Bobcat 225 And 250 - Miller

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Stick (SMAW)
Flux-Cored (FCAW)
Non-Critical AC TIG (GTAW)
Air Carbon Arc (CAC-A)
Cutting and Gouging
(250 model only, 3/16-in. carbons)
Air Plasma Cutting and Gouging
with optional Spectrum models
Farm/Ranch Applications
Structural Steel Work
Use as a Stand-Alone
Issued Jan. 2014 • Index No. ED/4.4
Output Range 225 250 250 EFI
AC Stick/TIG 70 –150 A 40 – 250 A 40 – 250 A
DC Stick/TIG* 50 – 225 A 40 – 250 A 40 – 250 A
FCAW/MIG 19 – 28 V 17 – 28 V 17 – 28 V
*DC TIG available above 80 amps.
Generator Power Output Rated at 104° F (40° C)
225/250 Peak: 11,000 W
225/250 Continuous: 9500 W
250 EFI Peak: 12,000 W
250 EFI Continuous: 10,500 W
Welder/generator is warranted for 3 years, parts and labor.
Engine is warranted separately by the engine manufacturer.
Not Inflated
Generator Power
Easier mobility and uses less
truck space and payload
With its intuitive design, the
daily maintenance of our
Bobcat welder/generators
is faster and easier.
Easier Maintenance
Safer, more productive
Bobcat 250 EFI model shown.
The most popular welder/generator
in the industry is getting better.
Building on its exceptional value,
the redesigned Bobcats are:
• Quieter to operate
• Smaller and lighter
• More fuel efficient with EFI
• Easier to maintain
Gas or LP Engine-Driven
Welder/AC GeneratorBobcat™225and250
Miller Electric Mfg. Co.
An ITW Company
1635 West Spencer Street
P.O. Box 1079
Appleton, WI 54912-1079 USA
MillerWelds.comEquipment Sales US and Canada
Phone: 866-931-9730
FAX: 800-637-2315
International Phone: 920-735-4554
International FAX: 920-735-4125
The Bobcat™Advantage
Designed for Reliability
From Appleton, Wis. USA, our welder/generators
are the most rugged, durable and long-lasting
in the industry. We manufacture them to exceed
requirements for extreme working conditions
and they are hard-working from the core:
• Copper windings and iron generator
components for a quality-built machine
• Lugged — not soldered — heavy internal
leads for better field durability
• Superior cooling technology
for maximum performance
and engine life
• Super-tough armor to
protect the welder/
generator from accidental impact
• Protective armor doors to cover the weld
studs and receptacles as required by OSHA
and CSA for jobsite safety
• Lift hook integrated into the center frame,
which bolts to the machine’s base for
greater durability
Long Runtimes
Large 12-gallon fuel capacity means many
hours of run time before refueling.
Versatile AC and DC Weld Output
Provides quality welds on all types of metals.
DC is smooth and easy to run while AC Stick
is used when arc blow occurs.
Quieter and Better Sound*
Significant improvements in sound
level and quality offer better jobsite
communication, which provides a safer,
more efficient working environment
for you and your crew. Bobcat
welder/generators have rotated the
engine toward the front to create more
efficient airflow, resulting in significantly quieter operation. Now you
can start your job earlier in the day and end it later, as well as work
around hospitals, businesses, and residential areas.
Smaller and Lighter Design*
Bobcat welder/generators take up less
space on trucks and trailers — leaving
more room on your truck for other
equipment and tools. Plus, they’re
easier to move safely around jobsites —
even with weld cables and running
gear attached.
*Compared to previous model
Easier Maintenance*
With its intuitive design, the daily maintenance of our Bobcat
welder/generators is faster and easier. With front panel maintenance
displays, you know when your equipment needs to be serviced. And
servicing is simple because of:
• Oil checks that can be performed from the top by the front panel
• Toolless panels that allow for quick access
• Single-side fuel fill and oil drain/filterS f
Easier mobilit and
Air filter
Oil fill Oil drainOil level check
Fuel fill Oil filter
Fuel filter
• Front panel fuel and sight gauges provide convenient fuel level
• Smoother weld output and better generator power while welding
• More weld output than 225-amp welder generators — 72 percent
more power for MIG/FCAW, 67 percent more for AC welding, and
11 percent more for DC Stick
Electronic Fuel Injection (EFI)
EFI gas engines optimize the air/fuel ratio for
all engine speeds and engine loads, resulting
in lower operational costs, fewer emissions, longer runtimes and
better performance when compared to carbureted models. The
payback from fuel savings alone is a matter of months.
