ELEKTROMAG Moulded Plastic Cable Drag Chains are a logical addition to the range of the steel Cable Drag Chains which have proved themselves worldwide for over 25 years.
They can be used wherever the required energy input cables/hoses are light, the travel is small and the environmental conditions permit the use of plastics.
The chain links and separating plates for taking the cables/hoses, form a single unit in the ELEKTROMAG Cable Drag Chains. The individual chain links can be connected by a snap connection enabling them to be joined to form a chain of any required length. One of the advantages of this system is that the customer can make up any required length of chain so that stocks can be kept and it is not necessary to place an order for each requirement.
If the cross section of a cable drag chain is too small for the cables, it is possible to divide the cables between a number of chains arranged side by side or opposite to each other.
TECHNICAL DATA
A support tray is required when there is no satisfactory support for the chain
Length of support tray LA = Ls + allowance ZA
TABLE OF DIMENSIONS
| Chain Type | 0320 | 0320/1 | 0450/I | 0450/II | 0450/III | 0625(0625V) | 0700(*) | 0900(*) | |
| Chain pitch P | mm | 32 | 32 | 45 | 45 | 45 | 62.5 | 70 | 90 |
| Chain width Bk | mm | 24 | 35 | 54 | 74 | 94 | 126(134) | 178 | 186 |
| Link height Hg | mm | 25 | 25 | 34 | 34 | 34 | 56 | 64 | 84 |
| Bending radius KR | mm | 37 | 37 | 52/94 | 52/94 | 52/94 | 75/90/125/200 | 150/200/250 | 150/200/250 |
| Height H when fitted without initial tension | mm | 100 | 100 | 138/222 | 138/222 | 138/226 | 206/236/306/456 | 364/465/565 | 384/485/585 |
| Permitted unsupported chain length | m | 0.8...1.0 | 0.8..1.0 1.4..1.7 1.2..1.5 | 1.0...1.2 | 2.0...2.5 | 3.5 | 4.0 | ||
| Chain weight | Kg/m | 0.35 | 0.35 | 0.8 | 1.0 | 1.2 | 1.6 | 3.5 | 5.6 |
| Length allowance for support tray | mm | 180 | 180 | 230/270 | 230/270 | 270 | 330/340 380/450 | 575 | 660 |
| Tray inside width b1 | mm | 40 | 52 | 60 | 80 | 100 | 140 | 190 | 200 |
| Tray outside width bA | mm | 55 | 67 | 80 | 100 | 120 | 170 | 230 | 240 |
| Tray height hA | mm | 18 | 18 | 25 | 25 | 25 | 40 | 46 | 66 |
ELEKTROMAG Moulded Plastic Cable
Drag Chains can be used in horizontal
applications within the stated permissible
unsupported lengths without additional
supports. However, if these lengths are
exceeded or for different applications, the
layout should be made by our engineers.
If the permissible unsupported length of the chain is exceeded, due to its elastic characteristics the upper section of the chain rests on the lower one. Due to the excellent anti-friction characteristics of the plastic material used, this does not impair the function of the chain when moving. However, it is essential that a guide channel is fitted. The chain in the channel behind the fixed point can also be supported by guide strips(A) or rollers(B) fitted to the channel wall.
Chain Type b1 bKA h1 hKA 0320/1 29/40 38/49 27 50 0450/I 59 73 37 70 0450/II 79 93 37 70 0450/III 99 113 37 70 0625
0625 V140 154 59 117 0700(*) 183 223 65 130 0900(*) 206 226 87 170
TYPES
Chain Type 0625
0625 V
The chain Type 0625 can be supplied with or without separating plates to guide the cables. When ordering, please state the number of separating plates per link required.
0625 chain is in the combination of plastic liner and aluminium stays. 0625 states that variable widths can be provided with or without divider.
Chain Type 0700(*) / 0900(*)
Chain Type : 0700
Chain Type : 0900
The chain type 0700 and 0900 can be supplied with or without separators.
The chain can be supplied in totally enclosed form with hinges open or snap type. Variable widths can be provided with internal opening ranging from 150 to 300 mm (max).However, internal height will remain the same in both models.
CONNECTING DIMENSIONS FOR CHAINS (in mm)
Example:
Chain Type b1 b2 I1 I2 I3 d 0320/0320/1 - - 50 15 7.5 7/M6 0450/I 22 25 53 24 8.0 7/M6 0450/II 42 45 53 24 8.0 7/M6 0450/III 62 65 53 24 8.0 7/M6 0625/0625 V 92 97 70 30 12.5 9/M8 0700(*) 132 132 77 35 12 15/M9 0900(*) 130 130 100 40 15 18/M12 Chain Type 0700(*) and 0900(*) are with aluminium stay having variable chain widths.
To specify a ELEKTROMAG Moulded Plastic Cable Drag Chain, we require the following information
- Length of travel
- Max acceleration or deceleration
- Speed of travel
- Frequency of travel
- Number and outside diameter of the cables/hoses to be installed
- Required minimum bending radius of cables or hoses
- Weight of cables or hoses
- Available mounting width
- Type of application(dwg.if possible)
- Working environment
A movable unit travelling at a speed of v=10m/min, with an acceleration of bmax=0.5m/s2 and a travel frequency of f=80 per hour is to carry 3x25 dia cable. The length of travel Ls is 2200 mm. Installation horizontal with fixed point below. The lower part of the chain rests on the machine base.
Chosen design specification:
- Required unsupported length
Lfreq = Ls/2= 2200/2 mm = 1100 mm
(fixed point in centre of travel distance)
- Cross-Section
Required clear width:
E Cable dia + 10% allowance + E thickness of separating plate (for Type 0625)
3 x 25 mm + 3 x 2.5 mm + 2 x 3.5 mm = 89.5 mm
Required clear height :
Max cable dia + 10% allowance
25 mm + 2.5 mm = 27.5 mm
Required cross-sectional area : 89.5 mm x 27.5 mm.
Chain selected : Type 0625
with clear internal cross-section 108 mm x 34 mm
- Bending Radius
KRmin for 25 dia cable = 190 mm
(spec.by manufacture.)
Chosen standard bending radius KR = 200 mm
- Length of cable drag chain
Lk = Ls / 2 + KR .pi + allowance (allowance = 4 x pitch)
Lk = 1100 mm + 628 mm + 250 mm = 1978 mm
Lk = 2000 mm (rounded off to the nearest pitch length)
- Connection height
H = 2KR + link height
H = 2 x 200 mm + 56 mm = 456 mm
ELEKTROMAG Moulded Plastic Cable Drag Chain Type 0625:
KR = 200mm 2 Separating plates per link
lk = 2000mm for horizontal installation with fixed point below.
H = 456mm without support channel
With 4 connecting angles Chain rests on machine base