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Rubber Conveyor TEXTER® SIG

Name: Rubber Conveyor TEXTER® SIG
SKU: 7219
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Rubber Conveyor TEXTER® SIG; Wide selection of cover compounds; Very low permanent elongations; Maximum load support; High resistance to tear and cutting; Good impact resistance; Apt to mechanical fasteners; Humidity proof

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Rubber Conveyor TEXTER® SIG; Wide selection of cover compounds; Very low permanent elongations; Maximum load support; High resistance to tear and cutting; Good impact resistance; Apt to mechanical fasteners; Humidity proof

Texer Technical Data

Belt Style N/m	Number of plies	Max working tension		Carcassa		Fabric rangeN/mm
		Vulcanized	Fastened	Weight (Average)	Thickness (± 5%)
		N/mm	N/mm	Kg/m²	mm
250/2	2	25	20	2,2	1,9	125
315/2	2	32	25	2,7	2,3	160
400/3	3	40	32	3,3	2,9	125
500/3	3	50	40	4,1	3,5	160
500/4	4	50	40	4,4	3,8	125
630/3	3	63	50	4,9	4,0	200
630/4	4	63	50	5,4	4,6	160
800/3	3	80	63	6,0	4,9	250
800/4	4	80	63	6,5	5,4	200
1000/3	3	100	80	7,1	5,7	315
1000/4	4	100	80	8,0	6,4	250
1000/5	5	100	80	8,1	6,8	200
1250/3	3	125	–	9,0	6,9	400
1250/4	4	125	–	9,5	7,6	315
1250/5	5	125	–	10,0	8,0	250
1600/4	4	160	–	11,9	9,2	400
1600/5	5	160	–	11,9	9,5	315
2000/4	4	200	–	15,0	11,4	500
2000/5	5	200	–	15,0	11,4	400
2500/5	5	250	–	18,7	14,2	500
3150/6	6	315	–	22,3	17,4	500

Total thickness = Carcass thickness + Cover thickness

Total weight for m2 = Carcass weight (above table) + cover weight (below table)

Cover Weight kg/m²

Quality	Cover thickness
Quality	1 mm	2 mm	3 mm	4 mm	5 mm	6 mm	7 mm	8 mm
CL	1,18	2,36	3,54	4,72	5,90	7,08	8,26	9,44
EC	1,15	2,30	3,45	4,60	5,75	6,90	8,05	9,20
SC	1,12	2,24	3,36	4,48	5,60	6,72	7,84	8,96
AS	1,12	2,24	3,36	4,48	5,60	6,72	7,84	8,96
BS	1,30	2,60	3,90	5,20	6,50	7,80	9,10	10,40
AG	1,35	2,70	4,05	5,40	6,75	8,10	9,45	10,80
OH	1,25	2,50	3,75	5,00	6,25	7,50	8,75	10,00
OM	1,25	2,50	3,75	5,00	6,25	7,50	8,75	10,00
PL	1,25	2,50	3,75	5,00	6,25	7,50	8,75	10,00
CX	1,15	2,30	3,45	4,60	5,75	6,90	8,05	9,20
MX	1,15	2,30	3,45	4,60	5,75	6,90	8,05	9,20
TX	1,10	2,20	3,30	4,40	5,50	6,60	7,70	8,80

Transition Distance

The transition distance is the length of the section between head or tail pulley and the first troughing idler.

In some cases, intermediate idlers are placed along the transition distance to favour the passage of the belt from the flat to the trough shape.These conveyor sections are the most critical points of the whole plant as the elastic performances of the belt during the time depend on them.

If the transition distance is not correctly designed, high overtensions on the edges and abnormal compressions along the central axis of the belt are generated. Such phenomenon is the cause of unexpected defects, sometimes mistakenly attributed to the belt as wave on the edges and longitudinal fold of the belt carcass.

According to the recommendation of the international standard ISO 5293/81, the calculation of the transition distance is performed in order to prevent belt centre from buckling and edge tension from exceeding 30% of the maximum recommended belt tension (RMBT). These conditions can be respected adopting the following formula:

LT = 14,14 x V x K

Experimental trials, calculations and experiences have shown that average conditions of tension and compression are carried out with values of V equal to 1/2 V1.

Nevertheless, with larger sizes there is the tendency of backward rolling of the materials, for which in most cases values of V included between 2/3 and 4/5 of V1 are assumed.

