938M Aggregate Handler Small Wheel Loader

Specifications

Benefits & Features

Equipment

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The Cat® 938M Aggregate Handler sets a new standard for productivity, fuel efficiency and comfort. A high torque, low speed C7.1 engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard. The optimized Z-bar loader linkage combined with long wear life Performance Series buckets delivers improved payloads and bucket longevity. Extremely low sound levels, large spacious cab and intuitive controls keep you working comfortably all day and even all night! Experience this industry benchmark.

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US
Metric

Engine

Maximum Gross Power 188.0 HP 142.0 kW

Bore 4.0 in 105.0 mm

Stroke 5.0 in 135.0 mm

Displacement 427.0 in³ 7.01 l

Engine Model Cat® C7.1 ACERT™ Cat® C7.1 ACERT™

Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4) 188.0 HP 140.0 kW

Rated Net Power 182.0 HP 136.0 kW

Maximum Rated Gross Power - ISO 14396 188.0 HP 140.0 kW

Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 182.0 HP 136.0 kW

Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) 188.0 HP 140.0 kW

Maximum Rated Gross Power - ISO 14396 (DIN) 188.0 HP 140.0 kW

Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 184.0 HP 137.0 kW

Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) 1800.0 r/min 1800.0 r/min

Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) 648.0 ft·lbf 879.0 N·m

Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) 173.0 HP 129.0 kW

Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 168.0 HP 125.0 kW

Note (4) Spark arrester performance as standard – Meets the performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test). Spark arrester performance as standard – Meets the performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).

Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 171.0 HP 126.0 kW

Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4) 186.0 HP 137.0 kW

Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) 648.0 ft·lbf 879.0 N·m

Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4) 628.0 ft·lbf 852.0 N·m

Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*) 628.0 ft·lbf 852.0 N·m

Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 169.0 HP 126.0 kW

Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) 1600.0 r/min 1600.0 r/min

Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*) 175.0 HP 129.0 kW

Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) 621.0 ft·lbf 843.0 N·m

Note (3) No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems. No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.

Note (1) * Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology. * Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.

Note (2) 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. 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.

Emissions Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards. Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.

Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) 621.0 ft·lbf 843.0 N·m

Buckets

Bucket Capacities 2.9-3.2 m3 (3.8-4.2 yd3) 2.9-3.2 m3 (3.8-4.2 yd3)

Weights

Operating Weight 36075.0 lb 16368.0 kg

Cab

ROPS ISO 3471: 2008, FOPS: ISO 3449: 2005 LEVEL II ISO 3471: 2008, FOPS: ISO 3449: 2005 LEVEL II

Note (2) The Blue Angel environmental label is an optional attachment for Europe only. The Blue Angel environmental label is an optional attachment for Europe only.

Note (1) * Measurements were conducted at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds. The cab was properly installed and maintained. The measurements were conducted with the cab doors and the cab windows closed. * Measurements were conducted at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds. The cab was properly installed and maintained. The measurements were conducted with the cab doors and the cab windows closed.

Declared Sound Levels – Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)* – Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)* – Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)* – Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)*

Steering

Maximum Flow - Steering Pump 34.0 gal/min 130.0 l/min

Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited 3.1 s 3.1 s

Maximum Steering Torque - 40° (Full Turn) 31398.0 ft·lbf 42570.0 N·m

Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed 2.3 s 2.3 s

Maximum Steering Torque - 0° (Straight Machine) 42506.0 ft·lbf 57630.0 N·m

Steering Cylinder, Double Acting - Bore Diameter 3.1 in 80.0 mm

Steering Cylinder, Double Acting - Rod Diameter 2.0 in 50.0 mm

Steering Cylinder, Double Acting - Stroke 15.7 in 399.0 mm

Note (1) Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders. Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.

Maximum Working Pressure - Steering Pump 3500.0 psi 24130.0 kPa

Note (2) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).

Service Refill Capacities

Rear Axles 9.2 gal (US) 35.0 l

Hydraulic System - Including Tank 44.9 gal (US) 170.0 l

Hydraulic Tank 23.8 gal (US) 90.0 l

Diesel Exhaust Fluid (DEF) Tank 5.0 gal (US) 19.0 l

Engine Crankcase 5.3 gal (US) 20.0 l

Cooling System 8.5 gal (US) 32.0 l

Front Axles 9.2 gal (US) 35.0 l

Transmission - Gear Box 2.9 gal (US) 11.0 l

Fuel Tank 51.5 gal (US) 195.0 l

Loader Hydraulic System

Note (1) Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder. Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.

Tilt Cylinder, Double Acting - Bore Diameter 5.9 in 150.0 mm

Relief Pressure - Tilt Cylinder 4351.0 psi 30000.0 kPa

Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Dump (at Maximum Lift Height) 1.5/1.7 seconds 1.5/1.7 seconds

Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time 9.7/10.6 seconds 9.7/10.6 seconds

Tilt Cylinder, Double Acting - Rod Diameter 3.5 in 90.0 mm

Maximum Flow - Implement Pump 50.0 gal/min 190.0 l/min

Note (2) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm)

Tilt Cylinder, Double Acting - Stroke 21.9 in 555.0 mm

Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Raise (Ground Level to Maximum Lift) 5.5/6.2 seconds 5.5/6.2 seconds

Maximum Flow - Implement Pump - 3rd Function* 50.0 gal/min 190.0 l/min

Note (3) * 3rd function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped. * 3rd function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.

