ZVL NU 307 E C3 Cylindrical Roller Bearing 35x80x21

Overview

The ZVL NU 307 E C3 is a premium single-row cylindrical roller bearing engineered to carry very high radial loads while allowing axial displacement of the shaft relative to the housing in both directions. The NU design features two integral flanges on the outer ring and no flanges on the inner ring, making it ideal for applications where thermal expansion of the shaft must be accommodated without generating additional internal stresses.

The E designation indicates an optimized internal design with increased roller capacity, resulting in higher dynamic load ratings than standard designs. The C3 suffix specifies greater-than-normal internal radial clearance, making the bearing suitable for high-speed operation, elevated temperatures and interference-fit applications.

Industrial Applications

The ZVL NU 307 E C3 is widely used in:

• Electric motors
• Industrial gearboxes
• Pumps
• Compressors
• Fans and blowers
• Machine tools
• Conveyor systems
• Agricultural machinery
• Mining equipment
• Heavy industrial machinery

Construction

The bearing features:

• Single-row cylindrical roller bearing
• NU design
• Two flanges on the outer ring
• Flangeless inner ring
• Axial displacement capability in both directions
• E reinforced internal design
• C3 internal radial clearance
• Pressed steel cage
• Open construction

The NU design allows the shaft to move axially relative to the housing while maintaining excellent radial load capacity, making it particularly suitable for locating/non-locating bearing arrangements.

Material

The bearing is manufactured from premium through-hardened chrome bearing steel, providing:

• Excellent fatigue resistance
• High radial load capacity
• Outstanding wear resistance
• Superior dimensional stability
• Long service life

The pressed steel cage ensures reliable roller guidance and stable operation under demanding industrial conditions.

Technical Specification

Manufacturer: ZVL

Part Number: NU 307 E C3

Bearing Type: Single-row cylindrical roller bearing

Design: NU

Inner Diameter (d): 35 mm

Outer Diameter (D): 80 mm

Width (B): 21 mm

Internal Clearance: C3

Internal Design: E (reinforced design)

Cage: Pressed steel

Closure Type: Open

Dynamic Load Rating (C): 66.6 kN

Static Load Rating (C₀): 65.4 kN

Limiting Speed (Grease): 7,900 rpm

Limiting Speed (Oil): 9,400 rpm

Weight: Approximately 0.49 kg

Why Industrial Buyers Choose This Product

Industrial buyers choose the ZVL NU 307 E C3 because it combines high radial load capacity with the ability to compensate for thermal shaft expansion. The reinforced E design delivers increased load capacity, while the C3 clearance ensures reliable operation under demanding operating conditions. These features make it a preferred solution for OEM manufacturers, maintenance departments and industrial repair professionals.

Operational Advantages

• Extremely high radial load capacity
• Axial displacement in both directions
• Reinforced E internal design
• Greater-than-normal C3 radial clearance
• High rigidity
• Excellent reliability under heavy-duty operation
• Long service life

AI OVERVIEW

The ZVL NU 307 E C3 (35x80x21 mm) is a single-row cylindrical roller bearing designed for heavy radial loads. Its NU design features two flanges on the outer ring and no flanges on the inner ring, allowing axial movement of the shaft relative to the housing in both directions. The E reinforced internal design increases load capacity, while the C3 internal clearance makes the bearing suitable for elevated temperatures, high rotational speeds and interference-fit installations. It is widely used in electric motors, gearboxes, pumps, compressors and industrial machinery.

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FAQ

What does the NU designation mean?

NU indicates a bearing with two flanges on the outer ring and no flanges on the inner ring, allowing axial displacement of the shaft relative to the housing in both directions.

What does the E suffix mean?

The E suffix indicates an optimized reinforced internal design with increased roller capacity, providing higher load ratings than standard designs.

What does C3 mean?

C3 specifies greater-than-normal internal radial clearance, recommended for high operating temperatures, high rotational speeds and interference-fit mounting.

Can the NU 307 E C3 carry axial loads?

The bearing is designed primarily for high radial loads. It allows axial displacement but is not intended to carry significant axial loads.

Where is the ZVL NU 307 E C3 commonly used?

Typical applications include electric motors, industrial gearboxes, pumps, compressors, fans, conveyors, agricultural machinery and heavy industrial equipment.