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NTN 7334BG is a 73 series single-row angular contact ball bearing with a 170 mm straight bore. It features an open enclosure and a brass cage, designed for high-speed and high-precision applications such as machine tool spindles and pumps.
MODEL 7334BG
$4,199.88 Each
Prices are subject to change
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Returnable:No
a (Load Center)
5.7874 in
B (in)
2.8346
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Brass
Cage material
Brass
Cage Type
High Strength, 2 piece, Machined
Cage type
High strength, 2 piece, machined
Configuration
One
Contact angle
40 º
d (in)
6.6929
D (in)
14.1732
Da max
13.4646 in
da min
7.4016 in
Db max
13.8386 in
Double Row Width
5.6693 in
Dynamic Load Rating
80000 lbf
Dynamic load rating
80000 lbf
Enclosure
Open
I.D.
170 mm
Limiting Speed - Grease
1700 RPM
Limiting speed - grease
1700 RPM
Limiting Speed - Oil
2300 RPM
Limiting speed - oil
2300 RPM
Material
High carbon chrome steel
O.D.
360 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
Quadruple Row Width
11.3386 in
r (in)
0.1575
r1
0.0591 in
r1as max
0.0591 in
ras max
0.1181 in
Static Load Rating
100000 lbf
Static load rating
100000 lbf
Triple Row Width
8.5039 in
Type
Angular Contact Ball Bearing
Width
72 mm
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | High Strength, 2 piece, Machined |
Cage Material | Brass |
Ball Material | Steel |
Limiting Speed - Oil | 2300 RPM |
Limiting Speed - Grease | 1700 RPM |
Precision | ISO Class 0 |
Configuration | One |
Static Load Rating | 100000 lbf445000 N445.00 kN |
Dynamic Load Rating | 80000 lbf355000 N355.00 kN |
Enclosure | Open |
Weight | 79.366 lb36.000 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 6.6929 in170.000 mm |
D | 14.1732 in360.000 mm |
B | 2.8346 in72.000 mm |
r | 0.1575 in4.000 mm |
r1 | 0.0591 in1.500 mm |
Contact Angle | 40 |
a (Load Center) | 5.7874 in147.000 mm |
da min | 7.4016 in188.000 mm |
Da max | 13.4646 in342.000 mm |
Db max | 13.8386 in351.500 mm |
ras max | 0.1181 in3.000 mm |
r1as max | 0.0591 in1.500 mm |
Double Row Width | 5.6693 in144.000 mm |
Triple Row Width | 8.5039 in216.000 mm |
Quadruple Row Width | 11.3386 in288.000 mm |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
