Spreader Bar vs Lifting Beam: When to Use Each One

Spreader bars and lifting beams are both classified as industrial lifting devices under ASME B30.20, but they work in fundamentally different ways. One carries load through compression, the other through bending, and that structural distinction drives everything from headroom requirements to rigging configuration to the types of lifts each device handles best. Choosing the wrong one for a given application does not just create inefficiency; it can introduce rigging geometry problems that affect the entire lift.

This article breaks down how each device works, where each one fits, and the practical factors that determine which is the better choice for a given lift. It is a selection-awareness resource for riggers, lift planners, and procurement teams, not a lift planning guide.

Safety & Use: Ratings and examples here are for safety awareness. Final lift plans and gear selection should follow applicable standards, manufacturer data, and engineered lift planning where required.

What Is a Spreader Bar?

A spreader bar is a industrial lifting device designed to spread the top rigging and keep sling legs apart during a lift. It is rigged between the crane hook and the load, with Lifting Slings running from the crane hook down to each end of the bar, and separate rigging running from the bar ends down to the load.

Holloway Houston stocks Spreader Bars in fixed, adjustable, and custom configurations for applications ranging from construction steel erection to offshore heavy lifts.

How Spreader Bars Work (Compression)

The defining structural characteristic of a spreader bar is that it carries load in axial compression. The top slings run from the crane hook to the ends of the bar at an angle; the horizontal component of that sling tension pushes the bar ends inward. The bar resists this inward force through compression along its length. Because a spreader bar is a compression member, its capacity is governed primarily by its resistance to buckling, not bending.

What Is a Lifting Beam?

A lifting beam is a industrial lifting device that is supported from a single point (or a pair of points) at or near its center and carries the load from multiple points along its length. Unlike a spreader bar, a lifting beam does not use angled top slings, it attaches directly to the crane hook or hoist via Shackles or a direct hook-to-eye connection.

How Lifting Beams Work (Bending)

The defining structural characteristic of a lifting beam is that it carries load in bending. The beam is supported at its center and the load pulls downward from points along its underside. This creates a bending moment through the beam's cross-section. Because a lifting beam is a flexural member, its capacity is governed by its bending strength and stiffness, specifically its section modulus and resistance to lateral-torsional buckling.

Head-to-Head Comparison

Decision Guide: Which One Do You Need?

Choose a Spreader Bar When:

• Headroom is not a constraint : Outdoor lifts and yard operations typically provide enough vertical clearance for angled top slings.
• Weight efficiency matters : Spreader bars tend to be lighter and more material-efficient than lifting beams of comparable capacity.
• The load is long and uniform : Ideal for pipe sections, trusses, and long beams.
• Technical Reference : Browse Spreader Beams for ASME B30.20 compliant fixed and modular options.

Choose a Lifting Beam When:

• Headroom is limited : Indoor cranes in fabrication shops or under-bridge work where clearance is tight.
• The load needs more than two pick points : Lifting beams with adjustable points benefit asymmetric loads or machinery with multiple lugs.
• Rigging flexibility is important : If you need to serve a wide range of load sizes with a single device.
• Technical Reference: Browse Rigging Hardware for compatible adjustable pick-point accessories.

Technical Standards & Compliance

All Holloway Houston industrial devices are designed to meet ASME BTH-1 and ASME B30.20 standards.

• ASME B30.20-2025 : Covers marking, installation, and inspection.
• OSHA 1926.251 : Requires custom accessories to be proof-tested to 125% of rated load.
• Marking : Every device must be marked with the manufacturer's name, rated load, serial number, and weight.

Shop Industrial Hardware at Holloway Houston

Holloway Houston stocks a comprehensive inventory of Spreader beams and Rigging hardware. Available for purchase online with fast shipping or custom-fabricated to your specific project needs.

Need a custom solution or a rental quote? Request a Quote or call our rigging experts at (713) 675-3900.