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8/20/2019 Disk Mower
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HTD7, HTD8, HTD9
Disc Mowers
Product Information Guide
8/20/2019 Disk Mower
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TABLE OF CONTENTS
HTD7, HTD8, HTD9 DISC MOWERS
FEATURES AND BENEFITS
General ...............................................................................................................1
Cutterbed............................................................................................................3
Mainframe...........................................................................................................6
Optional Kits (Field Installed)............................................................................11
SPECIFICATIONS
Specifications – HTD7......................................................................................13
Specifications – HTD8......................................................................................14
Specifications – HTD9......................................................................................15
COMPETITIVE COMPARISONS
Competitive Comparisons – HTD7...................................................................16
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
GENERAL
HTD7
The HTD7 is a 5 disc, 6’ 8” (2.0 m) cutting widthmower. A tractor with a minimum of 35 hp (26kW) is required to operate the mower. Thetractor needs to be equipped with an enclosedcab, to protect the operator. The mowerattaches to the tractor with a Category I or IIthree-point hitch, and requires a single actingremote valve, for lifting the mower into transportposition.
C2010
HTD8
The HTD8 is a 6 disc, 7’ 10” (2.38 m) cuttingwidth mower. A tractor with a minimum of 40 hp(30 kW) is required to operate the mower. Thetractor needs to be equipped with an enclosedcab, to protect the operator. The mowerattaches to the tractor with a Category II three-point hitch, and requires a single acting remote
valve, for lifting the mower into transportposition.
C2020
HTD9
The HTD9 is a 7 disc, 9’ 2” (2.79 m) cuttingwidth mower. A tractor with a minimum of 45 hp(34 kW) is required to operate the mower. Thetractor needs to be equipped with an enclosed
cab, to protect the operator. The mowerattaches to the tractor with a Category II three-point hitch, and requires a single acting remotevalve, for lifting the mower into transportposition.
C2030
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
MAJOR COMPETITORS
Challenger ..............................................HTD7
Bush Hog.............................................HM2007JF ........................................................SB 2000Kuhn .................................................. GMD 500Krone.................................................AM 203 SNew Holland ................................................615
Challenger ..............................................HTD8Bush Hog.............................................HM2008Claas .................................................Disco 260 C2031John Deere..................................................265JF ........................................................SB 2400
Krone.................................................AM 243 SKuhn .............................................GMD 600 GIIM & W................................................... HC 687New Holland ................................................616Vermeer...........................................6030 GatorVicon...................................................CM 2400
Challenger ..............................................HTD9
Bush Hog.............................................HM2009Claas .................................................Disco 300John Deere..................................................275
JF .........................................................SB2800Krone.................................................AM 283 SKuhn .............................................GMD 700 GIINew Holland ................................................617Vermeer...........................................7030 Gator C2032
Vicon.................................................DMP 2800
C2034C2033
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
CUTTERBED
Easy Cutterbed access
Lifting the front curtain easily accesses themower cutterbed. Changing knives and periodicmaintenance can be quickly performed. Thecurtain can then just as easily be returned to theworking position.
C2040
Modular Bed Design
The cutterbed is designed so that if one cuttingmodule is damaged internally, it will notcontaminate the other modules. The modularbed design allows for replacement of the modulerather than disassembling the entire cutterbed,for ease of maintenance and service.
C2050 Segmented Drive Shaft
The segmented shaft allows the cutterbedmodules to be taken apart easily, withoutremoving a long driveshaft, greatly reducingrepair time. The shaft is a small diameter, tokeep the bed profile low. A low bed profile helps
keep the bed level when cutting, which reduces“scalloped” cutting and streaking.The hex shaftis also designed to absorb the shock if anobstruction is encountered in the field. Thisreduces the chance of damage to the moreexpensive gears and bearings.
C2070
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Cutterbed drive
The modular cutterbar system consists of
individual modules and a segmented hex driveshaft. The segmented hex shaft and piniongears drive the cutterbed. The modularcutterbar drive requires less horsepower thancompetitive designs, so operators can utilizesmaller tractors efficiently.
