PRODUCT INFORMATION

Description and selection guidance

NTN Bearing 4T-30307 belongs to the Tapered Roller Bearings family. The technical tables below show the available dimensions, ratings, speeds and mounting limits for this item.

When requesting a quotation, provide the complete item number, required quantity and operating conditions so Cat Son can verify the configuration.

4T-30307 specifications

TECHNICAL SPECIFICATIONS

Brand / Manufacturer
NTN
d - Shaft bore diameter
35 mm
D - Diameter outside
80 mm
B - Width
21 mm
C - Outer-ring width
18 mm
T - Overall width
22,75 mm
d1 - Inner-ring outside diameter
55,5 mm
a - Load application point
17 mm
rs - Minimum fillet radius
2 mm
r1s - Minimum fillet radius
1,5 mm
Weight
0,535 kg
ISO 355 refethreadce
T2FB035

PRODUCT PERFORMANCE

C - Basic dynamic load rating
83 kN
C0 - Basic static load rating
77 kN
Cu - Fatigue load limit
9,4 kN
A2 - Rated-life factor
1
e - Limiting value
0.31
Y0 - Static axial load factor
1.05
Y2 - Upper axial load factor
1.9
N lim - Oil lubrication limiting speed
6600 tr/min
N lim - Grease lubrication limiting speed
5000 tr/min
Tmin - Minimum operating temperature
-40 °C
Tmax - Maximum operating temperature
120 °C

LIMITS

da max - Maximum shoulder diameter IR
45 mm
db min - Minimum shoulder diameter IR
45 mm
Da min - Minimum shoulder diameter OR
70 mm
Da max - Maximum shoulder diameter OR
71,5 mm
Db min - Minimum shoulder diameter OR
74 mm
Ca - Minimum space width
3 mm
Ca - Minimum space width
4,5 mm
ra max - Maximum fillet radius
2 mm
r1a - Maximum fillet radius
1,5 mm
NTN ITEM SUPPORT

Send the current item and operating conditions.

Cat Son can compare dimensions, design and mounting conditions before quotation.