PUR Flexible Control Cable for Drag Chain Applications High Flex Cycles Abrasion Resistant Manufacturer

Name: PUR Flexible Control Cable for Drag Chain Applications High Flex Cycles Abrasion Resistant Manufacturer
Rating: 4.5 (10 reviews)

Designed for continuous motion in drag chain applications, this PUR flexible control cable delivers stable performance under high-cycle bending, abrasion, and mechanical stress.

Key Benefits:

✅ ≥10 million flex cycles for long service life
✅ PUR jacket for superior abrasion and oil resistance
✅ Class 6 ultra-fine conductors for high flexibility
✅ Stable structure prevents deformation and failure

Description

PUR Flexible Control Cable for Drag Chain Applications High Flex Cycles Abrasion Resistant Manufacturer

The PUR flexible control cable is the most-specified cable format for drag chain (energy chain) systems in industrial automation — and also the most frequently misspecified. Choosing the wrong stranding class, the wrong lay length, or the wrong jacket compound for a drag chain installation produces failures that look like mechanical defects but originate in the cable’s construction.

Rousheng’s RST-DC series is engineered specifically for the mechanical demands of continuous-flex drag chain operation: fine-stranded oxygen-free copper conductors, foamed core fillers that maintain circular cross-section under repeated compression, and a polyurethane jacket compound formulated for abrasion resistance rather than simply for UV protection.

This page documents the three failure modes that end drag chain cable life prematurely, the construction parameters that prevent each one, a full product matrix with application-matched variants, and a selection guide that routes you to the correct RST-DC model for your specific machine axis.

Flex life	Jacket compound	Conductor class	Temp range	Standards
≥ 10,000,000	PUR 92 Shore A	IEC 60228 Class 6	−40 °C to +90 °C	UL 21 / CE / RoHS
Cycles at 4× OD bend radius	Abrasion & oil resistant	Ultra-fine stranding	Cold-flex to +90 °C rated	Halogen-free option

Three Failure Modes That End Drag Chain Cable Life — and How to Prevent Them

Failure mode 1: conductor work-hardening from incorrect stranding

The most common drag chain cable failure is also the hardest to diagnose in the field: a gradual increase in conductor resistance as fine copper wires work-harden at the bend reversal point. The conductor does not break immediately — it stiffens, loses elasticity, and eventually fractures after 200,000–500,000 cycles.

This failure mode is caused by using IEC 60228 Class 5 conductors — fine-stranded with 16–32 wires per core — in an application that requires Class 6 ultra-fine stranding (≥ 100 wires per core for 0.75 mm²). Class 5 is the standard for flexible cables; it is not adequate for drag chain systems cycling more than 200,000 times per year.

RST-DC conductors use IEC 60228 Class 6 stranding throughout: ≥ 196 wires for 0.75 mm², ≥ 280 wires for 1.5 mm². Individual wire diameter is ≤ 0.10 mm, keeping the bending stress per wire below the copper fatigue limit at 4× cable OD dynamic bend radius.

Failure mode 2: jacket cracking from abrasion contact with chain links

In a drag chain system, the cable lies in the chain trough and contacts the chain link interior surfaces at every direction change. A cable jacket formulated for static installation — standard PVC, for example — abrades through at the chain link contact points within 500,000–1,000,000 cycles depending on chain link geometry and lubrication.

The abrasion failure mechanism is different from UV degradation or chemical attack: it is a surface-wear process driven by repeated sliding contact under compressive load. Jacket hardness, surface texture, and friction coefficient all matter. PVC at 75 Shore A loses surface material rapidly under this condition. PUR at 90–95 Shore A resists the same contact load for 10× longer in direct abrasion tests at equivalent contact pressure.

RST-DC jacket compound is formulated at 92 Shore A — hard enough to resist chain link abrasion but soft enough to maintain flexibility at −40 °C without embrittlement. The jacket surface has a defined low-friction texture that reduces stick-slip contact with polished chain link surfaces.

Failure mode 3: cross-section collapse from incorrect core filler design

In a multi-core control cable, the spaces between circular conductors must be filled to maintain the cable’s circular cross-section under the compressive loads of drag chain operation. An unfilled or poorly filled cable collapses to an elliptical cross-section when compressed between chain links — the flat geometry causes the outer conductors to travel a longer path on each bend cycle than the inner conductors, producing differential flex fatigue that fractures conductors at the compression face.

