Issued February 2018 • Index No. ED/4.4
™
Bobcat 225 and 250
Industrial
Applications
Quick
Specs
Maintenance
Repair
Farm/ranch
Fabrication
Structural steel work
Use as a stand-alone
generator
Gas or LP Engine-Driven
Welder/AC Generator
Processes
Output Range
225
250
250 EFI
Stick (SMAW)
MIG (GMAW)
Flux-cored (FCAW)
DC TIG (GTAW)
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
AC stick/TIG
DC stick/TIG*
MIG/flux-cored
60–160 A
40–225 A
19–28 V
40–250 A
40–250 A
17–28 V
40–250 A
40–250 A
17–28 V
*DC TIG available above 80 amps.
Generator Power Output Rated at 104°F (40°C)
225/250: 11,000 watts peak
225/250: 9,500 watts continuous
250 EFI: 12,000 watts peak
250 EFI: 10,500 watts continuous
Rugged welder/generators are great for stick and flux-cored welding.
Designed for maintenance/repair operations, construction, farm,
ranch and generator use.
The most popular welder/generator
in the industry, the Bobcat is:
• Quieter to operate
• Smaller and lighter
• More fuel efficient with EFI
• Easier to maintain
Safer, more productive
jobsite
Easier mobility and uses less
truck space and payload
Easier Maintenance
With its intuitive design, the
daily maintenance of our
Bobcat welder/generators
is faster and easier.
Bobcat 250 EFI model shown.
Welder/generator is warranted for three years, parts and labor.
Engine is warranted separately by the engine manufacturer.
Miller Electric Mfg. LLC
Equipment Sales US and Canada
An ITW Welding Company
1635 West Spencer Street
P.O. Box 1079
Appleton, WI 54912-1079 USA
Phone: 866-931-9730
FAX: 800-637-2315
International Phone: 920-735-4554
International FAX: 920-735-4125
MillerWelds.com
The Bobcat Advantage
™
Quieter and better sound*
Easier maintenance*
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
S f
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.
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/filter
Air filter
Fuel fill
Oil filter
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.
Easier mobilit and
*Compared to previous model
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
Oil fill Oil level check
• 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
Fuel filter
Oil drain
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.
Bobcat 250 Additional Features
™
• Front panel fuel and sight gauges provide convenient fuel level
indication
• Smoother weld output and better generator power while welding
• More weld output than 225-amp welder generators — 72 percent
more power for MIG/flux-cored, 67 percent more for AC welding,
and 11 percent more for DC stick
Bobcat 250 recommended option
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
2
Reversed Generator Airflow
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.
The Bobcat Generator Power Advantage
™
™
Accu-Rated — not inflated generator power
Typical equipment power usage
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.
Bobcat welder/generators will easily start and run
the following equipment:
Bobcat
Equipment
Starting
Watts
Running
Watts
Barn Cleaner (5 hp)
11,600
3,000
Silo Unloader (5 hp)
12,200
4,300
Portable Conveyor (1/2 hp)
3,400
1,000
Milker (5 hp)
10,500
2,800
Hand Drill (1/2 inch)
600
600
Circular Saw (8-1/4 inch)
1,400
1,400
Air Compressor (1-1/2 hp)
8,200
2,200
Flood Lights (Vapor)
1,250
1,000
Smooth power — not spike power
Refrigerator/Freezer
2,200
700
Revolutionary ten-degree skewed-rotor design
optimizes generator performance for smoother
power — not spiked power found with other brands.
Better power — better performance.
Sump Pump
1,300
800
Millermatic® 212 Auto-Set™
MIG Welder (230 V)
6,500
6,500
Spectrum® 625 X-TREME™
(30 A, 230 V, 1/2-inch cut)
6,900
6,900
Competitor
Waveform Comparison
AC Power Volts
Generator Power Curve
300
264
250
216
200
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.
150
132
125
108
100
150 75
100 50
50 25
0
0
0
20
40
60
80
100
120
140
160
180
200
220
80
90
100
110
AC Power Amps at 120 V
0
10
20
30
40
50
60
70
AC Power Amps at 240 V
Tools and motors are designed to operate within 10 percent of 120/240 V. The power
generator of the Bobcat provides strong power while keeping the voltage within 10 percent of
120/240 V. This increases tool/motor performance and life.
3
Specifications (Subject to change without notice.)