C2060
C2061
Sealed Modules
Inside the sealed modules are cut steel beveldrive gears and sealed bearings. Thecutterbar’s reversible, hex driveshafts providelonger life and reduced operating cost. Eachcutterbar module consists of two main pieces,
the sealed gearbox housing, and the oval discthat retains the knives.
C2080
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Hillside Mowing
Because each drive unit is sealed with it’s own
supply of lubrication, the mower can operate atany angle (up to 90 degrees), for long periods oftime. The lubrication stays within each module,and doesn’t run to one end of the bed.
C2090
Knives
The standard knife has a 12 degree pitch. Fortough conditions such as down crop, an 18
degree knife is available. The 18 degree knivesgives more lift to help pick up the crop for a
cleaner cut. This optional 18 degree knife takesa little more horsepower to operate and is moresubject to damage in abusive conditions.
C2100
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
MAINFRAME
Hitch
All models use a heavy-duty, one-piece tubehitch design. The larger models, HTD8 andHTD9, use a wide beam design to accommodatelarger tractors and wider wheel spacings. TheHTD7 offers an optional offset hitch for the largertractors with wide wheel tread.
The HTD7 offers a Category 1 & 2 three-point
TO Shaft
All units are equipped with a 6-spline, 540-rpm
rive Belts
The cutterbar main drive gearbox is driven from
hitch to fit the smaller model tractors, as well asthe larger ones. The HTD8 and HTD9 are
designed for the larger model tractors, and offera category 2 three-point hitch.
C2120
P
PTO shaft with an overrunning clutch. Theoverrunning clutch is designed to preventdamage to the cutter bar, PTO shaft, and tractorPTO clutch when the machine is being shutdown. It allows the cutter bar to coast to a stop
when the PTO is turned off.
D
the PTO shaft by belts. The HTD7 has 3matched “HB” Section belts, the HTD8 has 4
matched “HB” Section belts, and the HTD9 hasa 4-groove power banded belt to drive themachine. The belts help to reduce the shockload to the gearbox. The belts can easily bemaintained without removing the belt guard.(Guard shown removed to view belts)
C2120
C2130
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Main Drive Gearbox
The heavy-duty main drive gearbox has two
separate oil reservoirs. Both are separate fromthe cutterbar modules. The gearbox contains90W gear oil. The lubrication used in thecutterbar is heavier EPO grease designed forlubricating the bevel gears in the cutterbarmodule.
C2140
Inner Flotation Spring
The inner flotation spring is standard on allmodels. It is set at the factory and is non-adjustable. It takes pressure off the inner skidshoe to increase wear life.
C2150
Outer Flotation Spring
Challenger ® offers an outer flotation spring asstandard equipment for the models HTD8 andHTD9. This reduces the wear on the outer skidshoe giving it a longer wear life. Outer flotation
springs are optional for the HTD7.
C2160
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Hydraulic Lift Cylinder
The hydraulic lift cylinder is standard on all
models and is used to raise and lower thecutterbar for transport and storage.
C2170
Transport Lock
The transport lock valve is used to hydraulicallylock the cutterbar in the raised position whentransporting, storing or working on the machine.It stops the cutterbar from lowering if hydraulicpressure is lost.
2180
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Cutterbar Breakaway
The cutterbar breakaway is designed to prevent
damage if the cutterbar hits an object. It givesthe operator time to stop before serious damageis done. The spring tension is adjustable and if itis tripped, the operator simply backs up to resetthe breakaway.
Home Position 2190
Breakaway Position 2200
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
Heavy Duty Curtain
All the HTD series disc mowers offer a heavy
curtain as well as a reinforced curtain frame.This curtain helps to contain material andreduces the possibility of objects being throwntoward the tractor.
C2210
2220
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FEATURES AND BENEFITSHTD SERIES DISC MOWERS
OPTIONAL KITS (FIELD INSTALLED)
Swathboard
The Swathboard guides the cut crop away fromthe uncut crop. This separates the cut anduncut crop, making it easier to mow.
