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 |