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Tapered Roller Bearings 31300 Series

Basic Info

Model No.31300 Series

Rolling BodyRoller Bearings

The Number of RowsSingle

Additional Info

Payment TypeL/C,T/T

IncotermFOB,CFR,CIF

Product Description

The Tapered Roller Bearings 31300 Series are generally mounted in pairs in a manner similar to single-row Angular Contact Ball Bearings. In this case, the proper internal clearance can be obtained by adjusting the axial distance between the cones or cups of the two opposed bearings.

The constructional shape of thePrecision Tapered Roller Bearings 31300 Series makes them especially suitable for combined loads (radial and axial). They always have to be pack-mounted, with or without pre-load, because continuous contact of the relevant rolling elements has to be guaranteed.

Precision Tapered Roller Bearings 31300 Series


Bearing features

Low friction 
The optimized roller end design and surface finish on the flange promote lubricant film formation, resulting in lower friction. This also reduces frictional heat and flange wear. In addition, the bearings can better maintain preload and run at reduced noise levels. 
Long service life 
The crowned raceway profiles of basic design bearings and the logarithmic raceway profiles of SKF Explorer bearings optimize the load distribution along the contact surfaces, reduce stress peaks at the roller ends, and reduce the sensitivity to misalignment and shaft deflection compared with conventional straight raceway profiles. 
Enhanced operational reliability 
Optimized surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film. 
Consistency of roller profiles and sizes 
The rollers incorporated in SKF tapered roller bearings are manufactured to such close dimensional and geometrical tolerances that they are practically identical. This provides optimal load distribution, reduces noise and vibration, and enables preload to be set more accurately. 
Rigid bearing application 
A single row tapered Roller Bearing is typically adjusted against a second tapered roller bearing. By applying a preload, a rigid bearing application can be achieved. 
Running-in period with reduced temperature peaks 
Tapered roller bearings typically have a running-in period, during which a conventional design tapered roller bearing experiences a significant amount of friction, resulting in wear. This effect is noticed as a temperature spike. With SKF tapered roller bearing designs, friction, frictional heat and wear are significantly reduced, provided the bearings are mounted and lubricated correctly.
Separable and interchangeable 
Depending on the design, tapered roller bearings are separable and components of same-sized bearings are fully interchangeable. For example, single row tapered roller bearings are separable, i.e. the inner ring with roller and cage assembly (cone) can be mounted separately from the outer ring (cup). This facilitates mounting, dismounting and also maintenance inspection routines. 
Taper Roller Bearings 31300 Series


Designation Principal dimensions Basic load ratings(KN) Pu Speed ratings Weight 
d1 D B dyc  stc  Speed Ratings Limiting Speed
(mm) Cr Cor (rpm) (kg)
31305J2 25 62 18,25 38 40 4,4 7500 11000 0,26
31306J2/Q 30 72 20,75 55 50 5,7 7500 9500 0,39
31307J2/Q 35 80 22,75 71 67 7,8 6300 8500 0,52
31308J2/QCL7C 40 90 25,25 85 81,5 9,5 5600 7500 0,72
31309J2/QCL7C 45 100 27,25 106 102 12,5 5000 6700 0,95
31310J2/QCL7C 50 110 29,25 122 120 14,3 4500 6000 1,20
31311J2/QCL7C 55 120 31,5 140 137 16,6 4300 5600 1,55
31312J2/QCL7C 60 130 33,5 166 166 20,4 3800 5300 1,90
31313J2/QCL7C 65 140 36 190 193 23,6 3600 4800 2,35
31314J2/QCL7C 70 150 38 216 220 27 3400 4500 2,95
31315J2/QCL7C 75 160 40 240 245 29 3200 4300 3,50
31316J1/QCL7C 80 170 42,5 260 265 32 3000 4000 4,05
31317J2 85 180 44,5 242 285 33,5 2600 3800 4,60
31318J2 90 190 46,5 264 315 36,5 2400 3400 5,90
31319J2 95 200 49,5 292 355 39 2400 3400 6,95
31320XJ2 100 215 56,5 430 465 51 2400 3000 8,60
31322XJ2 110 240 63 457 585 62 1900 2800 12,0
31324XJ2 120 260 68 539 695 73,5 1700 2400 15,5
31326XJ2 130 280 72 605 780 81,5 1600 2400 18,5
31328XJ2 140 300 77 693 900 88 1500 2200 24,5
31330XJ2 150 320 82 781 1020 100 1400 2000 29,5

Product Categories : Roller Bearings > Tapered Roller Bearings

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  • Tapered Roller Bearings 31300 Series
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