Swingblade Sawmill

Design Rationale

Past work on band sawmill is here.

Present work (note: present development involves powering the swingblade with a detachable power take-off hydraulic motor from LifeTrac):

Hydraulic-Powered Mill

Interestingly, with LifeTrac, we can power a hydraulically-driven variant of this device. This will eliminate the engine and 90 degree gear requirements, thereby simplifying the machine greatly. The detachable, hydraulic PTO motor from LifeTrac will be the power source. We know of no other swingblades driven by hydraulics - let us know if you know of any.

This hydraulic variant eliminates engine cost and 90 degree gear cost - reducing prototype cost respectively.

Available Power

Hydraulic power is defined as Flow x Pressure. The hydraulic power supplied by a pump: P in [bar] and Q in [lit/min] => (P x Q) / 600 [kW]. Ex. Pump delivers 180 [lit/min] and the P equals 250 [bar] => Pump power output = (180 x 250) / 600 = 75 [kW]. 75000W / 745.7 = 100.58hp

LifeTrac has 93 l/min available from the auxiliary hydraulics, and 250 bar - 112x250/600/.746 = about 52 hp.

Parts

• Lucas blades, $185

Companies

• http://www.brandxsawmills.com/basicmillpackage.htm - $15.4k

Videos

• Peterson - 13-30 hp, 4-8-10" blades - [1]

Economics

Running costs of an 8" blade sawmill per day, from [2]: