Jib Crane vs Gantry Crane vs EOT Crane: Engineering Selection Guide for Plant Engineers

Three Crane Types, One Decision That Shapes Your Facility Layout

The overhead material handling system you install today determines your facility's operational flexibility for 20+ years. EOT cranes, gantry cranes, and jib cranes are not interchangeable alternatives — each has a specific engineering envelope in which it excels.

Specifying the wrong crane type is expensive: not just in purchase cost, but in the civil structure that supports it, the interference it creates with other equipment, and the limitations it imposes on how your facility can evolve.

This guide provides an engineering-based comparison across the parameters that actually determine the right crane for your application.

Crane Type Definitions

Electric Overhead Travelling (EOT) Crane: A bridge crane running on elevated runway rails fixed to the building structure or dedicated columns. The bridge traverses the bay on the runways; the hoist trolley traverses along the bridge. Provides full bay coverage.

Gantry Crane: Structurally similar to an EOT crane but runs on ground-level rails or rubber-tyred wheels. The bridge is supported by legs running at floor level. Does not require a structural crane runway in the building.

Jib Crane: A single-arm (jib) fixed to a pillar or wall bracket, rotating around a fixed vertical axis. The hoist traverses along the jib arm. Serves a circular or arc working area rather than a full bay.

The 12-Parameter Selection Matrix

Application Scenarios: Which Crane for Which Situation?

When to Choose an EOT Crane

EOT cranes are the correct choice when:

• You need to serve the full width and length of a production bay
• Capacity exceeds 5 tonne or duty exceeds FEM M4
• Building is purpose-designed or can be structurally upgraded for crane runway loads
• Process requires two cranes tandeming (e.g., steel ladle handling, long section lifting)
• High headroom is critical (EOT runway maximises available lift height)

Typical EOT applications: Steel mills (ladle cranes, charging cranes), automotive assembly plants, heavy fabrication workshops, paper mills, power plant maintenance bays, shipbuilding shops, cement plant equipment halls.

Indian market pricing benchmarks (2026):

When to Choose a Gantry Crane

Gantry cranes are the correct choice when:

• You need crane coverage in an area without an overhead structure (open yard, erection shop with lightweight roof)
• The building cannot support an overhead runway (retrofit constraint)
• You need to move the crane between locations (rubber-tyred portal gantries)
• Outdoor operation is required — for precast, construction, or yards
• Spans up to 20–25m are sufficient

Typical gantry applications: Precast concrete yards, rail component handling, transformer assembly and testing, outdoor storage yards, drydock (ship repair), container handling (RTG/RMG cranes at ports are a specialised gantry type).

Gantry crane benchmarks:

When to Choose a Jib Crane

Jib cranes are the correct choice when:

• You need to serve a single workstation or a small circular work area (machining, welding, assembly)
• Capacity requirements are below 3 tonne
• You need to supplement an EOT crane with fine-positioning capability at the workstation level
• Building structure cannot support additional EOT crane loads
• Fast installation and low civil cost are priorities

Typical jib crane applications: CNC machine tool service bays, welding stations, maintenance pits, loading dock positions, foundry pouring stations, press shops.

Jib crane benchmarks:

The Hybrid Solution: EOT + Jib Combination

The most effective material handling systems in high-precision manufacturing use a combination:

• EOT crane for inter-bay movement, heavy lifts, and loading/unloading at bay ends
• Jib cranes at each workstation for local positioning, rotation, and assembly tasks

The EOT crane brings the load into the workstation; the jib crane handles fine positioning within the station. This combination eliminates double-handling and reduces cycle time significantly.

A commonly underspecified scenario: An automotive parts machining facility with 12 CNC centres installs a single 5t EOT crane for the entire bay. In practice, the EOT crane cannot serve all 12 stations simultaneously, creating production bottlenecks. Adding 500 kg jib cranes at each station at ₹60,000–90,000 each eliminates the bottleneck for a fraction of the cost of a second EOT runway.

Building Structural Considerations

EOT Crane Runway Loading

The crane runway structure — typically a welded steel runway beam with rail — must be designed for:

• Vertical wheel loads: Maximum wheel load at full rated capacity; includes dynamic load factors (typically 1.1–1.3× static load)
• Horizontal lateral force: From bridge drive acceleration; typically 10–20% of hoist load
• Horizontal longitudinal force: From long-travel drive; typically 10% of lifted load
• Fatigue: Runway structures at M5+ duty must be designed for fatigue per AISC, MBMA, or IS criteria

The most common structural error in EOT crane specification: Not communicating the crane wheel load diagram to the building structural engineer early enough. Runway beam sizing changes the column sizes, foundation loads, and building bay geometry. Late specification of crane loads results in expensive structural modifications.

Gantry Rail / Ground Condition

Ground-mounted gantry cranes on fixed rails require:

• Concrete ground beam sized for wheel loads; typically 300–600mm wide × 400–800mm deep for 10–30t cranes
• Rail to be continuously supported and fixed at 600–1200mm centres
• Ground surface graded and maintained to prevent rail settlement

Rubber-tyred gantries require:

• Hardstanding surface rated for axle loads; check with gantry manufacturer
• Maximum surface slope: typically 0.5–1% for safe travel

Decision Framework: Rapid Selection Guide

Apply these filters in order:

Filter 1 — Coverage: Do you need to cover an entire bay (full rectangle)? → EOT or Gantry. Do you need to serve one workstation? → Jib.

Filter 2 — Structure: Is a dedicated overhead crane runway feasible? → EOT. No overhead structure available? → Gantry or Jib.

Filter 3 — Capacity: Above 10t? → EOT or Gantry (Jib impractical above 5t). Below 5t? → Any type economically viable.

Filter 4 — Portability: Need to move the crane? → Rubber-tyred Gantry. Fixed position acceptable? → Any type.

Filter 5 — Duty: M5 or above? → EOT or heavy duty Gantry. M4 or below? → Any type.

Filter 6 — Timeline: Need crane operational within 8 weeks? → Jib (fastest) or small Gantry. Can wait 20+ weeks? → EOT (purpose-built).

Key Takeaways