GRT Techflex®Belts

GRT TechFlex Belts are especially designed for heavy, highly abusive and demanding applications. They provide long service life and low cost per ton in applications where most plied belts have been proven unsuccessful.

Problem Solver Conveyor
• Straight warp single or dual unit construction provides flexibility and superior rip and impact resistance
• Tension ratings are 220, 330 and 440 PIW single unit, and 600, 800 and 1,000 PIW dual unit
• Ideal for applications such as log handling, riprap, ballast, hard rock, heavy ores and other difficult conditions
• Available as a made-to-order product using the cover compounds.

High-strength carcass construction
• Straight warp yarns in parallel planes with
special binder provide extra strength
• Strong mechanical and chemical bonding between compound and textile increases
strength
• Reinforcing eliminates need for multiple plies,
resulting in a thinner and more flexible belt

Extra flexibility
• Allows belt to operate over smaller pulleys
• Resists flex fatigue, lasts longer
• Easier to install in hard-to-access areas

Excellent rip and impact resistance
• Special weave design with fill yarns above and below warp yarns increases rip resistance
• Planes of straight fibers offer additional resistance to lump impact

Low stretch
• Straight warp weave stretches less than crimped weave fabrics
• Longer belt life

Superior troughing and load support
• Flexibility in carcass design ensures excellent empty belt troughing
• Parallel planes of straight crosswise members give strength and stability to bridge the idler roll gaps under full load

GRT TechFlex® I
Technical Data
Construction: Straight warp single unit
Material: All polyester
Tension ratings: 220-440 PIW†
Applications: Log handling, riprap, ballast, hard rock, heavy ores, etc.

GRT TechFlex® II
Technical Data
Construction: Straight warp double unit
Material: Polyester and nylon
Tension ratings: 600-1000 PIW
Applications: Log handling, riprap, ballast, hard rock, heavy ores, etc.

PIW=per inch of width

GRT TECHFLEX® Impact Resistance
Impact Guidelines
The impact resistance, based on inches of freefall, is calculated assuming the use of impact reduction equipment, such as impact idlers. If impact reduction equipment is not used, freefall inches must be reduced by one-half. Ratings are based on 10% lumps and 90% fines which includes material sizes up to 4 inches.

Optimum loading and material transfer design can lessen the force of impacting lumps on the belt and extend belt life.

Follow these industry-accepted design practices where applicable:
• Reduce the size or weight of the material.
• Break the fall of lumps with bars, chains, or chutes to reduce impact.
• Design loading system to insure the material is loaded in the same direction as the belt travel.
• Load lumps on a bed of fines to reduce impact.
• Do not load in transition areas.
• Use impact idlers and, if possible, design the loading area to strike the belt between idlers in an open unsupported span.
• Increase the belt cover thickness and use breakers in the cover or an extra ply, for increased impact resistance.