Model
Bobcat
225
Bobcat
250
Welding
Mode
Process
CC/AC
Stick/TIG
1
Amp/Volt
Ranges
Rated Weld Output
at 104°F (40°C)2
Single-Phase
Generator Power
Sound Levels at
Max. Load/150 A
60 –160 A
150 A at 25 V, 100% duty cycle
73.5 dB/72 dB
225 A at 25 V, 100% duty cycle
H: 28 in. (711 mm)
H: 32.75 in. (832 mm)
(to top of exhaust)
W: 20 in. (508 mm)
D: 40.5 in. (1,029 mm)
485 lb.
(220 kg)
40 – 225 A
Peak: 11,000 watts
Continuous: 9,500 watts
120/240 V, 88/44 A, 60 Hz
Peak: 11,000 watts
Continuous: 9,500 watts
120/240 V, 88/44 A, 60 Hz
72.5 dB/72 dB
H: 28 in. (711 mm)
H: 32.75 in. (832 mm)
(to top of exhaust)
W: 20 in. (508 mm)
D: 40.5 in. (1,029 mm)
501 lb.
(227 kg)
CC/DC
Stick/TIG
CV/DC
MIG/FCAW
19 – 28 V
200 A at 20 V, 100% duty cycle
CC/AC
Stick/TIG
40 –250 A
225 A at 25 V, 100% duty cycle
250 A at 25 V, 60% duty cycle
CC/DC
Stick/TIG 1
40 –250 A
250 A at 25 V, 100% duty cycle
CV/DC
MIG/FCAW
17– 28 V
250 A at 28 V, 100% duty cycle
275 A at 25 V, 60% duty cycle
EFI Model
Peak: 12,000 watts
Continuous: 10,500 watts
Net
Weight 3
Dimensions
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.
Certified by Canadian Standards Association to both the Canadian and U.S. Standards.
Engine Specifications (Engines warranted separately by the engine manufacturer.)
Model
Engine Brand
and Warranty
Horsepower (HP)
Type
Bobcat
225 and 250
Kohler CH730,
3-year warranty
Gas: 23.5 hp at 3,600 rpm
LP: 21 hp at 3,600 rpm
Bobcat
250 EFI
Kohler ECH730,
3-year warranty
23 hp at 3,600 rpm
Twin-cylinder, four-cycle
overhead valve, industrial
air-cooled, gasoline*
(carburetor or EFI) or LP**
Weld
Speed
Idle
Speed
Fuel
Capacity
Oil
Capacity
Standard
Shutdowns
3,600
rpm
2,300
rpm
12 gal.
(45 L)
1.5 qt.
(1.4 L)
Low oil
pressure
*Fuel stabilizer is recommended for gas engines that are used infrequently.
**Hose and LP Tank Mounting Assembly and setup are required.
Performance Data
Mounting Specifications
Fuel Consumption
1.75
U.S. Gal./hour
G
GAS
GAS EFI
Generator Pwr
1.50
Generator Pwr
A B
1.25
Weld
1.00
4 Holes
Weld
Front Panel
2.00
C
0.75
0.50
Idle 2,200 rpm
D
0.25
0.00
0
50
100
150
200
250
300
10
12
E
F
Weld Amperes at 100% Duty Cycle
0
2
4
6
8
Power KVA at 100% Duty Cycle
Fuel Consumption Data
• 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
approximately 3/4 gallon per hour —
about 16 hours of operation (gas).
• Under a continuous load of 4,000 watts of
generator power, the Bobcat would run for
about 14 hours (gas) of operation.
4
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. (1,024 mm)
G. .406 in. (10.3 mm) diameter
Choose the Right Bobcat Engine Drive
™
Sound Levels
Bobcat 225
At Maximum Load / At 150 Amps
Sound Quality
Bobcat 250
UPGRADE
73.5 dB / 72 dB
72.5 dB / 72 dB
Good
Very Good
13 hours
13 hours / 15.5 hours with EFI
Good
Good / Very Good with EFI
Fuel System
Typical Runtime per 12-Gallon Tank
Efficiency
Type
Delivery
Gasoline
Gasoline or LP
Carburetor
Carburetor or EFI available
11,000 watts
11,000 / 12,000 watts with EFI
Generator
Peak Watts
Clean Power Quality
Very Good/Excellent
Very Good / Excellent
Power While Welding
Fair/Good — With voltage control
set near maximum
Good — Easier to fine-tune arc with
voltage control near maximum
Weld Performance
Stick
Good/Very Good
Very Good
Fair ( .035 in.)
Good ( .035 –1/16 in.)
Fair/Good (add WC-115A with contactor)
Very Good (add WC-115A with contactor)
MIG — Wire (solid/FCAW), Steel
MIG — Wire, Aluminum with Spool Gun
DC TIG (steel)
AC Weld
Carbon Arc Gouging
Good
Very Good
70–150 amps
40 – 250 amps
N/A
Good (carbons: rated 3/16 in.)
