Product Catalogue
Rod Coverings
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Rod Coverings

DURABELT provides a wide range of rod coverings to match any crop protection requirement from bruise free handling of garlic bulbs and potatoes to preventing breakage of carrots. Table 7 below describes the five (5) different types of coverings available, the rod diameters they fit, and their performance characteristics.


Table 7: Steel Rod Coverings
Description Profile Part No. Material Rod O.D. Cover O.D. Characteristics
mm in mm in
Star 1017
1119		 Soft PVC 3/8
7/16		 .38
.43		 17
19		 .67
.75
  • Good crop protection
  • 33% more bruise protection than plastisol coated rods
CC 100 1124 Rubber 7/16 .43 24 .94
  • Very good crop protection
Bubble Top 10BT
11BT		 Urethane 3/8
7/16		 .38
.43		 19 .75
  • Excellent crop protection
Duraflex 10DFX
11DFX		 Urethane 3/8
7/16		 .38
.43		 19 .75
  • Excellent crop protection
  • Self cleaning action
  • Available with wings over rod ends
Soft Rubber Tube Rubber 3/8
7/16
1/2
5/8		 .38
.43
.50
.63		 17
19
22
25		 .67
.75
.87
.98
  • Good bruise protection

























DURABELT's soft PVC rod coverings are resistant to ultra-violet light degradation from the sun's rays and have excellent wear characteristics. They're designed to last and are very cost effective.

Looking for bruise free or gentle crop handling? DURABELT's Bubble Top or exclusive Duraflex covers - both made of long wearing urethane - give the best crop protection available.



Table 8: The Gap Chart - the gap(space) between rods for a given traction belt pitch
U/M Traction
Belt
Pitch		 Steel Rod O.D. (mm) : Covering O.D. (mm)*
10:00 C-Flex
10:17
SRT		 11:00 11:19
SRT		 11:24 Bubble
Top		 Duraflex 13:00
mm 28 18 11 17 9 4 9 9 15
in 1.10 .71 .43 .67 .35 .16 .35 .35 .59
mm 32 22 15 21 13 8 13 13 19
in 1.26 .87 .59 .83 .51 .31 .51 .51 .75
mm 33 23 16 22 14 9 14 14 20
in 1.30 .91 .63 .87 .55 .35 .55 .55 .79
mm 35 25 18 24 16 11 16 16 22
in 1.38 .98 .71 .94 .63 .43 .63 .63 .87
mm 36 26 19 25 17 12 17 17 23
in 1.42 1.02 .75 .98 .67 .47 .67 .67 .91
U/M Traction
Belt
Pitch		 Steel Rod O.D. (mm) : Covering O.D. (mm)*
10:00 C-Flex
10:17
SRT		 11:00 11:19
SRT		 11:24 Bubble
Top		 Duraflex 13:00
mm 40 30 23 29 21 16 21 21 27
in 1.57 1.18 .91 1.14 .83 .63 .83 .83 1.06
mm 42 32 25 31 23 18 23 23 29
in 1.65 1.26 .98 1.22 .91 .71 .91 .91 1.14
mm 45 35 28 34 26 21 26 26 32
in 1.77 1.38 1.10 1.34 1.02 .83 1.02 1.02 1.26
mm 50 40 33 39 31 26 31 31 37
in 1.97 1.57 1.30 1.54 1.22 1.02 1.22 1.22 1.46
mm 56 46 39 45 37 32 37 37 43
in 2.20 1.81 1.54 1.77 1.46 1.26 1.46 1.46 1.69
U/M Traction
Belt
Pitch		 Steel Rod O.D. (mm) : Covering O.D. (mm)*
10:00 C-Flex
10:17
SRT		 11:00 11:19
SRT		 11:24 Bubble
Top		 Duraflex 13:00
mm 60 50 43 49 41 36 41 41 47
in 2.36 1.97 1.69 1.93 1.61 1.42 1.61 1.61 1.85
mm 64 54 47 53 45 40 45 45 51
in 2.52 2.13 1.85 2.09 1.77 1.57 1.77 1.77 2.01














































* Example: 11:19 - 11mm (.43 in) Rod O.D.: 19mm (.75 in) O.D. Star Cover (see Table 7)
13:00 - 13mm (.50 in) Rod O.D. : No Cover

After selecting the type of covering and steel rod diameter desired, the proper belt pitch can be determined from the Gap Chart (Table 8) by looking under the selected rod/covering combination to find the desired gap between the rods and then across to the corresponding belt pitch.

It should be noted that the gap between dodged and straight rods will be slightly larger than shown in the chart.

Mix and match the rod coverings to create pockets or produce the effect of a small flight with dodged rods. A popular combination is star covered rods dodged down in sequence with a straight or dodged up Bubble Top covered rod (See Figure 8).



Figure 8: Typical Dodging Sequence - One (1) Straight Bubble Top with Three (3) Down Star Covered Rods

All belted chain assemblies with rod coverings using a low profile belt drive sprocket must be ordered with sprocket runs (see Figure 9). This prevents the rod covering from interfering with the drive sprocket teeth engaging the steel rods.

Belted chain assemblies using high profile belt drive sprockets or friction drive rollers can have the rod covering extended to the inside edge of the traction belting. This increases the cushioned surface area of the belted chain assembly.



Figure 9: Covered Rod Sprocket Run Allowance






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Page Modified August 22, 2006 by Yvonne Morrison
All Content © Durabelt Inc. 2000