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The NTN HMK1521LL is a drawn cup needle roller bearing with a 15 mm bore. This HMK type bearing features double seals and a steel cage for reliable performance in compact applications. Designed for oscillating and rotating motion where radial space is limited.
MODEL HMK1521LL
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$17.54 Each
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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)
0.8268
Cage Material
Steel
Cage material
Steel
Configuration
One
D (in)
0.8661
Dynamic Load Rating
2450 lbf
Dynamic load rating
2450 lbf
Enclosure
Double Sealed
Fw
0.5906 in
I.D.
15 mm
Limiting Speed - Grease
10000 RPM
Limiting speed - grease
10000 RPM
Material
Steel
O.D.
22 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
Seal Material
Nitrile Rubber
Seal material
Nitrile rubber
Static Load Rating
2860 lbf
Static load rating
2860 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 - Grease | 10000 RPM |
Seal Material | Nitrile Rubber |
Bearing Type | Needle Roller Bearing |
Configuration | One |
Enclosure | Double Sealed |
Radial Internal Clearance | CN |
Precision | ISO Class 0 |
Oil Hole | w/o Oil Hole |
Static Load Rating | 2860 lbf12700 N12.70 kN |
Dynamic Load Rating | 2450 lbf10900 N10.90 kN |
Weight | 0.040 lb0.018 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
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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