BNUP3681224/2RZ
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- Bore Diameter(d) 180 mm
- Outer Diameter(D) 406.4 mm
- Width(B) 224 mm
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- Dynamic Load Rating(Cr) 2360 kN
- Static Load Rating(Cor) 4250 kN
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- Weight 170 kg
- Main Dimensions
- 180mm × 406.4mm × 224mm
- Bearing Type
- Backing Bearings
| Basic Information | ||
|---|---|---|
| Design No. (Model) | 1 | Design identification number or model code |
| Weight (Mass) | 170 kg | Mass (M) of the bearing, measured in kilograms (kg) |
| Boundary Dimensions (mm) | ||
| d (Inner Diameter) | 180 mm | Internal diameter of inner ring (ISO standard symbol: d) |
| D (Outer Diameter) | 406.4 mm | External diameter of outer ring (ISO standard symbol: D) |
| B (Width) | 224 mm | Overall width of bearing (ISO standard symbol: B) |
| C (Effective Width) | 223 mm | Effective width of roller set (ISO standard symbol: C) |
| H (Height) | 113.2 mm | Overall height of bearing assembly |
| d1 (Inner Step Diameter) | 230 mm | Diameter of inner ring step for axial location |
| D1 (Outer Step Diameter) | 331 mm | Diameter of outer ring step for housing fit |
| E (Mounting Dimension) | 298.5 mm | Effective bearing center distance for mounting |
| F (Positioning Dimension) | 214.5 mm | Axial positioning dimension for bearing seats |
| rmin (Chamfer Radius) | 3 mm | Minimum fillet radius for chamfered edges |
| K (Roller Factor) | 8 | Factor for effective roller length calculation |
| N* (Roller Quantity) | 6 | Number of rollers in bearing assembly |
| Basic Load Rating (kN) | ||
| Cr (Dynamic Load) | 2360 kN | Basic dynamic load rating (ISO 281) |
| Cor (Static Load) | 4250 kN | Basic static load rating (ISO 281) |
| Cr (Roller) | 1710 kN | Dynamic load rating for roller elements |
| Cor (Roller) | 2990 kN | Static load rating for roller elements |
| Cr (Radial Max) | 1150 kN | Maximum radial dynamic load capacity |
| Cor (Radial Max) | 1620 kN | Maximum radial static load capacity |
Superior Material & Durability
Manufactured from premium G20Cr2Ni4A carburized steel with advanced heat treatment:
- Carburized layer depth ≥2.0mm
- Surface hardness HRC60-64
- Core toughness HRC30-40
- 40% longer service life
P4-Grade Precision Engineering
Meets ISO P4/ABEC 9 standards:
- Dimensional tolerance ±2μm
- Roundness error ≤0.5μm
- Cylindricity error ≤1μm
- Surface roughness Ra≤0.025μm
- 30% reduced friction
Rigorous Quality Control
- ISO 9001 certified manufacturing
- Full dimensional inspection reports
- Hardness gradient testing
- Dynamic performance evaluation
- 100% factory inspection
Typical Applications
Metal Processing & Steel Industry
- Hot/cold rolling mill support bearings
- Ladle turret bearings
- Coiler/straightener machine bearings
Mining Equipment
- Crusher bearings
- Ball mill bearings
- Mining drill bearings
Construction Machinery
- Excavator slewing bearings
- Crane bearings
- Port machinery bearings
Power Generation
- Industrial turbine bearings
- Wind turbine gearbox bearings
- Hydroelectric generator bearings
BNUP Series Backing Bearing BNUP3681224/2RZ. BNUP series backing bearing, with its unique structural design, providing stable support and load - carrying capacity. Inner diameter: 180mm, inner diameter within 100 - 200mm, suitable for medium - sized mechanical equipment with corresponding installation space requirements. Precision grade: precision grade P4, ensuring high - accuracy rotational performance for applications requiring strict running accuracy. Material: made of G20Cr2Ni4A material, featuring excellent wear resistance, toughness and fatigue strength, suitable for harsh working conditions. It can provide reliable backing support in relevant mechanical equipment, ensuring stable operation under corresponding loads and working conditions. The manufacturer offers a Standard 12-month warranty extendable up to 18 months through authorized Jinyu distributors. OEM solutions available.
- Precision Rating
- P0 (Standard) / P6 / P5 / P4 (Higher precision for demanding applications)
- Cage
- Material
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- GCr15 Bearing Steel (Industry-standard for high load & fatigue resistance)
- GCr15SiMn
- GCr18Mo
- G20Cr2Ni4A
- Clearance
- C3 (standard), customizable to C0/C2/C4/C5
- Brand
- WJY / OEM Available
- Origin
- Wafangdian, China (Global bearing manufacturing hub with 30+ years expertise)
- Quality Standard
- ISO 9001:2015 Certified
- Delivery Time
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- 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 for all our products.
- Pricing Information
- Bearings prices vary based on precision grade, raw materials, and market factors. For customized quotes, please submit an inquiry.