Timken NJ design · catalog page 62
NJ311ETP
Exact single-row metric cylindrical roller bearing record from Timken's July 2025 catalog.
Published bearing data
Dimensions and ratings
- Design
- NJ
- Roller-path diameter F/E
- 70.5 mm
- Static load rating C0
- 144 kN
- Dynamic load rating C1
- 139 kN
- Oil thermal speed
- 5,500 rpm
- Grease thermal speed
- 4,700 rpm
- Weight
- 1.53 kg
- Axial displacement s
- 1.8 mm
- Shaft backing diameter
- 65 mm
- Housing backing diameter
- 109 mm
- Geometry factor Cg
- 0.069
- Published row text
- 55.000 120.000 29.000 70.500 144 139 NJ311ETP 2.0 2.0 65.0 109.0 1.8 0.069 5500 4700 1.53
Verification boundary
What still needs to match
Internal clearanceTimken notes that radial internal clearance must be included when ordering the complete assembly.
Fits and tolerancesConfirm shaft/housing fits, backing diameters, chamfers, and applicable tolerance class.
Design and cageMatch the N/NJ/NU/NUP arrangement and exact suffix rather than relying only on boundary dimensions.
Operating conditionsCheck load direction, lubrication, speed, temperature, contamination, and axial displacement requirements.
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