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Stainless Steel Sieves - Metal Wire Cloth TypeTest Sieves JIS Z 8801 Standard

Metal Wire MeshAccording to the JIS standard, the metal wire mesh of sieves is defined such that each metal wire shouldcross vertically, shaping a regular square as the aperture for screens (ﬂat weave). When one side of the square(aperture) is less than 45 μm, the mesh may be woven into twill by wires (twill weave). To comply with the JISstandard, Tokyo Screen embraces two types of wire cloth: (1) ﬂattop weave when the aperture is over 2.36 mm,and (2) twill weave when the aperture is less than 38 μm.

● Flattop Weave Mesh

● Flat Weave Mesh

WireDiameter

Aperture

WireDiameter

WireDiameter

Aperture

Flattop weave is used for screeninglarge and middle-size particles. Thesurface of the mesh is designed to beﬂat and smooth.

● Twill Weave Mesh

WireDiameter

WireDiameter

Aperture

Aperture

WireDiameter

Aperture

Flat weave mesh is basic as each wirecrosses vertically to keep the aperturesquares stable in the screen. Thisstandard cross enables accurate andeﬀective screening.

Frame of Sieves

Aperture

Twill weave mesh is structured bycrossing two parallel wires with eachother in one uneven pattern. The meshis woven using thick wires and is goodfor screening small particles.

φD1

Cross-section of SievesFrame

Metalwire cloth

H1

t1 Upper Framet2 Bottom Frame

φD2

Scale and Tolerance of Test SievesNominal frame sizeD1Diameter or length of Eﬀective sieving surface

Depth

Frame plate Thickness

Minimum

Maximum

H1

t1 Upper Frame

t2 Bottom Frame＋ 0.6300 − 0.7− 0.1285300

100 or 60

0.61.0200＋ 0.60200− 0.1− 0.7185200100, 60, 45, or 25

0.61.0150＋ 0.60150− 0.1− 0.7135150

60, 45, or 250.61.075＋ 0.6075− 0.1− 0.765

75

200.40.4300 02D2

Unit：㎜

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Capable of Issuing CalibrationCertiﬁcates of ISO/IEC 17025Stainless Steel Sieves - Metal Wire Cloth TypeTokyo Screen manufactures all sieve products with alead-free process in compliance with the Restriction ofHazardous Substances (RoHS).
Table 1

Aperture Size of Metal Wire Cloth and Wire Diameter

Nominal Aperture ａｗPrincipal125906345

31.522.41611.28

5.64

2.82

1.41

Supplementary

ToleranceMaximum Aperture Average Aperture

Unit：㎜Wire Diameter

Maximum standarddeviation

Preferred

Maximum

Minimum

σ0ｄ nomｄ max

ｄ min＋Ｘ

±Ｙ

125

4.51

3.66

8

9.26.8106

3.99

3.12

6.37.25.490

3.53

2.66

6.37.25.475

3.09

2.22

6.37.25.463

2.71

1.87

5.66.44.853

2.39

1.58

5

5.84.345

2.12

1.35

1.000

4.55.23.837.51.85

1.13

1.000

4.55.23.831.51.63

0.95

1.000

4

4.63.426.51.44

0.81.000

3.55

4.13

22.41.27

0.68

0.920

3.55

4.13

19

1.13

0.58

0.729

3.15

3.62.716

0.99

0.49

0.610

3.15

3.62.713.20.86

0.41

0.506

2.83.22.411.20.77

0.35

0.430

2.52.92.19.50.68

0.30.372

2.24

2.61.98

0.60.250.315

22.31.76.70.53

0.21

0.269

1.82.11.55.60.47

0.18

0.235

1.61.91.34.75

0.41

0.15

0.199

1.61.91.34

0.37

0.13

0.175

1.41.71.23.35

0.32

0.11

0.151

1.25

1.51.06

2.80.29

0.09

0.130

1.12

1.30.95

2.36

0.25

0.08

0.114

1

1.15

0.85

2

0.23

0.07

0.105

0.91.04

0.77

1.70.20.06

0.087

0.80.92

0.68

1.40.18

0.05

0.076

0.71

0.82

0.61.18

0.16

0.04

0.067

0.63

0.72

0.54

1

0.14

0.03

0.059

0.56

0.64

0.48

ｂ

Notice: The above aperture sizes are based on the ﬂat weave. For an aperture less than 45 ㎛ , the twill weave mesh may beincluded, so please keep in mind the functional diﬀerences in these two weaves.
ａ … The aperture sizes are listed in Table 2 of the ISO 565:1990 Standards (see columns R20/3 and R40/3).

