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Text Box: Fastener selection is based on belt thickness, pulley diameters and working tension of the belt. Please refer to fastener manufacturer's specifications for proper fastener selection.

U.S. RUBBER CORP.

LOAD STAR SPECIFICATIONS

U.S. RUBBER CORPORATION  211 NORTH LOOP 336 E.,  CONROE TX  77301       SALES 800-872-3587

U.S. RUBBER CORP.

LOAD STAR SPECIFICATIONS

U.S. RUBBER CORPORATION  211 NORTH LOOP 336 E.,  CONROE TX  77301       SALES 800-872-3587

· 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.

Text Box:

U.S. RUBBER CORPORATION  211 NORTH LOOP 336 E.,  CONROE TX  77301       SALES 800-872-3587

U.S. RUBBER CORP.

GENERAL PURPOSE AGGREGATE

CONVEYOR BELTING

 

 

 

Excellent  heavy  duty  conveyor belt for high performance and tough applications.  Covers are designed for greater life and cost savings for the customer.

LOADSTAR ADVANTAGES

10:1 Service Factor Poly/Nylon carcass

Low Elongation Less than 2% at 100% working tension.

Premium "wet" application strength.

Premium fastener holding capabilities.

Premium impact and tear resistance.

Excellent troughability.

US RUBBER OVER 30 YEARS

SERVICING THE INDUSTRY

Manufactured in the USA

GENERAL PURPOSE BELTING

GENERAL PURPOSE

Superior Quality

 

Every U.S. Rubber Corp. belt is designed to provide excellent service life and deliver the lowest cost per ton conveyed. Only premium polymers and select additives are utilized to prepare compounds that are customer tested and "proven" in belting applications throughout the world.

 

U.S. Rubber Corp. researches, designs, tests and mixes all of its compounds at the Conroe, Texas, facility; providing our customers with fresh, reliable, state of the art compounds for all of their conveying needs.

RUBSTONE Super Abrasion Resistant (SAR)

Recommended for applications where severe abrasion is a concern.  Ideally suited for crushed stone, trap rock, copper or gold ore, sinter, coke, log handling,  primary crushers and other abrasive materials.  Recommended service temperature -30 to 200 degrees F.

    GRADE I

This is a premium rubber compound designed for exceptional resistance to cutting, gouging  and tearing caused by the impact of heavy or sharp materials or the combination of both.

 

This compound exceeds RMA's new Grade I requirements by a considerable margin. Recommended for transporting heavy slab ores, quartz, trap rock, granite, glass culler, ballast and similar products. Recommended service temperature -30 to 200 degrees F.

GRADE II

Recommended  for the majority of surface, non-oily/hi heat applications.   USR Grade II compounds approach  RMA's new Grade I  requirements. 

 

Suited for conveying slag, lime rock, coal, bauxite, limestone, crushed rock, sand and other abrasive materials. Recommended service temperature  -25 to 180 degrees F.

U.S. RUBBER CORP.

AGGREGATE

CONVEYOR BELTING

Text Box:

U.S. RUBBER CORPORATION  211 NORTH LOOP 336 E.,  CONROE TX  77301       SALES 800-872-3587

Manufactured in the USA

Text Box:
Text Box: Fastener selection is based on belt thickness, pulley diameters and working tension of the belt. Please refer to fastener manufacturer's specifications for proper fastener selection.

U.S. RUBBER CORP.

LOAD STAR SPECIAL REQUEST SIZES

U.S. RUBBER CORPORATION  211 NORTH LOOP 336 E.,  CONROE TX  77301       SALES 800-872-3587

LOAD STAR

FABRIC STYLE

 

LOAD STAR 110

 

LOAD STAR 125

 

LOAD STAR 150

SPECIFICATIONS

BELT STYLE

 

2-220

3-330

4-440

 

2-250

3-375

4-500

 

2-300

3-450

4-600

5-750

Number of Plies

 

 

2

3

4

 

2

3

4

 

2

3

4

5

Working Strength PIW

Mechanical

 

220

330

440

 

250

375

500

 

300

450

600

750

Rating pounds PIW

Vulcanized

 

220

330

440

 

250

375

500

 

330

500

660

830

Approx. Carcass Gauge

 

 

.116

.165

.215

 

.128

.186

.247

 

.160

.206

.280

.354

Approx. Carcass Wt. PlW/ft

 

 

.060

.080

.115

 

060

.092

.130

 

.105

.115

.152

.192

Average Cover Wt. per 1/16"

Gauge PIW/ft.

