What the NN200 Conveyor Belt Is
The NN200 Conveyor Belt is a fabric core belt built on nylon (polyamide) warp and weft cords. In the naming convention used across the conveyor industry, NN stands for nylon-nylon, and 200 refers to the nominal tensile strength of the carcass, usually expressed in N/mm per ply. That places it in the middle of the nylon belt family, above NN100 and below NN300 and NN400, and it is a common choice where a belt must absorb shock, resist fatigue, and still handle a long incline without the stiffness of a steel cord construction.
Buyers often encounter the same product under the equivalent name nylon conveyor belt or nylon fabric core belt. These terms describe one product, not different belts. The NN200 Conveyor Belt is frequently compared with an EP Conveyor Belt, which uses polyester warp and nylon weft; EP belts tend to hold length more stably, while nylon carcasses offer strong impact absorption and flex fatigue resistance. The comparison helps in selection but does not make the two interchangeable.
Construction and Cover Grades
The carcass is normally built from two to six plies of nylon fabric, bonded with rubber skim and protected by top and bottom covers. Cover thickness is stated as a pair, for example 4+2 mm or 6+2 mm, and the first figure is the carrying side. Cover compound selection matters as much as carcass strength: an Abrasion Resistant Conveyor Belt grade suits sharp crushed stone, a Heat Resistant Conveyor Belt grade suits clinker or sinter, and a Flame Retardant Conveyor Belt or Anti-Static Conveyor Belt grade is often requested for coal handling. Oil Resistant Conveyor Belt and Cold Resistant Conveyor Belt versions are available for specific duty.
Typical Sizes and Reference Data
Values below are common reference points, not fixed supply promises. Actual construction is confirmed per project design.
| Item | Common reference range |
|---|---|
| Belt width | B500, B650, B800, B1000, B1200, B1400, B1600, B1800, B2000 |
| Carcass plies | 2 to 6 plies |
| Cover thickness | 3+1.5, 4+2, 5+2, 6+2, 8+3 mm |
| Strength grade | NN100, NN200, NN300, NN400 |
Width should be matched to the conveyor design and material lump size rather than copied from another line. A 1200mm wide belt and a 650mm belt can both be correct in different plants, and belt width alone does not determine pulley shaft diameter. Drive pulley, tail pulley and bend pulley are separate components with their own diameters, and they are not interchangeable names.
Where It Fits in the Plant
Typical duty includes quarry and aggregate conveying, cement plant raw meal and clinker lines, power plant coal yards, and ore transport in iron ore, copper ore and gold mining operations. In underground coal mining, flame retardant and anti-static grades are usually specified instead of a plain black belt. The NN200 Conveyor Belt also appears in port ship loading systems, crushing circuits, and sand and stone plants where a Heavy-Duty Conveyor Belt carcass is needed but steel cord construction is not justified.
Supporting hardware matters to belt life. Idler roller alignment, conveyor pulley condition and conveyor bracket rigidity all affect tracking and edge wear. A poorly aligned conveyor pulley can shorten cover life even when the carcass grade is correct.
Buyer Checklist
- Confirm the required strength grade and number of plies with the conveyor designer, not by guesswork from belt width.
- State the material, lump size, temperature and any oil, acid or flame exposure so the cover compound is chosen correctly.
- Ask for cover thickness and carcass construction in writing, and check splice method compatibility.
- Review pulley diameters and troughing idler spacing against the selected belt, since these influence flexing and splice life.
- For steep inclines, consider a Chevron Conveyor Belt or Corrugated Sidewall Conveyor Belt rather than forcing a smooth belt beyond its angle limit.
For textile carcass belts in general, see our range of NN Conveyor Belt and Fabric Core Conveyor Belt options at conveyor-belt.example.com, and matching idler roller and conveyor pulley components. A properly specified NN200 belt, paired with sound pulleys and rollers, gives predictable service in demanding bulk handling duty.
