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The Pullmaster Model M18 is a high performance, high efficiency planetary winch having equal speed in forward and reverse rotation. The automatic, multi-disc brake of this unit is effective in one direction only and achieves exceptionally smooth lowering control of the maximum rated load in a stepless operation.

Pullmaster Model M18 planetary winch is powered by a hydraulic gear motor and the required reduction ratio of 39.56:1 is established by two planetary reduction stages. In forward (hoisting) rotation the hydraulic motor drives direct into the planetary reduction stages without affecting the brake assembly. When forward (hoisting) rotation is stopped, an over-running clutch, located between the brake assembly and the motor drive shaft, locks and the multi-disc brake will positively hold the maximum load with a safety factor of 3:1.

The multi-disc brake is spring applied and pressure released, requiring no calbiration or safe operation. When the hyrdraulic motor is powered for reverse rotation (lowering) the brake is released automatically and is then modulated for the desired lowering speed by a single control lever. A counter-balance valve or brake valve is not required for dynamic braking. All moving parts of the Pullmaster Model M18 planetary winch are totally enclosed and run in an oil bath, assuring long, trouble free service with a minimum requirement for maintenance.

Model M18

Pulling Capacity: 18,000 lbs.
Weight: 745 lbs.

Product Festures:

• Optional Hydraulic Motors.
• Stainless Steel Drum Seal Surfaces.
• Internal spring applied, hydraulically released brake with unidirectional sprag clutch.
• Unidirectional sprag clutch.
• Planetary gear train with anti-friction bearings used throughout winch assembly.

Product Benefits:

• Optimizes winch performance to hydraulic system
• Promotes extended seal life
• Provides both static and dynamic braking functions; no couterbalance valve required
• Sprag clutch will not permit load to be lowered unless brake is hydraulically released
• Increased winch efficiency

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