Miniature Bearings Australia - MBA Minibearings
Miniature Bearings Australia

SMR74A-CSN-ZZS-ECO - Datasheet

ECO

Category Information

Bearings - Single Row Ball - Unflanged - Precision - Ceramic Hybrid

Ceramic Hybrid Precision Unflanged Single Row Ball Bearings. Steel Races with Si3N4 Ceramic Balls

  • Single row radial ball bearings are arguably the most common, widely used type of bearing. They consist of an inner ring, an outer ring, a set of balls, and a cage that retains the balls in a circular path.
  • Single row radial ball bearings are commonly used in a wide range of applications, including electric motors, fans, pumps, gearboxes, agricultural equipment, appliances, and automotive components.
  • They are versatile, cost-effective bearings that provide reliable support for radial loads and some axial loads in one direction. An expanded range may be available on special order. Please enquire.
  • Bearings with steel races and ceramic balls.
  • For standard bearings, the balls are usually one of the first components to show wear.
  • Ceramic balls are harder than steel and do not wear as easily.
  • Items with high speed cages have the suffixes T9H, TNH, TW or KC

Product Data

Ceramic balls.

  • ID (d) : 4.000 mm
    (Equiv. 0.157 in.)
  • OD (D) 7.000 mm
    (Equiv. 0.276 in.)
  • Width (B) 2.500 mm
    (Equiv. 0.098 in.)
  • Precision Grade Economy
  • Closure Type ZZS
  • Bearing Type Radial
  • Material Stainless Steel AISI 440C - Ceramic Si3N4 Balls
  • Lubrication Type Grease
  • Lubrication Name Standard Unspecified
  • Basic Part MR74A
  • Limiting Speed 57000
  • Cage Type Standard
  • Static Load Rating KGf 8.4
  • Dynamic Load Rating KGf 19.8
  • Radii 0.10 mm
  • Inner Shoulder (UI) 4.80mm
  • Outer Shoulder (UO) 6.30 mm
  • Number of Balls 11
  • Clearance ECO (5 to 23)
  • Precision Grade ECO
  • Closure Type ZZS
  • Max Temperature 120 Deg. C
Country of Origin: TW

Product Compliance and Data

Additional Resources

Cross References

  • Shielded Width A SMR74/2.5
  • Shielded SMR74A / 2
  • Similar Part SMR74A-CSN-ZZ-ECO
  • BOCA SMR74C-Y-ZZAF2
  • WML4007-ZZST
  • WML4007ZZST
  • SS-L740-ZZ
  • SSL740-ZZ
  • SSL740ZZ
  • DDL740ZZ
  • DDL740-ZZ
  • DD-L740-ZZ
  • SMR74CYZZAF2
  • ULZ407X
  • MR74A Basic Size Ref
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