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U.S. RUBBER CORPORATION 211 NORTH LOOP 336 E., CONROE TX 77301 SALES 800-872-587 |
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U.S. RUBBER CORP. |
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GRAIN SERVICE PREFERRED CONVEYOR BELTING |
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US Rubber Corp’s Grain Handling belt provides exceptionally low electrical resistance while maintaining a maximum level of oil resistance ensuring a high level of performance in the tough operating conditions at grain handling facilities. Our heavy duty Load Star poly/nylon fabric provides exceptional resistance to bolt pull-out along with very low elongation resulting in reduced downtime and extended belt life. |
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Manufactured in the USA |
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Page 5 |
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GRAIN SERVICE CONVEYOR BELTS |
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GRAIN SERVICE PREFERRED (SCORF)
A premium Static conductive, Oil Resistant, Flame retardant compound designed to provide reliable service to all grain markets.
These rubber compounds have superior oil resistance. The rubber meets ASTM D378-10-13-2 requirements. They also meets OSHA static conductive requirements. Recommended service temperature -30 to 200 degrees F.
US Rubber Corp. manufactures all name retardant belting to requirements set forth by the code of Federal Regulations, Title 30, Section 18.65 part (2-G), administered by the Mine Safety and Health Administration ASTM D378 committee.
The static conductivity of these compounds exceeds the requirements as set forth by OSHA; tested by ISO 284 and EN13462-1 procedures.
U.S. Rubber Corp. Flame Retardant / Anti-static belting products are certified by Mine Safety and Health Administration: Corporate designation 28/81. |
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U.S. RUBBER CORP. |
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U.S. RUBBER CORPORATION 211 NORTH LOOP 336 E., CONROE TX 77301 SALES 800-872-3587 |
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CONVEYOR BELTING |
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GRAIN SERVICE PREFERRED |
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Manufactured in the USA |
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U.S. RUBBER CORP. LOAD STAR SPECIFICATIONS |
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U.S. RUBBER CORPORATION 211 NORTH LOOP 336 E., CONROE TX 77301 SALES 800-872-3587 |
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U.S. RUBBER CORP. LOAD STAR SPECIFICATIONS |
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U.S. RUBBER CORPORATION 211 NORTH LOOP 336 E., CONROE TX 77301 SALES 800-872-3587 |
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· Minimum pulley diameters are dependent on the type of splice, fastener used, belt tension and belt tension required. · Troughabilly and Load Support can be dependent on cover gauges and compounds used. · Impact rating is based on the use of proper rubber impact idlers or bed plus proper loading and transfer conditions. Rating are based on 10% lumps and 90% fines or sized material up to 4" lumps. If proper impact idlers or beds are not used, impact rating is downgraded by half or less depending upon the conditions. |
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LOAD STAR |
FABRIC STYLE |
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LOAD STAR 110 |
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LOAD STAR 125 |
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LOAD STAR 150 |
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SPECIFICATIONS |
BELT STYLE |
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2-220 |
3-330 |
4-440 |
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2-250 |
3-375 |
4-500 |
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2-300 |
3-450 |
4-600 |
5-750 |
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Number of Plies |
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2 |
3 |
4 |
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2 |
3 |
4 |
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2 |
3 |
4 |
5 |
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Working Strength PIW |
Mechanical |
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220 |
330 |
440 |
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250 |
375 |
500 |
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300 |
450 |
600 |
750 |
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Rating pounds PIW |
Vulcanized |
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220 |
330 |
440 |
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250 |
375 |
500 |
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330 |
500 |
660 |
830 |
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Approx. Carcass Gauge |
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|
.116 |
.165 |
.215 |
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.128 |
.186 |
.247 |
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.160 |
.206 |
.280 |
.354 |
