The four-roller design can be used for single tree harvesting and processing, or multi-stem processing applications. It features an automatic dual stem and end alignment which permits fast processing and minimal waste. A new innovation is the dual diameter and length measuring system which greatly improves measuring accuracy. A new high-flow hydraulic valve allows faster feeding and improved saw performance. The on-demand synchronized four-wheel drive feed rollers provide proportional control for increased traction on the stem. It uses a standard auto-tension three-quarter inch pitch main saw with a 65 cm (26 in) cutting capacity. This new C series head now also has 360 degree continuous rotation for improved log handling and reduced carrier-to-head hose failures. The new head will initially only be available in North America, but will soon be distributed to other markets. Key specifications are included in the table below. Source: http://waratah.net/hth622c.html
Maximum feed-roller opening |
73 cm (29 in) |
Weight (excluding links and some options) |
2736 kg (6,032 lb) |
Butt saw |
Saw type: Waratah 3/4 Maximum cutting diameter: 65 cm (26 in) Bar and chain type: 89 cm (35 in) |
Top saw |
Saw type: 0.404 Maximum cutting diameter: 40 cm (16 in) Bar and chain type: 59 cm (23 in) Lubrication: Bar oil from tank |
Feed system |
4 feed rollers with on-demand hydraulic synchro-drive Feed motors (drive arm motor/fixed drive motor): 702 cc/400 cc Feed speed maximum flow: 6.5 m/s @ 360 l/min (21.3 ft/sec @ 95 gpm) |
Delimbing |
Top knives: 1 fixed, 2 moving Maximum delimb opening: 64 cm (25 in) |
Control and Measuring System Options |
TimberRite |
Carrier Size Range |
24–33 tonne |
Carrier hydraulic requirements |
Maximum pressure: 35 MPa (5,076 psi) Useable pressure: 32 MPa (4,641 psi) Maximum flow: 320 to 360 l/min (85 to 95 US gal/min) Optimum flow @ pressure: 360 l/min @ 15 MPa (95 gpm @ 2,175 psi) |