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TENSILE STRENGTH
Full belt tensile strengths are guaranteed and often exceed those built to our national standards.

LOW ELONGATION
Minimum belt elongation means minimum take-up requirement.

HIGH IMPACT RESISTANCE
Generally interply skim layers and impact absorbing fabric ensures a much greater capacity to flex without fracturing under high impact conditions.

MOISTURE RESISTANCE
All components of NRC Belting are improve to the effects of moisture.

RESISTANCE TO EDGE WEAR
Cut edge construction means that All Fabric ply across the width of belt. Fabric reinforced edges are much tougher than moulded edges produced by homogeneous rubber. NRC belting is normally supplied in cut edge construction unless specified.

HIGH RIP AND TEAR RESISTANCE

Heavy fabric ”weft” produces high tear resistance and superior fastener holding efficiency.
 
Step Lengths

BELT CLASS

NO. OF PILES

2

3

4

5

160

200

250

315

400

500

630

800

1000

1250

1600

2000

150

150

150

150

200

300

300

400

450

-

-

-

-

-

-

150

200

300

300

400

450

600

-

-

-

-

-

-

150

200

200

250

300

400

500

525

-

-

-

-

-

150

150

200

250

300

400

400

 
 
HIGH ADHESIONS
Specialised fabric treatment (RFL) produces the highest belt adhesion levels. This ensures maximum splice efficiencies and prevents failure due to flex fatigue.
 
Splicing Details  
 
   
* Splice Length= (n-1)*S B = Belt width (mm) For 2 ply belts
n = no, of plies z = Additional length required to splice Splice length = n-s
S = Step length (mm) endless (mm) = Splice Length + 0,3B  
 
HOT SPLICING CURING TABLE
SPLICE
THICKNESS (mm)
CURING TIME
(min)
TEMPERATURE
(0C)
Up to 6
6 - 12
13 - 20
21 - 26
25
30
35
45
145 + 50 (Thermostat)
145
145
145
 
Cold Splicing
- A substantial proportion of belt splices are carried out using cold splicing techniques.
- Provided the correct procedure is followed cold splices are suitable for most belt installations.
- Cold splices should not be used for belts operating in chemically aggressive environments or carrying hot materials.
 
Rolled Belt Diameters
The weight and size of roll must be given consideration for shipment convenience and handling on site. Roll diameter to width ration must be considered carefully. Recommended 3.5:1 to prevent handling and shipping difficulties.
 
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