NNU4156 Technical Specifications
| Bearing Type | Double Row Cylindrical Roller Bearings |
|---|---|
| d (ID) | 280mm |
| D (OD) | 460mm |
| B (Width) | 180mm |
| Dynamic Load (Cr) | 2500kN |
| Static Load (Cor) | 4700kN |
| Mass | 118Kg |
| Material | High-carbon chromium bearing steel (GCr15 / 52100 equivalent) |
| Cage | Precision-machined brass cage |
| Clearance | C3 clearance |
| Precision | P0 / Normal grade |
Product Description
NNU4156 is a double row cylindrical roller bearing with dimensions of 280×460×180 mm. It features flanges on the outer ring and is designed for high radial loads and precise shaft guidance. The NNU41 series is designed for extremely heavy radial loads and large rotating equipment.
Key Features
- Outer ring rib design provides excellent rigidity and radial guidance.
- High running accuracy for precision applications.
- Low friction and high-speed capability.
- Suitable for machine tool spindle and precision equipment applications.
Applications
- Machine tool spindles
- Grinding machines
- Machining centers
- Precision machine tools
- Industrial gearboxes
- Rolling mill equipment
What is the difference between NNU and NN bearings?
NNU series bearings have flanges on the outer ring, while NN series bearings have flanges on the inner ring. Both are double row cylindrical roller bearings designed for high radial loads and precision applications.
Can NNU4156 be supplied with a tapered bore?
Yes. Depending on the bearing design and application requirements, tapered bore versions (K suffix, 1:12 taper) may be available or can be manufactured upon request. Contact us for availability and technical support.
Delivery & Service
Delivery Time
In-stock items: 3–5 working days; Bulk orders: 7–15 working days.
Shipping
Ocean Freight / Land Transport
Warranty
12-month warranty, extendable to 18 months.
Loading Port
Dalian Port or other nominated port
Packing
Export packing: tube + box + carton + wooden case
Order
Mixed models & small orders welcome
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