BRAND: SKF

ID: 6307 ZZ NR GJN 

Description:

 

 SKF 6307-2ZNR/GJN – Deep Groove Ball Bearing (Single Row, Shielded, Snap Ring Groove, High-Temp Grease)

General Information

• Brand: SKF
• Item Number: 6307-2ZNR/GJN
• Also Known As: 6307-2ZNR, 6307-2Z-NR, 6307ZZ NR
• EAN: 7316571555324
• Category: Single Row Deep Groove Ball Bearing

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Dimensions & Weight

Parameter	Metric	Imperial
Inner Diameter (d)	35 mm	1.378 in
Outer Diameter (D)	80 mm	3.1496 in
Width (B)	21 mm	0.8268 in
Weight	0.464 kg	—

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Bearing Design & Properties

• Type: Deep groove ball bearing, single row
• Bore: Cylindrical (Code “C”)
• Sealing: 2Z – Steel shields on both sides
• Cage Type: S – Steel or standard cage
• External Modification: NR – Groove and snap ring on outer ring
• Radial Internal Clearance: CN – Normal internal play
• Precision: Standard (ISO Class 0 / ABEC 1)
• Lubrication: Factory-filled with GJN grease (polyurea thickener, NLGI 2)
• Heat Stabilization: Suitable for continuous operation up to 120 °C
• Special Treatment: None

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Suffix Description

Suffix	Meaning
2Z	Pressed steel shields on both sides of the bearing
NR	Snap ring groove in outer ring with snap ring included
GJN	Polyurea grease for high-temperature range –30 °C to +150 °C (normal filling grade)

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Performance & Advantages

• Maintenance-free design: Shields retain grease and protect from contamination.
• High-temperature capability: GJN grease enables stable operation under thermal stress.
• Snap ring groove (NR): Facilitates axial location in housings for compact design.
• Durable construction: Steel cage and shields ensure long service life in demanding environments.

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Typical Applications

• Electric motors and pumps
• Industrial fans and gearboxes
• HVAC systems
• Agricultural and construction machinery