DID 60 standard roller chain - Big Bike Webshop

Examples of Calculation for Selection
Selection case !
A powder is horizontally scraped to be conveyed by a
scraper conveyor.
Specifications
Conveyor type
Max. conveyance capacity
Conveyance speed
Horizontal center distance between sprocket shafts
Scraper installation intervals
Weight of traveling components
Weight of scraper
Weight of chain
Calculation
Scraper conveyor
Q 100 ton/h
S 20 m/min
L 30 m
600 mm
M W1W2
W130 kg/m
W2
Note: Estimate W2 as 20kg/m/strand for the initial calculation.
Apply the formula for horizontal conveyance by scraping shown in the table on P333.
Q
g
Max. chain tension T (16.7
S
f22.1Mf1)L
1,000
TS
Required power kW
52.2
When the values of the above specifications are applied to these formulas,
100
9.80665
T (16.7
20
0.62.1500.2)30
1,000
21 kN
The value of T obtained here is a tension acting on two strands. So, the chain tension per strand is T/2.
Since the conveyance speed (chain speed) is 20 m/min, the safety factor Ks is 7 from the table of P334.
Furthermore, for an 8-hour operation per day with no lubrication, the service factor Ke is 1.5 from the table on P334.
Required chain strength
Coefficient of friction between chain and guide rail f10.2
Coefficient of friction between conveyed articles and bottom plate or side plate f20.6
Number of chain strands
2 strands
21
2
71.5110 kN
Therefore, Standard Conveyor Chain DK11150F standard version can be tentatively selected as it satisfies the
average tensile strength.
Then, an accurate calculation can be done with the actual weight of the selected chain.
This chain has Attachment A2 for every four links. From the dimension tables on P229, the values for the components
are as follows:
Chain body weight
Attachment weight
Attachment installation intervals
Hence,
0.24
Weight of chain 7.90
0.60
8.3 k/m/strand
Weight of traveling parts M308.3246.6 k/m
Therefore, the maximum service chain tension is
100
9.80665
T(16.7
20
0.62.146.60.2)30
1,000
20.5 kN
The chain tension per strand is
20.5
2
71.5108 kN112 kN
Hence, the chain size to be selected is DK11150F-4P12 standard version.
1122
Conveyor chain safety factor Sf 11
20.5
Required power (when the mechanical transmission efficiency of drive is 0.8) is
20.520
kW
9.8 kW
52.20.8
Technical Data
Chain Selection
335