Gast 16AM-13-HB20 Gear Motor

A reversible, 9.0 HP (6.7 kW) air gear motor featuring a 20:1 reduction ratio. It is an intrinsically safe, high-torque powerhouse designed for heavy-duty industrial mixing, winching, and large-scale conveyor systems in hazardous environments.

Description

The 16AM-13-HB20 is the “heavy lifter” of the Gast pneumatic line. By utilizing a 20:1 helical-bevel gearbox, the high-speed rotation of the 16AM motor is converted into immense torque at a manageable output speed. Unlike worm gears, helical-bevel gears operate with up to 95% efficiency, meaning more of the motor’s 9 HP is delivered directly to the drive shaft with less heat generation.

Because it is powered entirely by compressed air, this gear motor is inherently Explosion Proof. It generates no electrical sparks and remains cool during operation, making it the primary choice for chemical processing plants, refineries, and large-scale paint kitchens.

Brand

GAST

GAST 

Since 1921, Gast Manufacturing, Inc. has been a leader in the design and manufacturing of quality air-moving products. We specialize in offering cost effective solutions for a wide variety of industries including industrial manufacturing, healthcare, and environmental cleanup applications.

Features

  • 20:1 High-Efficiency Gearing: The helical-bevel design ensures maximum power transfer and a longer service life under heavy shock loads.
  • Massive Torque Output: Delivers up to 2,400 lb-in (271 Nm) of continuous torque, making it capable of moving extremely heavy or viscous loads.
  • Variable Speed Control: The output speed can be finely tuned from 15 to 175 RPM by simply regulating the air pressure or flow volume.
  • Explosion Proof & Safe: Fully pneumatic operation is safe for ATEX-rated hazardous zones and areas with flammable vapors.
  • Instantly Reversible: A 4-way control valve allows the motor to switch rotation directions under full load without damage.
  • Stall-Safe Design: The motor can be stalled indefinitely without the risk of burnout or fire, providing built-in overload protection.

Applications

FeatureSpecification
Max Power (at Motor)9.0 hp (6.7 kW)
Gear Ratio20:1
Output Speed Range15 – 175 RPM
Max Continuous Torque2,400 lb-in (271 Nm)
Max Air Consumption275 CFM ($467 m^3/h$)
Port Size1″ NPT
Shaft TypeHeavy-duty Keyed Shaft
Net WeightApprox. 145 lbs (66 kg)

Specifications

  • Large Industrial Agitators: Mixing high-viscosity resins, polymers, or chemicals in 500+ gallon tanks.
  • Heavy-Duty Winches: Providing spark-free pulling power for shipboard or mining equipment.
  • Primary Conveyor Drives: Powering main transport lines in bulk material handling or food processing.
  • Large Hose Reels: Retracting heavy industrial hoses in refineries or fuel depots.
  • Turn-Table Drives: Rotating heavy machinery or platforms in automated assembly plants.