 

.033

.033

.033

 

.033

.033

.033

 

.033

.033

.033

.033

Impact Rating (Foot-Pounds)

 

 

460

665

875

 

490

728

1031

 

680

994

1310

1497

CONVEYOR BELT CRITERIA

 

 

 

 

 

 

 

 

 

 

 

 

 

MINIMUM PULLEY DIAMETER

 

 

 

 

 

 

 

 

 

 

 

 

 

81-100% TENSION

 

16"

18"

24"

 

16"

18"

24"

 

16"

22"

28"

30"

61-80% TENSION

 

14"

16"

20"

 

14"

16"

20"

 

14"

18"

22"

24"

UP TO 60% TENSION

 

10"

12"

16"

 

12"

14"

18"

 

12"

16"

20"

20"

MINIMUM BELT  WIDTH  FOR EMPTY BELT TROUGHING

 

 

 

 

 

 

 

 

 

20 Degree Idlers

 

16"

24"

30"

 

16"

24"

30"

 

18"

24"

30"

36"

35 Degree Idlers

 

18"

24"

30"

 

18"

24"

30"

 

24"

30"

36"

36"

45 Degree Idlers

 

30"

30"

36"

 

24"

30"

36"

 

24"

30"

36"

42"

MAXIMUM BELT  WIDTH  FOR LOAD SUPPORT

 

 

 

 

 

 

 

 

 

20 Degree Idlers

0-40

#/CU.FT.

 

54"

66"

 72"

 

54"

72"

72"

 

72"

72"

72"

72"

 

41-80

#/CU.FT.

 

42"

60"

72"

 

48"

60"

72"

 

60"

66"

72"

72"

 

81-120

#/CU.FT.

 

42"

54"

72"

 

42"

54"

72"

 

54"

60"

72"

72"

 

Over 120

#/CU.FT.

 

36"

48"

60"

 

36"

48"

60"

 

48"

54"

66"

72"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35 Degree Idlers

0-40

#/CU.FT.

 

48"

60"

72"

 

48"

60"

72"

 

60"

66"

72"

72"

 

 

 

41-80

#/CU.FT.

 

42"

54"

66"

 

42"

60"

60"

 

54"

60"

72"

72"

 

 

 

81-120

#/CU.FT.

 

36"

48"

60"

 

42"

54"

60"

 

48"

54"

66"

72"

 

 

 

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"

 

 

 

41-80

#/CU.FT.

 

36"

48"

60"

 

36"

48"

54"

 

48"

54"

66"

72"

 

 

 

81-120

#/CU.FT.

 

30"

42"

54"

 

30"

48"

54"

 

42"

48"

60"

66"

 

 

 

Over 120

#/CU.FT.

 

30"

36"

48"

 

NR

36"

48"

 

36"

42"

54"

60"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELEVATOR BELT CRITERIA

 

 

 

 

 

 

 

 

 

 

 

 

 

ELEVATOR TENSION RATINGS (PIW)

 

190

280

370

 

200

290

385

 

260

390

520

645

MINIMUM PULLEY DIAMETERS

 

 

 

 

 

 

 

 

 

 

 

 

 

81-100% Tension

 

18"

18"

24"

 

16"

18"

24"

 

18"

22"

30"

36"

61-80%     Tension

 

16"

16"

20"

 

14"

16"

22"

 

16"

20"

24"

30"

Up to 60% Tension

 

12"

14"

18"

 

12"

14"

20"

 

14"

18"

20"

24"

MAXIMUM BUCKET PROJECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

100# 'CU.FT.l" OR LESS

 

 

 

 

 

 

 

 

 

 

 

 

 

Spaced Industrial

 

6"

7"

10"

 

7"

8"

10"

 

7"

9"

10"

11"

Continuous Industrial

 

5"

7"

l 0"

 

6"

8"

10"

 

7"

9"

12"

14"

LOAD STAR 200

 

LOAD STAR 250

 

LOAD STAR 300

 

LOAD STAR 300

2-400 

3-600  

4-800

5-1000

6-1200

 

2-500

3-750

4-1000

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18”

24”

30”

36”

42”

 

24”

30”

36”

 

22”

36”

42”

45”

 

 

 

 

16”

20”

24”

30”

36”

 

20”

24”

30”

 

18”

30”

33”

40”

 

 

 

 

14”

18”

20”

24”

30”

 

18”

20”

24”

 

16”

26”

30”

33”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24”

30”

36”

42”

48”

 

30”

36”

42”

 

30”

42”

48”

54”

 

 

 

 

30”

30”

36”

42”

48”

 

36”

36”

42”

 

30”

42”

48”

54”

 

 

 

 

30”

36”

42”

48”

54”

 

36”

42”

48”

 

36”

48”

54”

60”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66”

72”

72”

72”

72”

 

72”

72”

72”

 

72”

72”

72”

72”

 

 

 

 

60”

72”

72”

72”

72”

 

66”

72”

72”

 

72”

72”

72”

72”

 

 

 

 

54”

72”

72”

72”

72”

 

60”

72”

72”

 

60”

72”

72”

72”

 

 

 

 

48”

60”

72”

72”

72”

 

54”

60”

72”

 

54”

60”

72”

72”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

66”

72”

72”

72”

72”

 

72”

72”

72”

 

72”

72”

72”

72”

 

 

 

 

60”

60”

72”

72”

72”

 

66”

66”

72”

 

60”

72”

72”

72”

 

 

 

 

54”

60”

72”

72”

72”

 

60”

66”

72”

 

54”

72”

72”

72”

 

 

 

 

48”

