The projection lines of the raceways meet at a common point on the bearing axis (apex point A fig 2) to provide a true rolling action and therefore low frictional moments during operation The axial load carrying capacity of tapered roller bearings increases with increasing contact angle α The size of the contact angle which
d 479425 mm D 71755 mm T 136525 mm d1 ≈ 596 mm B 130175 mm C 109537 mm r12 min 64 mm r34 min 64 mm a 127 mm Abutment dimensions da max 542 mm db min 512 mm Da min 640 mm Da max 685 mm Db min 679 mm Ca min 18 mm Cb min 265 mm ra max 6 mm
Principal dimensions Basic load ratings Fatigue load limit Speed ratings Designation dynamic static Reference speed Limiting speed d D T C C0 Pu mm kN kN r/min 15 35 1175 185 146 143 17000 20000 ▻ 30202 15 42 1425 277 20 208 15000 18000 ▻ 30302 15 34988 10998
