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Images and technical specifications for item 4T-30308D.
PRODUCT INFORMATION
Description and selection guidance
NTN Bearing 4T-30308D belongs to the Tapered 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.
4T-30308D specifications
TECHNICAL SPECIFICATIONS
- Brand / Manufacturer
- NTN
- d - Shaft bore diameter
- 40 mm
- D - Diameter outside
- 90 mm
- B - Width
- 23 mm
- C - Outer-ring width
- 17 mm
- T - Overall width
- 25,25 mm
- d1 - Inner-ring outside diameter
- 67 mm
- a - Load application point
- 29,5 mm
- rs - Minimum fillet radius
- 2 mm
- r1s - Minimum fillet radius
- 1,5 mm
- Weight
- 0,727 kg
- ISO 355 refethreadce
- T7FB040
PRODUCT PERFORMANCE
- C - Basic dynamic load rating
- 85,5 kN
- C0 - Basic static load rating
- 85,5 kN
- Cu - Fatigue load limit
- 10,4 kN
- A2 - Rated-life factor
- 1
- e - Limiting value
- 0.83
- Y0 - Static axial load factor
- 0.4
- Y2 - Upper axial load factor
- 0.73
- N lim - Oil lubrication limiting speed
- 5200 tr/min
- N lim - Grease lubrication limiting speed
- 3900 tr/min
- Tmin - Minimum operating temperature
- -40 °C
- Tmax - Maximum operating temperature
- 120 °C
LIMITS
- da max - Maximum shoulder diameter IR
- 50 mm
- db min - Minimum shoulder diameter IR
- 50 mm
- Da min - Minimum shoulder diameter OR
- 71 mm
- Da max - Maximum shoulder diameter OR
- 81,5 mm
- Db min - Minimum shoulder diameter OR
- 107 mm
- Ca - Minimum space width
- 3 mm
- Ca - Minimum space width
- 8 mm
- ra max - Maximum fillet radius
- 2 mm
- r1a - Maximum fillet radius
- 1,5 mm
NTN ITEM SUPPORT
Send the current item and operating conditions.
Cat Son can compare dimensions, design and mounting conditions before quotation.
