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Small Wheel Loaders

938M Small Wheel Loader

  • Maximum Gross Power
    188 HP
  • Engine Model
    Cat® C7.1 ACERT™
  • Rated Net Power
    182 HP
  • Maximum Rated Gross Power
    188 HP
Engine
Maximum Gross Power
188 HP
Engine Model
Cat® C7.1 ACERT™
Rated Net Power
182 HP
Maximum Rated Gross Power
188 HP
Maximum Rated Gross Power
190 HP
Maximum Rated Gross Power
1800 r/min
Maximum Rated Gross Power
188 HP
Maximum Rated Gross Power
190 HP
Rated Net Power
183 HP
Rated Net Power
184 HP
Rated Net Power
186 mhp
Maximum Gross Torque
664 ft·lbf
Maximum Net Torque
649 ft·lbf
Maximum Rated Gross Power
1600 r/min
Maximum Rated Gross Power
173 HP
Maximum Rated Gross Power
176 HP
Rated Net Power
170 HP
Rated Net Power
172 mhp
Maximum Gross Torque
642 ft·lbf
Maximum Net Torque
627 ft·lbf
Rated Net Power
184 HP
Maximum Net Torque
650 ft·lbf
Engine Model
Cat C7.1 ACERT**
Note
Net power ratings are tested at the reference conditions for the specified standard and denote power available at the flywheel when the engine is equipped with alternator, air cleaner, emission components and fan at specified speed.
Note
*Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Rated Net Power
170 HP
Note
**The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.
Maximum Net Torque
628 ft·lbf
Displacement
427 in³
Displacement
427 in³
Maximum Gross Power
176 mhp
Maximum Gross Power
188 HP
Maximum Gross Power
190 mhp
Maximum Gross Power
173 HP
Bore
4 in
Bore
4 in
Stroke
5 in
Stroke
5 in
Displacement
427 in3
Displacement
427 in³
Maximum Net Torque
628 lb/ft
Rated Net Power
169 HP
Maximum Net Torque
628 lb/ft
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Note
* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Note
Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Buckets
Bucket Capacities
2.5-5.0 m3 (3.3-6.5 yd3)
Bucket Capacities
2.5-5.0 m3 (3.2-6.5 yd3)
Bucket Capacities
2.5-3.2 m³ (3.2-4.2 yd³)
Bucket Capacities
3.1-5.0 m³ (4.0-6.5 yd³)
Bucket Capacities
2.5-3.2 m3 (3.2-4.2 yd3)
Bucket Capacities
3.1-5.0 m3 (4.0-6.5 yd3)
Weights
Operating Weight
36216 lb
Operating Weight
35778 lb
Tires
Standard Size
20.5 R25, radial (L-3)
Other Choices Include
20.5 R25, radial (L-2); 20.5 R25, radial (L-5); 20.5-25 12PR (L-2); 20.5-25 12PR (L-3); 20.5-25 16PR (L-5)
Other Choices Also Include
23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Flexports Gen II
Note
Other tire choices are available. Contact your Cat dealer for details.
Standard Size
20.5 R25, radial (L-3)
Note
In certain applications, the loader’s productive capabilities may exceed the tire’s tonnes-km/h (ton-mph) capabilities.
Other Choices Include
20.5 R25, radial (L-2); 20.5 R25, radial (L-5); 20.5-25 12PR (L-2); 20.5-25 12PR (L-3); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Solid Tires
Note
Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Axles
Front
Fixed; Locking differential (standard)
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)
Front
Fixed; Locking differential (standard)
Cab
ROPS
SAE J1040 MAY94, ISO 3471-1994.
ROPS
ISO 3471:2008
FOPS
SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II.
FOPS
ISO 3449:2008 Level II
Note
*The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.
