Hydraulic Cutter Gearbox 1.93 Speed Up Ratio 15 Tapered Spline RC-51H 251390

Hydraulic Brush Cutter Gearbox – Premium Replacement for Skid Steer Rotary Cutters

High-performance aftermarket hydraulic brush cutter gearbox engineered for reliable operation in skid steer rotary cutter applications. Features a 1:1.93 speed-up gear ratio with precision-manufactured components for drop-in compatibility and extended service life.

Technical Specifications

• OE Part Numbers: Fits RC-51H, 251390, RC51H
• Condition: New, aftermarket replacement
• Gear Ratio: 1:1.93 (Speed-Up)
• Hydraulic Motor Input: 1-1/4" – 14 spline internal
• Output Shaft: 2" – 15 tapered spline
• Mounting Pattern: 4-bolt mount, 4-3/4" bolt circle on center
• Quality: Engineered to meet or exceed OEM performance standards

Key Features

The RC-51H gearbox is designed for use with skid steer rotary cutters, delivering durability and performance through a 1:1.93 speed-up gear ratio. It features a hydraulic motor mount with internal and output splines built to industry standards. This replacement unit delivers:

• Heavy-duty construction – Built for demanding rotary cutter applications
• High-speed bearing units – Designed for extended operation
• Heat-treated components – Gears and shafts engineered for long service life
• Complete assembly – Includes blade carrier mounting nut and cotter pin
• Cost-effective solution – Premium aftermarket quality at a fraction of OEM pricing

Package Contents

• 1 × Hydraulic Brush Cutter Gearbox (RC-51H / 251390)
• 1 × Blade Carrier Mounting Nut
• 1 × Cotter Pin

Important: Gearboxes ship dry and require 80W-90 gear oil or equivalent before use.

Essential for rotary cutter maintenance, equipment repair, and preventive service. Keep your skid steer brush cutter operating reliably in the field.