Page 369 - MiSUMi FA Mechanical Components Economy Series

7
Economy Series
Quality Assurance Bearings

2 Features of MISUMI Economy series Bearings Rod End Bearings / Pivot Pins Bearings / Bearings With Housings /
Why are all MISUMI Economy series bearings tested for noise and vibration? And why do we insist on achieving "Z1" level?
Through the test of bearing noise and vibration, we can find out whether the bearing is defective. Bearing
vibration is divided into four levels: Z0, Z1, Z2, Z3 and Z4 (Higher level, Lower noise and vibration). Bearings

Noise and vibration specifications of Noise and Vibration Specifications
generic products in the market * of MISUMI Economy Series
P.365
D
Dimension Tolerance of I.D. and O.D., etc.ime
Clearance Toleranceearanle
C Housings Bearings With
R Cannot Can P.393
Roundness of Bearing Ballundnou
guarantee Z1
guarantee level or higher
Z1 level
R RailAccuracyofBearingInnerRingandOuterRingccuracyailA Lock Nuts Ball Bearing
S Scratchesinsidethebearing,andforeignmattersmixedinhesinsidecratch
P.395

Why do we insist on using "standard wall thickness" for MISUMI Economy series bearings? Screws Bearing Shaft
Wall thickness of generic products in the market Standard Wall Thickness for MISUMI Economy Series P.403

Steel Ball Shallow Rail The ballistic contact Steel Ball Deep Rail The ballistic contact P.405
surface is reduced and
area is large, and
Thinner Wall Thickness Bearing the contact stress is Standard Wall Thickness Bearing the contact stress is P.409
Bearings
Rod End
relatively dispersed,
relatively concentrated,
thus affecting the
thus prolonging the
service life.
service life.
Inner Ring
Pivot Pins
Inner Ring
Why do we insist on using "bearing steel" and "stainless steel" materials with excellent
performance for MISUMI Economy series bearings?
Material and difference for Material and difference for
generic products in the market * MISUMI Economy series

Normal steel on the market SUJ2 (Bearing Steel)
Heat Treatment Hardness 48~54HRC Heat Treatment Hardness 58~63HRC
No abrasion resistant More abrasion resistant
Bearing Steel Product 2Result After Test 2Result After Test
After service life test under After the long-term service
the same conditions as life test, there was little
MISUMI Economy series, the open end cover was wear inside the open end cover and the
severely worn inside and the structure was damaged. structure remains intact.

Normal stainless steel Equivalent to SUS440
on the market or SUS420
Stainless Steel Product
After the salt spray test, the After the salt spray test, the
rusted area was about 30% rusted area was about 2~3%
* Generic products in the market are similar products randomly purchased by our company from online or offline markets
* The test data are obtained through testing by our company, which are for reference only

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