DID 60 standard roller chain - Big Bike Webshop

Technical Data Chain Selection
Selection case !
A conveyor chain for bucket elevator conveying a powder vertically
using buckets.
Specifications
Conveyor type
Guide discharge type bucket elevator
Max. conveyance capacity
Q 250 ton/h
Conveyance speed S 25 m/min
Horizontal center distance between sprocket shafts L 20 m
Weight of bucket
W1 60 kg/m
Weight of chain
W2
(Estimate W2 as 20kg/m/strand for the initial calculation.)
Bucket installation intervals
500 mm
Chain pitch
250 mm
Number of chain strands
2 strands
Calculation
Technical Data
Chain Selection
Apply the formula for horizontal conveyance by scraping shown in the table on P333.
Weight of traveling components per 1m MW12W260 220100k/m
Q
g
Max. chain tension T (16.7
S
M)(L2)
1,000
T(L2)
Required power kW
320
When the values of the above specifications are applied to these formulas,
250
9.80665
T (16.7
25
100)(202)
1,000
57.6 kN
The value of T obtained here is a tension acting on two chain strands. So, the chain tension per stands is T/2.
Since the conveyance speed (chain speed) is 25 m/min, the safety factor Ks is 7 from the table of P334.
Furthermore, for an 12-hour operation per day with no lubrication, engendered by poor environment, the service
factor Ke is 1.8 from the table on P333.
57.6
Required chain strength
2
71.8362.9 kN
Therefore, NE Bucket Elevator Chain DK35Z250M 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.
Since the mass of this chain with Attachment G4 on every two links is 15k from the dimension table on P287,
Weight of traveling components M6015290 k/m
Therefore, the maximum service chain tension is
250
9.80665
T(16.7
25
90)(202)
1,000
55.4 kN
The chain tension per chain strand is
55.4
2
71.8349 kN392 kN
Hence, the chain size to be selected is DK35Z250M-2PG4.
3922
Conveyor chain safety factor Sf 14
55.4
Required power (when the mechanical transmission efficiency of drive is 0.8)
55.425
kW
33.2 kW
52.20.8
336