RST-DC uses foamed PE filler elements sized and shaped to the specific conductor arrangement of each core count. The filler elements maintain the circular cross-section within ±2% ovality under the compressive loads specified in the DIN EN 60947-5-2 drag chain test standard. This is a designed geometry, not an incidental filling of voids.

PRODUCTION NOTE

In 2021, Rousheng’s application engineering team compared RST-DC cross-section ovality against a standard PVC flexible cable on a 2-million-cycle accelerated test at 4× OD bend radius and 80 N compressive load (simulating a 5-link stack in a 50 mm chain trough).

RST-DC: ovality maintained at 1.8% through 2 million cycles; no conductor failures. Standard flexible cable: ovality reached 12% at 400,000 cycles; three conductor fractures at 850,000 cycles.

RST-DC Series Product Matrix

PUR drag chain cable — standard configurations

Ten standard configurations covering control, signal, power, and combined variants. All models use IEC 60228 Class 6 conductors, PUR 92 Shore A jacket, and the foamed PE filler system described above. Parameters marked * are adjustable in ETO variants.

Model	Cores × mm²	Shielding	Flex life	Min bend R*	OD (mm)	Temp °C	Jacket / special
RST-DC-110	4 × 0.34 mm²	None	≥10M cycles	4× OD dyn.	5.8±0.3	−40 / +90	PUR std.
RST-DC-120	4 × 0.75 mm²	None	≥10M cycles	4× OD dyn.	7.2±0.3	−40 / +90	PUR std.
RST-DC-130	7 × 0.75 mm²	None	≥10M cycles	4× OD dyn.	9.0±0.3	−40 / +90	PUR std.
RST-DC-140	12 × 0.75 mm²	None	≥10M cycles	4× OD dyn.	11.5±0.4	−40 / +90	PUR std.
RST-DC-210	4 × 0.34 mm²	Overall Cu braid	≥10M cycles	7.5× OD dyn.	7.0±0.3	−40 / +90	PUR EMC
RST-DC-220	4 × 0.75 mm²	Overall Cu braid	≥10M cycles	7.5× OD dyn.	8.8±0.3	−40 / +90	PUR EMC
RST-DC-230	12 × 0.75 mm²	Overall Cu braid	≥10M cycles	7.5× OD dyn.	13.5±0.4	−40 / +90	PUR EMC
RST-DC-310	3 × 1.5 mm²	None	≥5M cycles	4× OD dyn.	9.5±0.4	−40 / +90	PUR heavy-duty
RST-DC-320	3×1.5+4×0.75 mm²	Overall Cu braid	≥5M cycles	7.5× OD dyn.	13.0±0.4	−40 / +90	PUR combined
RST-DC-410	4 × 0.75 mm²	None	≥8M cycles	4× OD dyn.	7.8±0.3	−25 / +80	LSZH clean-room
RST-DC-C (ETO)	Per spec	Per spec	Per design	Per design	4–30 mm	Per jacket	PUR/LSZH/TPE

Flex life note: 10M cycles applies to all control cable models (RST-DC-1xx, 2xx, 4xx) at 4× OD dynamic bend radius and 0.1 m/s traverse speed. RST-DC-3xx power cables are rated 5M cycles due to the higher conductor cross-section increasing bending stiffness. LSZH model (RST-DC-410) is rated 8M cycles — LSZH compounds are less elastic than PUR at the same hardness grade.

Complete Technical Specification

Conductor construction — Class 6 ultra-fine stranding

Parameter	Specification
Conductor standard	IEC 60228 Class 6 — ultra-fine stranding for maximum flex fatigue life
Wire count per core	0.34 mm²: ≥ 130 wires · 0.75 mm²: ≥ 196 wires · 1.5 mm²: ≥ 280 wires · 2.5 mm²: ≥ 380 wires
Individual wire diameter	≤ 0.10 mm (0.34–0.75 mm²); ≤ 0.12 mm (1.5–2.5 mm²). Below the copper fatigue threshold at 4× OD dynamic bend radius; validated by fatigue life calculation per IEC 60228 Annex A
Conductor material	Oxygen-free copper (OFC) per ASTM B170; tin-plated option available for oil-immersion or high-humidity environments
Lay length	Controlled lay length 8–12× conductor OD; shorter lay = higher flex life but higher DC resistance; RST-DC uses 10× OD optimum for drag chain applications
DC resistance (at 20 °C)	0.34 mm²: ≤ 56.0 Ω/km · 0.75 mm²: ≤ 25.5 Ω/km · 1.5 mm²: ≤ 13.7 Ω/km · 2.5 mm²: ≤ 8.21 Ω/km

