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NTN 742020/GNP4 is a thrust ball bearing with a straight bore, open enclosure, and brass cage. Constructed from high carbon chrome steel, it is designed for axial load applications in precision machinery and industrial equipment.
MODEL 742020/GNP4
$3,547.84 Each
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Returnable:No
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
C (in)
1.1811
Cage Material
Brass
Cage material
Brass
Cage Type
Machined
Cage type
Machined
Configuration
Two
Contact angle
45 º
D (in)
5.9055
d (in)
3.9370
Da max
4.6850 in
da min
4.685 in
Dynamic Load Rating
14100 lbf
Dynamic load rating
14100 lbf
Enclosure
Open
Ew
5.3937 in
I.D.
100 mm
J (in)
4.9606
Limiting Speed - Grease
3500 RPM
Limiting speed - grease
3500 RPM
Limiting Speed - Oil
4600 RPM
Limiting speed - oil
4600 RPM
Material
High carbon chrome steel
O.D.
150 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
ISO class 4
r (in)
0.0591
r1
0.0394 in
r1as max
0.0315 in
ras max
0.0591 in
Seal material
None
Seal type
None
Static Load Rating
35500 lbf
Static load rating
35500 lbf
T1
1.9685 in
Type
Thrust Ball Bearing
Technical Specifications
Type | Thrust Ball Bearing |
Bore Type | Round |
Outside Ring Type | Straight |
Material | High Carbon Chrome Steel |
Cage Type | Machined |
Cage Material | Brass |
Ball Material | Steel |
Limiting Speed - Oil | 4600 RPM |
Limiting Speed - Grease | 3500 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 4 |
Configuration | Two |
Static Load Rating | 35500 lbf158000 N158.00 kN |
Dynamic Load Rating | 14100 lbf62500 N62.50 kN |
Enclosure | Open |
Weight | 5.613 lb2.546 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 3.9370 in100.000 mm |
D | 5.9055 in150.000 mm |
C | 1.1811 in30.000 mm |
T1 | 1.9685 in50.000 mm |
J | 4.9606 in126.000 mm |
Ew | 5.3937 in137.000 mm |
r | 0.0591 in1.500 mm |
r1 | 0.0394 in1.000 mm |
Contact Angle | 45 |
da min | 4.6850 in119.000 mm |
Da max | 4.6850 in119.000 mm |
ras max | 0.0591 in1.500 mm |
r1as max | 0.0315 in0.800 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.
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