HM88638/HM88611 Tapered Roller Bearing Specifications
Bore d (mm)
31.987
Outer D (mm)
71.973
Width B (mm)
27
Dynamic rating Cr (kN)
71.1
Static rating Cor (kN)
94.2
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST HM88638/HM88611?
RUIST HM88638/HM88611 Tapered Roller Bearing: bore d = 31.987 mm, outer diameter D = 71.973 mm, width/height B = 27 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST HM88638/HM88611 carry?
Dynamic load rating Cr = 71.1 kN and static load rating Cor = 94.2 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST HM88638/HM88611 typically used?
Tapered Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST HM88638/HM88611 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 31.987 mm, OD 71.973 mm and width 27 mm match ISO dimensions, HM88638/HM88611 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.