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Images and technical specifications for item NA4909R.
PRODUCT INFORMATION
Description and selection guidance
NTN Bearing NA4909R belongs to the Needle 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.
NA4909R specifications
TECHNICAL SPECIFICATIONS
- Brand / Manufacturer
- NTN
- d - Shaft bore diameter
- 45 mm
- D - Diameter outside
- 68 mm
- C - Width
- 22 mm
- F - Lower roller diameter
- 52 mm
- rs - Minimum fillet radius
- 0,6 mm
- s - Độ lệch shaft maximum
- 1 mm
- Outer-ring lubrication holes
- Oui/Yes
- k - Diameter of lubrication hole
- 3 mm
- Hole bôi trơn over inner ring
- Non/No
- Bearing clearance
- CN
- Precision class
- P0
- Weight
- 0,27 kg
PRODUCT PERFORMANCE
- Cr - Dynamic load rating
- 46 kN
- C0r - Static load rating
- 73 kN
- N lim - Grease lubrication limiting speed
- 5000 tr/min
- N lim - Oil lubrication limiting speed
- 7500 tr/min
- Tmin - Minimum operating temperature
- -20 °C
- Tmax - Maximum operating temperature
- 120 °C
LIMITS
- da min - Minimum shoulder diameter IR
- 49 mm
- Da max - Maximum shoulder diameter OR
- 64 mm
- ras max - Maximum fillet radius
- 0,6 mm
NTN ITEM SUPPORT
Send the current item and operating conditions.
Cat Son can compare dimensions, design and mounting conditions before quotation.