EFI Advantages (vs. carburetor models)
• 12,000 watts of generator power
• Up to 27 percent better fuel efficiency — save up to $1,000 per
year in fuel and extend runtimes by as much as 2.5 hours per tank
• Fast, easy starts in all climates — no choke required
• Reliable operation, even with infrequent use — less prone to
fuel deterioration
• Fewer emissions — 27 percent less CO and 33 percent lower
HC+NOx levels
Bobcat™ 250 Additional Features
Bobcat 250 recommended option
Exclusive engine and generator packaging design
operates cooler and more efficiently. The engine
is rotated towards the front to create more efficient
airflow. More efficient airflow and exclusive
engine location are significant contributors to
reduced sound level and size reduction. Hot air
recirculation is eliminated when machine is
mounted in tight spots, and internal parts are kept
cool for optimal performance.
Reversed Generator Airflow
To select a generator that has enough power output
in watts, add the watts for the items you want to
simultaneously run. Tools and appliances with induction
motors may require three to seven times the listed wattage
when starting. All data listed is approximate — check
your tool/appliance for specific wattage requirements.
Starting Running
Equipment Watts Watts
Barn Cleaner (5 HP) 11,600 3000
Silo Unloader (5 HP) 12,200 4300
Portable Conveyor (1/2 HP) 3400 1000
Milker (5 HP) 10,500 2800
Hand Drill (1/2 inch) 600 600
Circular Saw (8-1/4 inch) 1400 1400
Air Compressor (1-1/2 HP) 8200 2200
Flood Lights (Vapor) 1250 1000
Refrigerator/Freezer 2200 700
Sump Pump 1300 800
Millermatic® 212 Auto-Set™ 6500 6500
MIG Welder (230 V)
Spectrum® 625 X-TREME™ 6900 6900
(30 A, 230 V, 1/2-inch cut)
The Bobcat™ Generator Power Advantage
Accu-Rated™— Not Inflated Generator Power
Our Accu-Rated™ 11,000 watts (12,000 with EFI) of usable peak power is
delivered for a minimum of 30 seconds. Accu-Rated means peak power is usable
for maximum generator loads such as plasma cutting, Millermatic® MIG welders
and motor starting. Accu-Rated peak power beats the competition’s very shortduration peak or surge power. Use your peak power, it’s more than a number.
Smooth Power — Not Spike Power
Revolutionary ten-degree skewed-rotor design
optimizes generator performance for smoother power—
not spiked power found with other brands. Better power —
better performance.
Typical Equipment Power Usage
Bobcats will easily start and run the following
Waveform Comparison
Tools and motors are designed to operate within 10 percent of 120/240 VAC. The Bobcat’s
power generator provides strong power while keeping the voltage within 10 percent of
120/240 VAC. This increases tool/motor performance and life.
0 10 20 30 40 50 60 70 80 90 100 110
0 20 40 60 80 100 120 140 160 180 200 220
Specifications (Subject to change without notice.)
225 and 250
250 EFI
Engine Brand
and Warranty
Kohler CH730,
3-year warranty
Kohler ECH730,
3-year warranty
Horsepower (HP)
Gas: 23.5 HP at 3600 RPM
LP: 21 HP at 3600 RPM
23 HP at 3600 RPM
Twin-cylinder, four-cycle
overhead valve, industrial
air-cooled, gasoline*
(carburetor or EFI) or LP
12 gal.
(45 L)
Low Oil
Oil Capacity
1.5 qt. (1.4 L)
Engine Specifications (Engines warranted separately by the engine manufacturer.)
