Underground Mining Belts

Conveyor Belts – Lightweight

In the heavyweight underground mining industry, our many innovations like Steel Cord and Poly/Nylon belts and Triple-Warp™ weaving technology, have led the way in performance. These same powerhouse innovations and technology are used to develop our lightweight conveyor belt line. Available in 2 carcass constructions – Multi-Plied Spun Polyester and Single-Plied Interwoven with compounds that meet MSHA, CSA and ISO flame retardancy standards.

To view the technical specifications of our current belts used in underground mining, select a product from below. Many other combinations of covers, profiles, colors and fabric carcasses can be produced.

Below are some examples of Undeground Mining belts. Many other combinations of covers, profiles, colors and fabric carcasses can be produced. Please contact us for more information.


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Underground Mining Belts

Underground Mining Belts

Belts for Underground Mining Conveying

CSA 450S1 NNb | Canada Standard for Mining
This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines.

CSA 450S1 NNb

This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines. The all-polyester carcass provides good bolt holding, low stretch and excellent fastener retention. The belt construction meets and exceeds safety standards established by CSA for flame-retardant properties.

Technical Data:

Attributes Imperial Metric
Working Tension 450 piw 79 KN/M
Number Of Plies 1 1
Fabric Type Spun Poly Spun Poly
Top Surface Satin Satin
Bottom Surface Satin Satin
Overall Gauge (Approximate) 0.360 in. 9.1 mm
Weight (Approximate) 2.47 lbs/sq.ft. 11.9 kg/sq.m.
Bottom Coefficient Of Friction 0.50 (approx.) 0.50 (approx.)
Minimum Rec. Pulley Diameters 10.0 in. 254 mm
Elongation At Rated Tension < 2% < 2%
Working Temperature -20° to 180°F -29° to 82°C

Splicing Methods:

  • FOF: No
  • Finger: Yes
  • Bias Stepped: No
  • Skived Bias: Yes
  • Clipper*: N/A
  • Alligator*: N/A
  • Staple*: N/A

* Fastener manufacturer should be consulted to review belt and application information.


Compliance (Government Regulations):

  • FDA/USDA: No
  • OSHA (< 300 Megohms): No
  • MSHA (CFR 18.65): Yes
  • CSA (M422-87): Yes
  • FRAS (1334.12): No
  • NCB (158:1989): No

No warranty, including implied warranty of merchantability, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product. The information on this specification sheet supercedes all previously printed material.


MSHA 330S3 NNb | Underground Mining
This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines.

MSHA 330S3 NNb

This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines. The all-polyester carcass provides good bolt holding, low stretch and excellent fastener retention. Unique HPC™ technology delivers superior tracking performance and resistance to edge wear. The belt construction meets and exceeds safety standards established by MSHA for flame-retardant properties.

Technical Data:

Attributes Imperial Metric
Working Tension 330 piw 58 KN/M
Number Of Plies 3 3
Fabric Type Spun Poly Spun Poly
Top Surface Satin Satin
Bottom Surface Satin Satin
Overall Gauge (Approximate) 0.330 in. 8.4 mm
Weight (Approximate) 2.06 lbs/sq.ft. 10.0 kg/sq.m.
Bottom Coefficient Of Friction 0.50 (approx.) 0.50 (approx.)
Minimum Rec. Pulley Diameters 8.0 in. 203 mm
Elongation At Rated Tension < 2% < 2%
Working Temperature -20° to 180°F -29° to 82°C

Splicing Methods:

  • FOF: Yes
  • Finger: Yes
  • Bias Stepped: Yes
  • Skived Bias: Yes
  • Clipper*: N/A
  • Alligator*: N/A
  • Staple*: N/A

* Fastener manufacturer should be consulted to review belt and application information.


Compliance (Government Regulations):

  • FDA/USDA: No
  • OSHA (< 300 Megohms): No
  • MSHA (CFR 18.65): Yes
  • CSA (M422-87): No
  • FRAS (1334.12): No
  • NCB (158:1989): No

No warranty, including implied warranty of merchantability, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product. The information on this specification sheet supercedes all previously printed material.


MSHA 350S1 NNb | Underground Mining
This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines.

MSHA 350S1 NNb

This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines. The all-polyester carcass provides good bolt holding, low stretch and excellent fastener retention. The belt construction meets and exceeds safety standards established by MSHA for flame-retardant properties.

