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R31309-DY-XL
Tapered roller bearing
Tapered roller bearings without outer ring (Cone) 313, main dimensions to DIN ISO 355 / DIN 720
Product information
Metric
Imperial
Main Dimensions & Performance Data
d | 45 mm | Bore diameter |
B | 25 mm | Width, inner ring |
Cr | 106.000 N | Basic dynamic load rating, radial |
C0r | 100.000 N | Basic static load rating, radial |
Cur | 14.900 N | Fatigue load limit, radial |
nG | 8.700 1/min | Limiting speed |
nϑr | 4.550 1/min | Thermal speed rating |
≈m | 0,66 kg | Weight |
Mounting dimensions
da max | 56 mm | Maximum diameter of shaft shoulder |
db min | 54 mm | Minimum diameter of shaft shoulder |
CRa min | 6,3 mm | Minimum axial space |
CRb max | 0,2 mm | Maximum axial space |
ra max | 2 mm | Maximum fillet radius of shaft |
Dimensions
r1, 2 min | 2 mm | Minimum chamfer dimension of inner ring back face |
a | 30 mm | Distance between the apexes of the pressure cones |
d1 | 74,5 mm | Guidance rib diameter of inner ring |
T1 | 27,25 mm | Width, total of inner subunit assembled with a master outer ring |
E | 75,107 mm | Inside diameter of outer ring back face |
α | 28,81083 ° | Contact angle |
Temperature range
Tmin | -30 °C | Operating temperature min. |
Tmax | 120 °C | Operating temperature max. |
Calculation factors
e | 0,83 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
Y | 0,73 | Dynamic axial load factor |
Y0 | 0,4 | Static axial load factor |
Additional information
T7FB045 | Comparative designation to ISO 10317 and ISO 355 |
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Tolerance class | PN | Normal (ISO 492:2014) |
Heat treatment | Standard | |
Cage | Standard | Sheet steel cage, window cage, roller-guided |
Internal design | Standard | |
Quality level | XL | X-life |
Number of rolling element rows | 1 | Single-row design |
Characteristics