Insulation and core identification

Parameter	Specification
Insulation compound	Semi-rigid PVC (standard); XLPE (oil-resistant, 90 °C rated); LSZH for clean-room / semiconductor applications
Insulation wall thickness	0.34 mm²: 0.4 mm · 0.75 mm²: 0.5 mm · 1.5 mm²: 0.6 mm · 2.5 mm²: 0.7 mm; thin wall maintains cable flexibility while providing 300 V rated insulation
Voltage rating	300/500 V AC (control cables); 450/750 V AC (RST-DC-3xx power variants); withstand test 2,000 V AC / 1 min
Core identification	Colour-coded per IEC 60446 (PE: green-yellow; N: blue; L: brown; remaining: black with white numbering). Numbering printed at 50 mm intervals, readable through 10M flex cycles.
Core lay	Cores stranded in concentric layers with reverse lay between layers; reverse lay prevents layer-to-layer unlaying during flex that causes uneven stress distribution

Shielding options for EMC-sensitive drag chain applications

Shielded models (RST-DC-2xx and RST-DC-320) are specified in applications where the drag chain cable runs adjacent to servo drives, variable-frequency drives, or other sources of high-frequency electromagnetic interference.

Parameter	Specification
Shield type	Tinned copper braid, ≥ 85% optical coverage; spiral wrap available ETO for higher coverage (95%) at reduced flex life (8M cycles)
Transfer impedance	< 50 mΩ/m at 1 MHz (braid); < 25 mΩ/m at 1 MHz (spiral + braid ETO); measured per IEC 62153-4-3
Min bend radius (shielded)	7.5× OD dynamic; 3.5× OD static. Shielding braid adds torsional stiffness — shielded models cannot use the 4× OD minimum of unshielded variants
Shield continuity under flex	Transfer impedance verified at 0, 1M, 5M, and 10M cycle checkpoints; must remain < 50 mΩ/m throughout. Braid breakage produces a characteristic spike in the TI frequency curve that is distinguishable from cable-end contact resistance

PUR jacket — abrasion resistance data

The PUR jacket is the primary mechanical protection layer. Its performance under abrasion contact with chain link surfaces determines when the cable requires replacement in a correctly designed drag chain system.

Parameter	Specification
Compound	Polyurethane (PUR) 92 Shore A; ether-type PUR for oil resistance; oil immersion test per IEC 60811-2-1 Group 2 fluids; tensile retention ≥ 80% after 7-day immersion
Abrasion resistance	Taber abrasion: 15 mg/1000 cycles (CS-10 wheel, 500 g); versus PVC standard at 65 mg/1000 cycles. RST-DC jacket removes 4.3× less mass per 1000 abrasion cycles under equivalent contact load
Operating temperature	−40 °C to +90 °C continuous; cold-flex test at −40 °C: no cracking at 4× OD (IEC 60811-1-4); short-term excursion to +105 °C (15 min) permissible
Chemical resistance	Mineral oil, hydraulic oil, cutting fluid (oil-water emulsion), weak acids (pH ≥ 4), caustic solutions (pH ≤ 10); not resistant to concentrated aromatic solvents, ketones, or concentrated acids
Flame retardancy	IEC 60332-1 (single cable); LSZH variant meets IEC 60332-3-22 and EN 50575 Class Eca; halogen-free per IEC 60754-1
Surface friction coefficient	Dynamic friction vs polished steel: μ = 0.28 ± 0.03 at 0.1 m/s traverse speed; low-friction surface texture reduces stick-slip contact with chain link interior

Mechanical flex parameters

Parameter	Specification
Flex life (unshielded)	≥ 10,000,000 cycles at 4× OD dynamic bend radius; criterion: no conductor break, resistance change < 10%, no jacket cracking
Flex life (shielded)	≥ 10,000,000 cycles at 7.5× OD; transfer impedance < 50 mΩ/m maintained throughout
Min dynamic bend radius	Unshielded: 4× OD · Shielded: 7.5× OD · Power variants (RST-DC-3xx): 5× OD unshielded, 10× OD shielded
Max traverse speed	Standard: 5 m/s · High-speed ETO (reinforced filler): 10 m/s · At speed > 5 m/s, centrifugal loading of the cable in the chain trough requires filler elements bonded to the jacket inner surface to prevent core migration
Max acceleration	50 m/s² standard; 100 m/s² ETO high-acceleration variant with Kevlar tensile member
Torsion resistance	RST-DC is a pure flex cable, not a torsion cable. For applications with combined flex and torsion (robot arm twist axes), specify RST-DC-C ETO with torsion-rated helical conductor lay