Rated Output
at 100% Duty Cycle
(at 104° F/40° C)2
150 A at 25 V
225 A at 25 V
200 A at 20 V
225 A at 25 V
(250 A at 25 V,
60% Duty Cycle)
250 A at 25 V
250 A at 25 V
(275 A at 25 V,
60% Duty Cycle)
70–150 A
50–110 A
70–170 A
80–225 A
19–28 V
40–140 A
60–160 A
80–225 A
100–250 A
17–22 V
20–28 V
Generator Power
Peak: 11,000 watts
Continuous: 9500 watts
120/240 VAC, 88/44 A, 60 Hz
Peak: 11,000 watts
Continuous: 9500 watts
120/240 VAC, 88/44 A, 60 Hz
EFI Model
Peak: 12,000 watts
Continuous: 10,500 watts
Sound Levels
at Max. Load/
at 150 Amps
73.5 dB/72 dB
72.5 dB/72 dB
485 lb.
(220 kg)
501 lb.
(227 kg)
H: 28 in. (711 mm)
H: 32.75 in. (832 mm)
(to top of exhaust)
W: 20 in. (508 mm)
D: 40.5 in. (1029 mm)
H: 28 in. (711 mm)
H: 32.75 in. (832 mm)
(to top of exhaust)
W: 20 in. (508 mm)
D: 40.5 in. (1029 mm)
Certified by Canadian Standards Association to both the Canadian and U.S. Standards.
Note: Derate outputs up to five percent when using LP fuel. 1) DC TIG available above 80 amps. 2) Rated at sea level. 3) Net weight without fuel.
*Fuel stabilizer is recommended for gas engines that are used infrequently.
Performance Data Mounting Specifications
A. 20 in. (508 mm)
B. 16.5 in. (419 mm)
C. 1.75 in. (44.5 mm)
D. 5.12 in. (130 mm)
E. 22.3 in. (566 mm)
F. 40.32 in. (1024 mm)
G. .406 in. (10.3 mm) diameter
4 Holes
Fr on t P
an el G
0 50 100 150 200 250 300
0 2 4 6 8 10 12
Idle 2200 RPM
GAS EFI Generator Pwr
Generator Pwr
• 12-gallon fuel capacity.
• On a typical job using 1/8-inch 7018
electrodes (125 A, 20% duty cycle) expect
about 20 hours (gas) of operation.
• Welding at 150 A, 40% duty cycle uses
approxi mately 3/4 gallon per hour —
about 16 hours of operation (gas).
• Under a continuous load of 4000 watts of
generator power, the Bobcat would run for
about 14 hours (gas) of operation.
Note: See or the Full-line Catalog to compare to Trailblazer models.
Function and Benefit Guide
1. Maintenance Displays provide fuel level (250 models only), engine
hours and oil change interval information.
2. Weld Process Selector Switch makes choosing between Stick, Wire
and TIG processes easy. Switch also auto matically changes polarity
with process selection to make sure the machine is easy to set with
little effort or knowledge (on 225 model, Weld Process Selector
Switch is combined with Coarse Range Control).
3. Coarse Range Control
225 Model — Three DC Stick/TIG, one AC TIG, and one Wire range
are available for output control. Stick ranges are designed for
electrode diameters (3/32, 1/8 and 5/32 inch) making these models
very easy to set.
250 Model — Four Stick/TIG and two Wire ranges are available for
output control. Stick ranges are designed for electrode diameters
(3/32, 1/8, 5/32 and 3/16-inch) making these models very easy
to set.
4. Fine Adjust Control makes it easy to fine tune amperage within a
coarse range. Set control above 7 for best power while welding and
to 10 for generator-only use.
5. Engine Control Switch is used to start the engine and then select
between Auto Idle and High Speed Lock.
6. Engine Choke Control is used for easy engine starting.
Note: No choke necessary on EFI models.
7. 120 VAC and 240 VAC Covered Receptacles with Circuit Breakers.
Note: For matching plug, order #119 172.
