Grid Spring Type Couplings
Reliable power transmission for demanding industrial environments. Danum Couplings supplies high-performance grid spring coupling solutions from industry leaders including Rexnord Falk, Altra Bibby transmission, and CMD Winflex. These torsionally flexible components are engineered to dampen heavy shock loads and protect mission-critical machinery through precise angular and offset misalignment compensation.
Grid spring couplings are mechanical shaft couplings designed to transmit torque while providing high torsional flexibility and shock absorption. They use a flexible, serpentine-shaped metallic grid that interlocks with the teeth of two shaft hubs, allowing the system to cushion sudden loads and reduce vibrations by up to 30%.
Key Components
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Hubs: Two radially slotted hubs, typically made of high-strength alloy steel, that attach to the driving and driven shafts.
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Grid Element: A serpentine-shaped spring made of high-tensile, tempered steel that transmits torque between the hubs.
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Cover: A split shell (horizontal or vertical) that contains the grid and retains lubrication.
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Lubrication: Essential grease that reduces friction and wear between the metal grid and hub teeth.
Performance Benefits
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Shock Absorption: The grid flexes under load, spreading impact energy over time to protect connected equipment like motors and gearboxes.
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High Power Density: They can transmit significant torque relative to their compact size, similar to gear couplings but with better dampening.
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Interchangeability: Many designs are interchangeable with industry standards, allowing for easy maintenance without moving the connected machinery.
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Misalignment Tolerance: They can accommodate slight angular and axial misalignments, though they are less forgiving of parallel misalignment than elastomeric types.
Common Applications
Grid couplings are primarily used in medium to heavy-duty industrial applications that experience frequent shock loads and vibrations:
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Pumps and Fans: Ideal for systems requiring torsional resilience.
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Mining and Construction: Used in ball mills, crushers, and conveyors where high impact loads are common.
Grid Spring Coupling Specifications
Rexnord Falk Steelflex
The Falk Steelflex grid coupling offers a unique taper-grid design that absorbs impact loads and compensates for misalignment, effectively protecting connected equipment through torsional flexibility.
Falk Steelflex grid spring couplings
are backed by a 5-year heavy-duty warranty, provided they are lubricated with Falk Long Term Grease (LTG) at the time of installation. This specific lubrication requirement is critical because it eliminates the need for periodic maintenance or re-lubrication for the entire five-year
Torque: Up to 932,000 Nm
Bore: Up to 508mm
Material: Tapered Alloy Grid
Coupling models included in the range are type T10, T20, T31, T35, T44 and many more.
Bibby Turboflex 2000 Series
The Bibby Turboflex 2000 Series refers to a line of Taper Grid Resilient Couplings designed by Bibby Turboflex, a brand under Regal Rexnord. This series is an all-metal coupling used primarily to protect machinery from shock loads, vibration, and shaft misalignment.
Typical Applications
These couplings are widely used in heavy industrial sectors, including:
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Pumps, fans, and blowers.
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Conveyors and gearboxes.
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Steel mill equipment and ball mill drives.
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Compressors and mixers.
Fatigue: Shot-peened elements
Service: In-situ replacement
Design: Dual engagement
CMD Winflex Couplings
CMD Winflex couplings are engineered for extreme conditions, providing a robust and cost-effective solution with easy maintenance and superior damping capabilities for critical power transmission.
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Progressive Torsional Stiffness: Its unique tooth profile allows the contact area between the grid spring and hub to increase proportionally with the load. This ensures constant pressure and efficient shock absorption.
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Torque Capacity: The standard Winflex T series handles torques from 90 Nm up to 800 kNm for shaft diameters up to 550 mm.
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Durability: Suitable for severe environments ranging from -20°C to +110°C. Surface treatments are applied to prevent oxidation and reduce wear.
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Maintenance: Designed for a long life cycle, with maintenance intervals (lubrication) recommended every 40,000 hours or 5 years under standard conditions.
Speed: Up to 12,000 RPM
Lubrication: Long-life grease
Mounting: Horizontal/Vertical
Engineered for Performance: Grid Spring Couplings
Danum Couplings Ltd provides robust solutions for complex industrial distribution. Our grid spring couplings are engineered to protect your machinery from torque fluctuations and vibration, ensuring operational longevity through precision hardware sourcing from world-class manufacturers.