The lifting machine that carries the top of the range — up to 160 tonnes on a trolley running over two girders, machined and load-tested in our own plant before it goes onto your crane.
A double girder hoist is the lifting machine mounted on a trolley that runs on top of the two main girders of an overhead crane. Because it sits above the girders rather than under a beam, it reaches a longer hook path and carries far higher capacities than an underslung machine.
Type routing
The mounting follows from the crane, and the crane follows from the work.
A single girder machine hangs from, or sits beside, one beam. It is lighter, it costs less, and in a short building it can be the better answer because it keeps the hook high.
A double girder machine rides on top of two girders. That gives you the longest hook path, the highest capacities and the room to carry a walkway, an operator cab or a special attachment on the same crane. Once the load is past about 10 to 20 tonnes, or the crane runs heavy continuous cycles, it is the machine that carries the work.
Most crane builders buy the lifting machine and build the structure around it. We build both.
The hoist unit is machined, assembled and load-tested in our facility in İzmir, alongside the steel structure, the end carriages and wheel groups and the operator cab that go onto the same crane. That means the duty class is set for a machine we are about to make, so the drum diameter, the reeving and the motor rating follow your load spectrum rather than the nearest step in a supplier's range.
It also means the machine has one owner for its whole life. When a rope, a brake or a whole hoist unit needs attention in ten years, the drawings and the people who built it are in the same building.
Manufacturing
“From our plant to your hook”
Technical data
Read each value with its consequence — that is how the machine is actually sized for your crane.
Our wire rope hoists cover 250 kg to 160 tonnes as a standard selection range, above which we engineer per project, and the double girder mounting is what carries the upper end of that band. Hoisting is stepless under inverter control, 2.3 to 8 m/min, set by the series, the reeving and the duty class, in two speeds, so the load travels quickly and then creeps for accurate setting. The duty class runs the full range from FEM 1Bm (ISO M3) to FEM 5m (ISO M8) and is set for your cycle, because a machine lifting near capacity across three shifts is a different machine from one lifting occasionally at the same rating.
| Criterion | Double girder hoist | Single girder hoist (underhung / side-mounted) |
|---|---|---|
| Where it sits | On a trolley on top of two girders | Under, or beside, one beam |
| Hook path | Longest | Shorter — but maximised in a low building |
| Capacity band | 1 – 160 t on the double girder selection table | Underhung mounting runs to 6.3 t |
| Attachments, walkway, cab | Can be carried on the same crane | Limited |
| Typical reason to choose | Heavy loads, long hook path, continuous duty | Short building, hook height is the constraint |
| ABRA page | this page | underhung · side-mounted |
| Parameter | Value | Consequence / note |
|---|---|---|
| Lifting capacity (SWL) | 250 kg – 160 t (double girder mounting carries the upper band) | Workshop duty to heavy process lifting |
| Duty class | FEM 1Bm–5m (ISO M3–M8), per project | Sized to load spectrum × running hours, not peak load alone |
| Hoisting speed | Stepless, 2.3 – 8 m/min depending on series, reeving and duty class — 8 m/min on the light two-fall machines, about 2.3 m/min at the top of the range | Standard values from the selection tables; micro-speed for accurate setting |
| Trolley travel speed | 4–16 m/min to 2 t · 5–20 from 3.2 to 20 t · 5–20/25 at 25–32 t · 5–20/25/30 from 40 t | Set with the capacity and the cycle |
| Series (double girder mounting) | BR23 · BR33 · BR36 · BR46 · BR58 · BR68 | The series follows capacity, reeving and duty |
| Hoisting motor | 0.25 – 90 kW | Sized with capacity, speed and duty |
| Travel motor | 0.18 – 2 × 5.5 kW | Single or twin drive |
| Lifting height (machine) | 4 – 28 m standard | Longer hook paths per project |
| Machine weight | 139 – 25,250 kg | Carried into the girder and runway calculation |
| Machine duty class | FEM 1Am (ISO M4) or FEM 2m (ISO M5) | Crane-level duty runs FEM 1Bm–5m |
| Brake | Spring-applied electromagnetic brake — closes when power is cut | Holds the load on power loss; release ≈ 0.3 s |
| Reeving | 2/1 · 4/1 · 6/1 · 8/1 · 12/2 | Sets drum length, rope life and hoisting speed |
| True vertical lift | Twin-grooved drum | Hook rises straight; matters when landing into a fixture |
| Hook path / lifting height | Per project | Follows building height and pit depth |
| Hook approach (C / H dimension) | Per project | Decides how close to the wall the hook can work |
| Motion control | Inverter (VFD) | Soft start/stop, reduced sway, gentler on rope and structure |
| Overload protection | Overload switch + load cell, standard | The machine refuses a lift beyond its rating |
| Redundant brake | Option | Second circuit holds the load if the first fails |
| Power supply | 380–415 V / 50 Hz (60 Hz for export) | Matches local and export grids |
| Protection class | IP54 / IP55 (motor + panel) | Dust and moisture protection for industrial environments |
| Ambient temperature | −10 … +50 °C | Cold-store to hot-process ranges |
| Control | Radio remote / pendant / operator cab | Operator cab made in-house |
| ATEX version | Engineered per project | See Explosion-protected cranes |
| Standards | EN 14492-2 · EN 13001 series · ISO 4301-1 · FEM 9.511 (complementary) · EN IEC 60204-32 · CE · ISO 9001 | Duty class stated per project |
The speeds shown are standard values; other speeds are provided on request. Where a value depends on your site, it is written “per project” and confirmed with you.
