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Powered rollers; specifications
You can find information about the dimensions of chains and sprockets
below.
Chains
- a chain must not be under tension higher than 10% of its breaking
strain. The maximum is 7% for an impact tension
- in the case of chain-powered transport rollers, resistance due
to chain and roller together comprise 10% of the load on the roller
- the points mentioned above combine to give the following rule
of thumb: the total weight on a conveyor
segment must not exceed the breaking strain of the chain
- the chain should be in contact with at least 90° of the driving
wheel
- when there is an odd number of links in the chain, an offset section
should be included
Chain dimensioning table according
to DIN 8187 ISO/R606
| ISO nr. |
identification
#
t x b mm |
spacing
t mm |
a
mm |
b1
mm |
b2
mm |
d1
mm |
d2
mm |
g
mm |
a+k
mm |
breaking
strain
min. in daN |
sprocket
width |
06B-1
08B-1
10B-1
12B-1
16B-1 |
3/8x7/32"
1/2x5/16"
5/8x3/8"
3/4x7/16"
1"x17,02 mm |
9.52
12.70
15.88
19.05
25.40 |
14.8
18.2
20.2
23.5
38.7 |
8.53
11.30
13.28
15.62
25.45 |
5.72
7.75
9.65
11.68
17.02 |
6.35
8.51
10.16
12.07
15.88 |
3.28
4.45
5.08
5.72
8.27 |
8.3
11.8
14.7
16.0
20.6 |
16.8
20.9
23.7
27.3
42.4 |
910
1.820
2.270
2.950
6.500 |
5.2
7.0
9.0
10.8
15.8 |
When a segment of more than 90° of the sprocket is in contact
with the chain, the standard tooth shape can be used.
When a segment of less than 90° of the sprocket is in contact
with the chain, a rack and pinion tooth shape (triebstock) can be
used. The advantages of this are: broader and stronger teeth, less
wear (due to the lesser extent to which the chain is pushed out
of the tooth sockets) and quieter running.
Z
d
dk
dv
|
=
number of teeth
= pitch diameter
= outer diameter
= root diameter |
t
:
:
:
: |
=
pitch
t / sin x 180 / Z
d + 0,90 x d1
d - 1.01 x d1
½ x ( number of links- Z ) x t |
| H-H axles when Z1 = Z2 |
Standard
tooth shape
|
Rack
and pinion tooth shape
|
 |
 |
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