Technical Data:

Attributes Imperial Metric
Working Tension 350 piw 61 KN/M
Number Of Plies 1 1
Fabric Type Spun Poly Spun Poly
Top Surface Satin Satin
Bottom Surface Satin Satin
Overall Gauge (Approximate) 0.295 in. 7.5 mm
Weight (Approximate) 1.94 lbs/sq.ft. 9.4 kg/sq.m.
Bottom Coefficient Of Friction 0.50 (approx.) 0.50 (approx.)
Minimum Rec. Pulley Diameters 8.0 in. 203 mm
Elongation At Rated Tension < 2% < 2%
Working Temperature -20° to 180°F -29° to 82°C

Splicing Methods:

  • FOF: No
  • Finger: Yes
  • Bias Stepped: No
  • Skived Bias: Yes
  • Clipper*: N/A
  • Alligator*: N/A
  • Staple*: N/A

* Fastener manufacturer should be consulted to review belt and application information.


Compliance (Government Regulations):

  • FDA/USDA: No
  • OSHA (< 300 Megohms): No
  • MSHA (CFR 18.65): Yes
  • CSA (M422-87): No
  • FRAS (1334.12): No
  • NCB (158:1989): No

No warranty, including implied warranty of merchantability, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product. The information on this specification sheet supercedes all previously printed material.


MSHA 450S1 NNb | Underground Mining
This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines.

MSHA 450S1 NNb

This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines. The all-polyester carcass provides good abuse resistance, low stretch and excellent fastener retention. The belt construction meets and exceeds safety standards established by MSHA for flame-retardant properties.

Technical Data:

Attributes Imperial Metric
Working Tension 450 piw 79 KN/M
Number Of Plies 1 1
Fabric Type Spun Poly Spun Poly
Top Surface Satin Satin
Bottom Surface Satin Satin
Overall Gauge (Approximate) 0.350 in. 8.9 mm
Weight (Approximate) 2.20 lbs/sq.ft. 10.6 kg/sq.m.
Bottom Coefficient Of Friction 0.50 (approx.) 0.50 (approx.)
Minimum Rec. Pulley Diameters 10.0 in. 254 mm
Elongation At Rated Tension < 2% < 2%
Working Temperature -20° to 180°F -29° to 82°C

Splicing Methods:

  • FOF: No
  • Finger: Yes
  • Bias Stepped: No
  • Skived Bias: Yes
  • Clipper*: N/A
  • Alligator*: N/A
  • Staple*: N/A

* Fastener manufacturer should be consulted to review belt and application information.


Compliance (Government Regulations):

  • FDA/USDA: No
  • OSHA (< 300 Megohms): No
  • MSHA (CFR 18.65): Yes
  • CSA (M422-87): No
  • FRAS (1334.12): No
  • NCB (158:1989): No

No warranty, including implied warranty of merchantability, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product. The information on this specification sheet supercedes all previously printed material.


PVIM 450S1 NNb | Mining Belt with ISO
This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines.

PVIM 450S1 NNb

This versatile, heavy-duty interwoven-constructed belt offers excellent service in underground coal mines. The all-polyester carcass provides good bolt holding, low stretch and excellent fastener retention. The belt construction meets and exceeds safety standards established by ISO 340 for flame-retardant properties.

Technical Data:

Attributes Imperial Metric
Working Tension 450 piw 79 KN/M
Number Of Plies 1 1
Fabric Type Spun Poly Spun Poly
Top Surface Satin Satin
Bottom Surface Satin Satin
Overall Gauge (Approximate) 0.360 in. 9.1 mm
Weight (Approximate) 2.47 lbs/sq.ft. 11.9 kg/sq.m.
Bottom Coefficient Of Friction 0.50 (approx.) 0.50 (approx.)
Minimum Rec. Pulley Diameters 10.0 in. 254 mm
Elongation At Rated Tension < 2% < 2%
Working Temperature -20° to 180°F -29° to 82°C

Splicing Methods:

  • FOF: No
  • Finger: Yes
  • Bias Stepped: No
  • Skived Bias: Yes
  • Clipper*: N/A
  • Alligator*: N/A
  • Staple*: N/A

* Fastener manufacturer should be consulted to review belt and application information.


Compliance (Government Regulations):

  • FDA/USDA: No
  • OSHA (< 300 Megohms): No
  • MSHA (CFR 18.65): Yes
  • CSA (M422-87): Yes
  • FRAS (1334.12): Yes
  • NCB (158:1989): No

No warranty, including implied warranty of merchantability, fitness for a particular purpose, or other warranty of quality is either expressed or implied of this product. The information on this specification sheet supercedes all previously printed material.