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938M Aggregate Handler Small Wheel Loader

938M Aggregate Handler Small Wheel Loader

At a Glance

Maximum Gross Power
188 HP
Operating Weight
36839 lb
Bucket Capacities
2.9-5.0 m3 (3.8-6.5 yd3)
Bore
4 in
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Overview

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.

Engine

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Maximum Gross Power 188HP
Bore 4in
Stroke 5in
Displacement 427in³
Maximum Rated Gross Power - ISO 14396 188HP
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) 664ft·lbf
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) 649ft·lbf
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) 642ft·lbf
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) 627ft·lbf
Engine Model Cat® C7.1
Emissions The Cat C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 4 Final 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.
Maximum Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) 188HP
Maximum Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) 1800r/min
Maximum Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) 1600r/min
Maximum Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) 173HP
Maximum Net Torque - ISO 9249 (Performance Power Mode: Range 1-4) 650ft·lbf
Net Power - ISO 9249 (metric) at Minimum Fan Speed (Performance Power Mode: Range 1-4) 186HP
Net Power - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 184HP
Maximum Gross Power - ISO 14396 (metric) (Performance Power Mode: Range 1-4) 190HP
Net Power - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) 183HP
Net Power - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 170HP
Net Power (Standard Power Mode: Range 1-3*) 1600r/min
Maximum Gross Power - ISO 14396 (metric) (Standard Power Mode: Range 1-3*) 176HP
Net Power (Performance Power Mode: Range 1-4) 1800r/min
Maximum Rated Gross Power - ISO 14396 (metric) 190HP
Net Power - ISO 9249 (metric) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 172HP
Maximum Net Torque - ISO 9249 (Standard Power Mode: Range 1-3*) 628ft·lbf
Net Power - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) 170HP

Weights

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Operating Weight 36839lb
Note (2) ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires.
Note (1) **Aggregate Handler machine equipped with full counterweight and optional guards.
Operating Weight (2) 16 710 kg (36,839 lb)^
Operating Weight (1) 16 199 kg (35,712 lb)**

Buckets

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Bucket Capacities 2.9-5.0 m3 (3.8-6.5 yd3)

Cab

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ROPS ISO 3471:2008
Declared Sound Levels Declared Sound Levels
– Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)*
– Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)*
Note (1) * 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.
FOPS ISO 3449:2005 LEVEL II

Loader Hydraulic System

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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) Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.
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
Note (2) Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Note (3) * 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
Tilt Cylinder, Double Acting - Bore Diameter 5.9in
Tilt Cylinder, Double Acting - Rod Diameter 3.5in
Tilt Cylinder, Double Acting - Stroke 21.9in
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure 4351psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure 4061psi
Maximum Flow - Implement Pump - 4th Function Maximum Flow* 42gal/min
Maximum Flow - Implement Pump - 3rd Function Maximum Flow* 50gal/min

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).

Steering

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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
Maximum Flow - Steering Pump 34gal/min
Maximum Working Pressure - Steering Pump 3500psi
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).
Steering Cylinder, Double Acting - Bore Diameter 3.1in
Steering Cylinder, Double Acting - Rod Diameter 2in
Steering Cylinder, Double Acting - Stroke 15.7in

Power Train

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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 - Traction Aid - Optional Limited slip differential
Brakes - Parking Spring applied hydraulically released
Brakes - Service Outboard wet disc
Front Axle Fixed
Note (1) Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Note (2) Offset rims available to meet European roading requirements.
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.
Rear Axle Oscillating
Front Axle - Traction Aid* Locking differential (standard)

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 (2) 10 662 kg (23,504 lb)^
Full Turn Tip Load (1) 10 551 kg (23,260 lb)**
Note (2) ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires.
Note (1) **Aggregate Handler machine equipped with full counterweight and optional guards.