So, the value of the transition distance LT can be easily calculated for TEXTER belts in the most typical installations, with idlers of equal length, by means of the following formula:

LT = L1 x B x K

where:

L1 = unitary transition distance

B = belt width

K = reduction factor depending on the working tension on the belt.

V =	Idler inclination
V =	20°	27 ¹⁄₂°	30°	35°	40°	45°
V₁	1,61	2,00	2,39	2,78	3,17	3,54
⁴⁄₅ V₁	1,29	1,60	1,91	2,23	2,54	2,83
³⁄₄ V₁	1,21	1,50	1,79	2,09	2,38	2,65
²⁄₃ V₁	1,08	1,34	1,60	1,86	2,12	2,37
¹⁄₂ V₁	0,80	1,00	1,20	1,39	1,59	1,77

“K” FACTOR

% RMBT	1	0,9	0,8	0,7	0,6	0,5	0,3	0,2	0,15	0,1	0,07	0,05
Service Factor	10	11	13	14	17	20	33	50	67	100	143	200
K multiplier factor	1	0,87	0,77	0,71	0,65	0,61	0,71	0,86	1,01	1,20	1,47	1,80

RMBT = Recommended Maximum Belt Tension

Minimum Recommended Pulley Diameter (mm)

Belt Style	% RMBT
	60% up to 100%			30% up to 60% Safety factor > 17			up to 30% Safety factor > 33
	A	B	C	A	B	C	A	B	C
250/2	250	200	160	200	160	125	160	160	125
315/2	250	200	160	200	160	125	160	160	125
400/3	315	250	200	250	200	160	200	200	160
500/3	400	315	250	315	250	200	250	250	200
500/4	500	400	315	400	315	250	315	315	250
630/3	500	400	315	400	315	250	315	315	250
630/4	500	400	315	400	315	250	315	315	250
800/3	630	500	400	500	400	315	400	400	315
800/4	630	500	400	500	400	315	400	400	315
1000/3	630	500	400	500	400	315	400	400	315
1000/4	800	630	500	630	500	400	500	500	400
1000/5	800	630	500	630	500	400	500	500	400
1250/3	800	630	500	630	500	400	500	500	400
1250/4	1000	800	630	800	630	500	630	630	500
1250/5	1000	800	630	800	630	500	630	630	500
1600/4	1000	800	630	800	630	500	630	630	500
1600/5	1250	1000	800	1000	800	630	800	800	630
2000/4	1250	1000	800	1000	800	630	800	800	630
2000/5	1250	1000	800	1000	800	630	800	800	630
2500/5	1600	1250	1000	1250	1000	800	1000	1000	800
3150/6	2000	1600	1250	1600	1250	1000	1250	1250	1000

Notes:

A = Drive and tripper pulleys;
B = Tail, return and take-up pulleys;
C = Snub pulleys.

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Advantages and Characteristics

Polyester – Nylon carcass
Reinforced cut edges
Excellent adhesion between plies and covers
Complete tension style
Wide selection of cover compounds
Very low permanent elongations
Maximum load support
High resistance to tear and cutting
Good impact resistance
Apt to mechanical fasteners
Humidity proof

Cover Characteristics

ABRASION SERVICE

CL (L grade ISO 10247 – Y grade DIN 22102 – RMA II grade) – Standard abrasion resistant compound. CL is a cover rubber recommended for all ground applications and for the majority part of the materials, where resistance to abrasion is required. Conveyor belts with CL compound are suitable to handle heavy and/or abrasive materials such as gravel, stone, sand, aggregates, coal, cement, etc.
EC (D grade ISO 10247 – W grade DIN 22102 – RMA I grade) – Extra abrasion resistant compound. EC is a superior quality cover rubber, especially designed where maximum resistance to abrasion is required. The characteristics of resistance to cut, tear and ozone cracking, together with long duration, improve the quality of this cover. EC is expressly recommended for steel works and iron mines; however, it is recommended for heavy lump ore, coke, salt, limestone too.
SC (H grade ISO 10247 – X grade DIN 22102) – Superior cutting resistance compound. SC is a cover rubber designed for specific use when the resistance to cut and tear is the most important requirement. SC also guarantees high abrasion resistance. Main applications are quartz and cullet conveyance.
AS – Rubber cover for extreme applications. AS rubber cover is studied to offer the maximum abrasion resistance in all the applications, where an increase in the standard abrasion resistant conveyor’s service life is required. Moreover, its excellent mechanical characteristics allow a superior tearing and cut resistance, which permits its use with heavy materials, i.e. big-sized minerals, bauxite, etc. or in critical working situations characterized by atypical loading/unloading systems. AS grants and surpasses grade W – DIN 22102 and D – ISO 10247 assuring an abrasion resistance of 30-50 mm3.

