Mechanical Device; Material And Finish - Brano 15-00 Operation Manual

5.1 MECHANICAL DEVICE

Safety and working life of the jack is guaranteed if it works in accordance with
specified classification.
The jack is designed for class 1Bm according to the FEM 9.511 regulation – see
table 5.1. (it corresponds to mechanism classification M3 according to the ISO
4301/1).
Average daily operating time is specified in the load diagram.
Load diagram
(load distribution)
1
(light)
2
(mean)
3
(heavy)
4
(very heavy)
Load diagram
1

5.2. MATERIAL AND FINISH

5.2.1 All parts of the jack are manufactured from steel and cast iron, the brake liners
from hardened woven fabric.
5.2.2. Materials inclinable to creation of an incendiary spark in terms of the annex
No. 2 article 1.3.1 to the ministerial order No. 116/2016 of the Coll. of Laws
and the ČSN EN 1127-2 article 6.4.4 ČSN EN 1127-1 article 6.4.4 and EN ISO
80079-36 article 6.4.2.1 harmonized technical standards are not used.
5.2.3. Materials with dangerous effects of static electricity within the meaning of the
ČSN EN 1127-2 article 6.4.7, ČSN EN 1127-1 article 6.4.7, EN ISO 80079-36
article 6.7 and ČSN ČSN CLC/TR 60079-32-1 are not used in the chain block.
Tab. 5.1 MECHANICAL CLASSIFICATION
Definition
Jacks usually being subject
to the low load and only in
special cases to the
maximum load.
Jacks usually being subject
to the low load, but quite
often to the maximum load.
Jacks usually being subject
to the mean load, but
frequently to the maximum
load.
Jacks usually being subject
to the maximum load or load
approximating to the
maximum.
Load diagram
2
Percentage of operating time
Load coefficient
k ≤ 0,50
0,50 < k ≤ 0,63
0,63 < k ≤ 0,80
0,80 < k ≤ 1,00
Load diagram
3
8
Average daily
operating time (h)
1 - 2
0,5 - 1
0,25 – 0,5
0,12 – 0,25
Load diagram
4