Choose the Right Bobcat™ Engine Drive
Bobcat 250
72.5 dB / 72 dB
Up to 1/3 Less Noise
Very Good
13 hours / 15.5 hours with EFI
Good / Very Good
Gasoline or LP
Carburetor or x
11,000 / 12,000 with EFI
Very Good
Good — easier to fine tune arc with
voltage control near maximum
Very Good
Good: .035–1/16 in.
Very Good
Very Good
40–250 amps
Good / Very Good, Carbons: Rated 3/16 in.
28 x 20 x 40.5 in.
501 lb.
Hours / Oil Change / Fuel
Bobcat 225
73.5 dB / 72 dB
Up to 1/4 Less Noise
13 hours
Very Good
Fair / Good with voltage control
set near maximum
Good / Very Good
Fair: .035 in.
Fair / Good
70–150 amps
28 x 20 x 40.5 in.
485 lb.
Hours / Oil Change
Sound Levels
At Maximum Load / At 150 Amps
Compared to Previous Model
Sound Quality
Fuel System
Typical Runtime per 12-Gallon Tank
Clean Power Quality
Power While Welding
Weld Performance
Wire (Solid/FCAW), Steel
Wire, Aluminum with Spool Gun
DC TIG (Steel)
AC Weld
Carbon Arc Gouging
Size (H x W x D)
Key Features
Maintenance Displays
GFCI Receptacles* #300 975 Field
Kit contains two GFCI 120 VAC duplex receptacles.
LP Gas*
Liquid withdrawal LP system with vaporizer and
regulator. Does not include tanks, brackets, or
hose from tank to regulator.
Note: Order #300 917 Hose and LP Tank Mounting
Assembly separately.
Electric Fuel Pump* #300 976 Field
For gas models at high altitude. Improves
engine starting and high-output performance.
Spark Arrestor #300 924 Field
Mandatory when operating on California grass lands, brush or forest-covered land, and all
National Forests. For other areas, check your
state and local laws.
Remote Oil Drain and Filter Kit
#300 923 Field
Front mount for Kohler. Makes servicing easy
when engine drive is mounted in tight spots.
Adapter Cord, Full KVA #300 517 Field
NEMA 14-50P to NEMA 6-50R. Adapts engine
drive 120/240 V plug to common Millermatic®
and Spectrum® 240 V plug.
Full KVA Plug Kit
#119 172 Field
120/240 VAC, 50 A plug
(NEMA 14-50P) to fit full KVA
Order the following from Miller Service Parts.
Engine Tune-Up Kits
#230 015 Field. Kohler CH730 (Gas)
#246 115 Field. Kohler ECH730 (EFI Gas)
#252 838 Field. Kohler CH730 (LP)
Includes spark plugs and engine filters.
Genuine Miller® Options *Available as factory option. See ordering information on back page.
Genuine Miller® Accessories
Never Flat™ Tires
Available on Bobcat and
Trailblazer Running Gear.
• Eliminate costly jobsite
• Maintain constant tire pressure and will
not develop flats
• Protect against punctures
• Preserve maneuverability, even when
weighed down with heavy welding cable
Running Gear
#300 909 Gas/LP,
with inner tubes
#300 910 Gas/LP,
with Never Flat™
Includes four heavy-duty 15-inch tires and
a rugged handle to provide maximum
Off-Road Running
Gear with
Protective Cage
and Never Flat™
#300 912 Gas/LP
Running gear and
rugged cage with
cable holders protects your investment and is
easy to move around the jobsite.
Running Gear
#300 913 Gas/LP,
with inner tubes
#300 914 Gas/LP,
with Never Flat™
Includes two heavy-duty 15-inch tires, two 8-inch
rubber swivel casters and a heavy-duty handle.
Recommended for all surfaces and applications,
and is easy to move around the jobsite.
Protective Cage
with Cable Holders
#300 921 Gas/LP
Rugged cage with
cable holders
protects your
investment. Can be
used with running gear, Gas Cylinder Mounting
Assembly, LP Tank Mounting Assembly, or
with trailer.
Gas Cylinder
Mounting Assembly
#300 918 Gas
Designed for use with
Multi-Terrain Running
Gear, Protective Cage,
or by itself. Includes
base tray with bottle
bracket, vertical support rack and safety chain.
