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DID 60 standard roller chain - Big Bike Webshop

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Roller Chains for Power Transmission Designing of Chain Transmission<br />

Chain Selection by Temperature<br />

Roller Chains for<br />

Power Transmission<br />

Designing of Chain<br />

Transmission<br />

This is a <strong>chain</strong> selection method taking deterioration of strength in relation to temperature into consideration. Please<br />

use appropriate lubricant for the temperature at which the <strong>chain</strong> is to be used. Consult us for details.<br />

1. Effects of temperature on the <strong>chain</strong>s<br />

1.1 Effects of high temperature<br />

1) Increased wear caused by decrease in hardness<br />

2) Increased elongation caused by softening<br />

3) Lubricant degradation, defective flexion caused by<br />

carbonization<br />

4) Increase in wear and defective flexion caused by<br />

development of scales<br />

2. Kilowatt ratings according to temperature<br />

1.2 Effects of low temperature<br />

1) Decrease in resistance to shock caused by low<br />

temperature brittleness.<br />

2) Defective flexion caused by lubrication oil coagulation.<br />

3) Defective flexion caused by adhesion of frost and ice.<br />

4) Rusting caused by water-drops.<br />

Temperature<br />

<strong>DID</strong><strong>60</strong> or smaller<br />

Roller Chain<br />

<strong>DID</strong>80 or larger<br />

Low Temperature resistance<br />

(TK)<br />

250°C and above<br />

NA<br />

NA<br />

NA<br />

200°C to less than 250°C<br />

Catalog value0.50<br />

Catalog value0.50<br />

NA<br />

150°C to less than 200°C<br />

Catalog value0.75<br />

Catalog value0.75<br />

NA<br />

80°C to less than 150°C<br />

Catalog value<br />

Catalog value<br />

Catalog value<br />

(Max. allowable load at normal temperature)<br />

-10°C to less than 80°C<br />

Catalog value<br />

Catalog value<br />

Catalog value<br />

(Max. allowable load at normal temperature)<br />

-30°C to less than -10°C<br />

Catalog value0.33<br />

Catalog value0.50<br />

Catalog value<br />

(Max. allowable load at normal temperature0.70)<br />

-40°C to less than -30°C<br />

Catalog value0.25<br />

Catalog value0.33<br />

Catalog value<br />

(Max. allowable load at normal temperature0.58)<br />

-50°C to less than -40°C<br />

NA<br />

Catalog value0.25<br />

Catalog value0.46<br />

(Max. allowable load at normal temperature0.46)<br />

-<strong>60</strong>°C to less than -50°C<br />

NA<br />

NA<br />

Catalog value0.41<br />

(Max. allowable load at normal temperature0.41)<br />

-<strong>60</strong>°C or less<br />

NA<br />

NA<br />

NA<br />

Please be aware that ambient temperature and the temperature of <strong>chain</strong>s may differ.<br />

3. Chain Selection according to Temperature<br />

See slow-speed selection (p121) for use at extreme temperatures other than normal temperature.<br />

(Chain speed=50m/min or less)<br />

4. Use of Stainless Steel Chains (SS, SSK) at high temperatures<br />

Stainless steel <strong>chain</strong>s (SS, SSK) can be used up to 400°C, but be aware that the ambient temperature and the <strong>chain</strong><br />

temperature may differ. The strength of the <strong>chain</strong> decreases as the temperature rises. Especially at high<br />

temperatures, the higher the temperature rises, the <strong>chain</strong> will rupture by a lower load (creep rupture).<br />

In addition, defective flexion or defective <strong>chain</strong> revolution occurs due to heat expansion. In order to prevent such<br />

problems, adjust the clearance between <strong>chain</strong>s. Consult us when using <strong>chain</strong>s at 400°C or higher.<br />

Chains cannot be used at 700°C or higher.<br />

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