Koyo Bearings HK0408 - Caged Drawn Cup Needle Roller Bearing - 4 mm ID, 8 mm OD, 8 mm Width, MFR ID KOY-HK0408
- MFR #HK0408
- EIS #HK040808
- UPC #605790186332
- Midpoint #KOY-HK0408
$7.52 / Piece
Available to Order
Min QTY1QTY Increment1
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HK0408 - Needle Roller Bearing, Drawn Cup Needle Roller Bearings
Features
- Best used for good radial load capacity and high speeds for thin cross section applications
- A hardened and machined shaft or an "IR" Inner Ring is required for optimal performance
- A press fit into the housing is required
- Available with an oil hole (-OH or .AS1 in suffix)
- Available with one seal (JT, MJT, HK-RS) or two seals (JTT, HK-.2RS)
- Available with heavy duty rollers (JH style) for applications that require maximum radial load capacity and high speed
- Available with a closed end (MJ , BK)
- Available in inch (J, MJ) and metric (HK, BK)
General Information
| Item Name | Needle Roller Bearings |
| Series | HK |
General Features
| Net Weight | 0.013 lb |
Design & Construction
| Bore Type | Round |
| Cage Material | Steel |
| Cage Type | Riveted |
| Closure Type | Open |
| Lubrication Type | Rust Preventative |
| Material | 1010 Steel |
| Mounting Method | Press Fit |
| Relubrication Feature | No |
| Rolling Element | Needle Roller |
| Rolling Element Material | 52100 |
| Row Type | Single row |
Performance Details
| Dynamic Load Capacity | 1.88 kn |
| Operating Temperature | -30 to 110 °C |
| Precision Class | ABEC 1 |
| Self Aligning | No |
| Speed Rating | 25000 rpm (Grease) | 39000 rpm (Oil) |
| Static Load Capacity | 1.38 kn |
Physical Properties
| Bore Diameter | 4 mm |
| Fillet Radius | 0.016 Inch |
| Outside Diameter | 8 mm |
| Outside Width | 0.315 Inch |
| Overall Width | 0.315 Inch |
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