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Approx. Carcass Wt. PlW/ft |
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|
.060 |
.080 |
.115 |
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060 |
.092 |
.130 |
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.105 |
.115 |
.152 |
.192 |
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Average Cover Wt. per 1/16" |
Gauge PIW/ft. |
|
.033 |
.033 |
.033 |
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.033 |
.033 |
.033 |
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.033 |
.033 |
.033 |
.033 |
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Impact Rating (Foot-Pounds) |
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460 |
665 |
875 |
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490 |
728 |
1031 |
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680 |
994 |
1310 |
1497 |
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CONVEYOR BELT CRITERIA |
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MINIMUM PULLEY DIAMETER |
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81-100% TENSION |
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16" |
18" |
24" |
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16" |
18" |
24" |
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16" |
22" |
28" |
30" |
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61-80% TENSION |
|
14" |
16" |
20" |
|
14" |
16" |
20" |
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14" |
18" |
22" |
24" |
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UP TO 60% TENSION |
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10" |
12" |
16" |
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12" |
14" |
18" |
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12" |
16" |
20" |
20" |
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MINIMUM BELT WIDTH FOR EMPTY BELT TROUGHING |
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20 Degree Idlers |
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16" |
24" |
30" |
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16" |
24" |
30" |
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18" |
24" |
30" |
36" |
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35 Degree Idlers |
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18" |
24" |
30" |
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18" |
24" |
30" |
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24" |
30" |
36" |
36" |
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45 Degree Idlers |
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30" |
30" |
36" |
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24" |
30" |
36" |
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24" |
30" |
36" |
42" |
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MAXIMUM BELT WIDTH FOR LOAD SUPPORT |
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20 Degree Idlers |
0-40 |
#/CU.FT. |
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54" |
66" |
72" |
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54" |
72" |
72" |
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72" |
72" |
72" |
72" |
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|
|
41-80 |
#/CU.FT. |
|
42" |
60" |
72" |
|
48" |
60" |
72" |
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60" |
66" |
72" |
72" |
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|
|
81-120 |
#/CU.FT. |
|
42" |
54" |
72" |
|
42" |
54" |
72" |
|
54" |
60" |
72" |
72" |
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|
|
Over 120 |
#/CU.FT. |
|
36" |
48" |
60" |
|
36" |
48" |
60" |
|
48" |
54" |
66" |
72" |
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35 Degree Idlers |
0-40 |
#/CU.FT. |
|
48" |
60" |
72" |
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48" |
60" |
72" |
|
60" |
66" |
72" |
72" |
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|
|
|
|
41-80 |
#/CU.FT. |
|
42" |
54" |
66" |
|
42" |
60" |
60" |
|
54" |
60" |
72" |
72" |
|
|
|
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81-120 |
#/CU.FT. |
|
36" |
48" |
60" |
|
42" |
54" |
60" |
|
48" |
54" |
66" |
72" |
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|
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Over 120 |
#/CU.FT. |
|
30" |
42" |
54" |
|
30" |
42" |
54" |
|
42" |
48" |
60" |
66" |
|
45 Degree Idlers |
0-40 |
#/CU.FT. |
|
48" |
54" |
72" |
|
48" |
54" |
72" |
|
60" |
60" |
72" |
72" |
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|
|
|
|
41-80 |
#/CU.FT. |
|
36" |
48" |
60" |
|
36" |
48" |
54" |
|
48" |
54" |
66" |
72" |
|
|
|
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81-120 |
#/CU.FT. |
|
30" |
42" |
54" |
|
30" |
48" |
54" |
|
42" |
48" |
60" |
66" |
|
|
|
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Over 120 |
#/CU.FT. |
|
30" |
36" |
48" |
|
NR |
36" |
48" |
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36" |
42" |
54" |
60" |
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ELEVATOR BELT CRITERIA |
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ELEVATOR TENSION RATINGS (PIW) |
|
190 |
280 |
370 |
|
200 |
290 |
385 |
|
260 |
390 |
520 |
645 |
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MINIMUM PULLEY DIAMETERS |
