• Mar 10, 2026
• Case Studies

3T HD and 3T LD Single Girder Overhead Cranes for Turkey

Discover 3T HD and 3T LD single girder overhead cranes designed for Turkey's needs. Reliable, efficient lifting solutions to boost your operations today!

A industrial manufacturer in Turkey needed a compact lifting solution for its production line. The plant processes medium‑size machine parts and assemblies up to 3 tons. They had limited overhead clearance (about 6–7 m). After reviewing options, we supplied two custom crane systems: a 3 ton HD (European‑style) single‑girder overhead crane with an NR wire rope hoist, and a 3 ton LD (traditional) single‑girder overhead crane with an MD dual‑speed hoist. Both span 15.7 m, but the HD crane lifts to 6.6 m and the LD to 5.97 m. These cranes address the customer's specific needs: smooth heavy lifting in a tight, high‑usage environment. The HD crane's design emphasizes efficiency and low profile, while the LD crane is a cost‑effective rugged solution. By installing both, the customer now handles production and maintenance lifts more safely and faster, without excessive floor equipment. Post‑install feedback has been excellent: both systems perform reliably, giving predictable cycle times and low maintenance.

Client Background & Challenges

Customers contact us through our website. Precision machinery manufacturing plant (Turkey). The client fabricates and assembles mechanical components (casts, steel parts) up to 3 tons. They have multiple machining and assembly stations aligned under a roof of roughly 7 m height. Previously, operators relied on forklifts and mobile gantry lifts. This caused delays: forklifts often had to queue or navigate awkwardly between machines, and portable gantries couldn't handle the frequent 3 t lifts. The key pain point was inefficient material flow and workplace safety issues. In narrow bays, forklifts risk tail-swing collisions. They also wanted CE/ISO‑compliant gear to meet contractor standards, and cost‑effective options suitable for moderate‑duty use.

Lifting Solutions Provided

To meet these needs, we delivered two overhead crane systems for two different bays:

• 3 ton HD Single‑Girder Overhead Crane (European style): This high‑duty crane spans 15.7 m and lifts to 6.6 m. It uses a box‑girder European design, fully welded and lightweight, equipped with a Euro‑standard NR wire rope hoist for smooth operation. Control is via a pendant station. The HD crane is built for frequent use (ISO/CMAA Class A5) and high precision in handling heavy parts. Its lower profile and lighter construction save building resources and provide extra headroom.
• 3 ton LD Single‑Girder Overhead Crane (Traditional design): Also spanning 15.7 m, this crane lifts to 5.97 m. It follows the conventional LD design (I‑beam welded flange girder). It carries a robust MD (dual‑speed) wire rope hoist. The LD crane is optimized for cost and simplicity, suitable for continuous workshop use. It can still operate at moderate speed with heavy loads. Control is again by pendant. The LD crane's simpler construction makes it easier to install in the constrained building bay.

Why two cranes? The plant has two critical zones: one needs a slightly higher hook height (6.6 m) for certain machining centers, and the other has lower ceiling so 6.0 m was sufficient. Using both an HD and an LD crane was cost‑effective: the LD model handles lighter, repetitive duties reliably, while the HD crane offers energy savings and compactness where needed. Together they cover all handling tasks on the line, eliminating delays and improving safety.

HD Crane Design Details

The HD (Heavy Duty, European style) crane uses a box‑girder bridge for rigidity with minimal self-weight. Key parameters:

• Capacity: 3,000 kg SWL, equipped with safety factor per ISO/CMAA.
• Span: 15.7 m (custom fit to bay width).
• Lift Height: 6.6 m under hook – maximizes available vertical space.
• Duty Classification: ISO/CMAA Class A5 (suitable for ~8–10 hours/day heavy operation).
• Structure: Box‑section main girder welded from high‑strength steel (European FEM design). The bridge is supported by two end carriages on runway rails. European cranes typically reduce dead weight ~20–30% vs. old types, and ours follows this trend.
• Hoist: Euro NR wire rope hoist (CE‑certified). This 3 t hoist has dual lifting speeds (~8 m/min and 0.8 m/min) for rapid lifts and precise placement. NR hoists have proven durability – they passed a 1600 hr fatigue test, with electrical cycles >500,000 and brake cycles >1,000,000. The large drum drum design raises the hook height slightly, utilizing the 6.6 m available.
• Travel: Bridge travel speed ~20 m/min; trolley (hoist) travel ~10 m/min. These are typical for dual‑speed systems and balance efficiency vs. control.
• Control: Wired pendant station (with up/down, forward/back controls and emergency stop). We offered optional wireless remote, but the customer chose pendant for simplicity and reliability. All controls (motors and pendants) are ruggedized for industrial use.
• Safety: Features include mechanical end stops on bridge, upper/lower hoist limits, a load limiter (overload cutout), and an emergency-stop circuit spanning the crane. These meet European and Turkish crane safety norms. The hoist's hook is high-strength T‑class forging.

