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Flexible connections in robotic and moving lines

Short answer

In robotic applications, hose selection is based on the direction and number of repeated movements and on the routing. Static bend radius information alone does not show adequate performance under multi-axis motion or continuous torsion.

Source: S017, S031

Technical explanation

Manufacturer routing principles emphasize preventing torsion and bending the hose in the appropriate plane. In moving applications, the end connection orientation, support points and slack length are evaluated together. Using a cable carrier or protective system does not automatically make the hose suitable for that arrangement. Dynamic use and repeated motion limits must be verified for the specific product.

Source: S017, S031

Topic-specific checkpoints

ItemDescription
MotionAxes, speed and cycle pattern
GeometryConnection orientation, length and supports
ProductManufacturer limits for dynamic use
VerificationRepresentative motion and recorded observations

Source: S017, S031

How to evaluate it in practice

Examine the robot's motion scenarios without limiting them to the two extreme positions. Record the positions where the hose is pulled, pinched or rotates about its own axis. Share the actual motion data with the manufacturer to evaluate suitability. Prepare marks and assembly instructions so that the connection orientation is preserved on replacement. Record trial results together with the cycle conditions; do not present short-term trouble-free movement as a guarantee of long life.

Original editorial recommendation; not a clause of a standard.

Frequently asked questions

If the minimum bend radius is met, is use on a robot definitely suitable?

No. Torsion, tension, direction of motion and dynamic performance must be evaluated separately.

Source: S017, S031

Source coverage

  1. S017
    Parker Safety Guide, Publication 4400-B.1 Parker Hannifin · accessed 2026-10-20 PDF page 3; 3.7 Minimum Bend Radius, 3.8 Twist Angle and Orientation and 3.13 RoutingPDF page 2; 2.8 Routing, 2.10 Mechanical Loads and 2.11 Physical Damage | PDF page 2; 2.13 LengthPDF page 2; 2.8 Routing, 2.10 Mechanical Loads and 2.11 Physical Damage
  2. S031
    Hydraulics in Action: Maximizing Hose Lifetime Continental · accessed 2026-10-19 Optimizing Hose Routing for Longevity

A205 · Revision 5 · Content date 2026-10-20 · Published 2026-10-20 · Translated from the Turkish original.