4Capable of Issuing CalibrationCertiﬁcates of ISO/IEC 17025Please see p. 3 for data on the sieve scales.
Table 2

Aperture Size of Metal Wire Cloth and Wire DiameterTolerance

Nominal Aperture ａｗPrincipal710500355250180125906345

Wire DiameterStandardMaximum Aperture Average Aperture MaximumdeviationSupplementary＋Ｘ±Ｙσ08501272952.27101122545.86001012140.5500891835.9425811632.2355721328.2300651225.4250589.922.4212528.720180477.618150436.616.3125385.814.4106355.213.290324.61275294.110.963263.79.953243.4
945223.18.338202.97.7R'10322520

1916142.72.52.3Unit：㎛

6.86.15.7Preferred

Maximum

Minimumｄ nom5004504003152802242001601401251009071635045363230

ｄ max58052046036032026023019017015011510482725852413735ｄ min430380340270240190170130120106857760544338312724282520332923232117

Notice: The above aperture sizes are based on the ﬂat weave. For an aperture less than 45 ㎛ , the twill weave mesh may beincluded, so please keep in mind the functional diﬀerences in these two weaves.
ａ … The aperture sizes are listed in Table 2 of the ISO 565:1990 Standards (see the columns R20/3 and R40/3).

Table 3

Aperture Size of Metal Wire Cloth and Wire DiameterToleranceStandardMaximum Aperture Average Aperture MaximumdeviationSupplementary＋Ｘ±Ｙσ0

Nominal Aperture ａｗPrincipal

Wire DiameterPreferredMaximum

Minimumｄ nomｄ maxｄ minUnit：㎜0.68Unit：㎛956048

1.61.19

0.05

0.082

0.80.92

16010080

4434306.9
54.316.812.811.31127256

1308264ａ … The aperture sizes are listed in Table 2 of the ISO 565:1990 Standards (see the columns R20/3 and R40/3).

Sieves for Medical UseCertiﬁcated by the JapanesePharmacopoeia (15th Revision)The Japanese Pharmacopoeia designates sieves for medicaluse under the JIS Z 8801 standard. Tokyo Screen's productscomply with the standard. The table on the right shows anextract of the contents from the standard.

Degree of Cutting and Fineness of PowderNo.
1234567Sieve No.
4.06.58.61850100200NameCoarse CuttingMedium CuttingFine CuttingCoarse PowderMedium PowderFine PowderVery Fine Powder

Aperture4.75㎜2.80㎜2.00㎜850㎛300㎛150㎛75㎛

567Micro Screen Sieves - Electroformed SheetMicro Screen Sieve / FilterPhotos: Round Hole Aperture (10 μm Diameter)

Super-High Accuracy・Tolerance of Aperture ±0.5 μm・Maximum Tolerance per Sheet ±0.5 μm（＊Ordinary Case: ±1.0 μm）

Super-High Flow Rate・Crevice Pitch・From 2.3 to 4.8 Times as High as theOrdinary Flow Rate→From 2.3 to 6.9 Times inConverting into the Number of HolesSuper-High Strength・Three Times as Thick as the Ordinaries・No Damage during 28/45 kHz Ultrasonic CleaningPoint 1 - Super-High AccuracyApertureMeasuringPoints

Point 2 - Super-High Flow RateTokyo Screen

Measuring Results(Sieve Screen Diameter: φ75 mm)MeasuringPoint

Numberof holes

Aperture (μm)
AverageMaximum Minimum

Competitor A

Competitor BNumber of Holes(Unit: 10,000)

Sieve Size (cm2)

MeasuringPoints

Tokyo Screen Standard Min.

Sheet DiameterTokyo Screen Standard Max.

Hole Shape

Average ToleranceTokyo Screen Standard:(e.g. tolerance of 10-11 μm foran average aperture of 10.5)

ElectroformedSheet

Tokyo ScreenStandard

Total

Max. Tolerance

Pitch (μm)
Flow Rate (％)
Total Flow Space (cm)Supporting ToolJIS

JIS Min.

Needed, Thin Weak Sheet

JIS Max.

Average Tolerance

JIS Max.
Tolerance

JIS: (e.g., tolerance of lessthan 14 μm for an averageaperture of 10.5)

Max. Tolerance

Not Needed,Strong Sheet

Point 3 - Super-High Strength Super-High DurabilityTokyo Screen standard sets the thickness of the electroformedsheets for suﬃcient strong, approximately 50 μm.

