+84 28 3820 8888 
Images and technical specifications for item 81228.
PRODUCT INFORMATION
Description and selection guidance
NTN Bearing 81228 belongs to the Cylindrical Roller Thrust 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.
81228 specifications
TECHNICAL SPECIFICATIONS
- Brand / Manufacturer
- NTN
- d - IR-WS support-washer bore diameter
- 140 mm
- D - Washer outside diameter support OR - GS
- 200 mm
- d1 - IR-WS support-washer outside diameter
- 197 mm
- D1 - OR-GS housing-washer bore diameter
- 143 mm
- T - Height bearing thrust
- 46 mm
- Dw - Rolling-element diameter
- 19 mm
- Dc1 - Roller-cage bore diameter
- 140 mm
- Dc - Roller-cage outside diameter
- 200 mm
- B - Ring thickness
- 13,5 mm
- rs - Minimum fillet radius
- 1,5 mm
- Cage assembly reference
- K81228
- Bearing inner ring WS
- WS81228
- Bearing outer ring GS
- GS81228
- Ea - Roller reference outside diameter
- 189 mm
- Eb - Roller reference inside diameter
- 150,1 mm
- Weight
- 4,57 kg
- Cage assembly weight
- 1,2 kg
- Bearing inner ring mass WS
- 1,69 kg
- Bearing outer ring GS mass
- 1,69 kg
- Precision class
- P0
PRODUCT PERFORMANCE
- Ca - Dynamic axial load rating
- 370 kN
- C0a - Static axial load rating
- 1280 kN
- Cua - Axial load limit
- 133 kN
- N lim - Grease lubrication limiting speed
- 350 tr/min
- N lim - Oil lubrication limiting speed
- 1400 tr/min
- Tmin - Minimum operating temperature
- -20 °C
- Tmax - Maximum operating temperature
- 120 °C
LIMITS
- da min - Minimum shoulder diameter IR
- 188 mm
- Db max - Maximum shoulder diameter OR
- 150 mm
- ras max - 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.
