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Product

Round rubber festoon cables0.6/1 kVDIN VDE 0250-814EPR / 5GM3 PCP

(N)GRDGÖU 0.6/1 kV Round EPR/PCP Rubber Crane Festoon CableHeavy-duty round EPR/polychloroprene rubber power and control festoon cable

Heavy-duty 0.6/1 kV round rubber crane festoon cable ((N)GRDGÖU-J/O / RONDOFLEX) to DIN VDE 0250-814 with Class 5 copper conductors, 3GI3 EPR insulation, GM1b EPR inner sheath and oil-, UV- and weather-resistant 5GM3 polychloroprene outer sheath.

Flame-retardant

Oil-resistant

Outdoor & humid

Ozone, UV & moisture

Cores × cross-section

Versions

Order designation: (N)GRDGÖU-J 4G16
OD min: 24.9 mm
OD max: 30.0 mm
Weight ≈: 1,330 kg/km
Min. bend R: 150 mm

Check against my drum All sizes (37)

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Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: 0.6/1 kV
Travel speed: 240 m/min
Bending radius: 5 × D
Flexing temp.: -35 to +80 °C
Max. conductor: +90 °C
Standard: VDE 0250-814

Typical values for this cable type, based on DIN VDE 0250-814 — confirmed in the datasheet and quotation for your order.

Application fit

Is (N)GRDGÖU right for your machine?

(N)GRDGÖU is the DIN VDE 0250-814 round rubber crane festoon cable engineered with a pressure-extruded GM1b EPR inner sheath and a heavy-duty 5GM3 polychloroprene outer jacket for high-frequency multi-plane bending.

Festoon & line chain

Suitable

Primary duty: indoor and outdoor overhead crane, port gantry and hoist festoon trolleys up to 240 m/min.

Energy chain / drag chain

Suitable

Suitable for power and control energy chains on cranes and material-handling transfer cars at ≥ 5 × D bending radius.

Use (N)GRDGCGÖU for EMC-screened chains

Motorised monospiral reel

With conditions

Approved for low-stress simple horizontal reeling operation within 15 N/mm² conductor tensile load.

Use NSHTÖU for heavy motorized reeling

Vertical / spreader reel

Not suitable

Not designed for vertical spreader reeling with high torsional stress.

Use 3GSLTÖ for vertical spreader baskets

Typical machinesContainer & port gantry cranesSteelworks & foundry overhead cranesBulk material handling & conveyorsMachine tool & transfer line trolleysOutdoor yard & ship-to-shore cranesHoisting gear & industrial lifts

Construction

Layer by layer

Shown: (N)GRDGÖU-J 4G16 — four Class 5 copper cores with 3GI3 EPR insulation stranded in short lay inside a GM1b EPR inner sheath and a black 5GM3 polychloroprene outer sheath.

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Conductor	Finely stranded bare or tinned copper, Class 5IEC 60228 / DIN VDE 0295 Class 5
2	Core insulation	EPR rubber compound 3GI3, light-coloured with black printed numbers (+ green-yellow in -J)DIN VDE 0207-20 · Stranded in max. 3 concentric layers
3	Inner sheath	EPR rubber compound type GM1b, pressure-extruded over core lay-upDIN VDE 0250-814 · Stabilises round profile under trolley saddle flexing
4	Outer sheath	Heavy-duty polychloroprene (PCP / CM) rubber compound 5GM3, blackDIN VDE 0207-21 · Oil-resistant EN 60811-404 · Flame-retardant IEC 60332-1-2

(N)GRDGÖU-J

With green-yellow protective earth conductor (4–36 cores)

(N)GRDGÖU-O

Without protective earth conductor (single-core & 3-core power)

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0250-814. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U: 0.6/1 kV (max. AC 0.7/1.2 kV · DC 0.9/1.8 kV)
AC test voltage: 3.5 kV (5 min)
Current rating basis: DIN VDE 0298-4 at 30 °C ambient in free air

Thermal

Max. conductor operating temperature: +90 °C
Max. short-circuit temperature (≤ 5 s): +250 °C
Ambient temperature — flexing / mobile: -35 to +80 °C
Ambient temperature — fixed installation: -50 to +80 °C

Mechanical

Max. travel speed: Up to 240 m/min in crane festoon systems
Max. tensile load on conductor: 15 N/mm²
Min. bending radius: 4 × D fixed · 5 × D (up to 6 × D) flexing per DIN VDE 0298-3