Aperture (μm)

Micro Screen SievesModelApertureHole ShapeScreen DiameterSieve DiameterThicknessMaterial

RoundNickel

Frame of Micro Screen SieveModelApplyMaterial

Aluminum

Acrylic Acid Resin

Stainless Steel

Aluminum

Acrylic Acid Resin

Stainless SteelStainless Steel

Aluminum

Acrylic Acid Resin

Stainless Steel

Receiver Lid for the Micro Screen SieveModelApplyMaterial

Aluminum

Acrylic Acid Resin＊Please contact us when ordering nonstandard apertures and/or sieve diameters.

8Ultrasonic Vibration Sieving Machine Type TSK-PNSThe low-price type TSK-PNS with the advanced functions of the digital control type DGSoscillator carries out automatic tuning in the ultrasonic operation frequency band from 30 to38 kHz and is capable of continuous operation in the basic setting of the 500 Hz sweepingband (reciprocal speed: 50 Hz) free of any inﬂuences from the shapes and natural oscillationfrequencies of connected metallic samples. It allows easy attachment of the JIS Z 8801testing sieves, which can be attached and detached simply by replacing the bands and hasversatility using sieves with various frame shapes. With improved sieving eﬃciency, reducedor eliminated clogging, reduced cleaning frequency, and other features, the TSK-PNS canimprove work eﬃciency on sieving sites. It also has a waterproof type converter (IP67 ATEX22explosion-proof) and allows cleaning in the isolator.

Features・Operation mode:

Operation frequency band from 30 to 38kHz, tuning frequency ±250 Hz sweeposcillation, sweep speed ﬁxed to 50 Hz・Operation:Oscillation starts when the main switchis turned on.
・Operation panel: Three LEDs go on or blink to indicate anerror, oscillation 1, and oscillation 2.
・Sieve diameter: φ75 to φ300 mm (JIS Z 8801) and soforth・Connection:A maximum of two converters can beconnected in parallel.
・Safety Standards: [Oscillator] IP65, CE, dustproof andexplosion-proof

Speciﬁcations[TSK-PNS oscillator]・Frequency:・Maximum output:・Power source:・Dimensions:・Weight:

30 to 38 kHz50, 100, and 200 WSingle phase, 110V ±10%, 50/60 Hz280 x 190 x 170mm3kg[C35-SD8 converter]High output model with four-layer PZTelement (C35-SD8) in the converter300g・Weight:120mm x φ42 mm・Dimensions:・Heat resistance: -20℃ to +45℃・Safety Standards: ATEX (Article 22), IP65 dustproof・Waterproof type: Body ‒ IP65 (ATEX 22 explosion-proof)Connector ‒ IP67 waterproof(when connected)・General:

Mounting methods・Applicable to various sieves.
・Ring nets exclusive for the ultrasonic sieving machine andother custom-order sieves are also available.

9Ultrasonic Vibration Sieving Machine Type TSK-DGSThe digital control type DGS oscillator can apply ultrasonic vibrations at the appropriatefrequencies in the ultrasonic operation frequency band from 30 to 38 kHz free of anyinﬂuences from the shapes and natural oscillation frequencies of connected metallic samples.
With exclusive PC software, it can set the frequency band, sweeping frequencies, and otherconditions. It allows easy attachment of the JIS Z 8801 testing sieves, which can be attachedand detached simply by replacing the bands and demonstrates versatility using sieves withvarious frame shapes. With improved sieving eﬃciency, reduced or eliminated clogging,reduced cleaning frequency, and other features, the TSK-PNS can improve work eﬃciency onsieving sites. It also has a waterproof type converter (IP65 ATEX explosion-proof) and allowscleaning in the isolator.

Features・Operation mode:・Sieve diameter:・Power limit:・PC software:・Interface:

Frequency sweep oscillation andcomplex oscillationφ75 to φ300 mm (JIS Z 8801) and so forthControls maximum output of100 W/200 W oscillator.
Parameter setting, frequency analysis softwareRS-232

Speciﬁcations[TSK-DGS oscillator]・Frequency:・Maximum output:・Power source:・Dimensions:・Weight:

30 to 38 kHz100 and 200 WSingle phase, 200V ±10%, 50/60 Hz280 x 190 x 170mm3kg[D35-SD8 (E) converter]300g・Weight:120mm x φ42 mm・Dimensions:-20℃ to +45℃・Heat resistance:・Safety Standards: ATEX (Article 22), IP65 dustproof・Waterproof type E: With waterproof connector.
Alumite-treated body. Not applicableto strong acid or alkaline detergent.

