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938M Wheel Loader

938M Wheel Loader

At a Glance

Maximum Gross Power
188 HP
Operating Weight
36216 lb
Bucket Capacities
2.5-5.0 m3 (3.3-6.5 yd3)
Bore
4 in
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Overview

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 IV 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.

Engine

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Maximum Gross Power 188HP
Bore 4in
Stroke 5in
Displacement 427in³
Rated Net Power 182HP
Maximum Rated Gross Power - ISO 14396 188HP
Maximum Rated Gross Power - ISO 14396 (DIN) 190HP
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) 1800r/min
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) 188HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4) 190HP
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 182HP
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 184HP
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4) 186HP
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) 648lb/ft
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) 621lb/ft
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4) 628lb/ft
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) 1600r/min
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) 173HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*) 175HP
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 168HP
Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 169HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 171HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) 648lb/ft
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) 621lb/ft
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*) 628lb/ft
Engine Model Cat® C7.1 ACERT™
Emissions Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Note (1) * 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.
Note (3) No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
Note (4) Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).

Weights

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Operating Weight 36216lb

Buckets

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Bucket Capacities 2.5-5.0 m3 (3.3-6.5 yd3)

Cab

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ROPS ISO 3471: 2008
FOPS ISO 3449: 2005 LEVEL II
Note (1) Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab
Note (2) * Measurements were conducted with cab doors and windows closed and at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds.

Steering

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Maximum Steering Torque - 40° (Full Turn) 31398lb/ft
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited 3.1s
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed 2.3s
Note (1) Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Note (2) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Maximum Flow - Steering Pump 34gal/min
Maximum Steering Torque - 0° (Straight Machine) 42506lb/ft
Maximum Working Pressure - Steering Pump 3500psi
Steering Cylinder, Double Acting - Bore Diameter 3.1in
Steering Cylinder, Double Acting - Rod Diameter 2in
Steering Cylinder, Double Acting - Stroke 15.7in

Loader Hydraulic System

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Maximum Flow - Implement Pump - 3rd Function* 50gal/min
Maximum Flow - Implement Pump - 4th Function Maximum Flow* 42gal/min
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure 4061psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure 4351psi
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
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
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
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time 9.7/10.6 seconds
Note (1) * 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
Note (2) Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
Note (3) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Lift Cylinder, Double Acting - Bore Diameter 4.7in
Lift Cylinder, Double Acting - Rod Diameter 2.6in
Lift Cylinder, Double Acting - Stroke 31.1in
Maximum Flow - Implement Pump 50gal/min
Maximum Working Pressure - Implement Pump 4061psi
Relief Pressure - Tilt Cylinder 4351psi
Tilt Cylinder, Double Acting - Bore Diameter 5.9in
Tilt Cylinder, Double Acting - Rod Diameter 3.5in
Tilt Cylinder, Double Acting - Stroke 21.9in

Service Refill Capacities

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Front Axles 9.2gal (US)
Rear Axles 9.2gal (US)
Cooling System 8.5gal (US)
Diesel Exhaust Fluid (DEF) Tank 5gal (US)
Engine Crankcase 5.3gal (US)
Fuel Tank 51.5gal (US)
Hydraulic System - Including Tank 44.9gal (US)
Hydraulic Tank 23.8gal (US)
Transmission - Gear Box 2.9gal (US)

Transmission

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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).

Power Train

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Front Axle - Traction Aid - Standard Locking differential
Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 ± 10.5 degrees
Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 ± 7 degrees
Rear Axle - Oscillation Angle by Tire Size - Solid Tires, 750/65, 620/65, Skidder ± 7 degrees
Rear Axle - Traction Aid - Optional Limited slip differential
Note (1) Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Note (2) 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 (3) Offset rims available to meet European roading requirements.
Brakes - Parking Spring applied hydraulically released
Brakes - Service Outboard wet disc
Front Axle Fixed
Rear Axle Oscillating

Air Conditioning System

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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.

Operating Specifications

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Full Turn Tip Load 22107lb