Top-quality 4t-6386/6320 Ntn Taper Roller Bearing 66.68x135.80x53.98mm Save 75% + Free Ship [5sbulJM2]

NTN taper roller bearings are precision-engineered components designed to facilitate smooth rotational motion in various mechanical systems, particularly in applications where radial and axial loads need to be accommodated simultaneously. These bearings feature an inner ring (cone), an outer ring (cup), tapered rollers, and a cage assembly.

NTN taper roller bearings offer several advantages:

- High Load Capacity: The tapered design and robust construction enable these bearings to withstand heavy radial and axial loads, making them suitable for demanding applications.
- Precision Engineering: NTN's manufacturing processes ensure consistent quality and precision tolerances, resulting in reliable performance and extended service life.
- Reduced Friction: The tapered roller configuration minimizes frictional resistance, contributing to improved efficiency and energy savings.
- Versatility: These bearings are available in various sizes and configurations to suit diverse industrial applications, including automotive, aerospace, construction, and manufacturing.

Overall, NTN taper roller bearings are renowned for their durability, reliability, and exceptional performance in challenging operating conditions. They play a crucial role in enhancing the efficiency and reliability of machinery across various industries.

d - Internal diameter 66,675 mm
D - External diameter 135,755 mm
B - Bearing/Inner ring width 56,007 mm
C - Outer ring width 44,45 mm
T - Total width 53,975 mm
d1 - External diameter inner ring 98 mm
a - Charge load application point 35,175 mm
Mass 3,64 kg

PRODUCT PERFORMANCE
C - Dynamic load 310 kN
C0 - Static load 380 kN
Cu - Fatigue limit load 46,3 kN
A2 - Rating life coefficient 1
e - Coefficient 0.32
Y0 - Static axial load coefficient 1.02
Y2 - Upper axial load coefficient 1.85
Nlim - Oil lubrication limit speed 3800 tr/min
Nlim - Grease lubrication limit speed 2900 tr/min
Tmin - Min operating temperature -40 C
Tmax - Max operating temperature 120 C

ABUTMENT
da max - Max shoulder diameter IR 77 mm
db min - Min IR shoulder diameter 87 mm
Da max - Max shoulder diameter OR 117 mm
Db min - Min OR shoulder diameter 126 mm
ra max - Max fillet radius 4,3 mm
r1a - Max fillet radius 3,3 mm