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.
| Bore d |
400 mm |
| Static Load Rating Co |
9460000 N2120000 lbf |
| Dynamic Load Rating C11 |
5530000 N1240000 lbf |
| Geometry Factor Cg2 |
0.2880 |
| Thermal Speed Ratings – Oil |
410 rpm |
| Thermal Speed Ratings – Grease |
390 rpm |
| Weight |
716.000 lb |
TIMKEN Bearing NNU4180MAW33, 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 NNU4180MAW33.
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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