HFW221 Felling Head Caterpillar


Specifications

Usage:

HFW221 HW3


Illustration 1g02719778

Table 1
Model  HFW221 
Height (A)  3022.6 mm (9 ft 11 in) 
Throat Clearance (B)  1244.6 mm (4 ft 1 in) 
Width (C)  1615.4 mm (5 ft 3.6 in) 
Depth (D)  1778 mm (5 ft 10 in) 
Weight(1)  2971 kg (6550 lb) 
Speed of the Disc (Single Speed Disc)  1200 RPM 
Flow of the Saw Motor  106 L/min (28 US gpm) 
Pressure of the Saw Motor  27579 kPa (4000 psi) 
Flow Rate of the Arm Cylinder  159 L/min (42 US gpm) 
Pressure of the Arms  26.9 MPa (3900 psi) 
Number of Disc Saw Teeth  16 
(1) no tilt or mount assembly

Table 2
Grapple and Accumulator Arm Cylinders 
Quantity 
Weight  33.6 kg (74 lb) 
Type  Double Acting 
Cushion  Head Ends 
Bore  88.9 mm (3.5 inch) 
Stroke  187.1 mm (7.4 inch) 
Closed Length  765.6 mm (30.1 inch) 
Rod Diameter  50.8 mm (2 inch) 
Maximum Operating Pressure  26890 kPa (3900 psi) 

Table 3
Motor 
Function  Rotation of the Cutting Disc 
Rotation  Clockwise 
Type  Variable Displacement Piston Motor 
Minimum Displacement  118 cc (7.2 in3) 
Maximum Displacement  160 cc (9.8 in3) 
Maximum Operating Pressure  34500 kPa (5000 psi) 

Caterpillar Information System:

Improved Axle Shaft is Now Used on Certain 826K Landfill Compactors {3278} Improved Axle Shaft is Now Used on Certain 826K Landfill Compactors {3278}
New Lamp Group Flood Lights Are Now Used on Certain L Series and M Series Medium Wheel Loaders {1429, 1430, 1434} New Lamp Group Flood Lights Are Now Used on Certain L Series and M Series Medium Wheel Loaders {1429, 1430, 1434}
New Air To Air After Cooler (ATAAC) Core Mount Is Now Used on Certain 815K Soil Compactors and 816K Landfill Compactors {1063} New Air To Air After Cooler (ATAAC) Core Mount Is Now Used on Certain 815K Soil Compactors and 816K Landfill Compactors {1063}
New Turbo Outlet Hose Is Now Used on Certain 815K Soil Compactors and 816K Landfill Compactors {1071} New Turbo Outlet Hose Is Now Used on Certain 815K Soil Compactors and 816K Landfill Compactors {1071}
Inspection of the Rear of the Engine on Certain C4.4 Machine Engines {1201} Inspection of the Rear of the Engine on Certain C4.4 Machine Engines {1201}
HFW221 Felling Head Maintenance Interval Schedule
CX38 CL6 Top Hat Rework Conversion of Assemblies 367-9371 to 490-8824 {3030, 3160} CX38 CL6 Top Hat Rework Conversion of Assemblies 367-9371 to 490-8824 {3030, 3160}
Interference Between Cable Assembly and Hydraulic Fan Case Drain Hose Assembly May Occur on Certain 793D Off-Highway Trucks {1408, 5057} Interference Between Cable Assembly and Hydraulic Fan Case Drain Hose Assembly May Occur on Certain 793D Off-Highway Trucks {1408, 5057}
794 AC Off-Highway Truck Field Assembly Platform - Install - Superstructure
B1, B2, B4, B6 and B8 Hydraulic Hammers Head Nuts - Tighten
New Collar and Longer Screw Hardware Improvement is Now Available for RS400 Rotation Sensor on Certain Motor Graders {1408} New Collar and Longer Screw Hardware Improvement is Now Available for RS400 Rotation Sensor on Certain Motor Graders {1408}
A Rework Procedure Is Now Available for Providing More Lubrication to the Transmission Clutch Number Three on Certain 700 Series Articulated Trucks {3030, 3160} A Rework Procedure Is Now Available for Providing More Lubrication to the Transmission Clutch Number Three on Certain 700 Series Articulated Trucks {3030, 3160}
Procedure to Replace Drive Assembly of Starter Motor On All Cat® Products {1453} Procedure to Replace Drive Assembly of Starter Motor On All Cat® Products {1453}
High-Pressure Fuel Pump Adapter and Front Gear Inspection for Certain C175–16 and C175–20 Engines {1242, 125H} High-Pressure Fuel Pump Adapter and Front Gear Inspection for Certain C175–16 and C175–20 Engines {1242, 125H}
Transmission Clutch Failure May Occur on Certain 793F Off-Highway Trucks {3030, 3160} Transmission Clutch Failure May Occur on Certain 793F Off-Highway Trucks {3030, 3160}
New Pre-Cleaner Hose Is Now Used on Certain 24 Motor Graders {7320} New Pre-Cleaner Hose Is Now Used on Certain 24 Motor Graders {7320}
Lock Plate in Transmission Planetary Group is Failing on Certain Large Off-Highway Trucks {3030, 3160} Lock Plate in Transmission Planetary Group is Failing on Certain Large Off-Highway Trucks {3030, 3160}
Transmission Clutch Seals May Fail on Certain 793F Off-Highway Trucks {3030, 3160} Transmission Clutch Seals May Fail on Certain 793F Off-Highway Trucks {3030, 3160}
Transmission Planet Gear Failure May Occur on Certain 797, 797B, and 797F Off-Highway Trucks {3030, 3160} Transmission Planet Gear Failure May Occur on Certain 797, 797B, and 797F Off-Highway Trucks {3030, 3160}
New Software Version Is Now Available for Cat® Terrain Office {7605, 7620} New Software Version Is Now Available for Cat® Terrain Office {7605, 7620}
Insufficient Bolt Clamp Load For The Scavenge Pump Used On Certain C175 Off-Highway Truck Engines {1312} Insufficient Bolt Clamp Load For The Scavenge Pump Used On Certain C175 Off-Highway Truck Engines {1312}
A New Strainer Group Has Been Added to Certain Vibratory Soil Compactors {4304} A New Strainer Group Has Been Added to Certain Vibratory Soil Compactors {4304}
A New Fuel Priming Pump Switch and Guard are Now Used on Certain 3512C and 3516C Machine Engines {1261, 1408, 7332} A New Fuel Priming Pump Switch and Guard are Now Used on Certain 3512C and 3516C Machine Engines {1261, 1408, 7332}
Improved Head to Block Joint on Certain C175 Reman Engines {1000} Improved Head to Block Joint on Certain C175 Reman Engines {1000}
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