Drag Chain Installation Design: Parameters That Determine Cable Life

How drag chain geometry affects PUR flexible control cable service life

Drag chain cable life is determined as much by the chain installation geometry as by the cable’s own flex rating. A cable rated for 10,000,000 cycles will fail in 500,000 cycles if the chain radius is below the cable’s minimum dynamic bend radius, or if the chain trough is too wide for the cable OD — allowing the cable to cross-wind between cycles.

The following parameters must be confirmed before specifying cable model and OD. Rousheng’s application engineering team reviews chain geometry drawings and confirms the RST-DC model and fill ratio before order confirmation — this review is provided at no charge.

Chain radius and cable minimum bend radius

The chain’s inner radius at the bend point must be ≥ the cable’s minimum dynamic bend radius. For RST-DC unshielded models: minimum dynamic bend radius = 4× cable OD. For a 7.2 mm OD cable (RST-DC-120), the minimum chain inner radius is 4 × 7.2 = 28.8 mm.

If the chain radius is below this value, the cable’s bend stress exceeds the conductor fatigue limit regardless of how many flex cycles the cable is rated for. Cable life in this condition is unpredictable and typically falls below 200,000 cycles.

Chain trough width and cable fill ratio

In a multi-cable drag chain, the total cable cross-section must not exceed 60% of the chain trough’s cross-sectional area. This is the standard fill ratio that allows cables to rearrange during direction changes without binding.

Below 60% fill: cables slide freely in the trough and do not exert excessive compressive force on adjacent cables. Above 60% fill: cables bind against each other and the chain link walls during direction change, generating compressive loads that accelerate jacket abrasion and cross-section ovality.

Cable separation and fixing intervals

RST-DC cables must be fixed at the chain’s fixed end with a cable clamp applying 60–80% of the cable OD as clamping width — tight enough to prevent cable migration into the chain during rapid retraction, loose enough not to deform the circular cross-section.

At the moving end, allow a service loop of 150–200% of the cable OD before the clamp. This loop absorbs the small amount of longitudinal migration that occurs in every cable during flex cycling — preventing the cable from being placed in tension as it reaches the end of stroke.

DESIGN RULE SUMMARY

1. Chain inner radius ≥ cable minimum dynamic bend radius (4× OD unshielded; 7.5× OD shielded)

2. Total cable fill ≤ 60% of chain trough cross-sectional area

3. Fixed-end clamp width: 60–80% of cable OD; 60–80 N clamping force

4. Moving-end service loop: 1.5–2.0× cable OD before the clamp

5. Do not bundle cables with cable ties inside the chain trough — ties create local compression points that accelerate abrasion

Application Selection Guide

Choosing the right flexible control cable for your drag chain axis

The RST-DC model is determined by four parameters: signal type (control or power), EMC shielding requirement, installation environment (oil, clean-room, standard), and cycle rate / traverse speed. The table below maps common machine axis types to the recommended model.

Machine axis type	Signal type	EMC required	Recommended model	Selection rationale
CNC linear axis (X/Y/Z)	Control 24 V DC	Yes (servo drive nearby)	RST-DC-220	4 × 0.75 mm² covers limit switches, tool changer signals, and encoder screen connections; overall braid shields against servo drive EMI
Pick-and-place robot (SCARA)	Control + 24 V power	Yes	RST-DC-230	12 × 0.75 mm² covers all I/O in a single cable; 10M cycle rating at 13.5 mm OD — verify chain inner radius ≥ 101 mm for shielded model
Conveyor transfer carriage	Control only	No (low-noise environment)	RST-DC-130	7 × 0.75 mm² adequate for carriage position, sensor, and valve signals; unshielded reduces OD to 9.0 mm, fitting smaller chain troughs
Gantry crane (horizontal traverse)	Power + control	Optional	RST-DC-320	3 × 1.5 mm² power + 4 × 0.75 mm² control in single cable; reduces chain trough occupancy versus two separate cables; 5M cycle rating adequate for crane duty (≤ 200 moves/hr)
Semiconductor handling robot	Control + signal	Yes (strict EMC)	RST-DC-410 (LSZH)	LSZH jacket required for clean-room and fab environments; no halogen outgassing; 8M cycle rating at 4× OD; confirm chain radius ≥ 31.2 mm (4 × 7.8 mm OD)
High-speed linear motor axis (> 3 m/s)	Control + encoder	Yes	RST-DC-C ETO	Standard RST-DC is rated to 5 m/s. Above 3 m/s, centrifugal loading requires bonded-filler ETO design. Specify traverse speed, stroke length, and acceleration in enquiry