Three decisions inside the machine decide how it behaves on your floor.
Reeving describes how the rope runs between the drum and the hook block: 2/1, 4/1, 6/1, 8/1 or 12/2. More rope falls share the load, which lets a given drum and motor lift more, but they also lengthen the drum and change the hoisting speed. It is one of the first things an engineer fixes when sizing the machine.
Drum and rope geometry set rope life. The ratio between drum diameter and rope diameter governs how sharply the rope is bent every cycle, and a machine running a high duty class needs more room there than one that lifts twice a shift.
True vertical lift comes from a twin-grooved drum, where the rope pays off from both ends at once. The hook rises straight instead of drifting sideways as the drum fills, which matters when you are landing into a fixture, a machine bed or a mould rather than onto open floor.
Equipment
An overload switch and load cell come as standard on every product we build, so the machine refuses a lift beyond its rating.
Soft starts and stops, which reduces load sway and takes shock out of the rope and the structure.
Inverter-controlled from zero, so the load travels quickly and then creeps into place under micro-speed.
If one brake circuit fails, the second holds the load; specified for critical or heavy lifts.
Hoisting and travel limits defined per project.
Running hours, condition and maintenance data from the machine itself; see Crane Tracking.
For explosive atmospheres the same machine is engineered as an explosion-protected system; see Explosion-protected cranes.
Applications
The machine is specified by the duty behind it. Steel and metal service handles coil, billet and ladle on high classes. Foundries run hot loads on continuous cycles. Cement, energy and mining put long hook paths and dusty environments on top of the load. Machine building and automotive need the hook to land accurately into a fixture rather than simply to lift.
Project process
(load, hook path, cycles per hour, shifts, environment) → 2. Engineering & quotation (we confirm the duty class, the reeving and the drum arrangement, and flag any spec deviation before you sign) → 3. Manufacturing & testing (machined, assembled and load-tested in our plant, then commissioned on site) → 4. Maintenance & service (scheduled maintenance under an annual contract, spare parts and modernisation).
After-sales
Maintenance is agreed under an annual contract: scheduled maintenance (4 visits a year under contract), spare parts, modernisation and breakdown support across Türkiye within 48 hours of a call, and a 2-year warranty. We also service, supply parts for and modernise lifting machines from other makes. One number: Crane Contact Center 444 8 440.
FAQ
The hoist is the machine that lifts; the crane is the structure that carries it across the building. A double girder crane has two main girders, an end carriage at each end and a runway to travel on. The double girder hoist is the trolley unit that rides on top of those girders and does the lifting. We build both.
Our wire rope hoists cover 250 kg to 160 tonnes and the double girder mounting carries the upper part of that range. What you can run at depends on the reeving, the hook path and the duty class behind it. Send us the load and the cycle and an engineer confirms the combination.
On an ordinary drum the rope pays off from one end, so the hook drifts sideways slightly as the drum fills. A twin-grooved drum pays off from both ends at once and the hook rises straight. You need it when the load has to land in a defined place — a fixture, a machine bed, a mould — rather than on open floor.
The class comes from your load spectrum and how many hours the machine runs, not from the maximum load alone. A hoist lifting near capacity across three shifts, or working on a continuous charging duty, needs a high class (FEM 4m–5m / ISO M7–M8); a lighter single-shift machine needs less. We size the class to your real cycle so the machine does not fatigue early. See the duty class guide.
Get a recommendation
Send us the load, the hook path, the cycles and the environment. An engineer confirms the reeving, the drum arrangement and the duty class with you — no obligation.
Or call 444 8 440
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Designed and built to EN, FEM and ISO standards · CE marked · duty class defined per project (our build range: FEM 1Bm–5m / ISO M3–M8) · manufacturing in İzmir since 2004
