The Cat 938M Small Wheel Loader sets the standard for productivity, fuel efficiency and operator comfort. The improved optimized Z-bar loader linkage delivers the quick loading performance of a traditional Z-bar with the parallelism and load handling capability of a tool carrier. A high torque, low speed C7.1 ACERT engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard. Meets Tier 4 Final/Stage V emission standards with an environmentally friendly, Clean Emission Module designed to manage itself so you can concentrate on your work. Experience the new industry benchmark.
Maximum Gross Power 188 hp
Operating Weight 35778 lb
Bucket Capacities 2.5-5.0 m3 (3.2-6.5 yd3)
ROPS ISO 3471:2008
Displacement (Performance Power Mode: Speed Range 1-4) 427in³
Displacement (Standard Power Mode: Speed Range 1-3*) 427in³
Engine Model Cat C7.1 ACERT**
Maximum Gross Power 188hp
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*) 176mhp
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*) 173hp
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4) 190mhp
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4) 188hp
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) 664ft·lbf
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) 642ft·lbf
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4) 650ft·lbf
Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*) 628ft·lbf
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) 649ft·lbf
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) 627ft·lbf
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) 1800r/min
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) 1600r/min
Note (1) 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 (2) *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Note (3) **The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 172mhp
Rated Net Power - 1,600 rpm - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 170hp
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 170hp
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4) 186mhp
Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 184hp
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 183hp
Operating Weight 35778lb
Bucket Capacities 2.5-5.0 m3 (3.2-6.5 yd3)
Bucket Capacities - General Purpose 2.5-3.2 m³ (3.2-4.2 yd³)
Bucket Capacities - Light Material 3.1-5.0 m³ (4.0-6.5 yd³)
FOPS ISO 3449:2008 Level II
Note (1) Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
Note (2)
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)
Note (3) *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.
ROPS ISO 3471:2008
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height 1.5s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level 2.7s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift 5.5s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time 9.7s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height 1.7s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level 2.7s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift 6.2s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time 10.6s
Maximum Flow - Implement Pump 50gal/min
Maximum Flow - Implement Pump - 3rd Function Maximum Flow* 50gal/min
Maximum Flow - Implement Pump - 4th Function Maximum Flow* 42gal/min
Maximum Working Pressure - Implement Pump 4061psi
Note (1) *3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Relief Pressure - Tilt Cylinder 4351psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure 4061psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure 4351psi
Maximum Flow - Steering Pump 34gal/min
Maximum Steering Torque - 0° (Straight Machine) 42506ft·lbf
Maximum Steering Torque - 40° (Full Turn) 31398ft·lbf
Maximum Working Pressure - Steering Pump 3500psi
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left 3.3turns
Steering Articulation Angle - Each Direction 40°
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed 2.3s
Note (1) Other tire choices are available. Contact your Cat dealer for details.
Note (2) In certain applications, the loader’s productive capabilities may exceed the tire’s tonnes-km/h (ton-mph) capabilities.
Note (3) Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
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
Standard Size 20.5 R25, radial (L-3)
Forward and Reverse - Range 1* 1-13 km/h (0.6-8 mph)
Forward and Reverse - Range 2 8mile/h
Forward and Reverse - Range 3 17mile/h
Forward and Reverse - Range 4 25mile/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 through the secondary display, when equipped. Factory default is 7 km/h (4.4 mph).
Cooling System 7.9gal (US)
Diesel Exhaust Fluid (DEF) Tank 5gal (US)
Engine Crankcase 5.3gal (US)
Front Axles 9.2gal (US)
Fuel Tank 51.5gal (US)
Hydraulic System - Including Tank 44.9gal (US)
Hydraulic Tank 23.8gal (US)
Note DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Rear Axles 9.2gal (US)
Transmission - Gear Box 2.9gal (US)
Average Exterior Sound Pressure (ISO 6395:2008) 101dB(A)
Note (1) European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008) 72dB(A)
Front Fixed; Locking differential (standard)
Rear Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)
Recyclability 94%
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.
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
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
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
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
Large-access enclosure doors with adjustable close/open force
Parallel lift loader linkage
Deluxe cab
Secondary display
Rearview camera
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.
