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Images and technical specifications for item NF311.
PRODUCT INFORMATION
Description and selection guidance
NTN Bearing NF311 belongs to the Cylindrical Roller Bearings family. The technical tables below show the available dimensions, ratings, speeds and mounting limits for this item.
When requesting a quotation, provide the complete item number, required quantity and operating conditions so Cat Son can verify the configuration.
NF311 specifications
TECHNICAL SPECIFICATIONS
- Brand / Manufacturer
- NTN
- d - Shaft bore diameter
- 55 mm
- D - Diameter outside
- 120 mm
- B - Width
- 29 mm
- E - Upper roller diameter
- 106,5 mm
- F - Lower roller diameter
- 70,5 mm
- d1 - Diameter outside of flange IR
- 77,2 mm
- rNs - Minimum fillet radius
- 2 mm
- rs - Minimum fillet radius
- 2 mm
- Bearing clearance
- CN
PRODUCT PERFORMANCE
- C - Basic dynamic load rating
- 123 kN
- C0 - Basic static load rating
- 111 kN
- Cu - Fatigue load limit
- 13,6 kN
- N lim - Oil lubrication limiting speed
- 7600 tr/min
- N lim - Grease lubrication limiting speed
- 5300 tr/min
- Tmin - Minimum operating temperature
- -40 °C
- Tmax - Maximum operating temperature
- 120 °C
LIMITS
- da min - Minimum shoulder diameter IR
- 64 mm
- dc min - Diameter inner ring minimum GO
- 72 mm
- Da max - Maximum shoulder diameter OR
- 111 mm
- Db min - Diameter shoulder face minimum
- 108,5 mm
- ra max - Maximum fillet radius
- 2 mm
- r1a - Maximum fillet radius
- 2 mm
NTN ITEM SUPPORT
Send the current item and operating conditions.
Cat Son can compare dimensions, design and mounting conditions before quotation.