Reference standards

Reference standards: DIN VDE 0250-814 · DIN VDE 0298-3/-4 · IEC 60228 Class 5
Flame & chemical resistance: IEC 60332-1-2 · EN 60811-404 · UV, ozone & weather resistant

Sizes

Dimensions, weights & current ratings

37 unscreened (N)GRDGÖU-J/O single-core, power and control sizes (1.5 mm² to 185 mm²)

Dimensions & weights
Order designation	Cores × mm²	AWG ≈	OD min mm	OD max mm	Copper kg/km	Weight ≈ kg/km	Min. bend R mm	Max. pull N
All sizes
Single-core 25–185 mm²
(N)GRDGÖU-J 1G25	1 × 25	4	12.6	12.6	240	386	63	375
(N)GRDGÖU-J 1G35	1 × 35	2	13.9	14.1	336	493	71	525
(N)GRDGÖU-J 1G50	1 × 50	1	15.9	16.6	480	670	83	750
(N)GRDGÖU-J 1G70	1 × 70	2/0	17.9	18.5	672	900	93	1,050
(N)GRDGÖU-J 1G95	1 × 95	3/0	20.9	21.1	912	1,120	106	1,425
(N)GRDGÖU-J 1G120	1 × 120	4/0	22.8	22.8	1,152	1,430	114	1,800
(N)GRDGÖU-J 1G150	1 × 150	300 kcmil	24.5	24.9	1,440	1,740	125	2,250
(N)GRDGÖU-J 1G185	1 × 185	350 kcmil	27.8	27.9	1,776	2,150	140	2,775
3-core 4–50 mm²
(N)GRDGÖU-J 3G4	3 × 4	12	15.8	15.8	115	400	79	180
(N)GRDGÖU-J 3G6	3 × 6	10	17.0	17.0	173	490	85	270
(N)GRDGÖU-J 3G10	3 × 10	8	20.9	20.9	288	750	105	450
(N)GRDGÖU-J 3G16	3 × 16	6	24.3	24.3	461	1,050	122	720
(N)GRDGÖU-J 3G25	3 × 25	4	28.7	28.7	720	1,530	144	1,125
(N)GRDGÖU-J 3G35	3 × 35	2	32.7	32.7	1,008	2,020	164	1,575
(N)GRDGÖU-J 3G50	3 × 50	1	38.4	38.4	1,440	2,820	192	2,250
4-core 4–50 mm²
(N)GRDGÖU-J 4G4	4 × 4	12	15.5	18.8	154	459	94	240
(N)GRDGÖU-J 4G6	4 × 6	10	17.9	20.4	230	570	102	360
(N)GRDGÖU-J 4G10	4 × 10	8	20.2	24.5	384	890	123	600
(N)GRDGÖU-J 4G16	4 × 16	6	24.9	30.0	614	1,330	150	960
(N)GRDGÖU-J 4G25	4 × 25	4	29.9	35.2	960	1,950	176	1,500
(N)GRDGÖU-J 4G35	4 × 35	2	33.1	38.2	1,344	2,450	191	2,100
(N)GRDGÖU-J 4G50	4 × 50	1	38.7	44.8	1,920	3,450	224	3,000
5-core 4–25 mm²
(N)GRDGÖU-J 5G4	5 × 4	12	17.7	20.1	192	540	101	300
(N)GRDGÖU-J 5G6	5 × 6	10	19.5	22.6	288	720	113	450
(N)GRDGÖU-J 5G10	5 × 10	8	22.8	26.3	480	1,050	132	750
(N)GRDGÖU-J 5G16	5 × 16	6	27.6	32.3	768	1,580	162	1,200
(N)GRDGÖU-J 5G25	5 × 25	4	32.5	37.3	1,200	2,320	187	1,875
Control 12–36 cores
(N)GRDGÖU-J 12G1.5	12 × 1.5	16	18.2	20.8	173	600	104	270
(N)GRDGÖU-J 18G1.5	18 × 1.5	16	20.7	24.4	259	840	122	405
(N)GRDGÖU-J 24G1.5	24 × 1.5	16	24.1	29.3	346	1,160	147	540
(N)GRDGÖU-J 30G1.5	30 × 1.5	16	25.3	30.6	432	1,300	153	675
(N)GRDGÖU-J 36G1.5	36 × 1.5	16	27.6	32.9	518	1,510	165	810
(N)GRDGÖU-J 12G2.5	12 × 2.5	14	19.9	23.9	288	840	120	450
(N)GRDGÖU-J 18G2.5	18 × 2.5	14	23.5	29.5	432	1,240	148	675
(N)GRDGÖU-J 24G2.5	24 × 2.5	14	27.0	33.7	576	1,640	169	900
(N)GRDGÖU-J 30G2.5	30 × 2.5	14	29.4	35.3	720	1,850	177	1,125
(N)GRDGÖU-J 36G2.5	36 × 2.5	14	31.4	38.4	864	2,210	192	1,350

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Outer diameter range (OD min / OD max) spans DIN VDE 0250-814 factory tolerances; Min. bend R is 5 × D for flexible festoon operation.

