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The NTN HK4020 is a drawn cup needle roller bearing with a 40 mm bore and 20 mm width. This open-end design features a cage-guided needle complement for high load capacity in compact spaces. Suitable for automotive transmissions, gear pumps, and industrial machinery where radial space is limited.
MODEL HK4020
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$15.11 Each
Prices are subject to change
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Brand Minimum Order Quantity: 5
Typically Ships in: 1 day
Returnable:No
Bearing Type
Needle Roller Bearing
Bore Type
Round
Bore type
Round
C (in)
0.7874
Cage Material
Steel
Cage material
Steel
Configuration
One
D (in)
1.8504
Dynamic Load Rating
5800 lbf
Dynamic load rating
5800 lbf
Enclosure
Open
Fw
1.5748 in
I.D.
40 mm
Limiting Speed - Grease
4000 RPM
Limiting speed - grease
4000 RPM
Limiting Speed - Oil
6000 RPM
Limiting speed - oil
6000 RPM
Material
Steel
O.D.
47 mm
Oil Hole
w/o Oil Hole
Oil hole
w/o Oil Hole
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Radial Internal Clearance
CN
Radial internal clearance
CN
Static Load Rating
11800 lbf
Static load rating
11800 lbf
Type
Drawn Cup Needle Roller Bearing
Technical Specifications
| Type | Drawn Cup Needle Roller Bearing |
|---|---|
| Bore Type | Round |
| Material | Steel |
| Cage Material | Steel |
| Limiting Speed - Oil | 6000 RPM |
| Limiting Speed - Grease | 4000 RPM |
| Bearing Type | Needle Roller Bearing |
| Configuration | One |
| Enclosure | Open |
| Radial Internal Clearance | CN |
| Precision | ISO Class 0 |
| Oil Hole | w/o Oil Hole |
| Static Load Rating | 11800 lbf52500 N52.50 kN |
| Dynamic Load Rating | 5800 lbf25900 N25.90 kN |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| Fw | 1.5748 in40.000 mm |
|---|---|
| D | 1.8504 in47.000 mm |
| C | 0.7874 in20.000 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.
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