SISIKU ADDKREIS CORPORATION

Box Style Structure >　Characteristics of Wheels >　Antibacterial Polyurethane wheels >
　Electrically conductive casters >　Monomer cast nylon wheel＞

Components and Parts of Caster

Nomenclature; name of individual components 　

Box Style Structure

SISIKU's unique technology "Box Style" makes its wheel center durable
and prevents dirt and dust from intruding in wheel.

Cross section of SISIKU's Box Style wheel

　　Cross section of wheel by other manufacturer

TOP＞

Characteristics of Wheels

Various kinds of wheels according to application areas or purposes.
To select suitable wheels, refer to the table below to become familiar with characteristics of wheels.


Name of wheels	Rubber wheel (SBR)	Polyurethane wheel (UR)	Butadiene rubber wheel (BR)	MC wheel (Monomer cast nylon)
Hardness	70-75	90-92	55-60	115-120
Elasticity
Compression set
Wear and abrasion 　resistance
Atmospheric corrosion 　resistance
Oil resistance 　 (Machine lubricant)	△		△
Petrol resistance	×		×
Heat resistance (℃)	90	80	90	120
Cold resistance (℃)	-30	-30	-40	-40
Water resistance		△
Chemical resistance 　(Weak acid/Alkaline)		×
Starting performance
Main features	High resistance to wear and abrasion and excellent elasticity.	Excellent mechanical strength	High elasticity and excellent wear and abrasion resistance.	Excellent wear and abrasion resistance and self-lubricating property

TOP＞

Antibacterial Polyurethane wheels

Antibacterial characteristic makes casters suitable for carriers for food industries.
Wearing resistance and clean polyurethane

Results of antibacterial test by Japan Food Research Laboratories

Inoculum strain	Number measurement	Specimens	Number of strain
Staphylococcus aureus	Right after inoculation	Comparison	400,000
	After 24hours at 35℃	Sample a)	920,000
	After 24hours at 35℃	Sample b)	Less than 10
Escherichia coli	Right after inoculation	Comparison	280,000
	After 24hours at 35℃	Sample a)	19,000,000
	After 24hours at 35℃	Sample b)	210

The number of Staphylococcus aureus decreased from 400,000 to below 10, and Escherichia coli from 280,000 to 210 respectively after 24hours.

Right after inoculation

↓

After 24hours

WUW (Antibacterial polyurethane) wheel can be applied to standard pressed steel, Stainless steel and Scaffolding casters.

TOP＞

About "Electrically conductive casters"

When selecting this type of caster with carriers in clean room and equipment of examination as a countermeasure against static electricity , you can refer to volume resistance of the materials used.

Volume resistance

Applying voltage to a cubical object generates electric current both inside and outside the object.
Resistance against the current inside is called "volume resistance" The less value, the higher electrically conductivity.

Under 10²Ω・ｃｍ・・・・・・・Highly conductivity
10³～10⁵Ω・ｃｍ・・・・・Conductivity
10⁶～10⁹Ω・ｃｍ・・・・・Electrostatic property

When used with platform trucks, ISO criterion value of resistance applied to the area including handle and the floor is less than10⁹Ω・ｃｍ

For further details of our electrically conductive casters, please click her.

TOP＞

About monomer cast nylon wheel

Monomer cast nylon has higher molecular mass and crystallization degree compared to the conventional nylon resin.
It has excellent mechanical and thermal properties, abrasion, chemical and fatigue resistance.

1.　Toughnes ・・・Excellent impact resistance and load capacity

2.　Chemical Resistance ・・・Chemical, oil and solvent resistance

3.　Wear and abrasion resistance ・・・Low coefficient of friction thanks to self-lubricating property

4.　Vibration reduction　・・・ Absorbs vibration well thanks to small natural vibration frequency and big logarithmic decrement, resulting in noise reduction.

5.　Lower in cost ・・・Suited to volume production and help to reduce production cost

MC (Monomer cast nylon) wheels can be applied to Standard pressed steel, Compact medium duty, Compact heavy duty, Twin wheeled compact heavy duty, Compact Extra Heavy duty, Stainless steel, Corner and Shock absorbing casters.

TOP＞