Semi Gantry Crane for Sale: BMG & BMH Configurations, Specs, and Factory-Direct Pricing

A semi gantry crane is a hybrid structure where one end carriage travels on an elevated runway attached to your building wall, and the other runs on a ground-level rail. Voitto Crane supplies two factory-direct configurations: the BMH single-girder (2–16 t, from ~$12,000) for light-to-medium workshop use, and the BMG double-girder (5–320 t, from ~$42,000) for heavy industrial applications — both with custom span, lifting height, and voltage options.

If you manage a manufacturing facility, warehouse, or steel processing yard where floor space is limited and you already have overhead infrastructure on one side of the building, a semi gantry crane for sale is almost certainly the most cost-efficient lifting upgrade available. You avoid the civil cost of adding a full second column row while still covering the full width of your workspace.

This page covers both BMH and BMG specs side by side, helps you choose the right type for your load cycle, breaks down what drives price, and explains how to verify certifications before you commit to a supplier.

Quick Reference — Voitto Crane Semi Gantry Crane for Sale

Prices are market reference ranges for Chinese factory supply. Final cost depends on capacity, span, voltage, and finish specification. Confirm with Voitto Crane for a project-specific quote.

Why a Semi Gantry Crane Outperforms the Alternatives in Most Factory Scenarios

It Costs Less Than a Full Gantry Crane Without Sacrificing Coverage

A semi gantry crane for sale eliminates one full leg and its ground rail, which typically reduces the steel structure cost by 25–40% compared with an equivalent-span double-leg gantry crane. The reason is structural: one side leverages the existing runway beam embedded in your building wall, so you are only engineering and paying for half the ground-support infrastructure. For a 10 t / 18 m span installation, that saving alone often exceeds the cost of the hoist trolley.

The trade-off is a site prerequisite: the building wall or column on the elevated side must be structurally rated to carry the imposed rail load. A competent structural engineer must verify this before procurement. If your building cannot support the load, a full gantry crane is the safer route.

It Adds a Second Hook Underneath an Existing Overhead Crane

The most underused application of a semi gantry crane is installation beneath an already-operating overhead crane. Because the semi gantry’s runway height is below the existing crane girder, both units can operate in the same bay simultaneously — effectively doubling your lifting hooks without any building modification. This is standard practice in steel fabrication plants and precast concrete yards where production bottlenecks appear at the hook, not at the bridge.

It Keeps the Floor Clear Where an Overhead Crane Cannot

Full overhead cranes require a column row on each side of the bay. If one side of your facility has an open aisle, dock door, or production line that cannot accept a column, a semi gantry crane solves the problem by leaving that side column-free. The single ground rail runs parallel to the wall on the leg side and can be integrated into the floor slab during construction or added as a surface-mounted rail post-build.

Three-Way Structural Comparison

BMH vs BMG: Choosing the Right Semi Gantry Crane Type

BMH Single Girder — The Right Choice for Light-to-Medium Workshop Use

The BMH is the correct semi gantry crane for sale when your peak load stays at or below 16 tonnes and your span is under 20 metres. Its single I-beam or box-girder main beam keeps dead weight low, which means lower rail loads on the building structure and lower foundation costs on the leg side. The BMH uses a CD/MD wire rope hoist o polipasto eléctrico de cadena running beneath the beam — a proven combination that is easy to service and keeps bottom hook height close to the beam soffit, maximising usable lift in low-ceiling facilities.

Work duty is typically A4, suitable for production lines running single-shift or double-shift operations with moderate lift frequency. It is not the right choice for continuous multi-shift heavy cycling; in that case, step up to the BMG.

BMH Specifications (Voitto Crane)

Custom designs available. Confirm final specifications with Voitto Crane.

BMG Double Girder — For Heavy Loads, Wide Spans, and Demanding Duty Cycles

The BMG double-girder semi gantry crane for sale carries loads from 5 tonnes up to 320 tonnes and handles spans up to 24 metres. The two-girder structure keeps deflection within the FEM/ISO-recommended limits even at maximum rated load, which matters in precision fabrication environments where hook positioning accuracy is critical. The QD trolley or double-hoist trolley rides on top of the twin girders, giving the hook full span travel without the headroom penalty of an underslung arrangement.