28 x 20 x 40.5 in.
28 x 20 x 40.5 in.
485 lb.
501 lb.
Hours/Oil change
Hours / Oil change/Fuel
Dimensions
Size (H x W x D)
Weight
Key Features
Maintenance Displays
Note: See MillerWelds.com or the Full-line Catalog to compare to Trailblazer models.
Function and Benefit Guide
1
2
3
4
5
6
7
8
1. Maintenance display provides 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 automatically 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 positions.
6. Engine choke control is used for easy engine starting.
Note: No choke necessary on EFI models.
7. 120/240 V receptacle with circuit breaker.
(For matching plug, order 119172.)
8. 120 V GFCI receptacles with circuit breakers.
5
Genuine Miller Options *Available as factory option. See ordering information on back page.
®
LP Gas*
Liquid withdrawal LP system with vaporizer and
regulator. Does not include tanks, brackets or
hose from tank to regulator.
Full KVA Plug
119172 Field
120/240 V, 50 A plug
(NEMA 14-50P) to fit full
KVA receptacle.
Note: Requires hose and LP tank mounting assembly
300917.
GFCI Receptacles* 300975 Field
Kit contains two GFCI 120 V duplex receptacles.
Electric Fuel Pump* 300976 Field
Recommended for gas engine operations at
altitudes above 5,000 feet. Improves engine
starting and high-output performance.
Spark Arrestor 300924 Field
Mandatory when operating on California grasslands, brush or forest-covered land, and all
national forests. For other areas, check your
state and local laws.
Remote Oil Drain and Filter Kit 300923 Field
Front mount for Kohler. Makes servicing easy
when engine drive is mounted in tight spots.
Female
Receptacle
Full KVA Adapter Cord 300517 Field
NEMA 14-50P to NEMA 6-50R. Adapts engine
drive 120/240 V plug to common Millermatic®
and Spectrum® 240 V plug.
Order the following from Miller Service Parts.
Engine Tune-Up Kits
230015 Field. Kohler CH730 (gas)
246115 Field. Kohler ECH730 (EFI gas)
252838 Field. Kohler CH730 (LP)
Includes spark plugs and engine filters.
Genuine Miller Accessories
®
™
Never Flat Tires
Available on Bobcat and
Trailblazer running gear.
• Eliminate costly jobsite
downtime
• Maintain constant tire pressure and will
not develop flats
• Protect against punctures
• Preserve maneuverability, even when
weighed down with heavy welding cable
Multi-Terrain
Running Gear
300913 Gas/LP,
with inner tubes
300914 Gas/LP,
with Never Flat tires
Includes two heavyduty 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.
Off-Road
Running Gear
300909 Gas/LP,
with inner tubes
300910 Gas/LP,
with Never Flat tires
Includes four
heavy-duty 15-inch tires and a rugged handle
to provide maximum maneuverability.
Protective Cage
with Cable Holders
300921 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.
Off-Road Running
Gear with
Protective Cage
and Never Flat
Tires
300912 Gas/LP
Running gear and
rugged cage with
cable holders protects your investment and is
easy to move around the jobsite.
Gas Cylinder
Mounting Assembly
300918 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.
6
Note: Not for use with LP tank mounting assembly.
Not recommended for use with protective cover.
Hose and LP Tank
Mounting Assembly
300917 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
300919 For gas
models without
protective cage or
running gear (shown)
300920 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.
Genuine Miller Accessories (Continued)
®
MIG/Flux-cored Welding
SGA 100C Control 043857
SGA with contactor required to connect
Spoolmate 3035 to CV engine drive. Includes
10-foot (3 m) 115 V 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
195375
Use for demanding applications, rated at 200 A,
60 percent duty cycle.
Millermatic 141 and 211 shown.
Millermatic® 141 907612
See literature DC/12.42
Millermatic® 211 907614
See literature DC/12.58
Millermatic® 212 Auto-Set™ 907405
See literature 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 auxiliary power.
Stick (SMAW) Welding
Weld Leads
2/0 Stick Cable Set, 50 ft. (15 m) 173851
Consists of 50-foot (15 m) 2/0 electrode cable
with holder, and 50-foot (15 m) work cable with
clamp. 350 A, 100% duty cycle.
2/0 Stick Cable Set, 100/50 ft. (30.5/15 m)
043952
Consists of 100-foot (30.5 m) 2/0 electrode
cable with holder, and 50-foot (15 m) work
cable with clamp. 300 A, 100% duty cycle.
Plasma Cutting
Spectrum 375 X-TREME and 625 X-TREME shown.
Spectrum® 375 X-TREME™ 907529
See literature PC/9.2.
