capacity and meanwhile they can also carry certain radial load

Packing :
1. For small ones: Anti-rust oil+ plastic bag+ paper box+ wooden box 
2. For big ones: Anti-rust oil+ waterproof belt+ professional belt +wooden box 


Application :Steel industry, oil industry, cement industry, mining & construction, papermaking machinery, rolling mill, sugar mill, vibrating screens, conveyors, air blower, transmissions, and other heavy machinery 

 

Tapered roller bearings 30311-A

 
main dimensions to DIN ISO 355 / DIN 720, separable, adjusted or in pairs

 

d 55  mm 
   
D 120  mm 
   
T 31,5  mm 
   
 
a 25  mm 
   
B 29  mm 
   
C 25  mm 
   
Ca min 4  mm 
   
Cb min 6,5  mm 
   
Da max 110  mm 
   
Da min 104  mm 
   
Db min 111  mm 
   
d1 84,7  mm 
   
da max 71  mm 
   
db min 65  mm 
   
r1, 2 min 2,5  mm 
   
r3, 4 min 2  mm 
   
ra max 2,5  mm 
   
rb max 2  mm 
   
 
m 1,8  kg 
  Mass
Cr 151000  N 
  Basic dynamic load rating, radial
C0r 173000  N 
  Basic static load rating, radial
e 0,35 
   
Y 1,74 
   
Y0 0,96 
   
Cur 20600  N 
  Fatigue limit load, radial
nG 6200  1/min 
  Limiting speed
nB 4500  1/min 
  Reference speed
  T2FB055 
  Comparative designation to DIN ISO 355

 

 

 

 


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