Home Bearings Roller Bearings Shell Type (Drawn Cup) Needle Roller Bearings KOYO B-308 Needle Roller Bearing 47.625×57.150×12.70mm (Open End)
KOYO B-308 Needle Roller Bearing 47.625x57.150x12.70mm (Open End)
B-308

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Koyo JTEKT

KOYO B-308 Needle Roller Bearing 47.625×57.150×12.70mm (Open End)

Part Number: B-308
Inner Diameter (Bore) 47.625 mm
Outer Diameter 57.150 mm
Width 12.70 mm

KOYO B-308 drawn cup needle roller bearing, open end. Bore 47.625mm, OD 57.150mm, width 12.70mm.

Qty:
  • 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

B
Measurement System

Imperial
Inner Diameter (Bore)

47.625 mm
Outer Diameter

57.150 mm
Width

12.70 mm
Configuration

Open End
Material

Chrome Bearing Steel
Dynamic Load Rating (Cr)

25100 N (25.1 kN)
Static Load Rating (C₀)

46400 N (46.4 kN)
Weight

7.00 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 B-308 is a drawn cup (shell type) needle roller bearing with open ends, for a 47.625mm shaft (imperial 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 47.625 x 57.150 x 12.70mm.

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.

KOYO B & BH Imperial Series
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