Note: Not for use with LP Tank Mounting Assembly.
Not recommended for use with Protective Cover.
Hose and LP Tank
Mounting Assembly
#300 917 LP
Designed for use with
Multi-Terrain Running
Gear, Protective Cage,
or by itself. Includes
bracket and clamp to
mount 33- and 43-pound tanks horizontally, and
hose with fittings to converter.
Note: Not for use with Gas Cylinder Mounting Assembly.
Not recommended for use with Protective Cover.
Protective Covers
#300 919 For Gas
models without
Protective Cage or
Running Gear (shown)
#300 920 For Gas
models with
Protective Cage
and/or Running Gear
Heavy-duty, water-resistant and mildewresistant covers protect and maintain the finish
of the welder.
Stick (SMAW) Welding
Weld Leads
#173 851 2/0, 350-amp, 100 percent duty
cycle. 50-foot stinger and 50-foot
work cable.
#043 952 2/0, 300-amp, 100 percent duty
cycle. 100-foot stinger and 50-foot
work cable.
Plasma Cutting
Spectrum 375 X-TREME and 625 X-TREME shown.
Spectrum® 375 X-TREME™ #907 529
See Lit. Index No. PC/9.2.
Spectrum® 625 X-TREME™ #907 579
See Lit. Index No. PC/9.6.
Spectrum® 875 #907 583
See Lit. Index No. PC/9.8.
The Spectrum 375 X-TREME and 625 X-TREME
come complete with protective X-CASE™
(not shown).
Multiprocess Welding
Multimatic™ 200 #907 518
Portable, all-in-one multiprocess package weighs
only 29 pounds (13.2 kg), and features excellent
arc characteristics. Exclusive Multi-Voltage Plug
(MVP™) provides flexibility to plug into 115- or
230-volt power. Take it anywhere you need to MIG,
TIG or Stick weld. See Lit. Index No. DC/12.57.
MIG/Flux-Cored Welding
Millermatic 211 Auto-Set with MVP shown.
Millermatic® 140 Auto-Set™ #907 335
See Lit. Index No. DC/12.42
Millermatic® 180 Auto-Set™ #907 312
See Lit. Index No. DC/12.44
Millermatic® 211 Auto-Set™ with MVP™ #907 422
See Lit. Index No. DC/12.54
Millermatic® 212 Auto-Set™ #907 405
See Lit. Index No. DC/12.46
The Millermatic line of MIG welders are complete
arc welding power source, wire feeder and gun
packages designed for portability and ease of use.
Note: The Millermatic machines can be operated
utilizing generator power.
SuitCase® X-TREME™ 8VS Wire Feeder
#951 583
SuitCase® X-TREME™ 12VS Wire Feeder
#951 543
Lightweight, voltage-sensing wire feeders include
secondary contactor, MIG gun, gas valve and
drive roll kit. See Lit. Index No. M/6.42.
Spoolmatic® 30A
Spool Gun #130 831
Air-cooled, 200-amp,
1-pound spool gun for
aluminum MIG. See
Lit. Index No. M/1.73.
Requires WC-115A Control (#137 546-01-1).
WC-115A Control #137 546-01-1
With contactor. Use with Spoolmatic 30A.
Spoolmate™ 3035
Spool Gun #195 016
Use with SGA 100C
Control and HeavyDuty Barrel. Spool gun
for aluminum and
other wires. Four-inch spools; .023–.035 inch
(0.6– 0.9 mm) aluminum, steel and stainless
steel. Rated at 150 amps, 60 percent duty cycle
with 20-foot (6 m) cable assembly.
SGA 100C Control #043 857
SGA with contactor required to connect
Spoolmate 3035 to CV engine drive. Includes
10-foot (3 m) 115 VAC power cable and plug,
6-foot (1.8 m) interconnecting cable, and 5-foot
(1.5 m) gas hose.
Heavy-Duty Barrel for Spoolmate™ 3035
#195 375
Use for demanding applications, rated at 200 A,
60 percent duty cycle.