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81-100% Tension |
|
18" |
18" |
24" |
|
16" |
18" |
24" |
|
18" |
22" |
30" |
36" |
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61-80% Tension |
|
16" |
16" |
20" |
|
14" |
16" |
22" |
|
16" |
20" |
24" |
30" |
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Up to 60% Tension |
|
12" |
14" |
18" |
|
12" |
14" |
20" |
|
14" |
18" |
20" |
24" |
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MAXIMUM BUCKET PROJECTION |
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100# 'CU.FT.l" OR LESS |
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Spaced Industrial |
|
6" |
7" |
10" |
|
7" |
8" |
10" |
|
7" |
9" |
10" |
11" |
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Continuous Industrial |
|
5" |
7" |
l 0" |
|
6" |
8" |
10" |
|
7" |
9" |
12" |
14" |
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LOAD STAR 200 |
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LOAD STAR 250 |
|
LOAD STAR 300 |
|
LOAD STAR 300 |
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|
2-400 |
3-600 |
4-800 |
5-1000 |
6-1200 |
|
2-500 |
3-750 |
4-1000 |
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2-600 |
3-900 |
4-1200 |
5-1500 |
|
2-800 |
3-1200 |
4-1600 |
|
2 |
3 |
4 |
5 |
6 |
|
2 |
3 |
4 |
|
2 |
3 |
4 |
5 |
|
2 |
3 |
4 |
|
400 |
600 |
800 |
1000 |
1200 |
|
500 |
750 |
1000 |
|
600 |
900 |
1200 |
1500 |
|
800 |
1200 |
1600 |
|
440 |
660 |
880 |
1100 |
1320 |
|
550 |
825 |
1100 |
|
660 |
990 |
1320 |
1650 |
|
880 |
1320 |
1760 |
|
.163 |
.225 |
.300 |
.379 |
.453 |
|
.200 |
.280 |
.380 |
|
.240 |
.370 |
.510 |
.660 |
|
.300 |
.450 |
.630 |
|
.105 |
.115 |
.152 |
.194 |
.235 |
|
.108 |
.152 |
.206 |
|
.130 |
.200 |
.276 |
.358 |
|
.164 |
.244 |
.341 |
|
.033 |
.033 |
.033 |
.033 |
.033 |
|
.033 |
.033 |
.033 |
|
.033 |
.033 |
.033 |
.033 |
|
.033 |
.033 |
.033 |
|
805 |
1000 |
1135 |
1220 |
1290 |
|
915 |
1115 |
1165 |
|
930 |
1130 |
1240 |
1300 |
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|
18” |
24” |
30” |
36” |
42” |
|
24” |
30” |
36” |
|
22” |
36” |
42” |
45” |
|
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|
|
16” |
20” |
24” |
30” |
36” |
|
20” |
24” |
30” |
|
18” |
30” |
33” |
40” |
|
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|
|
14” |
18” |
20” |
24” |
30” |
|
18” |
20” |
24” |
|
16” |
26” |
30” |
33” |
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24” |
30” |
36” |
42” |
48” |
|
30” |
36” |
42” |
|
30” |
42” |
48” |
54” |
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30” |
30” |
36” |
42” |
48” |
|
36” |
36” |
42” |
|
30” |
42” |
48” |
54” |
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|
|
30” |
36” |
42” |
48” |
54” |
|
36” |
42” |
48” |
|
36” |
48” |
54” |
60” |
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66” |
72” |
72” |
72” |
72” |
|
72” |
72” |
72” |
|
72” |
72” |
72” |
72” |
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|
60” |
72” |
72” |
72” |
72” |
|
66” |
72” |
72” |
|
72” |
72” |
72” |
72” |
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54” |
72” |
72” |
72” |
72” |
|
60” |
72” |
72” |
|
60” |
72” |
72” |
72” |
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|
48” |
60” |
72” |
72” |
72” |
|
54” |
60” |
72” |
|
54” |
60” |
72” |
72” |
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66” |
72” |
72” |
72” |
72” |
|
72” |
72” |
72” |
|
72” |
72” |
72” |
72” |
|
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60” |
60” |
72” |
72” |
72” |
|
66” |
66” |
72” |
|
60” |
72” |
72” |
72” |
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54” |
60” |
72” |
72” |
72” |
|
60” |
66” |
72” |
|
54” |
72” |
72” |
72” |
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|
48” |
54” |
60” |
66” |
72” |
|
54” |
60” |
72” |
|
48” |
60” |
72” |
72” |
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|
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60” |
72” |
72” |
72” |
72” |
|
66” |
66” |
72” |
|
72” |
66” |
72” |
72” |
|
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|
|
54” |
54” |
72” |
72” |
72” |
|
60” |
66” |
72” |
|
54” |
60” |
72” |
72” |
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48” |
54” |
60” |
72” |
72” |
|
54” |
54” |
72” |
|
48” |
60” |
72” |
72” |
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42” |
48” |
54” |
60” |
72” |
|
48” |
48” |
72” |
|
42” |
54” |
72” |
72” |
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|
345 |
520 |
690 |
870 |
1030 |
|
425 |
630 |
850 |
|
520 |
755 |
1015 |
1215 |
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22” |
26” |
36” |
42” |
48” |
|
26” |
32” |
42” |
|
24” |
36” |
45” |
54” |
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20” |
24” |
30” |
36” |
42” |
|
24” |
28” |
36” |
|
22” |
30” |
38” |
48” |
|
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|
18” |
22” |
24” |
30” |
36” |
|
22” |
26” |
30” |
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20” |
28” |
33” |
42” |
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9” |
10” |
11” |
12” |
12” |
|
10” |
11” |
12” |
|
10” |
11” |
12” |
12” |
|
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9” |
12” |
14” |
16” |
20” |
|
11” |
14” |
16” |
|
8” |
13” |
16” |
18” |
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