NNU4888K/W33 Bearing Technical Specifications
- Dimensions
-
- Bore Diameter(d) 440 mm
- Outer Diameter (D) 540 mm
- Width(B) 100 mm
- Basic Load Rating
-
- Dynamic Load Rating (Cr) 1000 kN
- Static Load Rating (Cor) 3000 kN
-
- Weight 49 kg
- Main Dimensions
- 440mm × 540mm × 100mm
| ID | 440 mm | Inside diameter(I.D.) |
|---|---|---|
| OD | 540 mm | Outside diameter(O.D.) |
| B | 100 mm | Width |
| Cr | 1000 kN | Radial dynamic load rating |
| Cor | 3000 kN | Radial static load rating |
| Mass | 49 Kg | Weight |
- Brand
- WJY / OEM Available
- Origin
- Wafangdian, China (Global bearing manufacturing hub with 30+ years expertise)
- Precision Rating
- P0 (Standard) / P6 / P5 / P4 (Higher precision for demanding applications)
- Cage
- The default cage is stamped steel; Steel, Brass, and Machined Brass cages are optional, with other types not enumerated here.
- Material
-
- GCr15 Bearing Steel (Industry-standard for high load & fatigue resistance)
- GCr15SiMn
- GCr18Mo
- G20Cr2Ni4A
- Clearance
- C3 (standard), customizable to C0/C2/C4/C5
- Quality Standard
- ISO 9001:2015 Certified
NNU Series Double Row Cylindrical Roller Bearing NNU4888K/W33 is engineered for heavy-duty industrial applications with a bore range of 100-1500 mm. Two ribs on both outer rings and no rib on the inner ring, allowing bidirectional shaft movement. Outer ring is easily detachable for simplified maintenance. With 440 mm bore, 540 mm outer diameter, and 100 mm width, it supports 1000 kN dynamic load and 3000 kN static load ratings. It features special suffix: K and includes lubrication grooves and holes for continuous oil supply. Ideal for rolling mills, gearboxes, and large rotating machinery requiring high radial stiffness and durability. The manufacturer offers a Standard 12-month warranty extendable up to 18 months through authorized Jinyu distributors. OEM solutions available.
Delivery Time
- For in-stock own-brand bearings, Dalian JinYu HuaYang guarantees shipment arrangement within 3–5 days after payment confirmation.
- For OEM/ODM orders, the production and delivery lead time for a full container typically ranges from 20–35 days (depending on order complexity).
Shipping Methods
Ocean Freight/Land Transport
Warranty
We provide 12-month warranty, extendable to 18 months via authorized JinYu distributors.
Pricing Information
Bearing prices vary by precision grade, raw material quality, and market dynamics. For customized quotes, please submit an inquiry via our contact form.