Jacket Material Comparison: PUR vs PVC vs TPE for Drag Chain Applications

Why PUR outperforms PVC and TPE as a drag chain cable jacket

The jacket compound comparison below is drawn from Rousheng’s accelerated wear testing programme. All three materials were tested on the same cable core assembly in the same chain trough geometry at the same traverse speed and compressive load.

Property	PUR (RST-DC standard)	PVC (generic flex cable)	TPE (thermoplastic elastomer)
Abrasion resistance	15 mg / 1,000 cycles (Taber CS-10, 500 g)	65 mg / 1,000 cycles	28 mg / 1,000 cycles
Cold flex (−40 °C)	No cracking at 4× OD per IEC 60811-1-4	Cracks at −25 °C at 4× OD	No cracking at −30 °C
Oil resistance	Excellent — ether-type PUR; tensile retention ≥ 80% after 7-day immersion	Moderate — oil causes plasticiser migration in PVC over 6–12 months	Good — TPE resists most mineral oils
Flex life at 4× OD	≥ 10M cycles (RST-DC series)	1–3M cycles typical (stiffens as plasticiser migrates)	4–8M cycles (softer than PUR; more compressible in chain trough)
Halogen content	Halogen-free; IEC 60754-1 compliant	Contains chlorine — not halogen-free	Halogen-free
Cost vs PUR	Baseline (100%)	60–70% of PUR	80–90% of PUR
Recommendation	Default for all drag chain applications with ≥ 1M cycle requirement or oil exposure	Not recommended for drag chain applications; adequate for static-flex installation only	Suitable for medium-duty drag chain (< 4M cycles); lower cost alternative where oil exposure is absent

Common Drag Chain Cable Installation Failures: Causes and Corrections

Field diagnostic guide for flexible control cable failures in drag chains

These failure patterns are identified from Rousheng’s field service records. Each includes the measurable threshold at which the failure becomes detectable.

Symptom	Root cause	Measurable threshold	Correction
Intermittent signal loss at end of stroke	Conductor work-hardening — Class 5 stranding specified instead of Class 6	Resistance increase > 10% at bend reversal point vs straight section	Replace with Class 6 (≥ 196 wires/core for 0.75 mm²). Verify by measuring per-core resistance with Kelvin bridge at full bend vs straight — Class 5 shows > 10% resistance increase at 500,000 cycles; Class 6 remains within 2%.
Jacket worn through at chain link contact points	Cable fill ratio too high (> 60%) — cables under compressive load from adjacent cables	Visible abrasion wear within 200,000 cycles	Calculate total cable cross-section fill ratio. If > 60%: split into two chain troughs, increase chain width, or reduce cable count. PVC jacket accelerates abrasion 4× faster than PUR — confirm jacket compound if sourcing from multiple suppliers.
Cable corkscrew — cable twists in trough during flex	Cable installed with pre-existing twist, or torsional side-load from misaligned chain end clamps	Visible twist after 10,000 cycles; cable exits trough at direction-change point	Unroll RST-DC cable from drum — do not pull from coil end (introduces twist). Verify both end clamps are aligned with the chain direction of travel to within ±3°. Torsion applications require RST-DC-C ETO torsion variant.
Cross-section collapse — cable becomes oval, fits loosely in chain trough	Fill ratio too low (< 30%) — cable migrates laterally and folds in trough	Ovality > 10% measured with calliper at bend point after 100,000 cycles	Minimum fill ratio is 30% — too loose is as problematic as too tight. Use spacers between cables to maintain position, or select a smaller chain trough width. Alternatively, increase cable OD to match trough dimensions.
Shielded cable EMC performance degrades after 2–3M cycles	Braid shield wire breakage at bend reversal — exceeded shielded minimum bend radius (7.5× OD)	Transfer impedance rises above 100 mΩ/m at 1 MHz	Verify chain inner radius ≥ 7.5× cable OD for shielded models. If chain radius cannot be increased: use RST-DC-C ETO with spiral-wound inner shield (maintains lower transfer impedance at tighter bend radii, 8M cycle rating at 6× OD).

