MR74ZZ Deep Groove Ball Bearing Specifications
Bore d (mm)
4
Outer D (mm)
7
Width B (mm)
2.5
Dynamic rating Cr (kN)
0.28
Static rating Cor (kN)
0.107
Grease limit speed (r/min)
60000
Oil limit speed (r/min)
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Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST MR74ZZ?
RUIST MR74ZZ Deep Groove Ball Bearing: bore d = 4 mm, outer diameter D = 7 mm, width/height B = 2.5 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST MR74ZZ carry?
Dynamic load rating Cr = 0.28 kN and static load rating Cor = 0.107 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST MR74ZZ typically used?
Deep Groove Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST MR74ZZ replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 4 mm, OD 7 mm and width 2.5 mm match ISO dimensions, MR74ZZ is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.