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Screw & Shaft

부품소개Screw & Shaft

Depth Screw and Spline Shaft

Involute spline for
high power output

Various types and materials
of screws are available to
meet customers’ specific
requirement.

SCREW (Do / Di =1.55)
Screw intermeshing ratio is 1.55 (Out-dia./In-dia.)
Names of the screws are shown in the figure below.
The function of the screw include feeding, melting, mixing,
dispersing, congesting, degassing and pressurizing as
illustrated in the figure.
Specification
Code Material Protection Hardeness Temp
(MAX.)
Protect against Material
Abrasion Corrosion
Very high <-- --> Very high
SM 100 Nitrided steel Normal 900~1050 Hv 450℃ Nitrieded
SM 110 Cr Base Tool Steel Abrasion 58~60 HRc 450℃ Cr Base
SM 111 Cr Base Tool Steel Abrasion 900~1050 Hv 450℃ Cr Base
SM 150 PM-HIP Compound Abrasion + Corrosion 60~62 HRc 450℃ V Base
SM 150H PM-HIP Compound Abrasion + Corrosion 68~70 HRc 450℃ V Base
dp-Type Screw (Do/Di=1.62)

Screw outer-diameter divided by inner-diameter is
called intermeshing ratio. (Typical ratio = 1.55)
With the same center distance, the intermesh-ratio is
increased from 1.55 to 1.62 to provide lager space for
material transfer.
This is suitable for the materials containing high ratio of fillers.

Materials of lower specific gravity are easy for processing.
It is possible to reduce the heat generated by the reduction of the
inner friction surface of screws and sleeves to reduce discoloration
caused by heat. It is advantageous for reaction process due to extended residence time.

Screw(Example)
Name Application
Screw SC60-60 Feeding
Normal, 2-Lobe Type
SK60-60 Feeding
Undercut, 2-Lobe Type
SC60-60-1/1 Feeding
Volume Expansion,
1-Lobe Type
SC60-30L Feed Blocking
Normal Reverse,
2-Lobe Type
Name Application
Kneading
Block
KB60-3N Melting & Mixing
Normal, 2-Lobe,
90degree
KB40-5R Melting & Mixing
Normal, 2-Lobe, Right
KB40-5L Melting & Mixing
Normal, 2-Lobe, Left
KB40-3/3 Melting & Mixing
Special, 3-Lobe