70 Ton Hoist Helical Gearbox – Export Model

High-Performance | Heavy-Duty | Engineered by Gyros Gears Industries

Product Overview

The 70-Ton Hoist Helical Gearbox manufactured by Gyros Gears Industries® is engineered for extremely demanding hoisting and lifting applications. Built with precision, durability, and high load-carrying capacity, this gearbox ensures smooth operation, maximum torque transmission, and long service life in steel plants, material-handling systems, mining hoists, EOT cranes, and heavy-duty lifting mechanisms.

Technical Specifications

1. Capacity & Application

• Rated Hoisting Capacity: 70 Ton
• Application: Hoist drives, winches, EOT cranes, lifting mechanisms, material-handling systems
• Duty Type: Heavy-duty / S4–S5 intermittent hoisting duty

2. Gearbox Type

• Design: Horizontal Split Casing Helical Gearbox
• Gear Arrangement: Multistage helical gear train
• Reduction Ratio Options: Customizable (commonly 18:1 to 50:1 depending on hoist speed)
• Mounting: Foot-mounted / gearbox base frame as required

3. Gearing

• Gear Material: High-grade case carburizing steel (EN353 / EN24 / EN19 depending on stage)
• Heat Treatment: Carburized, hardened & precision ground
• Gear Accuracy: DIN Class 6 / AGMA Standard
• Tooth Profile: Helical, high contact ratio, shock-absorbing

4. Shafting & Load Handling

• Output Shaft: Heavy-duty machined steel output shaft
• Input Shaft: Designed for motor coupling / brake motor integration
• Bearing Type: Spherical roller bearings (SKF / FAG equivalent)
• Radial & Axial Load Capacity: Suitable for drum load of 70-ton hoist

5. Torque & Performance

• Rated Output Torque: Up to 1,20,000 Nm (varies with ratio)
• Service Factor: 1.5 to 2.0 (heavy hoisting duty)
• Efficiency: 95% per gear stage

6. Lubrication

• System: Splash lubrication / oil bath
• Oil Grade: ISO VG 220 / VG 320 (depending on ambient)
• Optional: Forced lubrication with oil pump & cooling coil for continuous duty

7. Housing & Construction

• Material: High-strength FG260 / SGI casting
• Design: Rigid, vibration-free, rib-reinforced casing
• Finish: Industrial-grade polyurethane paint (Gyros Turquoise Blue)

8. Motor Compatibility

• Compatible with:
• Squirrel cage motor
• Brake motor
• Flange / foot-mounted motors
• Power Range: 30 kW to 75 kW depending on speed & hoist mechanism

9. Special Features

• Heavy-duty construction for shock & impact loads
• High safety factor for hoist applications
• Smooth, vibration-free & silent running
• Designed for long service life with minimal maintenance
• Custom ratios & shaft extensions available
• Export-quality build with strict QC standards

10. Optional Attachments

• Backstop / hold-back device
• Thrust bearing arrangement
• Custom coupling for rope drum
• Forced lubrication with oil cooler
• Encoder mounting for VFD control

Why Choose Gyros Gears Industries®?

• 18+ years of gearbox manufacturing expertise
• Precision engineering with advanced machining infrastructure
• Export-grade quality with strict inspection standards
• Trusted across steel plants, mining companies, EPC contractors, crane OEMs
• Proven performance in 70-ton to 200-ton hoist applications

At Gyros Gears Industries, every gearbox is Built to Rotate, Born to Last.

Explore our complete range at www.gyrosgears.com

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