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Hinged Bolt Type Fasteners
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HINGED BOLT TYPE FASTENERS
Hinged Bolt Fastener System
Hinged bolt fasteners provide a flexible joint for belts operating over small pulleys. Because the joint is easily separated by simply removing the hinge pin, entire belt sections may be added or eliminated.
Designed as a compression fastener,the bolt hinged model is fastened to the belt ends with high strength bolts. These compress the plates into the belt cover. Additional holding capabilities is provided by the fastener teeth that imbed in the belt without damage to the belt carcass.
This combination distributes the splice tension across the entire plate width, while the teeth secure the fastener into the belt carcass to resist pull-out. |
Hinged Bolt Fastener Sizes
375X
- Designed for belt conveyors with center distances less than 1000 feet.
- For belts 1/4" to 13/32" thick.
- Use on belts with mechanical fastener ratings up to 190 PIW.
- Operates over 6" minimum pulley diameter.
- Fastener strips ensure a straight splice and faster installation.
- Available in complete joints for various belt widths or in bulk fasteners without hinge pins.
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550
- For belts 1/4" to 5/8" thick.
- Use on belts with mechanical fastener ratings up to 300 PIW.
- Operates over 9" minimum pulley diameters.
- Available in complete joints for various belt widths or in bulk fasteners without hinge pins.
Most 550 steel joints are furnished with continuous, single-piece fastener strips (belt widths 24", 30", 36", 42" and 48"). These strips reduce installation time and insure a straight splice. These and other width joints are available, made up with individual fastener plates, for increased joint flexibility on deep-troughing idlers or where poor belt alignment is a problem.
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750
- For belts 9/16" to 7/8" thick.
- Use on belts with mechanical ratings up to 400 PIW.
- Operates over 20" minimum pulley diameters.
- Available in complete joints for various belt widths or in bulk fasteners without hinge pins. Individual steel plates are standard.
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Fastener Selection Chart
| Fastener Size | For Belts with PIW Mechanical Fastener Ratings to: | Belt Thickness Range | Recommended Minimum Pulley Diameter |
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| Operating Tension 100% of Belt Rating | Operating Tension Under 75% of Belt Rating |
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| 375X | 190 | 1/4" - 13/32" | 6" | 4" |
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| 550 | 300 | 1/4" - 5/8" | 9" | 7" |
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| 750 | 400 | 9/16" - 7/8" | 20" | 18" |
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Ordering Numbers
| Each "J" carton contains one complete belt joint. This includes: fasteners, hinge pin, filler tubing, bolts and nuts; assembly clips and a gauge rod for easy installation. (The connected fastener strips, 375X and certain widths of 550 strip, do not require clips, so none are included.) |
| Ordering Numbers for Steel Fasteners |
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| Belt Width | 375X with Nylon Covered Steel Cable | 550 with Nylon Covered Steel Cable | 750 with Nylon Covered Steel Cable |
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| Part # | Part # | Part # |
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| 12" | 375XJ12NC | - | - |
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| 14" | 375XJ14NC | - | - |
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| 16" | 375XJ16NC | - | - |
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| 18" | 375XJ18NC | 550J18NC | - |
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| 20" | 375XJ20NC | 550J20NC | - |
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| 24" | 375XJ24NC | 550J24NC | - |
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| 30" | 375XJ30NC | 550J30NC | - |
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| 36" | 375XJ36NC | 550J36NC | 750J36NC |
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| 42" | 375XJ42NC | 550J42NC | 750J42NC |
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| 48" | 375XJ48NC | 550J48NC | 750J48NC |
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| 60" | - | 550J60NC | - |
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| Ordering Numbers for Stainless Steel Fasteners with Nylon Covered Stainless Cable |
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| 18" | 375XSJ18NCS | 550SJ18NCS | - |
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| 24" | 375XSJ24NCS | 550SJ24NCS | - |
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| 30" | 375XSJ30NCS | 550SJ30NCS | - |
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| 36" | 375XSJ36NCS | 550SJ36NCS | - |
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| 42" | - | 550SJ42NCS | - |
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| 48" | - | 550SJ48NCS | - |
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Note: Part numbers above include a Nylon Covered Steel Cable for steel fasteners and a Nylon Covered Stainless Steel Cable for stainless steel fasteners. For other cables, replace the "NC" or "NCS" in the above part numbers with the Hinge Pin suffix letters given below.