Frequently Asked Questions

What is the difference between a PUR flexible control cable and a standard PVC flexible cable?

PVC flexible cables (Class 5 stranding, 65–75 Shore A jacket) are designed for occasional flexing — installation bending, periodic repositioning. They are not drag chain cables. The differences that matter for drag chain applications: Class 6 versus Class 5 stranding (4× the wire count, far lower bend stress per wire); PUR 92 Shore A versus PVC 75 Shore A jacket (4× abrasion resistance at equivalent contact load); foamed PE filler versus void filling (cross-section ovality control under compressive load). In drag chain applications, a PVC flexible cable typically fails in 500,000–1,000,000 cycles. RST-DC is rated 10,000,000.

How do I calculate the minimum chain inner radius for my RST-DC cable?

Multiply the cable OD by the minimum dynamic bend radius factor. For unshielded RST-DC models: minimum chain inner radius = 4 × cable OD. For shielded models: 7.5 × cable OD. For power variants (RST-DC-3xx): 5 × cable OD unshielded, 10 × cable OD shielded. Example: RST-DC-220 shielded, OD 8.8 mm — minimum chain inner radius = 7.5 × 8.8 = 66 mm. If your chain has a tighter radius, contact our engineering team for an ETO design with a smaller outer diameter or a torsion-capable construction.

Can RST-DC cables be used in robot arm torsion axes as well as drag chains?

Standard RST-DC models are designed for single-axis flex — bend reversal in one plane, no torsion. Robot arm axes that combine flexing with rotation (wrist joints, twist axes) generate torsional loading that the helical conductor lay in a standard drag chain cable cannot accommodate. For combined flex-and-torsion applications, specify RST-DC-C ETO with torsion-rated construction (modified lay length, Kevlar tensile member, alternative filler geometry). Describe the joint motion type and the required flex angle and rotation angle in your enquiry.

What is the maximum traverse speed the RST-DC series supports?

Standard RST-DC models are rated to 5 m/s traverse speed. Above 3 m/s, centrifugal acceleration of the cable in the chain trough exerts lateral forces on the cable that cause core migration within the jacket if the filler elements are not bonded. The standard RST-DC uses unbonded foamed PE fillers — adequate to 5 m/s. For traverse speeds above 5 m/s (up to 10 m/s), an ETO high-speed variant with bonded fillers and a reinforced outer jacket is available. Specify traverse speed, stroke length, and acceleration in your enquiry.

Is RST-DC cable available with halogen-free insulation for clean-room applications?

Yes — RST-DC-410 uses an LSZH outer jacket and halogen-free insulation throughout. It is rated 8M flex cycles at 4× OD (compared to 10M for PUR models — LSZH compounds are less elastic than PUR at equivalent hardness). The LSZH jacket complies with IEC 60754-1 for halogen content (< 0.5% HCl equivalent) and IEC 61034-2 for smoke density (≥ 60% light transmission). RST-DC-410 is the standard specification for semiconductor fab, pharmaceutical, and food-processing drag chain installations where no halogen outgassing is permitted.

Request Samples, Test Data, or a Quotation

How to get the right flexible control cable specified for your drag chain

Rousheng provides a free application engineering review — chain geometry confirmation, bend radius check, and fill ratio calculation — before order placement. Cable samples with flex life test data and abrasion test report are available on request. For a complete single-reply response, include:

Machine axis type and brief description of the motion (traverse speed, stroke length, cycle rate)
Chain make and model if known, or inner radius, trough width, and number of cables
Core count and cross-section required (or list of signals / currents to be carried)
EMC shielding requirement: yes/no; if yes, interference source type (servo drive, VFD, other)
Installation environment: standard industrial, oil-immersion, clean-room, outdoor
Traverse speed (m/s) and peak acceleration (m/s²)
Required service life in cycles or years at stated cycle rate
Jacket compound preference: PUR (default), LSZH, or TPE