The HD crane's design advantages are its compact profile and efficiency. In practice, our HD crane's lower dead weight meant the runway beams and foundations could be lighter, reducing project cost. The built‑in inverter control also saves energy: the NR hoist's motor uses ~30% less power than a traditional hoist, and its variable-frequency drive improves energy efficiency by 20%. Noise is also lower, which benefits worker comfort during long shifts.

LD Crane Design Details

The LD (Light Duty, traditional style) crane uses an I-beam girder. Key parameters:

• Capacity: 3,000 kg SWL.
• Span: 15.7 m.
• Lift Height: 5.97 m under hook.
• Structure: Welded steel I-beam main girder with end carriages. While not as lightweight as the HD crane, it is very rugged (designed to A3–A5 class).
• Hoist: MD dual‑speed wire rope hoist. For our 3 t MD model, lifting speeds are 8.8 m/min (fast) and 0.8 m/min (fine). We selected this model because it's a proven workhorse for workshop cranes. The MD hoist shares many parts with the CD hoist but adds a geared high speed. It's simpler and cheaper than the NR hoist, yet handles frequent stops/starts well.
• Control: Also pendant pushbuttons (with soft‑start for smooth motion).
• Safety: Includes standard features: limit switches, overload device, etc. It meets ISO/CMAA Class A3–A5 specs.

Because the LD crane is simpler, it has easier access for maintenance. The MD hoist's mechanical design is proven, and spare parts are inexpensive. We recommended it for areas with heavy throughput and less stringent precision needs. The LD crane's end trucks use hardened steel wheels and gear reducers tested for durability (we verify these on commissioning).

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Design, Manufacturing, and Commissioning

After confirming the customer's project requirements, we can first understand the layout of the customer's workshop and the basic situation, after a detailed discussion to determine the specifications of the crane parameters first. The customer's shop has building columns that can support the new track beams without additional remodeling. Our engineers then provided detailed drawings, including crane layout, track elevation and electrical wiring diagrams for the customer to view. After revisions, the final drawings were finalized and the factory began production of the crane. The HD crane box girder and the LD crane I-beam were fabricated and welded using controlled processes, and all key welds were inspected using non-destructive testing to ensure structural integrity. Motors, gearboxes, and hoists were installed, and the HD crane bridge was partially pre-assembled to confirm alignment and fit. Before delivery, both cranes were assembled on our factory test rails where we carried out full functional checks. No-load tests verified the smooth movement of the bridge, trolley, and hoist, and then proof load tests at 125% capacity confirmed the safety of the braking system, limit switches, and overload protection. After confirming that all parts are in good working order and that all parts are not missing, we ship the individual parts to Turkey.

Challenges Encountered & Solutions

Every crane project brings unique challenges. This project in Turkey was no different. The workshop had several limitations related to building height, available space, equipment sensitivity, and local regulations. Our engineering team worked closely with the client to study the site conditions and operating needs. We focused on practical solutions that would improve lifting efficiency without requiring major structural changes to the building.

1. Headroom Constraints

The facility had limited ceiling height, which restricted the available lifting space. This is a common issue in many existing workshops where the building was not originally designed for overhead cranes. To make the most of the available headroom, we selected the HD single-girder overhead crane because it provides higher hook travel than standard designs. The crane offers a lifting height of 6.6 meters, which helps you maximize vertical space when moving materials. The NR wire rope hoist also plays an important role. Its large drum design allows the wire rope to wind efficiently while maintaining stable lifting performance. For the LD crane, the available lifting height of 5.97 meters met the customer's normal operating needs. If future production requires more height or different lifting conditions, custom configurations such as adjusted beam structures or hoist arrangements can also be considered. Yuantai Crane offers two efficient single-girder overhead crane solutions for space-limited facilities. The ceiling-mounted suspension overhead crane hangs directly from the building ceiling or roof trusses, saving floor space and ideal for tight layouts or obstructed areas. The LDP low headroom bridge crane uses a compact, side-mounted hoist design to maximize lifting height in low-clearance workshops without major structural changes.

2. Limited Space

The workshop layout also limited the available structural space for crane installation. A double-girder overhead crane would normally require larger runway beams and deeper support structures. That type of system would have increased the load on the building columns and reduced the usable workspace below. To avoid these issues, we recommended single-girder cranes. The HD bridge crane uses a strong box-girder design that provides excellent rigidity while keeping the overall structure compact. The LD crane uses a traditional I-beam girder that is lightweight and economical. Both cranes use compact end carriages, which helps keep the overall footprint small. This design allows forklifts and other vehicles to continue moving through idle areas beneath the runway without obstruction.