Electrical & ampacity data
Cross-section mm²	AWG ≈	Max. R20 Ω/km	Current rating in air 30 °C, A	Short-circuit 1 s kA
1.5	16	13.3	23	0.21
2.5	14	7.98	30	0.36
4	12	4.95	41	0.57
6	10	3.3	53	0.86
10	8	1.91	74	1.43
16	6	1.21	99	2.29
25	4	0.78	131	3.58
35	2	0.554	162	5.01
50	1	0.386	202	7.15
70	2/0	0.272	250	10.01
95	3/0	0.206	301	13.59
120	4/0	0.161	352	17.16
150	300 kcmil	0.129	404	21.45
185	350 kcmil	0.106	461	26.46

Current ratings are stated per DIN VDE 0298-4 for 3 loaded cores at 30 °C ambient in free air; apply multicore grouping factors for ≥ 7 control cores.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Cable sizeDrum core diameter (mm)

Travel speed (m/min)

m/min

Cable length on drum (m)

Drum core 200 mm is below 300 mmUse a larger drum core or a smaller cable size

150 m/min ≤ 240 m/minWithin the rated travel speed

Minimum bending radius: 150 mm
Min. drum core diameter: ≈ 300 mm
Cable weight on drum: 79.8 kg
Copper content: 36.8 kg

Indicative only: based on the datasheet outer diameter and 5 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
AC voltage test	3.5 kV, 5 min	Every length
Conductor resistance	IEC 60228 / DIN VDE 0295 Class 5	Every length
Sample tests
Flame propagation	IEC 60332-1-2	Per batch
Oil resistance of sheath	EN 60811-404	Per compound batch

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

0.6/1 kVCE · LVDRoHS · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX (N)GRDGÖU-J 4G16 0.6/1 kV DIN VDE 0250-814 · CE · [year] · [metre mark]

Standard packing: 500 m on wooden drums or cut-to-length festoon sets
HS code: 8544.49

Technical documents

Downloads

PDF(N)GRDGÖU 0.6/1 kV Round EPR/PCP Rubber Crane Festoon Cable – technical datasheet37 sizes · construction, technical data, approvals XLSX(N)GRDGÖU spec data (Excel)All 37 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-20
Updated: 2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What is the structural advantage of (N)GRDGÖU over single-sheath H07RN-F in crane festoons?

Under DIN VDE 0250-814, (N)GRDGÖU features short-lay cores stranded in a maximum of three concentric layers inside a pressure-extruded GM1b EPR inner sheath and a heavy-duty 5GM3 polychloroprene outer sheath. The dual-sheath geometry prevents core corkscrewing during high-speed (up to 240 m/min) festoon loop stacking.

Does standard (N)GRDGÖU include a copper braid screen?

No. Standard (N)GRDGÖU-J and (N)GRDGÖU-O power and control sizes are unscreened, as confirmed by their copper weights (e.g. 614 kg/km for 4G16). For individually screened control cores or pairs specify (N)GRDGÖU-O(C), and for an overall EMC braid over the inner sheath specify (N)GRDGCGÖU.

Why are light-coloured numbered cores used in (N)GRDGÖU instead of black numbered cores?

DIN VDE 0250-814 specifies light-coloured 3GI3 EPR core insulation printed with high-contrast black numerals (plus a green-yellow core in -J versions) to improve legibility inside dimly lit crane junction boxes.

Can (N)GRDGÖU be used on motorized cable reels?

It is approved for simple, low-stress horizontal reeling within the 15 N/mm² conductor tensile limit, where torsional stress does not occur. For high-speed or vertical reeling with dynamic tension and torsion, select NSHTÖU or 3GSLTÖ.

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03Message for our engineers

Round Neoprene Festoon Cable for Cranes (N)GRDGÖU

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Reel & motion:
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