Technical Foundation
What Is a Lifting And Spreader Beam?
A lifting beam and a spreader beam solve the same underlying problem — controlling how a crane hook's single point load is distributed to multiple sling attachment points — but through opposite geometries. A lifting beam sits above the load with slings running from the beam down to the load in an inverted-V, putting the beam in bending; a spreader beam sits between the slings and the load with slings running vertically, putting the beam mainly in compression and eliminating the inward sling angle that would otherwise squeeze a wide or fragile load.
Every beam is certified to a Working Load Limit (WLL) at a specific configuration — span, number of pick points, and sling angle — stamped on a data plate per ASME B30.20 (US) or equivalent. That rating is not a general-purpose number: changing the span on an adjustable beam, adding pick points, or using it outside its rated configuration invalidates the certified WLL and requires re-engineering or a load test before reuse.
Prefer a quick quote?
Get Lifting And Spreader Beams Pricing in Your Inbox
Skip the search — tell us the working load limit, span and number of pick points and we will come back with pricing.
| Spec | What It Means | Why It Matters |
|---|---|---|
| Working Load Limit (WLL) | Maximum rated capacity at the beam's certified configuration | Exceeding it, or using the beam outside its rated span/point config, voids the certification |
| Beam Type | Lifting beam (bending) vs. spreader beam (compression) | Spreader beams eliminate inward sling squeeze on wide loads; lifting beams suit narrower, taller loads |
| Span/Adjustability | Fixed length vs. telescoping/adjustable pick points | Adjustable beams must be re-verified at each new setting against the load chart, not just the max span |
| Number of Pick Points | 2, 3, 4-point or multi-point frame | More pick points require engineered load-sharing to avoid overloading one leg |
| Design Standard | ASME B30.20, ASME BTH-1 (below-the-hook lifting devices) | Governs required design factor, proof-load testing and data plate marking |
Shop Lifting And Spreader Beams
Browse Lifting And Spreader Beams Sub-Categories
Organised by beam configuration. Pick a sub-category, or describe the load weight, dimensions and pick points and let ChatMRO match the beam.
How it works
From Half-Remembered Part Number to PO, in Three Steps.
Ask
Type an MPN, paste a spec sheet, or describe the part in plain English. ChatMRO understands engineer-speak.
Compare
Side-by-side specs, cross-references, and equivalents from multiple sources — without the clutter of endless browser tabs.
Quote & Buy
Request a quote or add to cart. Volume discounts, VAT-aware pricing, and consolidated procurement — all in one place.
Applications
Where Lifting And Spreader Beams Get Used
Lifting and spreader beams are specified wherever a single crane hook must lift a load too wide, long or fragile for a simple multi-leg sling alone.
Wind Energy & Turbine Assembly
Long-span modular beams engineered for blade and nacelle component lifts with specific pick-point geometry.
Precast Concrete & Structural Steel
Multi-point lifting frames distributing load evenly across wide panels and beams during erection.
Shipbuilding & Heavy Fabrication
Adjustable spreader beams controlling sling angle on wide hull sections and fabricated assemblies.
Power Plant & Industrial Maintenance
Rated lifting beams for transformer, generator and heat exchanger removal and installation.
Aerospace Manufacturing
Custom below-the-hook lifting devices engineered to fuselage and component pick points.
General Rigging & Crane Services
Rental-grade fixed and adjustable spreader beams sized to common load and span combinations.
FAQ
Lifting And Spreader Beams Questions, Answered
What's the actual difference between a lifting beam and a spreader beam?
A lifting beam is rigged above the load with slings angling down from the beam to the load, putting the beam primarily in bending — it suits narrower or taller loads. A spreader beam sits between the slings and the load with the lower slings running vertically to the load, putting the beam mainly in compression; this eliminates the inward squeezing force that angled slings would otherwise put on a wide or fragile load.
Can I use an adjustable spreader beam at any span within its range?
Only if the load chart or data plate explicitly rates that span — many adjustable beams have a stepped or non-linear WLL curve across their adjustment range, meaning capacity drops at longer spans. Always check the rated WLL for the specific span setting you're using, not just confirm the setting is within the beam's mechanical adjustment range.
What standard governs lifting beam design and certification?
In the US, below-the-hook lifting devices including lifting and spreader beams are designed to ASME BTH-1 and used per ASME B30.20, which specify required design factors, proof-load testing (typically 125% of rated capacity) and data plate marking requirements. Always confirm the beam carries current certification documentation, not just a stamped WLL.
How many pick points can a spreader beam have?
Standard spreader beams are 2-point; multi-point lifting frames (3, 4 or more points) are engineered assemblies that must actively manage load-sharing between legs, since an uneven load distribution can overload one point even when the total load is within the frame's rated capacity. Multi-point frames typically require an engineered rigging plan specific to the load's actual center of gravity.
Do lifting beams need periodic inspection or re-certification?
Yes — below-the-hook lifting devices require periodic inspection per ASME B30.20 (frequency depends on usage severity), checking for deformation, weld cracking, and data plate legibility. Any modification, overload event, or damage requires re-inspection and, in many cases, re-proof-testing before the beam returns to service.
Keep browsing
Related Categories
Explore More
Find Your Next Part Now.
Describe a part number, spec or what it does.