Sleeve expansion anchor bolts with nut and washers for concrete mounting
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Expansion Anchor Bolt for Power Hardware & Concrete Mounting | YiHaoPower

The Expansion Anchor Bolt (Sleeve Type Concrete Anchor) is a heavy-duty mechanical fastener engineered for anchoring cable tray brackets, electrical enclosures, conduit supports, and grounding equipment into solid concrete and masonry.

  • High Pull-Out Load Capacity: Precision expansion sleeve expands uniformly against borehole walls to deliver maximum tensile shear strength and pull-out resistance.
  • Premium Stainless & Galvanized Options: Manufactured from high-purity austenitic stainless steel (A2-70 / A4-70) and heavy zinc-plated carbon steel for all-weather corrosion protection.
  • Pre-Assembled Fastener Kit: Supplied as a complete unit including threaded stud, slotted expansion sleeve, flat washer, spring lock washer, and heavy hex nut.
  • Fast Through-Fixing Installation: Allows direct through-mounting into drilled concrete holes without removing the fixture during installation.

Need Custom Anchor Lengths or Thread Diameters? Contact the YiHaoPower engineering team today for technical data sheets, dimensional drawings, and direct factory wholesale quotes.

SKU: YHP-EP-EABSERIES Categories: , Tags: , , , , ,

Product Overview: Expansion Anchor Bolt

The Expansion Anchor Bolt (EAB Series Heavy-Duty Sleeve Anchors) is a critical masonry anchoring fitting widely deployed across power substations, industrial plant construction, cable management installations, and equipment base mounting. Manufactured by YiHao Power, our expansion anchors are produced from high-tensile carbon steel and premium A2-70 / A4-70 stainless steel alloys. Engineered to comply with international manufacturing and safety specifications for heavy construction fasteners, each Expansion Anchor Bolt provides dependable mechanical gripping force, high shear resistance, and long-term joint stability under heavy static and vibrational loads.

Technical Specifications

Parameter Specification
Product Series EAB Series Sleeve Expansion Anchor Bolts
Base Material High-Tensile Carbon Steel / Stainless Steel (A2-70, A4-70)
Surface Protection Yellow/White Zinc Plated / Hot-Dip Galvanized / Bright Passivated
Thread Diameter Range M6, M8, M10, M12, M16, M20 (Metric Standard Sizes)
Standard Compliance UL / BS / IEC / ISO International Standards Compliant
Application Scope Cable Tray Wall Brackets, Switchgear Base Mounting, Transformer Anchoring

Key Performance Features of Our Expansion Anchor Bolt

  • 360-Degree Uniform Expansion: As the conical bolt end is drawn into the expansion sleeve during tightening, the sleeve outwards expands tightly against the concrete hole wall, creating a permanent high-friction mechanical anchor.
  • Vibration Resistance & Lock Washer Assembly: Equipped with heavy-duty spring lock washers to prevent nut loosening caused by machinery vibration or thermal contraction cycles.
  • Superior Outdoor Anti-Corrosion Options: Stainless steel variants offer complete immunity to groundwater moisture, marine salt spray, and chemical exposure in harsh industrial environments.
  • High Shear & Tensile Ratings: Cold-formed steel body and heavy sleeve walls ensure structural rigidity under overhead hanger loads and side-shear stresses.

Installation Guidelines for Concrete Mounting

Proper installation of an Expansion Anchor Bolt ensures maximum holding capacity in concrete and masonry structures. Follow these standard field practices:

  1. Drilling the Hole: Use a hammer drill with a masonry bit matching the anchor sleeve outer diameter. Drill to the specified depth.
  2. Hole Cleaning: Thoroughly blow out concrete dust and debris from the drilled hole using a wire brush and air pump to maximize friction grip.
  3. Anchor Insertion & Torquing: Insert the assembled anchor through the fixture mounting hole into the concrete. Tap lightly with a hammer until flush, then tighten the hex nut to the required torque setting using a manual wrench.

Primary Application Scenarios Across Industrial Facilities

Our premium expansion anchor fasteners are widely deployed across global power and infrastructure projects, including:

  • Cable tray cantilever brackets, ladder rack supports, and wall-mounted raceways.
  • Electrical distribution cabinets, control panels, and transformer base plate floor anchoring.
  • Equipotential grounding busbars, earth lead brackets, and lightning down-conductor clamps.
  • Structural steel posts, pipe hangars, and conduit support brackets on concrete ceilings and walls.

Frequently Asked Questions (FAQ)

Q1: How do I select the correct drill bit size for an Expansion Anchor Bolt?

A1: Always match the drill bit diameter to the outer sleeve diameter of the anchor bolt rather than the inner thread diameter to ensure proper friction expansion.

Q2: Can sleeve expansion anchors be used in hollow brick or drywall?

A2: Mechanical sleeve anchors require solid concrete, stone, or solid brick for maximum expansion force and should not be used in lightweight hollow drywall.

Quality Assurance & Factory Testing

Every batch of Expansion Anchor Bolt products manufactured by YiHao Power undergoes rigorous quality control inspection before dispatch. Our testing protocols include dimensional tolerance checks, concrete pull-out force testing, tensile load testing, and plating/corrosion thickness verification.

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