Mounting methods・Applicable to various sieves.

PC software・Exclusive analysis software allows 1 Hzorder adjustment of the frequency band (30 to38 kHz) and reciprocal frequency (sweepingfrequency) up to 100 Hz. It also has amaximum output limiting function, frequencyanalysis function, frequency setting whenseveral converters are connected, conditiondata storage and management function, etc.

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Ultrasonic Vibration Sieving System Type TSK-UDSThe ultrasonic vibration sieving system enables dry sieving of ﬁne powder with 5 to 15 μmmicro-screens when the vacuum pump and ultrasonic sieving machine TSK-PNS (ultrasonicfrequency: 30 to 38 kHz) are set on the exclusive housing. As a matter of course, the JIS Z8801 wire nets can be used with it. Replaceable nets are applicable to sieving of various ﬁnepowder samples. The clamp detaching structure can be used easily by anyone, the sievingeﬃciency of ﬁne powder is improved, and ﬁne powder, which could not be sieved until now,can be sieved. The speciﬁcations can be changed into the two-stage type, though the standardtype is the one-stage type.

Speciﬁcations[Body]・Material:・Dimensions:・Weight:[Vacuum pump]SUS304130 I.D. x 360 H(excluding the vacuum pump andultrasonic oscillator connecting part)7kg[TSK-PNS oscillator]・Frequency:・Maximum output:・Power source:・Dimensions:・Weight:

30 to 38 kHz50, 100, and 200 WSingle phase, 110V ±10%, 50/60 Hz280 x 190 x 170mm3kg[Micro-screen sieve]

50 x 100 x 120H・Dimensions:100 VAC・Power source:1.8l/min・Max. exhaust:・Ultimate vacuum: 20hpa600g・Weight:[C35-SD8 converter]Four-layer PZT element(C35-SD8) in converter300g・Weight:120mm x φ42mm・Dimensions:・Safety Standards: ATEX (Article 22),IP65 dustproof・General:

・Opening dimension: φ100 mmφ5(±1) μm to・Aperture:φ15(±1) μmNickel (thickness:・Material:approx. 40 μm)

Mounting method・Micro-screen sieve and net sieves canbe replaced with clamps.

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13

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15

Test Sieves Shaker TSK B-1Speciﬁcations（including vibration）Size

W520 × D320 × H710㎜

Voltage Ｖ

AC100VPower Ｗ

60W

RotationMax. 60 Hz/2300 rpm (adjustable)

Shake6㎜

Weight42kg

Material

Exterior (paint): Aluminum, etc.

Timer60 min Clockwork

50/60Hz（5A）Speciﬁcations on Horizontal Tapping WavePower Ｗ

15W

Tapping Rotation 0 ‒ 12 rpm, repeatableHammer

3

Tapping Force

12kgf

Material

Exterior (paint): Metal Work, etc.

Sieve（Max. No.）

φ 200㎜× 45㎜ H Max. 7 (including 1 receiver)φ 200㎜× 60㎜ H Max. 7 (including 1 receiver)

Vibration and HorizontalTapping Combined MotionThe Test Sieves Shaker is the application machine that generatesvibrations and horizontal tapping motions for sifting sieves. The shakingmotion is combined with a circular motion (vibration) and shockwavesto multi-laid sieves, resulting in eﬃcient screening tests (available for theadjusting the strength of the motion). The shaker is more compact thandevices currently in use and can be placed on a desktop without screws orbolts. The model is the most suitable for laboratories because of the lownoise level.
Screening Process Example

Motion of Particles

Test Sieves Shaker, φ200mm x 60H,7-Layer (Including 1 Receiver)

Rotation and Remaining RateQuartz Sand Mixture

rpm

Quartz Sand Mixture

Rotation: 2280 rpmHumidity: 60.5%(Screening Time: 55 min)

62:1tation1980 rpm2280 rpm

900rpm528 rpm

Screening Time (min)Motion Strength Level and Rotation

Rotation: 1620rpmHumidity: 60.5%

Rotation: 1200rpmHumidity: 60.5%

Rotation: 900rpmHumidity: 60.5%

Rotation (rpm)mrp53pping

Rotation:60rpm

Quartz Sand Mixture

Ta

Screening Eﬃciency (%)

