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HHIperLift Spectra Slings

One of the most successful and popular offerings by Holloway Houston, HHIPerLift Spectra Slings are lightweight synthetic slings made to withstand large loads. Designed to offer exceptional performance under grueling conditions, they are capable of lifting loads anywhere from 8 tons to 600 tons at 5:1 ratio.

From hard items to fragile ones, you can use HHIPerLift Spectra Slings to lift any load. Resistant to physical and chemical abrasions, and exhaustion, these slings have become an industry standard. However, keeping with its tradition to provide the users with products made using the latest technology and performance specifications, Holloway Houston has relaunched HHIPerLift Spectra Slings as Silverback Slings.

Silverback Slings

Made with Honeywell Spectra® fibers, Silverback Slings are better and enhanced series of new-generation lifting slings made from space-age materials and high-tech design processes.

  • High Specific Modulus – Excellent for lifting and mooring in ultra-deep water, highly cut-resistant
  • Saltwater Resistance – 100% proof-tested for resistance to prolonged saltwater immersion at ultra-deep levels

Get a Quote

    For any inquiries NOT related to RFQs, please call 713-674-5631

    General and Technical Data

    High-Contact Rigging Efficiency (HCRE)

    Most conventional roundslings, wire ropes, and braided ropes generally require reasonably large and fixed diameters in relation to the lifting potential. However, Silverback Slings offer superior rigging efficiency compared to their traditional counterparts.

    Unlike braided ropes or helically-laid stranded yarns, Silverback Slings use a unique oversized triple cover with a parallel laid yarn inside. It allows you to reshape the slings, making them fit perfectly on the load-bearing surfaces.

    Silverback Slings have a design factor of 5:1 (ultimate = 5 times rated load). These slings are rated in tons. Users are advised to not exceed the rated capacity to avoid potential accidents.

    D/d Ratios

    To achieve the loads it was designed for, the Silverback Sling System needs to have a minimum of a 3:1 D/d ratio. In other words, the size of the pin around which the slings goes must have at least three times the diameter of the sling at the bearing point.

    Ratings & Design Factors

    Sling ratings are based on a standard wide-body shackle (or equivalent bearing surface) of equal or greater capacity.

    Ratings & Design Factors

    • Stronger: Silverback Slings have up to 40% higher specific strength compared to aramid fibers (Technora, Kevlar), along with excellent toughness and durability.
    • Lightweight: Silverback Slings are remarkably light; a vertical 15′ 75-ton sling weighs less than 75 pounds. As a result, you can manipulate them without the use of special equipment or work-rated ROVs.
    • Reduced Elongation: They have a maximum of 3.8% at breaking load.
    • Floatation Properties: They are lightweight with 0.97-g/cc density. So, they tend to remain relatively stable in the deep water.
    • Prolonged Saltwater Immersion Tolerance: The Honeywell Spectra® testing showed no reduction in lifting capacity after six months of saltwater immersion. It showed only 1% to 2% loss after 12 months of immersion.
    • They have excellent fatigue resistance.
    • Superior damping characteristics (vibration, shock, and impact): Silverback Slings can withstand high-load strain rate velocities.
    • High Specific Modulus: Excellent for lifting and mooring in ultra-deep water.
    • Exceptional high-pressure resistance.
    • High chemical resistance.
    • Good UV resistance.
    • Highly cut-resistant.
    • Made in America: All Honeywell Spectra® fibers and cover materials are manufactured in the U.S. Sling fabrication and load testing are performed at HHI’s Houston facility.
    • API-Q1 standards of design, calculation, and large sample testing, as well as other proven methods are used in the development of Silverback Roundslings.

    HHIperlift High Performance Roundslings (HH-SP & HH-SPE)

    HHI Part Number
    Endless Roundslings
    HHI Part Number
    Eye and Eye Roundslings
    Vertical WLL
    in M Ton
    Choker Hitch
    WLL in M Ton
    Vertical Basket
    WLL in M Ton
    Approx.
    Wgt/Ft
    Length
    (lbs.)
    Recomm.
    Wide Body
    Shackles
    Body
    Dia
    HH-18T-SP
    HH-18T-SPE
    18t
    14.4t
    36t
    .81
    18t
    1.43
    HH-25T-SP
    HH-25T-SPE
    25t
    20t
    50t
    1.13
    30t
    1.75
    HH-50T-SP
    HH-50T-SPE
    50t
    40t
    100t
    2.26
    55t
    2.38
    HH-75T-SP
    HH-75T-SPE
    75t
    60t
    150t
    3.39
    75t
    2.86
    HH-100T-SP
    HH-100T-SPE
    100t
    80t
    200t
    4.52
    125t
    3.5
    HH-125T-SP
    HH-125T-SPE
    125t
    100t
    250t
    5.65
    125t
    3.89
    HH-150T-SP
    HH-150T-SPE
    150t
    120t
    300t
    6.78
    150t
    4.29
    HH-175T-SP
    HH-175T-SPE
    175t
    140t
    350t
    7.91
    200t
    4.77
    HH-200T-SP
    HH-200T-SPE
    200t
    160t
    400t
    9.04
    200t
    4.93
    HH-225T-SP
    HH-225T-SPE
    225t
    180t
    450t
    10.17
    250t
    5.57
    HH-250T-SP
    HH-250T-SPE
    250t
    200t
    500t
    11.30
    250t
    5.89
    HH-275T-SP
    HH-275T-SPE
    275t
    220t
    550t
    12.43
    300t
    6.21
    HH-300T-SP
    HH-300T-SPE
    300t
    240t
    600t
    13.56
    300t
    6.52
    HH-350T-SP
    HH-350T-SPE
    350t
    280t
    700t
    15.83
    400t
    7.16
    HH-400T-SP
    HH-400T-SPE
    400t
    320t
    800t
    18.09
    400t
    7.48
    HH-450T-SP
    HH-450T-SPE
    450t
    360t
    900t
    20.35
    500t
    8.43
    HH-500T-SP
    HH-500T-SPE
    500t
    400t
    1,000t
    22.61
    500t
    8.91

    *Larger Capacities Available upon Request.