3. Vibration and Shock

Smooth crane movement was another important requirement because some equipment in the facility is sensitive to vibration. Sudden starts or stops can create shocks that may affect nearby machines or suspended loads. To prevent this problem, the HD crane uses variable frequency drive (VFD) technology. The VFD allows the crane to accelerate and decelerate gradually, creating soft starts and smooth motion during lifting and travel. This greatly reduces mechanical stress and improves load control. The LD crane uses a simpler motor system, but the design includes built-in damping that helps reduce vibration during operation. During commissioning, we conducted lifting tests with calibrated weights to verify that both cranes moved smoothly.

Other Applications of Single Girder Overhead Crane

Single girder overhead cranes like the 3-ton HD and LD models used in this project are widely applied in many industries. They provide a practical way to move medium-weight materials safely and efficiently inside workshops or production buildings. Many factories need reliable lifting equipment but do not require large or complex cranes. In these situations, a single girder crane becomes a smart solution because it combines simple structure, stable performance, and cost efficiency. Both HD European-style cranes and LD traditional cranes can support daily production tasks such as material transfer, equipment assembly, and maintenance operations. If you are planning to improve workflow inside your facility, a crane in the 3–5 ton range is often an ideal starting point.

1. Manufacturing Plants

Manufacturing facilities often rely on overhead cranes to keep production lines running smoothly. A single girder crane can lift motors, gearboxes, molds, or other medium-weight components used in machinery, vehicle parts, or appliance assembly. This reduces congestion on the shop floor and improves safety. In an auto parts factory or machining workshop, an HD single girder crane is especially useful because its compact hoist design provides higher lifting height.

2. Metal Fabrication & Warehouses

Metal fabrication workshops frequently handle steel plates, welded frames, and fabricated components. These materials are heavy and difficult to move manually. A overhead crane helps workers transfer materials between cutting tables, welding areas, and finishing stations. The HD crane works well in workshops with limited headroom because its low-headroom hoist design maximizes the available lifting height. On the other hand, an LD crane offers a simple and cost-effective solution for large warehouses where loads are lighter but still require mechanical handling. In storage areas, the crane can quickly move steel products, spare parts, or packaged equipment from one bay to another.

3. Maintenance Bays

Maintenance workshops in power plants, mining facilities, or industrial service centers often need lifting equipment to remove or install heavy machine components. Technicians may need to lift pumps, motors, gear units, or other parts for inspection and repair. Installing a single girder overhead crane allows these tasks to be completed safely and efficiently. In many existing buildings, space is limited and installing large cranes or multiple jib cranes is not practical. In these cases, HD or LD cranes can be installed on existing runway beams or building structures, making them a convenient retrofit solution for older workshops.

4. Construction Support

Facilities that produce building materials, such as precast concrete plants or block manufacturing yards, also benefit from bridge cranes. Workers often need to move molds, reinforcement frames, or finished concrete blocks during production. A single girder crane provides reliable lifting support for these tasks. Because HD cranes can be installed on existing steel beams, they are often used in production halls where structural modifications must be minimized.

FAQs

• What is an HD single girder overhead crane?
  An HD bridge crane typically has a box‑section girder and European-standard components (motors, hoists). HD cranes are designed for continuous, heavy usage (ISO class A5 or A6) and have lighter, low‑profile design features. They provide more headroom and energy savings than older designs.
• What is an LD single girder overhead crane?
  It is a traditional overhead crane with an I-beam girder. LD cranes are simple and sturdy, usually class A3–A4 duty. They are often cheaper than HD cranes and are ideal for general lifting tasks in workshops and warehouses.
• What is an NR wire rope hoist?
  The NR series is a European-style electric wire rope hoist. It's built to ISO/FEM standards and used in modern overhead cranes. NR hoists feature dual-speed lifting and high-strength brake systems. According to manufacturer tests, they have very long life spans. They often include advanced features like variable-frequency drives for precision and efficiency.
• What is an MD two-speed wire rope hoist?
  An MD hoist is a common type of industrial hoist with two lifting speeds. It's essentially a dual-speed version of a CD hoist. The high speed lets the operator lift loads quickly, and the low speed allows fine positioning. It is a mature and reliable design frequently used with traditional single-girder cranes.
• How do HD and LD cranes differ, and how do I choose?
  The choice depends on application. HD (European) cranes are more expensive but offer higher efficiency, lower weight, and more features (like smoother drives). They are ideal for 24/7 operation or when extra headroom is critical. LD (traditional) cranes cost less and are simpler to maintain, good for cost-sensitive projects or lighter usage. For example, an HD crane might be chosen in a food plant or electronics line where energy savings and precise control matter, whereas an LD crane might suffice in a steel workshop.
• What tests are required for these cranes?
  International standards call for a load test at 125% of rated load before use, to certify safety. We performed these tests on-site for both cranes. Other tests include function checks, limit switch tests, and brake tests. These are industry-accepted commissioning procedures.