Spectrum® 625 X-TREME™ 907579
See literature PC/9.6.
Spectrum® 875 907583
See literature PC/9.8.
The Spectrum 375 X-TREME and 625 X-TREME
come complete with protective X-CASE™
(not shown).
Trailers and Hitches
TIG (GTAW) Welding
SuitCase® X-TREME™ 8VS Wire Feeder
951582
SuitCase® X-TREME™ 12VS Wire Feeder
951543
Lightweight, voltage-sensing wire feeders
include secondary contactor, gas valve,
drive roll kit and Bernard™ BTB Gun 300 A.
See literature M/6.42.
Dynasty®
210 Series
For portable
AC/DC TIG.
See literature
AD/4.81.
Multiprocess Welding
Note: Trailer is shipped unassembled.
Spoolmatic® 30A
Spool Gun 130831
Air-cooled, 200-amp,
one-pound spool gun
for aluminum MIG.
See literature M/1.73.
Requires WC-115A control (137546011).
Spoolmate™ 3035
Spool Gun 195016
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.
HWY-Mid Frame Trailer 301438
1,424-pound (646 kg) capacity highway trailer
with welded steel tubing frame, heavy-duty axle
with roller bearing hubs and leaf-spring
suspension. Includes jack stand, fenders, lights,
and dual hitch with 2-inch (50 mm) ball hitch
and 3-inch (76 mm) lunette eye.
Cable Tree 043826
Provides an area to
conveniently wrap weld
cables and extension cords.
Multimatic™ 200 907518
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 120- or
240-volt power. Take it anywhere you need to
MIG, TIG or stick weld. See literature DC/12.57.
2-In-1 Document/
Fire Extinguisher Holder
301236
Stores documents and holds a
five-pound fire extinguisher.
Note: Holder shown mounted
on trailer. Fire extinguisher not
included.
7
Ordering Information
Equipment and Options
Stock No.
Description
Bobcat™ 225
907498001
907498
Kohler engine, base model
Kohler engine with GFCI receptacles
Bobcat™ 250
907500001
907500
907500002
Kohler engine, base model
Kohler engine with GFCI receptacles
Kohler engine with electric fuel pump
Bobcat™ 250 EFI
907502
Kohler engine, base model
Bobcat 250 LP
907504
Kohler engine with GFCI receptacles
™
Qty.
Field Options Options listed below can be added to the above packages. Installation is required.
GFCI Receptacles
300975
Electric Fuel Pump
300976
Spark Arrestor
300924
Remote Oil Drain and Filter Kit
300923
Full KVA Adapter Cord
300517
Full KVA Plug
119172
Recommended for gas engine operations at altitudes above 5,000 feet
Front mount for Kohler
See page 6. Order from Miller Service Parts
Engine Tune-Up Kits
Accessories
Off-Road Running Gear
300909
300910
Gas/LP models, with inner tubes
Gas/LP models, with Never Flat™ tires
Off-Road Running Gear with Protective Cage
300912
Gas/LP models, with Never Flat™ tires.
Multi-Terrain Running Gear
300913
300914
Gas/LP models, with inner tubes
Gas/LP models, with Never Flat™ tires
Protective Cage with Cable Holders
300921
Gas/LP models
Gas Cylinder Mounting Assembly
300918
Gas models. Not for use with LP tank mounting assembly.
Not recommended for use with protective cover
Hose and LP Tank Mounting Assembly
300917
LP models. Not for use with gas cylinder mounting assembly.
Not recommended for use with protective cover
Protective Covers
See page 6
MIG/Flux-cored Welding
Millermatic® Series MIG Welders
See page 7
SuitCase® X-TREME Wire Feeders
See page 7
Spoolmatic 30A Spool Gun
130831
WC-115A Control
137546011
See literature M/1.73
Spoolmate™ 3035 Spool Gun
195016
See literature M/1.5
SGA 100C Control
043857
See literature M/1.5
Heavy-Duty Barrel for Spoolmate 3035
195375
See literature M/1.5
®
Requires WC-115A Control. See literature M/1.73
Stick Welding
See page 7
TIG Welding
See page 7
Multiprocess Welding
See page 7
Plasma Cutting
See page 7
Trailers and Hitches
HWY-Mid Frame Trailer
301438
Trailer with lights, fenders and dual hitch. For highway use
Cable Tree
043826
Trailer-mounted cable holder
2-In-1 Document/Fire Extinguisher Holder
301236
Stores documents and holds a five-pound fire extinguisher
Date:
Distributed by:
© 2018 Miller Electric Mfg. LLC
Total Quoted Price:
Price
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