SELF-EXTINGUISH

BS – Self-extinguish compound. BS is a cover rubber designed to service both underground and above ground application where safety is fundamental and fire risk is high. It is recommended in particular for coal and potash applications. BS compound is self-extinguish and antistatic according ISO 340 and ISO 284, equivalent Grade K DIN 22102.
TS – Selfexstinguish compound. TS is a product typology designed to service both underground and above ground applications. It is highly recommended for the belt conveyors located in the back areas of the tunnels. TS is designed according to ISO 284 and ISO 340, equivalent Grade S DIN 22102.
TV – Fireproof compound. TV is a belt typology designed to work in underground applications where it is necessary that the belt does not burn and does not trigger centres of fire. It is recommended for the belt conveyors located close to the permanent work-stations in the tunnels. TV is designed according to ISO 284, ISO 340 and DIN 22100-1.
AG – Self-extinguish and oil resistant compound. AG is a nitrile rubber suitable for conveyor belts and bucket elevator systems of cereal terminals and silos. AG cover rubber provides superior resistances to vegetable oils and animal fats; it is also self-extinguish and antistatic according to ISO 340 and ISO 284, equivalent to K grade of DIN 22012 in order to guarantee high safety to the conveyor plant.

OIL SERVICE

OM (G grade DIN 22102) – Vegetable oil resistance compound. OM is a cover rubber that guarantees a good belt resistance against the chemically aggressive effects due to the transport of materials with moderate oil presence, like corn, fertilizers and general vegetable oily materials. OM is expressly designed to resist the terpene of wooden chips and to convey solid urban waste materials.
OH – High oil resistance compound. OH is a premium quality cover rubber with maximum resistance to oils and characterized by low volume variations after immersion in highly aggressive mineral oils. OH is expressly realized for belts conveying materials sodden with mineral oils, as for example the mechanical manufacturing rejects.
PL – Oil and heat resistant cover. PL is a covering compound designed specifically for the handling of petroleum coke during the production process where the material can reach temperatures of 120 ° C. The composition of the compound based on nitrile polymer also ensures good resistance to oils.

HEAT SERVICE

CX – Medium temperature resistance. CX is a rubber compound assuring a medium degree of abrasion resistance; it is formulated for continuous service with hot coarsematerials at a temperature of 130 °C with peaks of 150 °C.
MX – High temperature resistance. MX is a rubber compound assuring a good abrasion resistance. It is
designed for continous service at temperature of 150 °C with peaks of 180 °C.
TX – Superior temperature resistance. TX is a cover rubber that assures the maximum heat resistance for a rubber compound. It is designed to resist with coarse materials at a maximum working temperature of 200 °C with peaks of 300 °C.

All types of conveyor belts produced by SIG SpA are realized according to ISO standards; furthermore, they meet also the requirements of equivalent UNI, DIN, BS, NF, ASTM and RMA standards.

Cover Selection

	Abrasion service			Heat service			Heat service			Self extinguish
	CL	EC	AS	CX	MX	TX	PL	OM	OH	AG	BS
Abrasion	★★★	★★★★	★★★★	★★★	★★	★★★	★	★	★	★	★★★
Cut & tear	★★★	★★★★	★★★	★★	★★	★★	★★	★★	★★	★★	★★★
Fire	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	★★★★	★★★★
Animal & vegetable oils	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	★★★★	★★★★	★★★★	★★★★	N.A.
Mineral oils	N.A.	N.A.	N.A.	N.A.	N.A.	N.A.	★★	★★	★★★★	★★★	N.A.
CONTINUOUS WORKING SERVICE °C
	70	70	70	130	150	200	120	70	70	70	70
MAXIMUM PEAKS OF TEMPERATURE °C
	90	90	90	150	180	300	130	90	90	90	100
MINIMUM WORKING TEMPERATURES °C
	-40	-50	-40	-40	-40	-30	-30	-35	-25	-25	-40