Wholegoods Kit – BKD1015
Estimated Installation Time – 0.5 Hr.
C2230
Tall Crop Divider
The optional tall crop divider attaches to theouter end of the disc mower and is used toseparate tall material. The tall crop dividerprovides a clean division between the standingcrop and crop being cut. It improves the cuttingperformance in tall, tangled crops.
Wholegoods Kit – BKD1016
Estimated Installation Time – 0.5 Hr.C2240
2” Topping Skids (Set of Four)
The 2” (51 mm) high skid shoes providesadditional cutting height for longer stubble. Thehigh skid shoe is also recommended in rocky
conditions, to protect the cutterbar.
Wholegoods Kit – BKD1014
Estimated Installation Time – 1.0 Hr.
C2250
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FEATURES AND BENEFITS
HTD SERIES DISC MOWERS
Offset Hitch Bundle for HTD7
The offset hitch moves the mower (HTD7 only) over 12” (305 mm), to allow the use of larger
tires or wider wheel spacing. The offset hitch allows the operator to use the full width of thecutterbar, and prevent the rear wheel from running over the uncut crop.
Wholegoods Kit – BKD1017
Estimated Installation Time – 1.0 Hr.
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SPECIFICATIONS
HTD7 DISC MOWER
MODEL ..........................................................................................HTD7 - 6 ft 8 in Disc Mower
DIMENSIONS & WEIGHT
Weight lb (kg) ...................................................................................................... 1165 (528.8)
CUTTERBED
Cutting Width ft (m) .................................................................................................. 6.7 (2.03)Number of Discs.....................................................................................................................5Number of Knives..............................................................................................10 (2 per disc)Knife Lift, Standard Degrees ................................................................................................12Knife Lift, Optional Degrees .................................................................................................18Knife Circle Diameter IN (mm).................................................................................. 19.7(500)Recommended Cutting Angle Degrees ...........................................................................0 to 6Disc Speed rpm................................................................................................................3000
Tip Speed mph (km/hr).......................................................................................... 175.8 (289)Knives .................................................................................................Swingaway, ReversibleCutterbed Design ....................................................................................Horizontal Hex Shaft
Modular Gear ComponentsFlotation ...................................................................... Non-Adjustable Enclosed Float Spring
FRAME
Protection .......................................................................................Spring Loaded BreakawayHeat Treated Skid Shoes .......................................................................................................5Hydraulic Lift..............................................................................................................Standard
DRIVE SYSTEM
PTO Speed rpm .................................................................................................................540Drive Line .....................................................................................................Constant VelocityDrive Protection.........................................................................................Overrunning ClutchGearcase Drive ..................................................................................... 3V “HB” Section Belts
TRACTOR REQUIREMENTS
Recommended Horsepower hp (kW) ........................................................................... 35 (26)Tractor Type.................................................................................................. Equipped w/CabHitch............................................................................................. Category I or II Three PointHydraulics ................................................................................... Single Acting Remote ValveCutting Speed mph (km/hr) ................................................................................Up to 10 (7.5)
FIELD INSTALLED OPTIONSHigh Clearance Skid ShoesOffset HitchCrop Divider
(Specifications and design are subject to change without notice and without liability therefore.)
