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MP 18.4

MP 18.4
Internal height: 18 mm
Internal widths: 18 - 50 mm
Outside widths: 31 - 63 mm
Radii: 40 - 80 mm
Pitch: 33 mm
Links Per Meter: 30
Interior/exterior widths
Interior width (A) Interior height (B) Exterior width (D) Exterior height (C)
50 mm 18 mm 63 mm 23 mm
18 mm 18 mm 31 mm 23 mm
Radius (R)
40 mm
50 mm
80 mm
Radii with medium bias (R) for all applications
Back radius combinations
EMC cable drag chains for use in areas at risk of explosion
Chain bracket with metal inserts and strain relief
Frame bridges, folding on one side
Integrable separator for cable separation
EMC cable drag chains for use in areas of electrostatic discharge
UL version in oxide red, classification V0

Material characteristics standard (PA/black)

Service temperature: -30 - 120 ° C
Gliding friction factor: 0.30
Static friction factor: 0.45
Fire classification: In accordance to UL94 HB

Other information on request

Technical Specifications

Travel distance, gliding Lg: Not Recommended
Travel distance, self-supporting Lf: See Diagram
Travel distance, vertical, hanging Lvh: 8 m
Travel distance, vertical, upright Lvs: 3 m
Rotated 90°, unsupported L90f: 0.50 m
Speed, gliding Vg: 0 m /s
Speed, unsupported Vf: 5 m /s
Acceleration, gliding ag: 0 m /s²
Acceleration, unsupported af: 5 m /s²

Self-supporting length


Ideal installation situation for high stresses at the limit of the max. travel parameters. In this range the chain upper run is still biased, straight or has a max. sag of 10 – 50 mm depending on the type of chain.

Satisfactory installation position for many applications working in the lower to middle range of the max. travel parameters. Depending on the chain type, the sag of the chain upper run is > 10 – 50 mm but less than the max. sag. If the sag is greater than FLb, the application is critical and should be avoided. Please choose a more stable Murrplastik cable drag chain.

Determining the Chain Length


L = Travel distance
R = Radius
T = Pitch
E =

Length = L/2 + π × R + 2 × T + E

1 m chain = 30 x 33 mm links The fixed point of the cable drag chain should be connected in the middle of the travel distance. This arrangement gives the shortest connection between the fixed point and the moving consumer and thus the most efficient chain length.

Chain weight

0.222 kg/m
Chain bracket

Chain bracket

The chain bracket is an all-plastic part with an extrusion-coated metal insert. The bracket is precisely adjusted to the respective chain width and only needs to be snapped in at the chain link. Please order one male and one female end bracket for each chain. The brackets should be fastened with M5 screws. The cables or conduits may be fastened with cable ties on the integrated strain relief of the chain bracket.


We recommend that separators be used if multiple round cables or conduits with differing diameters are to be installed. An offset configuration of the separators is advisable.

Guide channel systems for cable drag chains serve as trays for short travel distances and at the same time as guides for long travel distances. If no guide channel is used it is possible that the chain links may lay and move incorrectly. Especially for large bend radii as the side guidance does not exist. In most applications the cables/conduits enter the chain at a position central to the travel. This gives the shortest length of chain. In this case the chain is about half as long as the travel distance. If the chain is moved to the left (see illustration below) it simply rolls in the channel. If it is moved to the right, then it stacks on top of itself once the unsupported length has been exceeded. If the movement is further made into direction B the glide rail adjusts the difference in height and guarantees the minimum possible friction. This ensures the optimum free and correct running of the cable drag chain.


20.1 assembly


19.1 disassembly

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