938M
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
Displacement (Standard Power Mode: Speed Range 1-3*)
427 in³
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600 r/min
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Specifications
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Specification
Value
Maximum Gross Power
188 HP
Displacement (Standard Power Mode: Speed Range 1-3*)
427 in³
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600 r/min
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
183 HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
642 ft·lbf
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
176 mhp
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
649 ft·lbf
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
172 mhp
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
627 ft·lbf
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186 mhp
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800 r/min
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
664 ft·lbf
Displacement (Performance Power Mode: Speed Range 1-4)
427 in³
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 mhp
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.
Engine Model
Cat C7.1 ACERT**
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
170 HP
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
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 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
170 HP
Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*)
628 ft·lbf
Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184 HP
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4)
650 ft·lbf
Specification
Value
Bucket Capacities
2.5-5.0 m3 (3.2-6.5 yd3)
Bucket Capacities - Light Material
3.1-5.0 m³ (4.0-6.5 yd³)
Bucket Capacities - General Purpose
2.5-3.2 m³ (3.2-4.2 yd³)
Specification
Value
Operating Weight
35778 lb
Specification
Value
ROPS
ISO 3471:2008
FOPS
ISO 3449:2008 Level II
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.
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)
Specification
Value
Transmission - Gear Box
2.9 gal (US)
Engine Crankcase
5.3 gal (US)
Hydraulic System - Including Tank
44.9 gal (US)
Rear Axles
9.2 gal (US)
Front Axles
9.2 gal (US)
Diesel Exhaust Fluid (DEF) Tank
5 gal (US)
Note
DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Hydraulic Tank
23.8 gal (US)
Fuel Tank
51.5 gal (US)
Cooling System
7.9 gal (US)
Specification
Value
Note (1)
*3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift
5.5 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time
9.7 s
Relief Pressure - Tilt Cylinder
4351 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time
10.6 s
Maximum Working Pressure - Implement Pump
4061 psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure
4061 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height
1.7 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height
1.5 s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift
6.2 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
Maximum Flow - Implement Pump - 4th Function Maximum Flow*
42 gal/min
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure
4351 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
Maximum Flow - Implement Pump
50 gal/min
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*
50 gal/min
Specification
Value
Maximum Working Pressure - Steering Pump
3500 psi
Steering Articulation Angle - Each Direction
40°
Maximum Flow - Steering Pump
34 gal/min
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left
3.3 turns
Maximum Steering Torque - 0° (Straight Machine)
42506 ft·lbf
Maximum Steering Torque - 40° (Full Turn)
31398 ft·lbf
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed
2.3 s
Specification
Value
Forward and Reverse - Range 3
17 mile/h
Forward and Reverse - Range 4
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 through the secondary display, when equipped. Factory default is 7 km/h (4.4 mph).
Forward and Reverse - Range 1*
1-13 km/h (0.6-8 mph)
Forward and Reverse - Range 2
8 mile/h
Specification
Value
Note (1)
European Union Directive “2000/14/EC”
Average Exterior Sound Pressure (ISO 6395:2008)
101 dB(A)
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
Specification
Value
Note (1)
Other tire choices are available. Contact your Cat dealer for details.
Standard Size
20.5 R25, radial (L-3)
Note (2)
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 (3)
Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Specification
Value
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)
Front
Fixed; Locking differential (standard)
Specification
Value
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.
Specification
Value
Recyclability
94%
The Cat® C7.1 engine provides cleaner, quieter operation while delivering superior performance and durability through a high torque, low speed design. Caterpillar's exclusive Intelligent Power Management system monitors operator input and power availability to keep the machine working at peak efficiency and provide the operator with greater customization to suit their application.

A choice of Power Modes allows you to choose between maximum fuel efficiency or boosted power along with hydraulic speed.