Work duty ratings of A5 to A7 make the BMG appropriate for steel mills, precast concrete plants, and industrial maintenance yards where the crane operates multiple shifts per day with heavy loads. The robust leg design uses an A-frame triangulated structure that resists lateral racking forces during outdoor operation or when handling off-centre loads.

BMG Specifications (Voitto Crane)

Custom designs available. Confirm final specifications with Voitto Crane.

Which Type Do You Need? A Practical Decision Guide

Choose the BMH if: your heaviest single lift is ≤ 16 t, ceiling height is limited, you need a lower initial investment, or your operation is light-to-moderate frequency.

Choose the BMG if: lifts regularly exceed 10 t, span exceeds 20 m, you require dual-speed hoisting for precision positioning, or your facility runs A5+ duty cycles.

If your requirements sit at the boundary (around 10–16 t, span 18–20 m), share your full duty cycle with the Voitto Crane engineering team. Correct duty classification is the single factor most commonly under-specified by first-time buyers and has the biggest impact on long-term reliability.

💬 Not sure which configuration fits your facility? Send Voitto Crane your lifting capacity, span, ceiling height, and shift pattern — the team responds within 24 hours.

Alan

Especialista en Soluciones de Grúas · Voitto Crane

10+Años Exp.

5,000+Clientes

50+Países

Especializada en soluciones de exportación de grúas puente, grúas pórtico, grúas pluma, grúas portuarias y grúas EOT. Más de 10 años ayudando a clientes de todo el mundo con asesoramiento preventa, selección de capacidad y configuraciones específicas para cada emplazamiento.

+86 136 3963 3287 [email protected] Contacte con nosotros

Semi Gantry Crane Price: What You Will Actually Pay and Why

Market Reference Price Ranges

Voitto Crane semi gantry cranes for sale are priced in the following reference ranges based on current Chinese factory output costs:

• BMH Single Girder (2–16 t): approximately $12,000–$40,000 per unit
• BMG Double Girder (5–320 t): approximately $42,000–$70,000 for the most common industrial configurations; heavy-capacity custom units above 100 t are priced on application

These figures are factory-gate references for standard configurations shipped FOB from Henan, China. Import duty, freight, local installation, and civil works are additional costs to budget separately.

The Four Variables That Drive the Final Price

Capacity and span are the biggest drivers. A 5 t BMH at 8 m span costs roughly half the price of a 16 t BMH at 20 m span, because steel tonnage scales with both dimensions simultaneously.

Work duty rating changes the specification of the entire drive train. An A5-rated unit requires heavier-duty motors, higher-grade gearboxes, and more robust brake systems than an A3-rated unit at the same nominal capacity. Upgrading from A4 to A5 on a 10 t unit typically adds 12–18% to the purchase price.

Altura de elevación increases the hoist drum size, rope length, and the height of the leg structure — all of which add steel weight and cost. Every 5 m of additional lifting height on a BMG unit generally adds approximately 8–12% to the structural cost.

Voltage and control specification for markets outside China — such as 480 V / 60 Hz for North America or 400 V / 50 Hz for Europe — requires custom electrical components and adds 10–15 additional production days. Variable-frequency drive (VFD) upgrades for smooth start/stop add upfront cost but significantly reduce long-term mechanical wear and energy consumption.

Certifications and Compliance: What to Verify Before You Sign the Purchase Order

Which Certifications Matter for Your Market

The certificate requirements for a semi gantry crane for sale depend on your destination country.

CE marking (Directive 2006/42/EC): Required for any lifting equipment placed on the market or put into service in the European Economic Area. The supplier must provide a signed EC Declaration of Conformity naming the applicable harmonised standard (typically EN 15011 for bridge and gantry cranes). A logo on a brochure is not a certificate — ask for the original signed document.

ISO 9001: Confirms the manufacturer operates under a documented quality management system. Request the current certificate including the scope of certification and expiry date, and verify it independently with the issuing body.

FEM 1.001 / ISO 4301: These standards govern crane classification and design. Ensure the crane is designed and tested to the duty class you specified. The test report should confirm 125% overload testing was completed before shipment.

EAC (TR CU 010/2011): Required for import into Russia, Kazakhstan, Belarus, and other EAEU member states. If this applies to your market, confirm the supplier holds EAC certification specifically for crane equipment.

