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MEGATRAK TM
What is MEGATRAKTM?
Fully independent suspension, providing
all-wheel steer and multiple axle drive capabilities
What cranes have MEGATRAKTM suspensions?
Grove GMK All Terrain Cranes
Current Production models:
Metric Designation USA Designation
2035 2035
3050 3050
4075 4090
5100 5120B
5180 5210
6200-1 6220
6300 6350
What Is
What Is MEGATRAK
MEGATRAKTM
TM ?
?
Maximum Ground Contact
• All axles remain in use at all times
• Weight is more evenly distributed
True Ground Clearance
• Raising the suspension increases
ground clearance, providing real “All
Terrain” Capabilities
Cardan Shaft
(Also Called: Half Shaft / Prop Shaft)
• In the event of a Cardan Shaft
failure, it may be removed and the crane
can travel under its own power for
repairs (Conventional axle would have
to be replaced prior to movement)
MEGATRAKTM
MEGATRAK TM Benefits
Benefits
Drive Line Remains Aligned
•Angles do not change: Less wear &
maintenance
Steering Errors Eliminated
•Less Tire Wear
•Steering Linkage Is Positioned Higher
To Reduce Possibility Of Damage
Design Allows for Deeper Frame
•Provides Stronger Lifting Platform
Suspension Controlled Fully
From The Carrier Cab
•Operator controls system
MEGATRAKTM
MEGATRAK TM Benefits
Benefits
Drive
Drive Non-Drive
Non-Drive
Parts Commonality
•Common Megastruts From 2-axle to 6-axle units
(Prior to Grove acquisition: Smaller Strut Up To 4-Axle, Larger Strut 5+ Axles)
•Common Cardan Shafts: All Models (Also called: Half Shaft, Prop Shaft)
•Cardan Shaft designed as weakest point to prevent drive box damage
MEGATRAKTM
MEGATRAK TM Benefits
Benefits
Megastrut Is Bolted To Frame
(Top and Bottom)
300 mm
(11.81 inches)
Travel
MEGATRAKTM
TM Benefits
•Due to the geometry of the suspension, the cylinder moves
vertically with no lateral movement between wheel hubs
•Suspension does NOT effect steering geometry which stays aligned
MEGATRAKTM
SUSPENSION
CARRIER
FRAME
MEGASTRUT
SUSPENSION
CYLINDER CHANGE-OVER
LEVER
WISH- STEERING
BONE LEVER
STUB
AXLE CARDAN AXLE DRIVE
SHAFT BOX
(Half Shaft / Prop Shaft)
MEGATRAKTM Begin animation
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
MEGATRAKTM
SUSPENSION
OFF-ROAD
VERSATILITY
OFF-ROAD
VERSATILITY
OFF-ROAD
VERSATILITY
OFF-ROAD
VERSATILITY
OFF-ROAD
VERSATILITY
OFF-ROAD
VERSATILITY
MEGATRAKTM
SUSPENSION
SUSPENSION
CYLINDER
AXLE
DRIVE
STUB
AXLE
WISH-
BONE
Begin animation
Carrier Cab-mounted
Suspension Controls •Automatic ride height controls
GMK5180 / 5210 •Side to Side Control
•Front & Back Control
•All controlled from the carrier cab
MEGATRAKTM
MEGATRAK TM Controls
Controls
MEGASTRUT
Rod side Piston side
Oil (Lower) Oil (Raise)
Sight
Gauge
Travel Height
Outer Cylinder Proximity
Switch
Main Hydraulic Piston
Inner Hydraulic Cylinder
Protective Cylinder
Attached to Inner
Cylinder
Inner Cylinder & Protective
Cylinder Attached
MEGASTRUT
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
Raise All Auto Ride
Lamp Raise Height Lamp
Raise I Travel Height
Lower I
Raised
Lower All Auto Ride
Lamp Lower Height
MEGASTRUT
Arming System
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
Raise All Auto Ride
Lamp Raise Height Lamp
Raise I Travel Height
Turn to right
and push in
Lower I
Raised
Lower All Auto Ride
Lamp Lower Height
MEGASTRUT
Arming System
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
Then turn to the,
left, now the key
I is locked Raised
MEGASTRUT
Begin animation
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Raising
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Fully Raised
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Lowering
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
MEGASTRUT
Auto Ride Height
Level Adj.
Right
Level Adj.
Front
Level Adj.
Rear
Level Adj.
Left
Lowered
I Travel Height
I
Raised
Conventional
Suspension Suspension
Lowered
Clearance Height
Suspension
Raised Travelling
Same Clearance Height over uneven
ground
• Rigid axle does not raise with suspension:
NO increase in ground clearance!
• Floating Hydraulic Cylinders
• Driveline stress due to constantly moving
steering geometry
Conventional Rigid Axles:
Each side is effected by what is happening to the other side
Result: Limited side-to-side axle oscillation
MEGATRAKTM Independent Suspension:
Each wheel compensates independently to the terrain
Benefit: Increased side-to-side wheel oscillation
resulting in improved ground contact
Conventional
Axles
Driveline constantly
changes angles as
the
axles follow the
terrain
Result: Increased
wear, higher
maintenance
(Drivelines in
Green)
Conventional Axles
Conventional Axles
MEGATRAKT
M
Driveline remains
in line, does not
change angle
with
the terrain
Benefit:
Less wear, longer
life
(Drivelines in
Green)
MEGATRAKTM
MEGATRAK TM Benefits
Benefits
TM Benefit
MEGATRAKTM
ALL Tires Contact Uneven Ground
To suspension doc
Thank You!
