Wood and Laminate Industry

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CARBO 24 Belts Will Help You to Optimize Your Production

Continuous reliability, maximum resistance and durability are the most important criteria, you have always been able to count on when using a Berndorf Band steel belt.

By developing CARBO 24, we have succeeded in optimizing these qualities even further on. Especially for the production of particleboard on single opening presses, the unique structure of a CARBO 24 belt offers the following advantages:

maximum tensile strength, hardness and yield point
highest fatigue strength under reversed bending stresses
timesaving installation
minimized downtime due to perfect weldability (patches, additional welding seam, etc.)
highly deformation resistant
optimal cross stiffness

We are sure that our know-how and CARBO 24 will help you to optimize also your production.

Continuous Reliability

More than 70 years ago - in the early years of the 20th century - Berndorf Band started with the development and the production of endless steel belts.

In 1970, in intensive cooperation with important machine manufacturers, Berndorf Band produced their first endless steel belts for the new generation of continuous presses. Due to new manufacturing methods Berndorf Band provided their partners in the wood and laminate industry with a high precision component, often mentioned as the “heart” of the system. Steady development, innovative manufacturing methods and new materials enable us to meet the special needs and requirements a customer might have. Additionally, our worldwide operating service network which is supported by the Service Center in Berndorf guarantees quick access to highly qualified specialists. Tradition coupled with innovation and our principle of manufacturing high quality products are the basis of our maxim “continuous reliability”; high quality final products, increased equipment availability and an extended lifetime of your steel belts are the result.

CARBO 24 in a single opening press

Berndorf Band manufacturing workshop

Technical Data

Physical and mechanical properties. Typical values.

Material			NICRO 12.1	NICRO 52	NICRO 52.6	NICRO 62.5	CARBO 13	CARBO 24
Type			CrNi 17 7	CrNiCuTi 15 7	CrNiCuTi 15 7	CrNiCu 15 5	Ck 67	-
Similar material		DIN	1.4310	-	-	-	1.1231	-
		AISI	301	-	-	-	-	-
Tensile strength	RT	N/mm2	1150	1150	1550	1450	1200	1420
0,2% yield offset strength	RT	N/mm2	950	1100	1500	1410	970	1320
Hardness		Rockwell HRC	37,0	37,0	47,5	46,0	36,0	44,5
		Vickers HV 10	360	360	480	460	350	440
Elongation 50 mm		%	18	8	6	8	8	6
Welding factor			0,70	0,95	0,80	0,75	0,80	0,75
Fatigue strength under	RT	N/mm2	480	500	700	650	450	550
reversed bending stress*)	at 20°C	N/mm2	200.000	200.000	200.000	200.000	210.000	210.000
Modulus in elasticity	200°C	N/mm2	180.000	-	-	-	-	-
		kg/dm3	7,90	7,74	7,74	7,80	7,85	7,85
Density	20-100°C	10-6m/m°C	16,0	10,9	10,9	10,8	11,1	12,0
Mean thermal	20-200°C	10-6m/m°C	17,0	11,5	11,5	10,8	11,9	12,5
expansion coefficient	20-300°C	10-6m/m°C	-	11,7	11,7	11,3	12,5	12,9
	20-400°C	10-6m/m°C	-	-	-	-	12,9	-
Specific heat		J/g°C	0,50	0,50	0,50	0,42	0,46	0,45
Thermal conductivity	at 20°C	W/m°C	15	16	16	16	46	40
Specific electric resistance	at 20°C	Ohm mm/m2	0,73	0,80	0,80	0,77	0,13	0,20
Max. permissible		°C	250	350	350	300	400	250
operating temperature		°F	480	660	660	572	750	480
Tensile strength at max. permissible oper. temp.		N/mm2	940	900	1250	1160	850	1300
Yield temp. - 0,2% offset strength at permissible oper. temp.		N/mm2	770	830	1180	1130	720	1100

*) 50% of the test specimens withstand 2,000,000 load cycles.
If not mentioned separately, indicated figures are valid at room temperature.
Data are stated without warranty and are subject to change as a result of technical developments.

Applications	Key Products	Process	Belt Material	Your Benefits
Constructional and furniture panels	Particleboards	Pressing	NICRO 52.6	Flatness
	MDF		NICRO 62.5	Axial straightness
	OSB		CARBO 13	Stability
	LVL		CARBO 24	Uniform thickness
Decorative laminates	Continuous pressed laminates	Pressing	NICRO 12.1	Stability
Technical laminates	MFC (Melamine faced chipboard)		NICRO 52	Surface quality

Berndorf Belt Systems USA • Berndorf Belt Technology USA
2525 Bath Road • Elgin, IL 60124
United States
US Phone: 1-800-393-8450 • Intl Phone: (1) 847-931-5264 • Fax: (1) 847-931-5299 • sales@berndorf-usa.com
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