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KOYO 6305ZZ Deep Groove Ball Bearings
6305ZZ

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Koyo JTEKT

KOYO 6305ZZ Deep Groove Ball Bearings

Part Number: 6305ZZ
Inner Diameter (Bore) 25 mm
Outer Diameter 62 mm
Width 17 mm
Seal Type ZZ
Clearance CN

KOYO 6305ZZ single-row deep groove ball bearing – shielded (zz). Bore 25mm x OD 62mm x width 17mm. Dynamic load rating 25.7 kN.

Qty:
  • Bore 25mm x OD 62mm x width 17mm
  • Carries radial and axial loads in both directions
  • Dynamic load rating 25.7 kN - static 11.3 kN
  • KOYO (JTEKT) chrome steel quality
  • Metal shields retain grease and exclude dust - permitting higher speeds
  • Single-row deep groove ball bearing - Shielded (ZZ)
Brand

Koyo JTEKT
Bearing Type

Deep Groove Ball Bearings
Series

6305
Inner Diameter (Bore)

25 mm
Outer Diameter

62 mm
Width

17 mm
Seal Type

ZZ
Material

Chrome Steel (AISI 52100)
Clearance

CN
Dynamic Load Rating (Cr)

25700 N (25.7 kN)
Static Load Rating (C₀)

11300 N
Limiting Speed (Grease)

11000 rpm
Limiting Speed (Oil)

13000 rpm
Fillet Radius (r min)

1.1 mm
Fatigue Load Limit (Cu)

0.860 kN
Weight

0.232 kg
Features & Benefits Bore 25mm x OD 62mm x width 17mm
Carries radial and axial loads in both directions
Dynamic load rating 25.7 kN - static 11.3 kN
KOYO (JTEKT) chrome steel quality
Metal shields retain grease and exclude dust - permitting higher speeds
Single-row deep groove ball bearing - Shielded (ZZ)

The KOYO 6305ZZ is a single-row deep groove ball bearing with double metal shields (ZZ) – measuring 25mm bore x 62mm outside diameter x 17mm width.

Load ratings: dynamic 25.7 kN (Cr) and static 11.3 kN (C0r) – fatigue load limit 0.860 kN. Limiting speed 11000 rpm with grease lubrication and 13000 rpm with oil lubrication. Minimum fillet radius 1.1mm.

Deep groove ball bearings are the most widely used bearing type – carrying radial and axial loads in both directions with low friction and high running accuracy. The metal shields retain the factory-filled grease and keep out dust and debris while allowing higher speeds than a contact seal.

Manufactured by KOYO (JTEKT) in chrome steel to ISO standards.

Koyo Ball Bearings Catalogue
PDF — 5 MB
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