Hinge Pins for Bolt Hinged Lacing
SC - Bare Steel Cable
For conveying gritty or highly abrasive material, Bare Steel Cable (SC) is recommended. Offered for numbers 375X and 550 fasteners only. |
NC - Nylon Covered Steel Cable
The nylon coating reduces corrosion and makes pin insertion easier. |
SSC - Bare Stainless Steel Cable
Where corrosion attacks steel cable hinge pins, Bare Stainless Steel Cable (SSC) does the job. Not recommended for use with deep troughing idlers over 35º. |
NCS - Nylon Covered Stainless Steel Cable
For greater corrosion resistance, the Nylon Covered Stainless Steel Cable (NCS) is furnished standard with Stainless joints. In is not recommended for use with deep troughing idlers over 35º.
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NB - Nylon Covered Bronze Cable
For a non-magnetic joint, use fully non-magnetic Nylon Covered Bronze Cable (NB) with Everdur fasteners. |
NAC - Nylon Covered Armored Cable
The right hinge pin for many mining conditions is the Nylon Covereed Armored Cable (NAC). Long service life is due to the patented hinge pin design. It combines a durable, flat wire wrap around the cable which is covered by nylon for smooth operation. |
Note: Bulk fastener sets, replacement bolts and nuts and extra hinge pins are available. Please call our TFE Customer Service Department for availibility. |
Bolt Hinged Installation Tools and Supplies
Curved Templates
Used in conjunction with the "clip and gauge rod" method to install complete joints, the templet acts as a guide to accurately punch or drill holes into the belt ends. This insures proper fastener alignment.
Templets are available for all sizes of Bolt Hinged fasteners. They come in lengths for standard belt widths. See table below for ordering information. |
Curved Templets for Bolt Hinged Fasteners
| Belt Width | 375X | 550 | 750 |
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| Part # | Part # | Part # |
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| 18" | 375X-18 | 518 | - |
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| 20" | 375X-20 | 500 | - |
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| 24" | 375X-24 | 524 | - |
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| 30" | 375X-30 | 530 | - |
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| 36" | 375X-36 | 536 | - |
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| 42" | 375X-42 | 542 | - |
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| 48" | 375X-48 | 548 | 748 |
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| 60" | 375X-60 | 560 | - |
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Hand or Power Tools for Bolt Hinged Fasteners
In addition to a templet or aligning holder, the following hand or power tools are required for installation: a punch or a boring bit (the punch is preferred for general use and where the belt cover is over 3/16" thick); a wrench (a different wrench is required for stainless fasteners, which are furnished with slotted nuts); and a bolt breaker.
A power impact wrench cuts application time to approximately 50%. It should be used with a "quick change chuck" which adapts the tools to the square drive stud on an air or electric impact wrench. |
Hand and Power Tools for Bolt Hinged Fasteners
| Fastener Number | Bolt Hole Diameter | Punch | Boring Bit | Wrench | Bolt Breaker |
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| Part # | Part # | Part # | Part # |
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| Hand Tool Ordering Numbers |
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| 375X & 550 | 1/4" | P1P | B1B | 100 (S1S*) | 110 |
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| 750 | 3/8" | P3P | B3B | S3S | 113 |
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| Power Tool Ordering Numbers |
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| 375X & 550 | 1/4" | HP1 | HB1 | H100 (HW1*) | 110 |
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| 750 | 3/8" | HP3 | HB3 | HW3 | 113 |
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*Note: S1S and HW1 are for use with Stainless Steel Nuts
Quick Change Chuck
To use power tools, a Quick Change Chuck is required. This adapts tools to the square drive stud on air or electric impact wrenches. |
Quick Change Chuck for Bolt Hinged Fasteners
| Fastener Size | Drive Size | Part # |
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| 375X & 550 | 1/2" | 5552 |
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