Dinamic OilDinamic Oil North America

GB Series Gearboxes

High-torque planetary gearbox family with scalable stages, service-friendly architecture, and up to 2.2 million ft-lbs.

GB Series high-torque planetary gearbox

Gearbox series

GB Series

GB Series is Dinamic Oil's most extensive high-torque range, designed for demanding industrial duty with strong thermal and mechanical performance.

The family combines 98% stage efficiency, modular construction, and large output ratings from 88,560 ft-lbs to 2.2 million ft-lbs nominal torque.

88,560 to 2.2 million ft-lbs nominal torque

Specifications

GB Series max output torque

Reference selection chart for nominal torque levels by GB model.

GB Series nominal max output torque by model
ModelTorque (ft-lbs)Torque (Nm)
GB 12100207,254281,000
GB 16000263,309357,000
GB 21000299,450406,000
GB 26000398,283540,000
GB 31000479,415650,000
GB 40000479,415650,000
GB 45000479,415650,000
GB 53000878,4361,191,000
GB 61000966,2061,310,000
GB 85000966,2061,310,000
GB 1100001,659,5142,250,000
GB 1300002,006,1692,720,000
GB 1500002,006,1692,720,000
GB 2050002,669,9743,620,000
GB 2350002,669,9743,620,000

Capabilities

Key features

Highlights curated from the official series page, adapted into a cleaner technical summary.

  • Large output capability up to 2.2 million ft-lbs
  • 1 to 6 reduction stages with multiple ratios
  • One-piece integrated output shaft/primary carrier for pull-out resistance
  • Sectional design for easier maintenance
  • 98% efficient planetary gears
  • Quiet and smooth transmission profile
  • Stocked in Charlotte, North Carolina

Accessories

Common options across the gearbox family

Accessory availability varies by model and configuration; final selection depends on application and integration requirements.

  • Negative static multi-disc brakes
  • NEMA and IEC electric motor inputs (RE / GB / HyPer families)
  • Foot supports
  • Torque arms and shrink discs
  • Two-speed inputs and disconnects
  • Water cooling jackets

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