NNU4952-S-K-M-SP With Size 260x360x100 mm Super Precision Double Row Cylindrical Roller Bearing
Overview
NNU49..-S-K-M-SP super precision double row cylindrical roller bearings;It is cylindrical bore, separable, Non-locating bearings; Outer ring with three rigid ribs, inner ring without ribs, lubrication groove and lubrication holes in the outer ring, brass double comb cage.
Suffix meaning
M-Brass Cage
SP-Tolerance class SP
K-Tapered, taper 1:12
S-Lubrication holes and lubrication groove in the outer ring
C1-Internal clearance smaller than C2
Bore diameter-260 mm; Outside diameter-360 mm; Width-100 mm; Mass-40 kg; Cr=750 kN; C0r=1690 kN; Limiting speed for grease lubrication is 2070 1/min; Limiting speed for oil lubrication is 2430 1/min.
Specifications
| Dimensions &Technical Datasheets | |
| Part NO. | NNU4952-S-K-M-SP-Super Precision Double-Row Cylindrical Roller Bearings |
| Brand | FAG made in Germany, and SDVV brand made in China |
| Main Dimensions | 260x360x100 mm |
| d | 260 mm |
| D | 360 mm |
| B | 100 mm |
| Limiting speed for grease lubrication | 2070 1/min |
| Limiting speed for oil lubrication | 2430 1/min |
| da | 289.4 mm |
| Da | 334 mm |
| r1 min | 2.1 mm |
| Cr | 750 kN |
| C0r | 1690 kN |
| M | 40 kg |
Applications
Machine Tool Manufacturing: Machine tool spindles, coaxial reducers, deep hole drilling machines - Supports spindle rotation, ensuring machining accuracy and stability.
Heavy Machinery: Rolling mill bearings, heavy-duty presses, universal testing machines - Withstands extremely high radial and impact loads.
Energy and Power: Gas turbines, vortex pumps, centrifugal compressors - Maintains reliable performance under high-speed operation.
Engineering and Construction: Tower cranes, piling machinery, traction and straightening equipment - Provides stable support under complex working conditions.
Packaging and Printing: Flexographic printing machines, aluminum-plastic packaging machines, roller welding machines - Precision transmission, ensuring continuous production.
Chemical Equipment: Tank reactors, pipeline pumps, condensers - Stable operation in corrosive environments.
Food and Pharmaceutical: Automatic welding machines, beverage production equipment, pharmaceutical equipment - Meets cleanliness and high reliability requirements.
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