Note
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
Note
The declared dynamic operator sound pressure levels per ISO 6396:2008*, when properly installed and maintained, are:
– Standard cab: 68 ±3 dB(A)
– Deluxe cab: 66 ±2 dB(A)
Sound
Note
European Union Directive “2000/14/EC”
Average Exterior Sound Pressure
101 dB(A)
Operator Sound Pressure
72 dB(A)
Loader Hydraulic System
Hydraulic Cycle Time
9.7 s
Maximum Flow
50 gal/min
Maximum Flow
50 gal/min
Maximum Flow
42 gal/min
Maximum Working Pressure
4061 psi
Relief Pressure
4351 psi
Relief Pressure
4061 psi
Relief Pressure
4351 psi
Lift Cylinder
4.7 in
Lift Cylinder
2.6 in
Lift Cylinder
31.1 in
Tilt Cylinder
5.9 in
Tilt Cylinder
3.5 in
Tilt Cylinder
21.9 in
Cycle Times
5.5/6.2 seconds
Cycle Times
1.5/1.7 seconds
Cycle Times
2.7/2.7 seconds
Cycle Times
9.7/10.6 seconds
Note
*3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time
10.6 s
Hydraulic Cycle Time
5.5 s
Lift Cylinder
4.7 in
Lift Cylinder
2.6 in
Lift Cylinder
31.1 in
Maximum Flow
50 gal/min
Maximum Working Pressure
4061 psi
Note
Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
Note
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Relief Pressure
4351 psi
Tilt Cylinder
5.9 in
Tilt Cylinder
3.5 in
Tilt Cylinder
21.9 in
Hydraulic Cycle Time
1.7 s
Hydraulic Cycle Time
1.5 s
Hydraulic Cycle Time
6.2 s
Hydraulic Cycle Time
2.7 s
Hydraulic Cycle Time
2.7 s
Maximum Flow
50 gal/min
Steering
Steering Cylinder
3.1 in
Steering Cylinder
2 in
Steering Cylinder
15.7 in
Maximum Flow
34 gal/min
Maximum Working Pressure
3500 psi
Maximum Steering Torque
42506 lbf-ft
Maximum Steering Torque
31398 ft·lbf
Steering Cycle Times
3.1 s
Steering Cycle Times
2.3 s
Steering Articulation Angle
40°
Maximum Flow
34 gal/min
Maximum Steering Torque
42506 ft·lbf
Maximum Working Pressure
3500 psi
Note
Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Note
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Steering Cylinder
3.1 in
Steering Cylinder
2 in
Steering Cylinder
15.7 in
Number of Steering Wheel Turns
3.3 turns
Steering Cycle Times
2.3 s
Operating Specifications
Full Turn Tip Load
22107 lb
Full Turn Tip Load
22107 lb
Service Refill Capacities
Fuel Tank
51.5 gal
Cooling System
8.5 gal
Engine Crankcase
5.3 gal
Transmission
2.9 gal
Front Axles
9.2 gal (US)
Rear Axles
9.2 gal (US)
Hydraulic System
44.9 gal
Hydraulic Tank
23.8 gal
Diesel Exhaust Fluid
5.0 gal
Cooling System
7.9 gal (US)
Diesel Exhaust Fluid
5 gal (US)
Engine Crankcase
5.3 gal (US)
Fuel Tank
51.5 gal (US)
Hydraulic System
44.9 gal (US)
Hydraulic Tank
23.8 gal (US)
Transmission
2.9 gal (US)
Note
DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Transmission
Forward and Reverse
1-13 km/h (0.6-8 mph)
Forward and Reverse
8 mile/h
Forward and Reverse
17 mile/h
Forward and Reverse
25 mile/h
Note
* Creeper control allows maximum speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1.
Note
Factory default is 7 km/h (4.4 mph).
Note
*Creeper control allows maximum speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the secondary display, when equipped. Factory default is 7 km/h (4.4 mph).
Power Train
Front Axle
Fixed
Front Axle
Locking differential
Rear Axle
Oscillating
Rear Axle
± 10.5 degrees
Rear Axle
± 7 degrees
Rear Axle
± 7 degrees
Rear Axle
Limited slip differential
Brakes
Outboard wet disc
Brakes
Spring applied hydraulically released
Brakes
Spring applied hydraulically released
Brakes
Outboard wet disc
Front Axle
Fixed
Note
Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Note
Differential front locking axle can be engaged on the go at full torque up to 20 km/h (12.4 mph) on the 938M.
