A trench filler attachment allows a mini skid steer to backfill narrow or wide trenches quickly and efficiently. It uses a series of rotating paddles or augers to move soil from the sides into the trench, replacing manual labor and speeding up the restoration process on utility, landscaping, and irrigation jobs.
2. Applications
Utility trench backfilling (electric, fiber, gas, or water lines)
Irrigation line trench fill-in
Landscape edging trenches
Shallow drainage or footing trench restoration
Pipe bedding and light compaction (with optional compaction bar)
3. Compatibility
3.1 Mounting Interface
Mount Type
Compatible Mini Skid Steer Brands
Mini Universal Plate
Toro Dingo, Ditch Witch, Vermeer, Boxer, Ramrod, Kanga, and similar
Bobcat MT Interface
Most Bobcat mini skid models (check for proprietary plate fit)
Always confirm your loader’s mount dimensions and compatibility with the attachment.
3.2 Hydraulic Requirements
Parameter
Typical Range
Flow Rate
8 – 15 GPM
Operating Pressure
1,500 – 3,000 PSI
Coupler Size/Type
⅜″ or ½″ Flat Face ISO
Case Drain
Not typically required
4. Key Components
Component
Function
Twin Rotating Paddles
Scoop and move material inward from both sides of trench
Skid Frame
Supports paddles and holds the fill depth consistent
Hydraulic Motor
Drives paddle rotation from the machine’s auxiliary hydraulic system
Center Scoop/Filler Plate
Pushes material down and levels surface after fill-in
Adjustable Side Shields
Contain soil and adjust for varying trench widths
5. Technical Specifications (Typical Range)
Attribute
Typical Values
Fill Width
8″ – 24″
Paddle Diameter
10″ – 16″
Overall Width
36″ – 48″
Weight
250 – 400 lbs
Hydraulic Flow
8 – 15 GPM
Pressure Range
1,500 – 3,000 PSI
Side Shield Adjustment
Manual or pin-lock
6. Operation Guidelines
6.1 Setup
Mount attachment securely to mini skid steer’s quick attach plate.
Connect hydraulic lines—ensure correct direction and secure fittings.
Engage hydraulics briefly to test paddle rotation.
Adjust side shields for trench width, if applicable.
6.2 Use Procedure
Align center of filler with the trench.
Drive forward slowly (~1–3 MPH).
Allow paddles to pull material inward; do not overload the paddles.
Keep bystanders and crew members at a safe distance
Do not stand between the loader and trench filler during operation
Avoid sudden movements or high-speed operation
Shut off engine and release hydraulic pressure before inspecting or servicing
8. Maintenance Schedule
Task
Frequency
Inspect paddles for cracks/wear
Daily
Check for hydraulic leaks
Daily
Grease paddle shaft bearings
Every 10 hours
Clean debris from shield areas
After each use
Tighten hardware and bolts
Weekly
9. Selection Tips
Match hydraulic flow and pressure to your mini skid steer specs Choose adjustable side shields for flexibility on trench width Select steel paddles for heavy-duty soil; rubber paddles for turf-sensitive work For rocky soil, ensure the model has reinforced paddle arms and sealed bearings Consider compact models (<48″ wide) for tight site access
Always confirm your loader’s mount dimensions and compatibility with the attachment.