TIG (GTAW) Welding
Dynasty® 200 Series
For premium portable AC/DC
TIG arc quality. See Lit. Index
No. AD/4.8.
HF-251 Series #042 388
HF-251D-1, 115 VAC
High-frequency arc starter
and stabilizer. See Lit.
Index No. AY/5.0. Requires
Secondary Contactor.
Secondary Contactor #041 969 Field
Required to use HF-251D-1.
Trailers and Hitches
HWY-1000 Trailer #195 013
A 1000-pound (454 kg) capacity highway trailer
with welded steel tubing frame, heavy-duty
axle with roller bearing hubs and leaf-spring
suspension. The HWY-1000 comes with jack stand,
2-inch (50 mm) ball hitch, fenders and lights.
Note: Trailer is shipped unassembled.
Cable Tree #195 023
Provides an area to conveniently wrap weld cables
and extension cords on the HWY-1000 trailer.
Dual Hitch #300 831
2-inch (50 mm) ball
hitch and 3-inch (76 mm)
lunette eye in one
reversible assembly.
Genuine Miller® Accessories (Continued)
Equipment and Options Stock No. Description Qty. Price
Bobcat™ 225 #907 498-001 Base model with Kohler engine
#907 498 Kohler engine, with GFCI Receptacles
Bobcat™ 250 #907 500-001 Base model with Kohler engine
#907 500 Kohler engine, with GFCI Receptacles
#907 500-002 Kohler engine, with Electric Fuel Pump
Bobcat™ 250 EFI #907 502 Base model with Kohler engine
Bobcat™ 250 LP #907 504 Kohler engine, with GFCI Receptacles
Field Options Options listed below can be added to the above packages. Installation is required.
GFCI Receptacles #300 975
Electric Fuel Pump #300 976 For gas models at high altitudes
Spark Arrestor #300 924
Remote Oil Drain and Filter Kit #300 923 Front mount for Kohler
Adapter Cord, Full KVA #300 517
Full KVA Plug Kit #119 172
Engine Tune-Up Kits See page 6. Order from Miller Service Parts
Off-Road Running Gear #300 909 Gas/LP models, with inner tubes
#300 910 Gas/LP models, with Never Flat™ tires
Off-Road Running Gear #300 912 Gas/LP models, with Never Flat™ tires.
with Protective Cage
Multi-Terrain Running Gear #300 913 Gas/LP models, with inner tubes
#300 914 Gas/LP models, with Never Flat™ tires
Protective Cage w/Cable Holders #300 921 Gas/LP models
Gas Cylinder Mounting Assembly #300 918 Gas models. Not for use with LP Tank Mounting Assembly.
Not recommended for use with protective cover
Hose and LP Tank Mounting #300 917 LP models. Not for use with Gas Cylinder Mounting Assembly.
Assembly Not recommended for use with protective cover
Protective Covers See page 6
Stick Weld Leads See page 7
Spectrum® Plasma Cutters See page 7
Multimatic™ 200 Welder #907 518 All-in-one MIG, TIG and Stick welding. See Lit. Index No. DC/12.57
Millermatic® Series MIG Welders See page 7
SuitCase® X-TREME Wire Feeders See page 7
Spoolmatic® 30A Spool Gun #130 831 Requires WC-115A Control. See Lit. Index No. M/1.73
WC-115A Control #137 546-01-1 See Lit. Index No. M/1.73
Spoolmate™ 3035 Spool Gun #195 016 See Lit. Index No. M/1.5
SGA 100C Control #043 857 See Lit. Index No. M/1.5
Heavy-Duty Barrel for #195 375 See Lit. Index No. M/1.5
Spoolmate 3035
Dynasty® 200 Series TIG Welders See Lit. Index No. AD/4.8
HF-251D-1 #042 388 115 VAC. Requires Secondary Contactor
Secondary Contactor #041 969
HWY-1000 Trailer #195 013
Cable Tree #195 023
Dual Hitch #300 831
Date: Total Quoted Price:
Ordering Information
© 2013 Miller Electric Mfg. Co.
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