Screening Test Example

Rotation: 1980rpmHumidity: 64%

1200 rpm

Screening Eﬃciency (%)

Motion Direction of ParticlesHorizontal Motion

Ro

Receiving Weight (g)030 mm Stroke

Rotation: 528rpmHumidity: 60.5%Tapping Rotation: 50 rpmScreening Time: 60 min

Aperture (μm)
Rotation: 528 rpm

Screening Time: 10 minLevel of Motion Strength

16

Aperture (μm)

Test Sieves Shaker TSK B8-1Speciﬁcations（ﬁgure-eight rotation）Size

W600 × D490 × H300㎜

Voltage Ｖ

AC100VPower Ｗ

70W

50/60Hz（5A）

Stroke A：80 〜 400rpm

Rotation

Stroke B：40 〜 200rpm

Shake

Stroke A：24㎜ Stroke B：24㎜

Timer

60 min Clockwork

Weight84kg

Speciﬁcations on Horizontal Tapping WavesSize

W495 × D370 × H360㎜

Voltage Ｖ

AC100VPower Ｗ

15W

Hammer

250/60Hz（3A）Tapping Rotation 0-12 rpm, repeatableTapping Force

10kgfSieve（Max. No.）

φ 200㎜× 45㎜ H Max. 7 (including 1 receiver)φ 200㎜× 60㎜ H Max. 7 (including 1 receiver)

Figure-eight Swing Rotationand Horizontal TappingTest Sieves Shaker TSK B8-1 shakes all sieves simultaneously in a ﬁgure-eightmotion to make particles widespread on each layer of mesh. Additionally, theunit adds horizontal tapping to each sieve to accelerate the screening process. Thisfunction shortens the test time for accurate results. The tapping shock ishorizontal in the same direction as the figure-eight swing rotation. Thisparallel combination prevents the particles from hopping inside each sieve to makescreening more eﬃcient and stable.
Motion and Direction of Particles

Motion and Direction of Particles

Motion and Direction of ParticlesTest Particle: Abrasives (Mixture)

Test Particle: Abrasives (Mixture)Rotation (rpm)B-1 (Rotation: 1620 rpm and 60 taps per minute)222 rpm with Tapping

172 rpm with TappingOnly Tapping

205 rpm without Tapping

Level of Motion Strength (−)
172 rpm without Tapping

Motion and Direction of Particles

Remaining Rate (%)

Receiving Weight (g)205 rpm with Tapping222 rpm without Tapping

Screening Time (min)Stroke A

Stroke B

Aperture (μm)
Figure-eight Horizontal Motion

Screening Time: 20min17

Brushes for Test SievesTokyo Screen provides standardized brushes for test sieves (JIS Z 8815-1994). As thestandard prescribes (6.1.1 and/or 6.2.1), the brushes clean the remaining particles through themesh without damage to the screen. Along with the standard (description pp. 5 and 14), thebrush should not press the screen mesh too forcefully and must move in the same directionas the aperture layout. The standard designated appropriate bushes in Tables 2 and 3.

JIS Z 8815-1994 Tables 2 and 3Standard Type

φ80For Sieveswith a Diameter of300, 200, and 150 mm61235Thickness of Brush・Applicable for Sieves with Diameters over 150 mm・Should Brush a Wide Area on the Screen Mesh・Easy to Hold and Handle

ApertureThickness

CodeOver 500㎛

Over φ 0.5㎜

JNB-1425㎛〜 125㎛

Over φ 0.4㎜

JNB-2・Strong Enough Against Losing Fiber

106㎛〜 63㎛

Over φ 0.3㎜

JNB-3・Variable for Diﬀerent Aperture Sizes

Less than 53㎛

Over φ 0.2㎜

JNB-4

・Diameter 80 mm x 55 H (35 mm Brush Length)

Stick Type

Brush: Nylon / Base: PE・Applicable for Small Sieves・Reach to the edge of the screen mesh・Easy to hold and feels light when handling・Strong Enough against Losing Fiber・2 Types must suit all small sizes.
・25 mm Width x 155 H (35 mm Brush Length)

Thickness of BrushAperture

Thickness

Set of Two Types

CodeJNB-56

Less than 106㎛

φ 0.2㎜・φ 0.3㎜

JNB-5Over 125㎛

φ 0.4㎜・φ 0.5㎜

JNB-6

Brush: Nylon / Base: PE18