Is the Stumper Grinder a Practical Attachment for Skid Steers

[MikePhua]

The Stumper Grinder is a compact, skid steer-mounted stump grinding attachment designed for forestry, orchard clearing, and post-storm cleanup. While it offers simplicity and ruggedness, its performance and versatility fall short compared to dedicated stump grinders, especially in residential or high-volume commercial applications.
Stumper Industries Background and Product Line
Stumper Industries is a niche manufacturer specializing in hydraulic stump grinding attachments for skid steers, compact tractors, and excavators. Their grinders are built around a low-speed, high-torque design that minimizes flying debris and maximizes torque delivery. The company markets its products as durable, low-maintenance alternatives to traditional belt-driven or high-RPM grinders.
The flagship model, often referred to simply as the “Stumper,” is compatible with standard skid steer quick-attach plates and requires a minimum hydraulic flow of 20–30 GPM. It uses a direct-drive motor and carbide teeth mounted on a rotating drum.
Terminology Note

• High-Flow Hydraulics: A hydraulic system capable of delivering more than 30 gallons per minute, essential for powering demanding attachments.
  
• Dedicated Grinder: A purpose-built stump grinding machine with its own engine and chassis, optimized for maneuverability and speed.
  
• Carbide Teeth: Hardened cutting elements used to shred wood and roots.
  
• Quick-Attach Plate: A standardized mounting interface for skid steer attachments.
  
• Remote-Controlled Grinder: A self-propelled unit operated via handheld remote, often used in tight residential spaces.
  

Performance and Use Case Analysis

• Strengths:
  • Rugged build suitable for orchard clearing and forested areas.
    
  • Low-speed operation reduces chip throw and improves safety.
    
  • Compatible with large-frame skid steers and compact track loaders.
    
  • Minimal maintenance compared to belt-driven systems.
    
• Limitations:
  

• Too large for residential yards or gated access (typically over 36 inches wide).
  
• Slower than dedicated grinders, especially on hardwood stumps.
  
• Visibility and precision are limited due to skid steer cab positioning.
  
• Chip dispersion can be problematic—often thrown back toward the cab.
  

Operators with high-flow machines may find the Stumper useful for occasional clearing jobs, but those in the stump grinding business often prefer dedicated units like Carlton or Rayco machines. These offer better maneuverability, faster grinding cycles, and remote operation.
Field Experience and Alternatives

• One contractor used a Stumper during post-hurricane cleanup, grinding nearly 300 stumps in a pecan orchard. While effective, the unit sat idle afterward due to limited versatility.
  
• Another operator switched from a low-flow skid steer grinder to a remote-controlled diesel unit, citing improved visibility, speed, and reduced fatigue.
  
• The Miller Pro (now sold by Diamond Mowers) was repeatedly praised for its performance on large-frame, high-flow machines. It remains a top choice for skid steer-mounted grinding.
  

Recommendations for Buyers

• Use the Stumper only if you already own a compatible high-flow skid steer and plan to grind stumps in open, rural areas.
  
• Avoid it for residential work or gated properties—dedicated grinders are better suited.
  
• Consider renting before buying, especially if stump grinding is not a core part of your business.
  
• If purchasing, ensure your machine has adequate cooling and hydraulic capacity to avoid overheating.
  

Conclusion
The Stumper Grinder fills a niche for rugged, low-maintenance stump removal in forestry and agricultural settings. However, its limitations in speed, size, and precision make it a poor fit for professional stump grinding operations or residential work. For contractors seeking versatility and productivity, dedicated grinders or high-performance attachments like the Miller Pro offer better long-term value.