Lift Cylinder, Double Acting - Stroke 31.1 in 789.0 mm

Maximum Working Pressure - Implement Pump 4061.0 psi 28000.0 kPa

Lift Cylinder, Double Acting - Bore Diameter 4.7 in 120.0 mm

Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Float Down (Maximum Lift to Ground Level) 2.7/2.7 seconds 2.7/2.7 seconds

Lift Cylinder, Double Acting - Rod Diameter 2.6 in 65.0 mm

Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure 4061.0 psi 28000.0 kPa

Power Train

Brakes - Parking Spring applied hydraulically released Spring applied hydraulically released

Rear Axle - Traction Aid - Optional Limited slip differential Limited slip differential

Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 ± 7 degrees ± 7 degrees

Rear Axle Oscillating Oscillating

Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 ± 10.5 degrees ± 10.5 degrees

Note (2) Offset rims available to meet European roading requirements. Offset rims available to meet European roading requirements.

Note (1) Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency. Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.

Brakes - Service Outboard wet disc Outboard wet disc

Note (3) **Differential front locking axle can be engaged on the go at full torque to 20 km/h (12.4 mph) on the 938M. **Differential front locking axle can be engaged on the go at full torque to 20 km/h (12.4 mph) on the 938M.

Front Axle Fixed Fixed

Front Axle - Traction Aid** Locking differential (standard) Locking differential (standard)

Operating Specifications

Full Turn Tip Load 23466.0 lb 10647.0 kg

Transmission

Forward and Reverse - Range 4 25.0 mile/h 40.0 km/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). * 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) 1-13 km/h (0.6-8 mph)

Forward and Reverse - Range 2 8.0 mile/h 13.0 km/h

Forward and Reverse - Range 3 17.0 mile/h 27.0 km/h

Application Specific Configuration

INCREASED PAYLOAD
Additional counterweight improves stability without reducing ground clearance or departure angle to maximize performance.

LONG LIFE SAND AND GRAVEL BUCKETS
Performance Series Buckets deliver higher fill factors and better material retention for significant productivity and fuel efficiency improvements. The buckets feature a long floor, open throat, curved side bars and additional serviceable wear plates including corner guards.

PROTECT YOUR POWER TRAIN
Increase your fording depths with optional elevated breathers. Remote mounted high on the machine for the front and rear axles and hydrostatic gear box. Allows settling pond clean out without contamination.

Efficiently Powerful

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.

Enjoy All Day Comfort

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.

Customize Your Experience

The M Series Aggregate Handler 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

Service

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.

Customer Support

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.

938M Aggregate Handler Standard Equipment

POWER TRAIN

Axle seal guards

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 (Fit for Life)

Coolant protection to –34° C (–29° F)

Differential lock in front axle

Dry type air cleaner

Enclosed wet disc full hydraulic brakes

Fuel priming pump, automatic

Fuel water separator

Hydraulically driven demand cooling fan

Intelligent hydrostatic transmission: – Power train modes – Directional Shift Aggressiveness – Rimpull control, adjust wheel torque – Creeper control, adjust ground speed

Lubed for life driveshafts

Parking brake, electric

Wide spaced 6 fins per inch cooling package

S·O·SSM sampling ports

Throttle lock and maximum speed limiter

HYDRAULICS

Automatic lift, lower and tilt kickouts

Bucket and Fork Modes, adjustable in-cab

Cylinder damping at kickout and end stops

Fine Mode control in Fork Mode

Hydraulic Response setting

Load sensing hydraulics and steering

Seat-mounted hydraulic joystick controls

ELECTRICAL

Alternator, 115-amp, heavy duty

12V power supply in cab (2)

Batteries, 1,000 CCA (2) 24 volt system

Back-up alarm

Emergency shutdown switch

Heavy duty gear reduction starter

Product Link PRO with 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

Cab, enclosed and pressurized

Cup holders

External heated mirrors with lower parabolic

Ground level cab door release

Gauges: – Digital hour meter, odometer, tachometer, ground speed and direction indicator – Engine coolant temperature gauge – Fuel and Diesel Exhaust Fluid level – Hydraulic oil temperature gauge

Hydraulic control lockout

Interior cab lighting, door and dome

Interior rearview mirrors (2)

Lunch box storage

Operator warning system indicators

Radio ready speakers

Rear window defrost, electric

Seat-mounted controls, adjustable

Sliding glass on the side windows

Column mounted multi function control – lights, wipers, turn signal

Suspension seat, fabric

Tilt and telescopic steering wheel

Wet arm wiper/washer, front and rear

OTHER STANDARD EQUIPMENT

Large-access enclosure doors

Parallel lift loader linkage

Recovery hitch with pin

Remote mounted lubrication points

Lockable compartments and enclosures

938M Aggregate Handler Optional Equipment

Cab, deluxe (standard in Europe):

Automatic blower control

Electrically adjustable heated mirrors (2)

LED interior lighting

Secondary display to adjust settings

Cold start package:

Ether starting aid, block heater and additional batteries 1,000 CCA (4 in total)

Guards

Power train, (lower, side, driveshaft and crankcase)

Windshield and lights

Cylinders, tilt and steering

Radio packages:

Radio ready with Bluetooth

Radio, AM/FM with Bluetooth and clock

Radio, AM/FM with CD player deluxe, weatherband, Bluetooth and clock

Seats:

Deluxe seat – fully adjustable fabric air suspension seat with high seat backrest

Premium seat – fully adjustable leather and fabric air suspension with high backrest and air lumbar support. Heated and cooled bottom cushion and backrest.

Steering:

Dual mode and Secondary

Tires:

Bias ply, 17.5, 20.5-25

Radial, 17.5, 20.5, 23.5, 550/65, 600/65, 650/65 R25

Resources for 938M Aggregate Handler

Small Wheel Loaders (Aggregate Handler Arrangements) Product Brochure