18690/18620 NTN Tapered Roller Bearing 46.038x79.375x17.462mm

In stock
SKU: 18690/18620-NTN
NTN Imperial taper roller bearing priced cup & cone together 46.038x79.375x17.462mm, also known as 4T-18690/18620
Regular price £29.46 inc.VAT
£24.55 exc.VAT
All prices exclude VAT unless otherwise stated
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Product details

  • Vendor NTN
  • SKU 18690/18620-NTN
  • Inside diameter (d) 46.04mm
  • Outside diameter (D) 79.38mm
  • Width (B) 17.46mm

Tapered roller bearings are angular contact bearings comprised of separate components (cones and cups), facilitating installation. By design they are suitable for combined loading. They can sustain very high loads (axial load in one direction) and tolerate slight misalignment.

Always fitted oppositely with a bearing of the same nature, they provide high assembly stiffness, particularly when pre-loaded. Their load capacity associated with their versatility makes them the second most commonly used items, after radial-contact ball bearings.

d - Internal diameter 46,038 mm
D - External diameter 79,375 mm
B - Bearing/Inner ring width 17,462 mm
C - Outer ring width 13,495 mm
T - Total width 17,462 mm
d1 - External diameter inner ring 61 mm
a - Charge load application point 15,262 mm
Mass 0,331 kg
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PRODUCT PERFORMANCE
C - Dynamic load 50,5 kN
C0 - Static load 56 kN
Cu - Fatigue limit load 6,8 kN
A2 - Rating life coefficient 1
e - Coefficient 0.37
Y0 - Static axial load coefficient 0.88
Y2 - Upper axial load coefficient 1.6
N lim - Oil lubrication limit speed 6200 tr/min
N lim - Grease lubrication limit speed 4600 tr/min
Tmin - Min operating temperature -40 °C
Tmax - Max operating temperature 120 °C
ABUTMENT
da max - Max shoulder diameter IR 51 mm
db min - Min IR shoulder diameter 56 mm
Da max - Max shoulder diameter OR 71 mm
Db min - Min OR shoulder diameter 74 mm
ra max - Max fillet radius 2,8 mm
r1a - Max fillet radius 1,5 mm