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NTN Cylindrical Roller Bearing: Metric, 52100 Ring Material Grade, Steel, Open, NU311 Bearing Trade, 55 mm Bore Dia

Item # 714K698

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Product Specs

Measurement System: Metric
Ring Material Grade: 52100
Ring Material: Steel
Closure: Open
Bearing Trade Number: NU311
Bore Diameter: 55 mm
OD: 120 mm
Width: 29 mm
Dynamic Load Capacity: 30,798.8 lb
Maximum Speed: 6,300 RPM
Maximum Operating Temperature: 250 ° F
Precision Rating: ABEC 1
Application: Electric Motor; Gear Boxes; Machine Tool; Compressors
Bearing Finish/Coating: Uncoated
Bearing Full Designation Number: NU311EG1C3
Bearing Series: NU300
Bore Diameter Tolerance: +0.000 mm/-0.015 mm
Bore Shape: Cylindrical
Cage Material: Machined Brass
Dynamic Radial Load Capacity: 30,798.8 lb
Fillet Radius: 2 mm
Full Complement: No
High Speed: Good
Load Direction: Radial
Lubrication: Oil; Grease
Lubrication Distribution Features: No Lubrication Grooves or Holes
Minimum Operating Temperature: -40 ° F
Number of Roller Rows: 1
OD Tolerance: +0/-0.025 mm
Outer Ring Retaining Slots: No
Radial Internal Clearance: C3
Radial Loads: Good
Retaining Ring Groove: No
Retaining Ring Included: No
Ring Separation: Separable Inner Ring
Roller Material: Steel
Roller Material Grade: 52100
Roller Retainer: Cage
Rolling Element Type: Cylindrical
Split Bearing: No
Static Load Capacity: 32,147.6 lb
Static Radial Load Capacity: 32,147.6 lb
Manufacturer Part Number: NU311EG1C3

Compliance and Restrictions

Country Of Origin

  • Japan

About Cylindrical Roller Bearings

These cylindrical roller bearings contain cylinder-shaped rolling elements that glide between raceways on the inner and outer rings. They are recommended for applications with heavy radial loads (where the load is perpendicular to the shaft) and low to moderate axial, or thrust, loads (where the load is parallel to the shaft). Double-row bearings act like a pair of back-to-back single-row bearings, and can support axial loads in two directions.

Roller bearings use cylindrical rolling elements that distribute loads over a wide surface area, which allows roller bearings to tolerate higher loads than ball bearings. To ensure proper functioning, bearings should be lubricated regularly.