Note
Offset rims available to meet European roading requirements.
Rear Axle
Oscillating
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes.
  • POWER TRAIN
    • Auto idle shut down feature
    • Cat C7.1 ACERT engine
      – Power modes (Standard and Performance)
      – Power by range (High Power in Range 4)
      – Turbocharged and aftercooled
      – Filtered crankcase breather
      – Diesel particulate filter
      – Selective Catalyst Reduction
    • Coded start (requires secondary display)
    • Coolant protection to –34° C (–29° F)
    • Enclosed wet disc full hydraulic brakes
    • Fuel priming pump, automatic
    • Hydraulically driven demand cooling fan
    • Hydrostatic transmission with electronic control
      – Operator modes (Default, TC, Hystat, and Ice)
      – Directional Shift Aggressiveness (fast, medium, slow)
      – Rimpull control, adjust wheel torque
      – Creeper control, adjust ground speed
    • Parking brake, electric
    • Single plane cooling package wide six fins per inch density
    • Throttle lock and max speed limiter
  • HYDRAULICS
    • Automatic lift and bucket kickouts, adjustable in-cab
    • Bucket and fork modes, adjustable in-cab
    • Cylinder damping at kickout and mechanical end stops
    • Fine mode control (fast, medium, slow) in fork mode
    • Hydraulic response setting (fast, medium, slow)
    • Hydraulic diagnostic connectors and S·O·SSM ports
    • Load sensing hydraulics and steering
  • ELECTRICAL
    • Alternator, 115 amp, heavy duty
    • 12V power supply in cab (2)
    • Batteries, 1,000 CCA (2) 24V system, disconnect switch
    • Back-up alarm
    • Emergency shutdown switch
    • Halogen work and roading lights, LED rear tail lights
    • Product Link PRO with three year subscription
    • Remote jump start post
    • Resettable main and critical function breakers
  • OPERATOR ENVIRONMENT
    • 75 mm (3 in) retractable seat belt, with audible alarm and indicator
    • Automatic temperature control
    • External heated mirrors with lower parabolic
    • Hydraulic control lockout
    • Interior cab lighting, door and dome
    • Interior rearview mirrors (2)
    • Lunch box storage
    • Radio ready speakers
    • Rear window defrost, electric
    • Seat-mounted electronic implement controls, adjustable
    • Column mounted multi function control – lights, wipers, turn signal
    • Tilt and telescopic steering wheel
    • Tinted front glass
    • Wet arm wiper/washer, 2-speed and intermittent, front
  • OTHER STANDARD EQUIPMENT
    • Large-access enclosure doors with adjustable close/open force
    • Parallel lift loader linkage
  • EU STANDARD EQUIPMENT
    • Deluxe cab
    • Secondary display
    • Rearview camera
  • OPTIONAL EQUIPMENT
    • Autolube, integrated in secondary display
    • Auxiliary flow, third and fourth function, adjustable through secondary display
    • Beacon light, strobe
    • Cab, deluxe (standard in Europe, optional in North America)
      – Electrically adjustable external heated mirrors (2)
      – Secondary display to enable features and adjust parameters
      – Sunscreen, front and rear
    • Camera, rearview (standard in Europe)
    • Cold start package
    • Counterweight, (heavy and logger)
    • Coupler, (Fusion and ISO 23727)
    • Debris packages (low, medium, high)
    • Fenders (extended cover and full coverage)
    • Guarding (machine and operator)
    • Linkage, high lift
    • Lights, auxiliary, halogen or LED with engine and DEF compartment lights
    • Object Detection
    • Product Link ELITE with capabilities for software push, data logging, histogram and trend mapping
    • Radio packages
    • Ride Control System, adjustable through secondary display
    • Seats
      – Deluxe seat – fully adjustable fabric air suspension seat with mid backrest and mechanical lumbar support
      – Premium seat – fully adjustable leather and fabric air suspension with high backrest and air lumbar support. Seat is heated and ventilated on bottom cushion and backrest.
    • Steering
      – Dual mode and secondary
    • NOTE: Not all features are available in all regions.