R K ENGINEERING WORKS is a double girder EOT crane manufacturer in Jaipur, building heavy-duty cranes for steel, cement, power and engineering plants across Rajasthan and North India. Every crane is custom-engineered for your load, span, lift height and duty class, designed to IS 3177 and IS 807, and load-tested at 125% of safe working load at your site. Since 1998. ISO 9001, ISO 14001 and ISO 45001 certified.
Book a site survey | Request an engineering consultation | Call +91 9799108009
What is a double girder EOT crane?
A double girder EOT crane has two main girders across the bay. The crab (trolley) with the hoist runs on its own rails on top of the girders, and the hook comes down between them. This gives three gains over a single girder crane:
- More hook height – you use more of your building height.
- More strength and stiffness – two box girders carry heavy loads over long spans with less deflection.
- More room for features – auxiliary hoist, walkways, maintenance platforms, cabin and heavy-duty drives.
Single girder or double girder: a quick check
| Your need | Single girder | Double girder |
|---|---|---|
| Load | Light to medium | Medium to very heavy |
| Span | Short to medium | Medium to long |
| Duty class (IS 3177) | Up to about M5 | M5 to M8 |
| Hook height | Good | Highest for the same building |
| Auxiliary hoist | Not usual | Easy to add |
| Maintenance walkway | Limited | Full-length walkway possible |
| Cabin operation | Not usual | Yes |
| Typical plants | Workshops, assembly, stores | Steel, cement, power, heavy fabrication, process plants |
More detail in our guide: single vs double girder EOT crane.
How we engineer your double girder crane
1. Girders and structure
- Welded box girders in IS 2062 structural steel, designed to IS 807 for strength, fatigue and deflection.
- Deflection checked against the limit in your specification (commonly span/750 to span/1000).
- Main girder butt welds checked by ultrasonic or dye-penetrant testing as per the QAP.
- End carriages with machined wheel seats, so wheels run true and wear stays low.
2. Crab: open winch or wire rope hoist
| Crab type | How it is built | Right choice when |
|---|---|---|
| Open winch crab | Separate crane-duty motor, gearbox, brake and grooved drum on a steel frame | Heavy, frequent duty (M6-M8), easy inspection – steel, cement, power |
| Wire rope hoist crab | Compact hoist unit on a crab frame, as per IS 3938 | Regular duty (M4-M5), low headroom, quick installation |
We select rope, drum, sheaves, hook and brakes for the mechanism class, and give the rope discard criteria in the O&M manual.
3. Drives and electrics
- Crane-duty motors rated for the duty cycle of your process.
- VFD drives for smooth start and stop, less swing and accurate positioning (on request).
- DSL busbar for long travel and festoon cable for cross travel.
- Panel with overload, phase and earth-fault protection; IP rating matched to dust and heat at site.
4. Safety systems
- Overload protection on main and auxiliary hoist
- Upper and lower hoist limit switches (a second, independent upper limit on request)
- Travel limit switches, end buffers and rail sweepers
- Emergency stop, main isolator, warning horn and travel lights
- Anti-collision for two cranes on one gantry (on request)
- Walkway with hand-rails and safe access ladder
What you get with every double girder crane
| Document / test | When |
|---|---|
| GA drawing with duty class and wheel loads | Before fabrication, for your approval |
| Design calculations (girder, end carriage, mechanisms) | With the GA drawing |
| QAP with inspection stages (you or your TPI can witness) | Before fabrication |
| Material test certificates | At dispatch |
| Factory test report for hoist and panel | Before dispatch |
| Site load test certificate: 125% static test, running tests, deflection check | At commissioning |
| O&M manual, spares list, operator and maintenance training | At handover |
Industries we build double girder cranes for
- Steel and metal processing: coil, slab and scrap handling, rolling mill maintenance.
- Cement: kiln and mill maintenance, packing plant, dusty sites with sealed motors and panels.
- Power plants and substations: turbine hall and pump house maintenance cranes.
- Heavy engineering and fabrication: large weldments, assembly and dispatch bays.
- Automobile and process plants: die handling, press shop maintenance.
- Public-sector units and Railways workshops: cranes with full documents for inspection.
Already running an old double girder crane?
We inspect, repair and modernise double girder cranes: new crab or hoist, VFD panel, radio remote, limit switches, conductor system, wheel and rail correction, and a fresh load test with certificate.
Where we work
From our works at VKI Area, Jaipur, we serve Sitapura, Bagru, Kaladera and all RIICO areas around Jaipur, plus Bhiwadi, Neemrana, Alwar, Kota, Chittorgarh, Ajmer, Bhilwara, Jodhpur, Udaipur, Sikar and Bikaner, and projects across North India and pan-India.
Frequently asked questions
Can a double girder EOT crane have an auxiliary hoist?
Yes. A double girder crab can carry a main hoist and a smaller, faster auxiliary hoist, so one crane handles heavy lifts and quick light lifts such as tilting or turning jobs.
Will my existing building and gantry girder take a new double girder crane?
We check it before design. We take the rail size, gantry girder, column and clear height details, give you the crane wheel loads, and tell you clearly if the structure needs a check by your structural consultant.
Pendant, radio remote or cabin – which control is right?
Radio remote suits most production bays because the operator can stand at a safe distance. A cabin suits long spans, high duty, hot or dusty areas and steel plants. A pendant is kept as a backup or for simple maintenance cranes.
What is the price of a double girder EOT crane?
Each crane is engineered for its load, span, lift height and duty class, so we share the price on request after a site study, with the GA drawing and technical details.
Request an engineering consultation – share capacity, auxiliary hoist, span, lift height, duty, indoor/outdoor, timeline and site location. Main page: EOT crane manufacturer in Jaipur.