54”

60”

66”

72”

 

54”

60”

72”

 

48”

60”

72”

72”

 

 

 

 

60”

72”

72”

72”

72”

 

66”

66”

72”

 

72”

66”

72”

72”

 

 

 

 

54”

54”

72”

72”

72”

 

60”

66”

72”

 

54”

60”

72”

72”

 

 

 

 

48”

54”

60”

72”

72”

 

54”

54”

72”

 

48”

60”

72”

72”

 

 

 

 

42”

48”

54”

60”

72”

 

48”

48”

72”

 

42”

54”

72”

72”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

345

520

690

870

1030

 

425

630

850

 

520

755

1015

1215

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

22”

26”

36”

42”

48”

 

26”

32”

42”

 

24”

36”

45”

54”

 

 

 

 

20”

24”

30”

36”

42”

 

24”

28”

36”

 

22”

30”

38”

48”

 

 

 

 

18”

22”

24”

30”

36”

 

22”

26”

30”

 

20”

28”

33”

42”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10”

11”

12”

12”

 

10”

11”

12”

 

10”

11”

12”

12”

 

 

 

 

12”

14”

16”

20”

 

11”

14”

16”

 

13”

16”

18”

 

 

 

 

LOAD STAR DOUBLE UNIT

FABRIC STYLE

 

LOAD STAR XT

 

LOAD STAR XT

 

 

SPECIFICATIONS

BELT STYLE

 

2-440

2-550

2-660

 

2-800

2-1000

 

 

 

 

 

 

Number of Plies

 

 

2

2

2

 

2

2

 

 

 

 

 

 

Working Strength PIW

Mechanical

 

400

500

600

 

720

900

 

 

 

 

 

 

Rating pounds PIW

Vulcanized

 

440

550

660

 

800

1000

 

 

 

 

 

 

Approx. Carcass Gauge

 

 

.219

.257

.281

 

.302

.333

 

 

 

 

 

 

Approx. Carcass Wt. PlW/ft

 

 

.100

.112

.119

 

.134

.147

 

 

 

 

 

 

Average Cover Wt. per 1/16"

Gauge PIW/ft.

 

.033

.033

.033

 

.033

.033

 

 

 

 

 

 

Impact Rating (Foot-Pounds)

 

 

1307

1415

1807

 

2002

2450

 

 

 

 

 

 

CONVEYOR BELT CRITERIA

 

 

 

 

 

 

 

 

 

 

 

 

 

MINIMUM PULLEY DIAMETER

 

 

 

 

 

 

 

 

 

 

 

 

 

81-100% TENSION

 

30”

30”

30”

 

36”

42”

 

 

 

 

 

 

61-80% TENSION

 

24”

24”

24”

 

30”

36”

 

 

 

 

 

 

UP TO 60% TENSION

 

20”

20”

20”

 

24”

30”

 

 

 

 

 

 

MINIMUM BELT  WIDTH  FOR EMPTY BELT TROUGHING

 

 

 

 

 

 

 

 

 

20 Degree Idlers

 

24”

24”

24”

 

30”

30”

 

 

 

 

 

 

35 Degree Idlers

 

30”

30”

30”

 

36”

36”

 

 

 

 

 

 

45 Degree Idlers

 

36”

36”

36”

 

42”

42”

 

 

 

 

 

 

MAXIMUM BELT  WIDTH  FOR LOAD SUPPORT

 

 

 

 

 

 

 

 

 

20 Degree Idlers

0-40

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

41-80

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

81-120

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

Over 120

#/CU.FT.

 

60”

66”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

35 Degree Idlers

0-40

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

41-80

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

81-120

#/CU.FT.

 

60”

66”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

Over 120

#/CU.FT.

 

54”

60”

66”

 

72”

72”

 

 

 

 

 

 

45 Degree Idlers

0-40

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

41-80

#/CU.FT.

 

72”

72”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

81-120

#/CU.FT.

 

54”

60”

72”

 

72”

72”

 

 

 

 

 

 

 

 

 

Over 120

#/CU.FT.

 

48”

54”

60”

 

66”

72”

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ELEVATOR BELT CRITERIA

 

 

 

 

 

 

 

 

 

 

 

 

 

ELEVATOR TENSION RATINGS (PIW)

 

370

440

550

 

690

870

 

 

 

 

 

 

MINIMUM PULLEY DIAMETERS

 

 

 

 

 

 

 

 

 

 

 

 

 

81-100% Tension

 

30”

30”

30”

 

36”

42”

 

 

 

 

 

 

61-80%     Tension

 

24”

24”

24”

 

30”

36”

 

 

 

 

 

 

Up to 60% Tension

 

20”

20”

20”

 

24”

30”

 

 

 

 

 

 

MAXIMUM BUCKET PROJECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

100# 'CU.FT.l" OR LESS

 

 

 

 

 

 

 

 

 

 

 

 

 

Spaced Industrial

 

12”

12”

12”

 

12”

12”

 

 

 

 

 

 

Continuous Industrial

 

12”

12”

12”

 

12”

12”