H480C. Update: Design Goals

08/30/2023
Waratah
H480C 2009 Update: Design Goals
Feeding performance optimization
Upper feed rollers design rationalization
Feeding geometry optimization (small / big trees)
Optimization of lower feed motor lifetime
Feeding path optimization
Durability improvements
Manufacturability improvements
New options
Other automations (mounting)
Productivity, Oper. Costs
Uptime
Productivity
Uptime
Productivity
Uptime
Uptime
All

08/30/2023
Waratah
Comparison 758HD/H480/H480C
X=satisfactory
XX= good
XXX= excellent

08/30/2023
Waratah
Feeding Performance: Speed Ratio
Improve current speed ratio between upper and lower rollers
Bigger M14 fastening bolts for upper motors
? reduce upper roller diameter
Affects to motor & roller location
Change gear to outer diameter to
Reduce loads
Reduce weight
Improves manufacturing
H480C feeding power will be improved
? Update will get new roller arms
(to improve small tree feeding and
big tree holding)
and new feed rollers (better grip)

08/30/2023
Waratah
Feeding Performance: Tree holding
Improve small tree feeding & big tree holding
? New Roller arms for Danfoss & Poclain motors
Current H480 (D500)
The New H480C (D500)

08/30/2023
Waratah
Feeding Performance: Roller Arms
New stronger & re-designed Danfoss feed roller arms
Material change 70 mm ? 80 mm
Improved small tree feeding & big tree holding
New re-designed Poclain roller arms
Improved small tree feeding & big tree holding
Slightly modified design
NOTE! For old (=H480 Poclain & Danfoss + 758HD Poclain) heads new roller arms can be sold as an pair only

08/30/2023
Waratah
Currently 14mm spikes used on majority of feed rollers.
Going to bigger spike (20mm) on lower feed rollers will guarantee better grip and durability.
Less feeding damages due to better grip and spike design.
Feeding Performance: Lower Roller Spikes

08/30/2023
Waratah
Currently 14mm spikes/10*10 ribs used on majority of feed rollers.
Going to bigger spike (20mm) on lower feed rollers will guarantee better grip and durability. Ribs made of 12*12
Less feeding damages due to better grip and spike design.
Feeding Performance: Lower Roller V-type

08/30/2023
Waratah
Feed motor durability
Lower motors:
5 bar back pressure to tank line (check valve)
Check valves to lower feed motor drain line to protect motors
New option: Poclain 630/Danfoss400.
Danfoss TMVW/TMTW HD feeding motors.
Right feeding ratio between upper and lower motors gives less stress. to hydraulics

08/30/2023
Waratah
Feeding path optimization
Tree conicality is 1-1.5cm / 1 m ?Optimize cuts
Fixed top knife / upper feed rollers
Tree travel path needs to be optimized for delimbing
Note that big tree drops some amount (1 cm?) off from top knife
? Has been done by upper motor/roller position

08/30/2023
Waratah
Sawing performance
Change for Saw bar feeding hydraulic coupling improves sawing performance
New EVO II valve block
New hose routing
Check valves to saw motor drain line to protect motors
Parker saw motor durability
Drive wheel change 12 ? 13 teeth
New compensator (F-code)
New saw motor, Bucher 20 cc
Alternative for Parker
Requires new saw valve manifold (EVO II)
Available also as an field kit (for some models)

08/30/2023
Waratah
H480C Saw device
Alternative saw motors
Bucher 20 cc
-stands high revs
-10500 RPM
-not sensitive for cavitation
Parker 19 cc
9000PRM
Good hydraulic efficiency

08/30/2023
Waratah
Tilt frame and tilt end damping
New tilt brackets to mainframe (compare H414)
Lifting up tilt causes heavy impacts to structures
Current tilt cylinder F634639 has 20mm end damping
Because of mechanical structures, not all damping length is used
? Inefficient damping performance
? Improve tilt up end damping:
Rubber dampeners (2 pcs) together with cylinder damping

08/30/2023
Waratah
Fixed top knife (ECR021746)
Currently 5 different versions on price list + some test versions designed
Good features connected to standard fixed knife ”contorta moustache knife”

08/30/2023
Waratah
Saw box fastening & rear frame
Better support to tilt stopper
(Some changes done already summer -08)
’J’- plate manufacturability improvement
Smooth rear portion
Simplify optional snow protection
’Flat’ saw box plate with ring (compare H414)

08/30/2023
Waratah
Rocker, Expander & Length measuring
Replacing
Pin assembly F635772 (high warranty)
Straight and boggie style rockers
By bolted ’service door / wear plate’

08/30/2023
Waratah
Cylinders
New roller arm cylinders F074420
Better welding between rod & eye
(Will fit only to H480C roller arms)
‘Face plate’ shaped to protect cylinder fittings (see picture below)
Welding improvement to front knife cylinder (F634640) since winter -09
Rod & eye connection

08/30/2023
Waratah
Misc
Hoses from boom to head without ‘hose swing’

08/30/2023
Waratah
New rear knife cylinder.
Rod diameter increased from 20 mm to 25 mm
Lenght of end cushion increased from 5 to 10 mm in both ends.
…WJH48000333
Rear knives lenghtened 30 mm
Slot

08/30/2023
Waratah
New front knives. WJH480H000519…
Standard, R90 radius
F646612
F646613
French version, R110 radius,
F646949
F646910
R90
Prosessor type tips
R110
Straight tips

08/30/2023
Waratah
Tilt frame
New tilt cover
brackets

08/30/2023
Waratah
Upper knife shields (option)
Right F640571
Left F641116
V00758

08/30/2023
Waratah
Feed Rollers
Upper Rollers
V-type rollers
Thumbnail spikes gives traction
Euca rollers
Down Rollers,
Thumbnail rollers
MTH V-type rollers
Mense feeding rollers, conical type
Moipu feeding rollers
Euca feeding rollers
20 dia,thumbnails v-type 12*12 bars

08/30/2023
Waratah
Better protection for SC saw unit

08/30/2023
Waratah
Measuring wheels H480/758HD
Big diameter:
Narrow pl 6 sharp tips F655667 1, 2 tai 3 pcs
(replaces F645981 )
Special F645983
H270 F633609
Euca F645982
Canada F648841 2 pcs
Notice: sharp tips

08/30/2023
Waratah
SuperCut 100
Chain tensioning pressure
Bigger flow

08/30/2023
Waratah
Saw valve
Saw manifold
40 bar pilot pressure
Control valve
Compensator valve
Better spring
Tilt pressure
Pilot pressure
EJH480 #568…
EJH270E000616…
EJH290X000034

08/30/2023
Waratah
Flow divider for rollers or knives (F064309)
Orifice 0,6 mm added