Challenger Sales Engineering, March 2005
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SPECIFICATIONS
HTD8 DISC MOWER
MODEL ........................................................................................HTD8 - 7 ft 10 in Disc Mower
DIMENSIONS & WEIGHT
Weight lb (kg) ......................................................................................................... 1340 (608)
CUTTERBED
Cutting Width ft (m) .................................................................................................. 7.8 (2.38)Number of Discs.....................................................................................................................6Number of Knives..............................................................................................12 (2 per disc)Knife Lift, Standard Degrees ................................................................................................12Knife Lift, Optional Degrees .................................................................................................18Knife Circle Diameter IN (mm).................................................................................. 19.7(500)Recommended Cutting Angle Degrees ...........................................................................0 to 6Disc Speed rpm................................................................................................................3000
Tip Speed mph (km/hr).......................................................................................... 175.8 (289)Knives .................................................................................................Swingaway, ReversibleCutterbed Design ....................................................................................Horizontal Hex Shaft
Modular Gear ComponentsFlotation, Inner ............................................................ Non-Adjustable Enclosed Float SpringFlotation, Outer....................................................................................Adjustable Float Spring
FRAMEProtection .......................................................................................Spring Loaded BreakawayHeat Treated Skid Shoes .......................................................................................................6Hydraulic Lift..............................................................................................................Standard
DRIVE SYSTEMPTO Speed rpm .................................................................................................................540Drive Line .....................................................................................................Constant VelocityDrive Protection.........................................................................................Overrunning ClutchGearcase Drive ........................................................................................4V “B” Section Belts
TRACTOR REQUIREMENTS
Recommended Horsepower hp (kW) ........................................................................... 40 (30)Tractor Type.................................................................................................. Equipped w/CabHitch....................................................................................................Category II Three PointHydraulics ................................................................................... Single Acting Remote ValveCutting Speed mph (km/hr) ................................................................................Up to 10 (7.5)
FIELD INSTALLED OPTIONS
High Clearance Skid ShoesOffset HitchCrop Divider
(Specifications and design are subject to change without notice and without liability therefore.)
Challenger Sales Engineering, March 2005
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SPECIFICATIONS
HTD9 DISC MOWER
MODEL ..........................................................................................HTD9 - 9 ft 2 in Disc Mower
DIMENSIONS & WEIGHT
Weight lb (kg) ......................................................................................................... 1340 (608)
CUTTERBED
Cutting Width in (mm)............................................................................................. 110 (2794)Number of Discs.....................................................................................................................7Number of Knives..............................................................................................14 (2 per disc)Knife Lift, Standard Degrees ................................................................................................12Knife Lift, Optional Degrees .................................................................................................18Knife Circle Diameter in (mm) ................................................................................. 19.7 (500)Recommended Cutting Angle Degrees ...........................................................................0 to 6Disc Speed rpm................................................................................................................3000
Tip Speed mph (km/hr).......................................................................................... 175.8 (289)Knives .................................................................................................Swingaway, ReversibleCutterbed Design ....................................................................................Horizontal Hex Shaft
Modular Gear ComponentsFlotation, Inner ............................................................ Non-Adjustable Enclosed Float SpringFlotation, Outer....................................................................................Adjustable Float Spring
FRAMEProtection .......................................................................................Spring Loaded BreakawayHeat Treated Skid Shoes .......................................................................................................7Hydraulic Lift..............................................................................................................Standard
DRIVE SYSTEMPTO Speed rpm .................................................................................................................540Drive Line .....................................................................................................Constant VelocityDrive Protection.........................................................................................Overrunning ClutchGearcase Drive ........................................................................................4V “B” Section Belts
TRACTOR REQUIREMENTS
Recommended Horsepower hp (kW) ........................................................................... 45 (34)Tractor Type.................................................................................................. Equipped w/CabHitch....................................................................................................Category II Three PointHydraulics ................................................................................... Single Acting Remote ValveCutting Speed mph (km/hr) ................................................................................Up to 10 (7.5)
FIELD INSTALLED OPTIONS
High Clearance Skid ShoesOffset HitchCrop Divider
(Specifications and design are subject to change without notice and without liability therefore.)
