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KOYO HK4012 Needle Roller Bearing 40x47x12mm (Open End)
KOYO HK4012 drawn cup needle roller bearing, open end. Bore 40mm, OD 47mm, width 12mm.
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- Drawn cup (shell type) needle roller bearing - thin-walled deep-drawn outer shell forms the raceway
- High radial load capacity from the needle roller complement
- Koyo (JTEKT) precision manufacture to JIS standards
- Lowest sectional height of any needle roller bearing for a very compact arrangement
- Maximum operating temperature approximately 140C
- Open ends (standard type) with a narrow flange gap to retain grease and exclude contaminants
- Press-fit into the housing bore - no axial location fixtures required
| Brand | Koyo JTEKT |
|---|---|
| Bearing Type | Drawn Cup Needle Roller Bearing |
| Series | HK |
| Measurement System | Metric |
| Inner Diameter (Bore) | 40 mm |
| Outer Diameter | 47 mm |
| Width | 12 mm |
| Configuration | Open End |
| Material | Chrome Bearing Steel |
| Dynamic Load Rating (Cr) | 14700 N (14.7 kN) |
| Static Load Rating (C₀) | 25300 N (25.3 kN) |
| Limiting Speed (Grease) | 5200 rpm |
| Limiting Speed (Oil) | 7900 rpm |
| Fillet Radius (r min) | 1 mm |
| Weight | 0.033 kg |
| Features & Benefits | Drawn cup (shell type) needle roller bearing - thin-walled deep-drawn outer shell forms the raceway High radial load capacity from the needle roller complement Koyo (JTEKT) precision manufacture to JIS standards Lowest sectional height of any needle roller bearing for a very compact arrangement Maximum operating temperature approximately 140C Open ends (standard type) with a narrow flange gap to retain grease and exclude contaminants Press-fit into the housing bore - no axial location fixtures required |
The KOYO HK4012 is a drawn cup (shell type) needle roller bearing with open ends, for a 40mm shaft (metric series). Its thin-walled, deep-drawn outer shell forms the outer raceway, giving the lowest sectional height of any needle bearing while carrying high radial loads in a compact, economical package. Boundary dimensions 40 x 47 x 12mm.
The open-end (standard) type has a narrow flange gap that helps retain grease and exclude contamination. The bearing is press-fitted into the housing bore, so no axial location fixtures are needed; maximum operating temperature approximately 140C. Manufactured by Koyo (JTEKT), Japan.
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