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Home>Products>Needle Roller Bearings>NA6903R NTN Needle Roller Bearings

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  • NA6903R  NTN Needle Roller Bearings
  • NA6903R  NTN Needle Roller Bearings

NA6903R NTN Needle Roller Bearings

  • NTN
  • NA6903R

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Wamei Industrial Manufacture Co.,Limited.

Wamei Industrial Manufacture Co.,Limited.China

  • Wamei Industrial Manufacture Co.,Limited.2020-07-10 09:46:19
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Product Description

NameNA6903RRNA6903RRNA6903
BrandNTNNTNCX
rs min0.3 mm
0.0118 in
0.3 mm
0.0118 in
s max1 mm
0.0394 in
Dw2.5 mm
0.0984 in
2.5 mm
0.0984 in
Lw17.8 mm
0.7008 in
17.8 mm
0.7008 in
Lubrication hole on outer ringOui/Yes Oui/Yes
k2 mm
0.0787 in
2.5 mm
0.0984 in
Lubrication hole on inner ringNon/No
Radial clearance classCN CN
Precision classP0 P0
Mass0.07 kg0.04 kg
Cr18.2 kN18.2 kN
C0r27.2 kN27.2 kN
Nlim (grease)12,000 rpm12,000 rpm
Nlim (oil)18,000 rpm18,000 rpm
Min operating temperature, Tmin-20 °C-20 °C
Max operating temperature, Tmax120 °C120 °C
Characteristic cage frequency, FTF0.45 Hz0.45 Hz
Characteristic rolling element frequency, BSF9.7 Hz9.7 Hz
Characteristic outer ring frequency, BPF03.82 Hz7.63 Hz
Characteristic inner ring frequency, BPFI4.68 Hz9.37 Hz
da min19 mm
0.748 in
Da max28 mm
1.1024 in
28 mm
1.1024 in
ras max0.3 mm
0.0118 in
0.3 mm
0.0118 in
Size (mm)17x30x23(mm)22x30x23(mm)22x30x23(mm)
Bore Diameter (mm)17(mm)22(mm)22(mm)
Outer Diameter (mm)30(mm)30(mm)30(mm)
Width (mm)23(mm)23(mm)23(mm)
d17 mm
0.6693 in
F22 mm
0.8661 in
D30 mm
1.1811 in
30 mm
1.1811 in
30 mm
1.1811 in
B23 mm
0.9055 in
C23 mm
0.9055 in
23 mm
0.9055 in
23 mm
0.9055 in
r min.0,3 mm
0.0118 in
0,3 mm
0.0118 in
s1 mm
0.0394 in
da min.19 mm
0.748 in
Da max.28 mm
1.1024 in
28 mm
1.1024 in
ra max.0,3 mm
0.0118 in
0,3 mm
0.0118 in
Weight0,069 Kg0,042 Kg0,042 Kg
Basic dynamic load rating (C)18,2 kN18,2 kN18,7 kN
Basic static load rating (C0)27,2 kN27,2 kN30,5 kN
(Grease) Lubrication Speed12 000 r/min12000 r/min12000 r/min
CategoryBearingsRoller Bearings
BDI Inventory0.00.0
Manufacturer NameNTNNTN
Minimum Buy QuantityN/AN/A
Weight / Kilogram0.0730.041
Product Group - BDIB04144B04144

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AddressNo. 10, Industrial South Road,Jinan,Shandong,China
Phone(Working Time)+86-15065923472
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  • Self Aligning Ball Bearings
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  • Angular Contact Ball Bearings
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