Page 781 - MiSUMi 2025

Economy series Product Overview Product Overview Economy series
Bearings Bearings

QFeatures of MISUMI Economy series Bearings
Economy series 1Why are all MISUMI Economy series Bearings tested for noise and vibration? And why do we insist on achieving "Z1" level?

Bearings 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)
Noise and vibration specifications Noise and vibration specifications
Applications of Economy series Bearings Dimension Tolerance of of generic products on the market * of MISUMI Economy series
I.D. and O.D., etc.
Low load: Bearings for transporting light workpieces Clearance Tolerance
Can
Medium and low speed rotation: Bearings suitable for guarantee 9
medium and low speed transferring equipment Roundness of Bearing Ball Cannot Z1
guarantee
Rail Accuracy of Bearing Inner Z1 level level or
higher
Medium precision rotation: Bearings that Ring and Outer Ring
do not require precise positioning Scratches inside the Bearing, Related Accessories Bearings / Bearings with Housings /
and foreign matters mixed in

QExample of Use
2Why do we insist on using "standard wall thickness" for MISUMI Economy series Bearings? Bearings

Wall thickness of generic products on the market* Standard wall thickness for MISUMI Economy series
QMISUMI Economy series Bearings:
P.09-007
Low Load Medium and Low Speed Rotation Medium Precision Rotation
……It is suitable for such applications Steel Ball The ballistic Steel Ball The ballistic
contact surface is Deep Rail contact area is Housings Bearings with
QThe recommended areas of use are as follows: Shallow Rail reduced and the large, and the
Workpiece Transfer contact stress is contact stress is
1Low load: Bearings for transporting light workpieces Application relatively relatively P.09-038
2Medium and low speed rotation: Bearings suitable for Thinner Wall Thickness concentrated, Standard Wall Thickness dispersed, thus
medium and low speed transferring equipment Workpiece Transfer thus affecting the prolonging the
Application
3Medium precision rotation: Bearings that do not require Bearing service life. Bearing service life. Lock Nuts Bearing
precise positioning Inner Ring Inner Ring
P.09-081

3Why do we insist on using "bearing steel" and "stainless steel" materials with excellent Bearing Spacers Bearing Shaft Screws /
performance for MISUMI Economy series Bearings?
Material and difference for generic Material and difference for P.09-086
QPrecautions of Selection products on the market* MISUMI Economy series

· Differences in specifications between MISUMI Standard product Bearings (B6901ZZ) and MISUMI Normal steel on the market SUJ2 (Bearing Steel) (Bearing Related) Other New Products
Economy series Bearings (C-E6901ZZ) Heat Treatment Hardness Heat Treatment Hardness
48~54HRC Not abrasion 58~63HRC More abrasion
resistant resistant P.09-090
MISUMI Standard product Bearings MISUMI Economy series Bearings Bearing Steel Product
QResult After Test QResult After Test
After service life test under After the long-term service life
Basic Dynamic Rated Load (Cr): 2.89kN Basic Dynamic Rated Load (Cr): 2kN
Basic Load Capacity the same conditions as test, there was little wear inside
Basic Static Rated Load (Cor): 1.46kN Basic Static Rated Load (Cor): 1kN MISUMI Economy series, the open end cover was the open end cover and the structure remains intact.
Basic Rated Life ▲ 1 million rotations Basic Rated Life ▲ 400,000 rotations severely worn inside and the structure was damaged.
(With 2.89kN load applied) (With 2kN load applied)
Lifetime Normal stainless steel on the Equivalent to SUS440 or SUS420
EX: Specific example ▲ 4000 hours EX: Specific example 1600 hours Stainless Steel Product market After the salt spray test, the rusted
▲
(When rotating at speed of 750rpm and load of 0.5kN) (When rotating at speed of 750rpm and load of 0.5kN) After the salt spray test, the area was about 2~3%
rusted area was about 30%
Bearing Internal
Clearance Minimum: 3μm Maximum: 13μm Minimum: 6μm Maximum: 23μm * Generic products on the market are similar products randomly purchased by MISUMI from the market
* The test data are obtained through testing by MISUMI, which are for reference only
09-008