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NTN 7E-HMK4025 is a drawn cup needle roller bearing with a 40 mm bore, 52 mm outside diameter, and 25 mm width. This open-end design features a steel cage and is unsealed. The heavy-walled HMK series provides increased load capacity for applications requiring compact radial support.
MODEL 7E-HMK4025
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$18.33 Each
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Brand Minimum Order Quantity: 4
Typically Ships in: 1 day
Returnable:No
Bearing Type
Needle Roller Bearing
Bore Type
Round
Bore type
Round
C (in)
0.9843
Cage Material
Steel
Cage material
Steel
Configuration
One
D (in)
1.9685
Dynamic Load Rating
9200 lbf
Dynamic load rating
9200 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.
50 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
Precision
ISO class 0
Radial Internal Clearance
CN
Radial internal clearance
CN
Static Load Rating
15200 lbf
Static load rating
15200 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 | 15200 lbf67500 N67.50 kN |
Dynamic Load Rating | 9200 lbf41000 N41.00 kN |
Weight | 0.207 lb0.094 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
Fw | 1.5748 in40.000 mm |
|---|---|
D | 1.9685 in50.000 mm |
C | 0.9843 in25.000 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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