TIMKEN Bearing NNU4980MAW33

Additional radial load-carrying capability compared to single-row product.
Designed to ISO/DIN specified interchangeable dimensions.
Sold as complete assembly.

NNU-1

Outer rings with solid ribs.
Lubrication grooves and holes on outer rings.
One solid brass cage.

The radial internal clearance (RIC) for the bearing assembly must be included when ordering the complete assembly.

Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of TIMKEN Bearing NNU4980MAW33

TIMKEN Bearing NNU4980MAW33

Specifications

Bore d

400 mm

Static Load Rating Co

3920000 N882000 lbf

Dynamic Load Rating C11

1710000 N384000 lbf

Geometry Factor Cg2

0.2570

Thermal Speed Ratings – Oil

600 rpm

Thermal Speed Ratings – Grease

530 rpm

Weight

202 lb

Bearing Dimensions

O.D. D

540 mm21.2598 in

Width B

140 mm5.5118 in

DUR/DOR F/E

446 mm17.5591 in

Mounting Data

Chamfer rsmin

4 mm0.16 in

Chamfer r1smin3

4 mm0.160 in

Backing Shaft Diameter ds

437 mm17.2000 in

Backing Housing Diameter Ds

504 mm19.8400 in

Lubrication Data

Lubrication Groove g

19.3 mm0.76 in

Lubrication Hole Diameter h

9.5 mm0.37 in

Number of Lubrication Holes

10

Dimension S4

7.10 mm0.280 in

Product description of TIMKEN Bearing NNU4980MAW33

TIMKEN Bearing NNU4980MAW33, It divided into Category: TIMKEN Bearing > Cylindrical Roller Bearings > Cylindrical Roller Radial Bearings - Two-Row.

Timken® two-row, or double-row, cylindrical bearings offer added radial capacity and are interchangeable. Dimensions and diameters under the rollers (NNU style) and over the rollers (NN style) meet ISO standards.

Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings.

Size range: 80 mm to 2000 mm OD

Design Attributes
Designed to ISO/DIN specified interchangeable dimensions where available.
Sold as complete assembly.
Available in same size range as single row product.
Current designs use NN, NNU nomenclature.
Standard cage design is a drilled pocket, finger-style bronze retainer.
Applications of Cylindrical Roller Radial Bearings - Two-Row TIMKEN Bearing NNU4980MAW33.
Gear Drives
Crop Shear
Rolling Mills
Machine Tools

As a global leader in bearings and power transmission systems, Timken focuses on precise solution design, materials and craftsmanship to deliver reliable and efficient performance that improves productivity and uptime. Timken offers a full range of bearings, gear drives, automated lubrication systems, belts, chains, couplings and linear motion products along with rebuild and repair services. Timken applies its proven expertise in metallurgy, tribology and mechanical power transmission to create innovative approaches to customers complex needs. Global availability of products and engineering talent, combined with exceptional service delivery across markets, makes Timken a preferred choice worldwide.

For more than a century, original equipment manufacturers have trusted Timken to design roller bearings for long-lasting performance in harsh industrial applications. That same innovation and engineering expertise has been applied to our expanded line of cylindrical roller bearings. Timken offers standard and specially designed cylindrical roller bearings in a wide range of configurations and series to meet your application requirements. This product offering includes single-, double- and four-row cylindrical roller bearings, as well as special configurations, in bore sizes ranging from 65 mm to 1,200 mm.

Timken’s full-complement cylindrical roller bearings offer increased power density and radial load carrying capacity by maximizing the number of rollers in a given envelope. The optimized design of our NCF series bearings helps to provide a greater design life and reduce heat generation – an essential benefit in full complement designs. PRODUCT ADVANTAGES: • Available in brass cage, steel cage and full-complement designs • Dimension-ally interchangeable industry-standard mounted bearings from 65 mm to 1,200 mm • High load carrying capacity resulting from proprietary profiles and optimized raceway surfaces • Smooth surfaces reduce friction and lower op

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