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TECHNICAL DATA
1153136-95 Rev.2 2010-04-08
Technical data
Recommended original and replacement bar and chain combinations
Following is a list of recommended cutting equipment for the Husqvarna chain saw models 445, 445e, 450 and 450e.
The combinations of power head, bar and chain have been tested and found to be in accordance with the kickback and
vibration requirements of ANSI B175.1–2000.
The guide bar nose radius is determined by either the maximum number of teeth in the nose sprocket or the
corresponding maximum nose radius of a solid bar.
The following list is the chain saw manufacturers recommendations. There may be other combinations available, which
will also achieve kickback reduction.
As we are listing the maximum guide bar nose radius, you may use a guide bar with smaller nose radius than in our list.
For guide bars of the same length, all sprocket-nose guide bars of the same pitch and having the same number of
sprocket teeth may be considered to have equivalent kickback energy. A hard nose bar having the same length and nose
radius as a sprocket-nose bar may be considered to have equivalent or less kickback energy than the sprocket-nose bar.
445 445e 450e 450
Motor
Cylinder displacement, cu.in/cm
3
2,79/45,7 2,79/45,7 3,06/50,2 3,06/50,2
Cylinder bore, inch/mm 1,65/42 1,65/42 1,73/44 1,73/44
Stroke, inch/mm 1,30/33 1,30/33 1,30/33 1,30/33
Idle speed, rpm 2700 2700 2700 2700
Power, kW/hp @ rpm 2,1 / 2,8 @ 9000 2,1 / 2,8 @ 9000 2,4/3,2 @ 9000 2,4/3,2 @ 9000
Ignition system
Spark plug NGK BPMR 7A/
Champion RCJ 7Y
NGK BPMR 7A/
Champion RCJ 7Y
NGK BPMR 7A/
Champion RCJ 7Y
NGK BPMR 7A/
Champion RCJ 7Y
Electrode gap, inch/mm 0,02/0,5 0,02/0,5 0,02/0,5 0,02/0,5
Fuel and lubrication system
Fuel tank capacity, US pint/litre 0,99/0,47 0,99/0,47 0,99/0,47 0,99/0,47
Oil pump capacity at 9,000 rpm, ml/min 13 13 13 13
Oil tank capacity, US pint/litre 0,55/0,26 0,55/0,26 0,55/0,26 0,55/0,26
Type of oil pump Not adjustable Not adjustable Not adjustable Not adjustable
Weight
Chain saw without bar or chain, empty
tanks, lb/kg
10,8/4,9 11,2/5,1 11,2/5,1 10,8/4,9
Chain/bar
Standard bar length, inch/cm 15”/38 15”/38 15”/38 15”/38
Recommended bar lengths, inch/cm 13-20/33-50 13-20/33-50 13-20/33-50 13-20/33-50
Usable cutting length, inches/cm 12-19/31-49 12-19/31-49 12-19/31-49 12-19/31-49
Pitch, inch/mm 0,325/8,25 0,325/8,25 0,325/8,25 0,325/8,25
Thickness of drive links, inch/mm 0,050/1,3 0,050/1,3 0,050/1,3 0,050/1,3
0,058/1,5 0,058/1,5 0,058/1,5 0,058/1,5
Drive sprocket type/teeth Spur/7 Spur/7 Spur/7 Spur/7
Chain speed at max. power, m/sec 17,3 17,3 17,3 17,3