OSHA / ASME B30.2: If the crane will operate in the United States, the installation must comply with ASME B30.2 (overhead and gantry cranes) and OSHA 1910.179. Note that Chinese suppliers cannot provide OSHA compliance certificates — compliance is the responsibility of the site owner and the local installer.

How to Verify Supplier Certification Credibility

Request the following documents before placing an order for any semi gantry crane for sale:

1. EC Declaration of Conformity (for EU/EEA buyers) — check it names the specific crane model you are ordering
2. Overload test certificate at 125% SWL (Safe Working Load)
3. ISO 9001 certificate with current validity date — verify at the issuing body’s public registry
4. Material mill certificates for the main structural steel (S355 or equivalent)
5. Factory acceptance test (FAT) report with photos and load test data

Voitto Crane provides full documentation packages with every order. Contact the sales team to confirm which certificates apply to your destination country before finalising the specification.

Conclusión

A semi gantry crane for sale from Voitto Crane gives you the most cost-effective path to increasing workshop lifting capacity when you already have one side of building runway infrastructure in place. The BMH single-girder covers light-to-medium lifting up to 16 tonnes; the BMG double-girder handles heavy industrial applications to 320 tonnes with A5–A7 duty ratings. Both configurations are available with custom span, lifting height, voltage, and control systems to match your exact site conditions.

Three actions to take before you contact a supplier:

1. Confirm your building wall or column can structurally support the elevated rail load — this is a structural engineer assessment, not a supplier assessment.
2. Document your duty cycle: number of lifts per shift, maximum load, and operating hours per day. This determines the correct duty class and prevents under-specification.
3. Identify your required certifications for your destination market (CE, EAC, ISO 9001) and request the full documentation list from the supplier upfront.

Ready to move forward? Request a project-specific quote for a semi gantry crane for sale from Voitto Crane — include your capacity, span, lifting height, and voltage, and the team will respond within 24 hours.

Alan

Especialista en Soluciones de Grúas · Voitto Crane

10+Años Exp.

5,000+Clientes

50+Países

Especializada en soluciones de exportación de grúas puente, grúas pórtico, grúas pluma, grúas portuarias y grúas EOT. Más de 10 años ayudando a clientes de todo el mundo con asesoramiento preventa, selección de capacidad y configuraciones específicas para cada emplazamiento.

+86 136 3963 3287 [email protected] Contacte con nosotros

PREGUNTAS FRECUENTES

Q1: What is the difference between a semi gantry crane and a full gantry crane?

A semi gantry crane uses one fixed leg on the ground rail and one end carriage running on an elevated runway attached to the building structure, eliminating the need for a second ground rail and leg. A full gantry crane is self-supporting on two ground rails and is fully independent of the building. The semi gantry crane for sale is more cost-effective when building infrastructure already exists on one side, but requires a structural check of the wall or column before installation.

Q2: How much does a semi gantry crane cost?

The BMH single-girder semi gantry crane starts at around $12,000 for a 2 t / 5 m span unit and reaches approximately $40,000 for a fully specified 16 t / 20 m configuration. The BMG double-girder starts at around $42,000 and can exceed $70,000 for large-span, high-duty-cycle units. The main price drivers are lifting capacity, span, lifting height, and work duty rating. Contact Voitto Crane with your specifications for a project-specific quote.

Q3: Can a semi gantry crane be installed under an existing overhead crane?

Yes — this is one of the most common and cost-effective use cases. Because the semi gantry crane operates on a lower rail elevation than the existing overhead crane girder, both units can run in the same bay simultaneously without interference. The semi gantry’s girder height must be engineered to clear the existing crane’s minimum hook height and maintain safe headroom clearance between the two structures.

Q4: What certifications should I require when buying a semi gantry crane from China?

For European buyers: CE marking with a signed EC Declaration of Conformity under Directive 2006/42/EC, an ISO 9001 certificate, and a 125% overload test report. For EAEU markets: EAC certification under TR CU 010/2011. Always request material mill certificates for structural steel and a factory acceptance test report with load test data, regardless of your destination market.

Q5: What is the typical lead time for a semi gantry crane from a Chinese factory?

A standard BMH or BMG semi gantry crane for sale typically requires 25–35 production days after order confirmation and drawing approval. Units requiring non-standard voltage (e.g., 480 V / 60 Hz for North America) may need 10–15 additional days as electrical components require custom procurement. Ocean freight to most destinations adds 20–35 days depending on the port of entry.