Challenger Sales Engineering, March 2005
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COMPETITIVE COMPARISONSHTD7 DISC MOWER
MAKE Challenger ®
New Holland JF KuhnMODEL HTD7 615 SB 2000 GMD 500
TRACTOR REQUIREMENTSPTO HP, Minimum hp (kW) 35 (26) 45 (34) 40 (230 35 (26)PTO Speed rpm 540 540 540 540Three Point Hitch Category Category I or II Category II Category II Category I or II
WEIGHTS AND DIMENSIONSTransport Width ft (m) INA INA 10 (254) Plus
TractorIINA
Weight lb (kg) 1026 (465) 1275 (580) 920 (418) 860 (390)
MOWER CAPACITY Cutting Width ft (m) 6.7 (2.03) 6.8 (2.03) 6.7 (2.01) 6.6 (2.01)Cutting Height in (mm) 1.5-3.25 (38-83) 1.1-3.5 (29-89) 1.5-2.5 (35-60) 1.1-2.0 (29-51)
DRIVESInput to Gearcase 3 HB V-Belt Multi V-Belt Multi V-Belt Multi V-BeltProtection Overrunning Clutch Overrunning Clutch INA Optional
FLOTATION ANDTRANSPORT
Breakaway Spring Loaded Spring Loaded Spring Loaded Spring LoadedFlotation Non-Adjustable Non-Adjustable Non-Adjustable Single SpringTransport System Hydraulic, Vertical
FoldHydraulic, Vertical
FoldHydraulic, Vertical
FoldHydraulic, Vertical
FoldCylinder Single-Acting Single-Acting Single-Acting Single-ActingTransport Lock Hydraulic Mechanical Hydraulic Mechanical
CUTTERBARStyle Individual Disc
Drive ModularComponents
Individual DiscDrive ModularComponents
Oil-Bath GearCutterbed
Oil-Bath GearCutterbed
Drive System Segmented HexDriveshafts
Individual SplinedShafts Intermeshing Gears
Intermeshing Gears
Lubrication Grease Oil Oil OilNumber of Discs 5 5 5 5Number of Knives per Disc 2 2 2 2
Disc Speed rpm 3000 3000 INA INAKnife Tip Speed mph (kph) 176 (283) 176 (283) INA INA
OPTIONS Topping Skids,Swathboard, InnerCrop divider, Tall
Crop Divider, OffsetHitch, Flotation
Spring Kit
Topping Skids, LeftHand Swath Kit
Topping Skids,Offset Hitch,
Overrun Clutch,Left Swathboard,
Cat I Adapter,Support Chain
Topping Skids,Overrunning
Clutch, MowingBelow Horiz. Kit
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COMPETITIVE COMPARISONSHTD7 DISC MOWER
MAKE Challenger ®
KroneMODEL HTD7 AM 203 S
TRACTOR REQUIREMENTSPTO HP, Minimum hp (kW) 35 (26) 36 (27)PTO Speed rpm 540 540Three Point Hitch Category Category I or II Category I or II
WEIGHTS AND DIMENSIONSTransport Width ft (m) INAWeight lb (kg) 1026 (465) 968 (440)
MOWER CAPACITY Cutting Width ft (m) 6.7 (2.03) 6.6 (2.00)Cutting Height in (mm) 1.5-3.25 (38-83) INA
DRIVESInput to Gearcase 3 HB V-Belt Gear and ShaftProtection Overrunning Clutch
FLOTATION AND TRANSPORT Breakaway Spring Loaded Spring LoadedFlotation Non-Adjustable Single Spring
Transport System Hydraulic, Vertical Fold Hydraulic, Vertical FoldCylinder Single-Acting Single-ActingTransport Lock Hydraulic Hydraulic
CUTTERBARStyle Individual Disc Drive Modular
ComponentsOil-Bath Gear Cutterbed
Drive System Segmented Hex Driveshafts Intermeshing GearsLubrication Grease OilNumber of Discs 5 5Number of Knives per Disc 2 2Disc Speed rpm 3000 INAKnife Tip Speed mph (kph) 176 (283) INA
OPTIONS Topping Skids, Swathboard, Inner Cropdivider, Tall Crop Divider, Offset Hitch,
Flotation Spring Kit
NA - Not AvailableINA - Information Not Available
Every attempt has been made to ensure the accuracy, but AGCO assumes no responsibility for authenticity of data. Datapresented is obtained from various sources, including manufacturers publications.
Sales Engineering, July, 2002
17