Tigercat 920 Forestry Dozer

[MikePhua]

Introduction
The Tigercat 920 Forestry Dozer, branded under the TCi label, is a purpose-built machine designed to meet the demanding needs of forestry operations. Manufactured by Tigercat Industries, a Canadian company renowned for its specialized forestry equipment, the 920 combines power, durability, and operator comfort to excel in tasks such as stump removal, road building, and land clearing.

Key Specifications

• Engine: Tier 4f Tigercat FPT N45 engine delivering 101 kW (135 hp) at 2,200 rpm (net), with a maximum output of 125 kW (168 hp).
  
• Weight: Approximately 16,330 kg (36,000 lb).
  
• Dimensions:
  • Length: 4,930 mm (16 ft 2 in).
    
  • Width: 3,175 mm (10 ft 5 in).
    
  • Height: 3,125 mm (10 ft 3 in).
    
  • Ground Clearance: 395 mm (15.5 in).
    
  • Ground Pressure: 49 kPa (7.1 psi).
    
• Hydraulic System:
  • Drive Pumps: Two piston pumps in a closed loop system.
    
  • Main Pump: One piston pump for all machine functions.
    
  • Filtration: Spin-on, 7-micron full flow and water-absorbing filters.
    
  • Reservoir Capacity: 100 L (26 US gal).
    
• Undercarriage:
  • Track Frames: Heavy-duty forestry, oscillating.
    
  • Track Gauge: 2,010 mm (79 in).
    
  • Track Chain: Heavy-duty 190 mm (7.5 in) pitch, SALT.
    
  • Final Drive: Two axial piston motors with infinitely variable speed.
    
  • Tractive Effort: 214 kN (48,300 lbf).
    
• Winch (Optional):
  • Type: Carco H40R with reel in and out, manual free spool, drawbar, and four roller fairlead.
    
  • Line Pull (Bare Drum): 18,000 kg (40,000 lb).
    
  • Line Speed (Bare Drum): 57 ft/min.
    

Design and Features
The TCi 920 is engineered with several design elements tailored for forestry applications:

• Heavy-Duty Undercarriage: The 190 mm (7.5 in) pitch track chain and oscillating track frames provide stability and durability on rough terrains.
  
• Responsive Hydraulic System: The closed-loop hydraulic system ensures efficient power transfer and precise control, essential for tasks like stump removal and grading.
  
• Operator Comfort: The forestry-specific cab offers excellent visibility, a heated and cooled air ride seat, ergonomic armrest-mounted joysticks, and a large touchscreen machine control system interface.
  
• Maintenance Accessibility: Large swing-out doors provide easy access to routine maintenance items, and the tilting cab allows for service of less frequently accessed components like hydraulic pumps.
  

Performance in the Field
The Tigercat 920 has demonstrated its capabilities in various forestry operations:

• Stump Removal: The powerful engine and hydraulic system enable efficient stump extraction, reducing downtime and increasing productivity.
  
• Road Building: The dozer's stability and blade design facilitate the construction of durable forest roads, essential for log transportation.
  
• Land Clearing: The machine's versatility allows for effective clearing of land for new growth or development projects.
  

Conclusion
The Tigercat 920 Forestry Dozer stands out as a robust and efficient machine tailored for the challenges of forestry operations. Its combination of power, durability, and operator comfort makes it a valuable asset for tasks ranging from stump removal to road building. As forestry operations continue to evolve, the TCi 920 exemplifies Tigercat Industries' commitment to providing specialized equipment that meets the industry's demanding needs.