43
XTRA-GRIP CONVEYOR BELT DATA - Metric
XTRA-GRIP rated belt tension can exceed 100%, with a maximum of 150%, during starting and stopping conditions. Fastener size recommendation may vary due to cover thickness,
pulley diameters and system tension. Consult your GTM or fastener manufacturer.
*
P/P = Poly/Poly P/N = Poly/Nylon
**
Average Permanent elongation values at 100% of rated belt tension are based on ISO 9856 test procedure. Consult your GTM or GAD for elastic & total elongation calculations.
XTRA-GRIP LOAD SUPPORT (Maximum Belt Width) (mm)
On systems with troughing idler spacing greater than 1.5 m OR idler roll gap greater than 12.7mm, consult your GTM.
XTRA-GRIP TROUGHABILITY (Minimum Belt Width) (mm) (Table based on ISO 703 Testing Procedure)
XTRA-GRIP MINIMUM PULLEY DIAMETERS (mm)
PIW/Plies
Material Weight
0-40
lbs/cu.ft.
41-80
lbs/cu.ft.
81-120
lbs/cu.ft.
81-120
lbs/cu.ft.
Trough Idlers
20
deg 35 deg 45 deg 20 deg 35 deg
45
deg 20 deg 35 deg
45
deg
20
deg
35
deg
45
deg
220/2
1200
1050
900
1200
900
900
1050
900
750
900
750
NR
250/2
1400
1200 1200
1200
1050
900
1050
1050
750
900
750
NR
330/3
1550
1400
1200
1500
1200
1050
1400
1200
1050
1200
1050
900
375/3
1850
1550
1550
1550
1550
1200
1400
1400
1200
1200
1050
900
X T R A - G R I
P
™
If top cover and pulley cover are balanced (ie. 5mm x 5mm) or less than 2 mm differential (ie. 4mm x 3mm), add 150 mm to the minimum belt width.
150
mm narrower widths are possible if the belt is broken in for an extended period of time fully loaded. Consult your GTM.
Additional break in time is required when the belt has been stored prior to insulation in ambient temperatures of less than 10 degrees Centigrade.
Above tables are based on top cover gauge equal or greater than the bottom (pulley) cover gauge
XTRA-GRIP XTRA-GRIP XTRA-GRIP XTRA-GRIP
220/2
250/2
330/3
375/3
Number of Plies
2
2
3
3
Fabric Type*
P/P
P/N
P/P
P/N
Vulcanized & Fastener Rating (kN/m)
39
44
58
66
Carcass Gauge (mm)
3.0
3.3
4.1
4.3
Carcass Weight (kg/sq.m)
3.5
3.7
4.8
4.9
Approx 1 mm cover wt (kg/sq.m)
1.2
1.2
1.2
1.2
Avg. Permanent Elongation (%) **
0.8
0.8
0.8
0.8
Elastic modulus (kN/m)
4,030
5,250
6,040
7,880
Step Length (mm)
250
250
250
250
Recommended Plate Fastener
140
190
190
BR-10
Hinge
R2
R5
R2
R5
Hinge
U35A
U35A
U35A
U35
XTRA-GRIP XTRA-GRIP XTRA-GRIP XTRA-GRIP
Idlers
220/2
250/2
330/3
375/3
20
degree idlers
450
450
450
500
35
degree idlers
450
450
600
600
45
degree idlers
600
600
750
750
XTRA-GRIP XTRA-GRIP XTRA-GRIP XTRA-GRIP
Specifications
220/2
250/2
330/3
375/3
Over 80% Tension
400
400
400
450
60%
to 80% Tension
350
350
350
400
40%
to 60% Tension
300
300
300
350
Up to 40% Tension
250
300
250
350
Tails and Snubs
250
300
250
350