Series E4.21 - Chain, snap open on both sides with crossbars at every link

1. Straight run through inner-/outer-link design
2. Low-noise operation due to integrated brake on the radial stop dogs
3. The tongue and groove design facilitates very high stiffness and load capacity in the presence of shear forces
4. 15% more tensile strength (compared to the best old Series E4), extended unsupported length due to improved stop dog system and vertical radial stop dogs
5.e-chain® links removable on both sides
6. Cable-friendly, wide polymer crossbars
7. Optimized gliding surfaces - long service life
8. Smooth outline, dirt repellent
9. Interior separation in many versions
10. Strain relief with strain relief separators in the mounting bracket are available
11. Mounting brackets pivoting on one side with all-round attachment option
12. e-chains® also available with reverse bending radius "RBR"
Series E4.21 available in the ESD & ATEX product range
Series E4.21 are suitable for the following types of applications:

Vertical: Hanging applications ≤ 40 m, Standing applications ≤ 3 m
Horizontal:Unsupported applications ≤ 2,5 m, Gliding applications≤ 120 m
Moving applications:Circular motions: Rotating applications possible, may require retrofit (machining retrofit is always needed starting at 180° rotational angle)

When to use Series E4.21

When you need a rugged e-chain® with 21 mm inner height

When inner width up to 140 mm must be implemented
For unsupported lengths up to 2.5 m and fill weight up to 4.0 kg/m
For long travels up to 120 m
Also for the side, turned suitable standing and hanging applications
When you need many options and accessories
When a crossbar with locking function is desired

When not to use Series E4.21

When the e-chain® needs to be extremely quiet with low vibration
Series E3.22
When the e-chain® is used in cleanrooms (ISO Class 1)
Series E3.22
When a one-sided snap-open e-chain®/e-tube is required for economic reasons
Series 1400 , Series 1500 , Series 1450 , Series 1480

Series R117 , Series R118