STANDARD POWER MODE
  • Saves fuel and reduces cab sound levels
  • Biggest gains are seen during load and carry, snow removal and roading applications

PERFORMANCE POWER MODE
  • Enabled at the push of a button (HP+), boosts engine power by up to 10% and engine speed by over 12%
  • Increases hydraulic cycle times and productivity

Lock up and go with fully locking front differential axle that can be engaged on the move at full torque. Maximize your traction with optional Limited Slip Differential on the rear axle to keep you climbing.
OPTIMIZED Z-BAR LINKAGE

The optimized Z-bar linkage combines the digging efficiency of a traditional Z-bar with integrated tool carrier capabilities for great performance and versatility. Visibility to bucket corners and fork tips at ground level remain excellent while sight lines at maximum lift are improved with a Generation III lift arm design. Lift higher and reach further with optional High Lift linkage available on all three models.

QUICK LOADING PERFORMANCE SERIES BUCKETS

Performance Series Buckets deliver up to 10% higher fill factors compared to previous models, better material retention for significant productivity and fuel efficiency improvements. The buckets feature a longer floor to take a bigger bite of the pile, an open throat to heap higher and curved side bars to help with material retention.
A spacious, quiet and comfortable operator environment helps keep you relaxed and productive throughout the day. Experience superior all around visibility with single piece front windshield, redesigned linkage and clean hydraulic lines routing. Seat-mounted controls featuring low effort joystick for lift and tilt functions along with integrated Forward/Neutral/Reverse switch, differential lock trigger and optional third and fourth auxiliary functions.

  • Automatic climate control with heated rear glass and external mirrors
  • Information at a glance with large primary LCD display
  • Heated and cooled seat option
  • Optional Ride Control
  • Exclusive electro-hydraulic cylinder snubbing
  • An extra eye on the job site with optional integrated rear object detection and optional* rearview camera

*Standard in Europe.
The M Series Wheel Loaders will remember you and your personal settings with unique operator codes to make this machine truly yours and keep it secure.

Work as one with your machine by customizing your controls.
  • Select your Power Train Mode
  • Reduce tire wear using Rimpull
  • Fine tune ground speed with Creeper Control
  • Adjustable Electo-Hydraulic Controls
  • Set Directional Shift Response based on job application
Get up and running quickly with ground level, daily service access and optional engine compartment lighting. Three large service doors can be opened and closed in any order to give full access to filters and service points. Extended service intervals on hydraulic and power train filters reduce service time and maximize uptime. Additional service features include:

  • Product Link™ PRO standard with optional subscription to VisionLink®.
  • Maintenance reminders through secondary display at scheduled intervals.
  • Fit for Life Diesel Particulate Filter that is designed to exceed the engine overhaul life.
  • Quick fuel filter service with Caterpillar's exclusive electric fuel priming pump.
  • Jump start studs as standard equipment.
  • Extended cleanouts with single plane cooling system and wide spaced 6 fans per inch coolers as standard.
  • Integrated Autolube (optional) with adjustable greasing frequency.
With renowned Cat dealer support, rely on your Cat dealer to help you every step of the way with new or used machine sales, rental or rebuild options to meet your business needs.

Maximize your machine uptime with unsurpassed worldwide parts availability, trained technicians and customer support agreements.

Let us earn your business. Experience an M Series Small Wheel Loader and join the Caterpillar family.
  • The Cat® C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 5 emission standards.
  • Engine Idle Management System (EIMS) helps maximize fuel efficiency and reduce greenhouse gas emissions while maintaining machine performance.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Performance Series Buckets have rounded side boards, a longer floor and open angle to carry more and load quicker so each pass is the most efficient.
  • Rimpull Control is a quick way to adjust the torque to the tires for less slipping and tire wear.
  • Cat® Production Measurement provides real-time payload weighing which help you maximize productivity, reduce fuel burn and greenhouse gas emissions, all while improving job site efficiency and lowering costs.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
  • Power on Demand, transparent to the operator, provides full-time efficiency and power when you need it.
  • Tire Pressure Monitoring provides real-time tire pressure information to the operator to help increase tire wear and achieve better fuel efficiency and reduced greenhouse gas emissions.
  • Intelligent Hystat Transmission helps improves control and reduces fuel consumption and greenhouse gas emissions in load and carry applications.
  • Variable Displacement Pumps match power to load as application requirements change.
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