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Series 840

Here you can configure your e-chain system® individually. All entries and changes are taking over to the part list which is situated at the end of the page.

Series 840 - chain, snap-open along both sides with crossbars every link

1. Each chain link is reinforced by four cross bars and thus provides a large unsupported length
2. e-chain® crossbars removable on both sides
3. Stop-dog with brake for noise reduction
4. Optimised gliding surfaces with side wear pads
5. Wide plastic crossbars – cable-friendly
6. Dirt-repelling exterior contour
7. Alternative available with Reverse Bend Radius (RBR).
8. e-chain® available with Reverse Bend Radius
9. 9. High stability through undercut design
10. Inner/outer link principle

Series 840 is suitable for the following types of applications:

Vertical: hanging applications ≤ 120 m, standing applications ≤ 6 m
horizontal: unsupported applications ≤ 8 m, gliding applications ≤ 450 m
rotary: rotating applications possible, may require machining (machining rework is always required from rotation angles of 180°)

When to use Series 840

When a robust e-chain® with 204 mm inner height is required
If an inner width up to 563 mm is required
For unsupported lengths up to 8,0 m and fill weights up to 90 kg/m
For long travels up to 450 m
Good ratio of inner to outer dimension
If the ability to have multiple options and attachment parts is required

When not to use it

When an even more stable e-chain® is required with the same interior height
Series 800

Installation dimensions


Part No. :
Inner width Bi [mm]:
Bending radius R [mm]:
Travel distance S [mm]:
Fixed end dM [mm]:
Chain length^** [mm]:
Number of chain links :
External width Ba [mm]:
H^* [mm]:
D [mm]:
K [mm]:
ΔCL [mm]:
H2 [mm]:
D2 :
K2 [mm]:
Hi [mm]:
Ha [mm]:
Weight per link [g]:
Weight [kg/m]:
* The required clearance height is HF = H + 100 mm (with 5 kg/m fill weight), this should be taken into account for all application types. Please contact us if you have particularly narrow space conditions.
** The calculated length corresponds to the chain length without mounting brackets.

A=Moving end
, B=Fixed end
Pitch: 250 mm per link
Chain links per m: 4
Travel: S
Chain length = S/2 + K

Unsupported length

Unsupported length versus fill weight
X axis: Unsupported length in m FLB/FLG
Y axis: Fill weight in kg/m
Lower scale: Travel S in m
FLB = Unsupported with permissible sag
FLG = Unsupported with straight upper run

Reference example A:
Fill weight = 15 [kg/m]
Unsupported length FLB = 7,0 m
Travel = 14 m

Price index:

Opening mechanism :

Personal contact

Application examples 3D-CAD Samples and catalog order E-Chain® Expert call Service life calculation PDF file Ask the product expert

Quiet model

Steel mounting brackets

35 widths and 8 bend radii

Practical tools for opening and closing of e- chains® of series E4

Design specificationFurther information on "unsupported application"

Design specificationFurther information on "gliding application"

Other installation types

Technical specifications

Strain reliefs

Interior separation

Option 1: Standard

Product range


unassembled	assembled
Per . chain link

Please use Configurator for partitioning of interior and for filling with cables.

Call configurator


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Part No. :
Width [mm]:

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Width [mm]:

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Width [mm]:

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Width [mm]:

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Standard 01
As standard, igus® separators are fitted every 2nd chain link!
Please observe minimum clearance from the side links! e-chain®: 6 mm

Dividing separator 350.1
For vertical division with 450.X on 3 levels.

Horizontal crossbars 450.X
For horizontal division in conjunction with retaining clips and dividing separators. Horizontal crossbars of various widths can be fitted at 3 different heights.

Mounting brackets

Steel - pivoting

Stainless steel - pivoted

unassembled	assembled

For pivoting brackets

Same 2 parts set for all chain widths

Electrically conductive

Note on mounting brackets: Depending on the e-chain® length, the carrier will end with outer or inner side links. For the best appearance, make sure the e-chain® ends with outer side links whenever possible. This is always the case with an odd number of links.

Strain reliefs

unassembled	assembled

For pivoting brackets

Same 2 parts set for all chain widths

Electrically conductive

Pre-assembled

Strain reliefs

Guide troughs

Steel guide troughs

A1. Profile rail length

Guide troughs are used for applications, for which the upper run of the e-chain® glides on the lower run. The following components are required when using the steel igus® guide trough.
Guide trough without glide bar Part No. 90.30,
Guide trough with glide bar Part No. 90.31
Installation set Part.No. 90.50. XX
.XX indicates the length of the C-profile on which the guide trough will be mounted. The standard length of the trough parts and glide rails is 2 m. The required length of guide trough is determined by the travel length. For restricted spaces, custom dimensions can be supplied


Part No. :
D [mm]:

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Part No. :

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Design specificationFurther information on "gliding application"

+ Easy assembly using installation sets
+ 2-part design - configurable from chain width
+ Very stable
+ cost-effective
+ large selection

Guide trough without glide bars, Part No. 90.30, guide trough with glide bars Part No. 90.31

Installation sets, Part No. 90.50. XX

Part List

Personal contact

GToB Imprint General notes Data protection declaration

hanging (max.) [m]	120
standing (max.) [m]	6
max. side-mounted, unsupported [m]	6
max. vertical, long travels [m]	450
circular	with reworking

Material of chain links	igumid G
Min. permissible temperature [°C]	-40
Max. permissible temperature [°C]	120
Gliding speed (max.) [m/s]	10
Max. gliding speed [m/s²]	50
Speed FLG max. [m/s]	20
Speed FLG max. [m/s²]	200
Speed FLB max. [m/s]	3
Speed FLB max. [m/s²]	6
Flammability class of chain link	VDE 0304 IIC UL94 HB

Series 840

Series 840 - chain, snap-open along both sides with crossbars every link

Installation dimensions

Unsupported length

Long travels

Other installation types

Technical specifications

Interior separation

Product range

Mounting brackets

Guide troughs

Part List