938M Small Wheel Loader
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.
Specifications
Equipment
Product Brochures
Attachments
Units:
Engine
Maximum Gross Power
188 HP
140 kW
Displacement (Standard Power Mode: Speed Range 1-3*)
427 in³
7.01 l
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600 r/min
1600 r/min
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
183 HP
137 kW
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
642 ft·lbf
870 N·m
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
176 mhp
176 mhp
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
649 ft·lbf
880 N·m
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
140 kW
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
172 mhp
172 mhp
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
627 ft·lbf
850 N·m
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186 mhp
186 mhp
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800 r/min
1800 r/min
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
664 ft·lbf
900 N·m
Displacement (Performance Power Mode: Speed Range 1-4)
427 in³
7.01 l
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 mhp
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
127 kW
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
129 kW
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
127 kW
Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*)
628 ft·lbf
852 N·m
Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184 HP
137 kW
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4)
650 ft·lbf
882 N·m
Buckets
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)
Weights
Operating Weight
35778 lb
16229 kg
Cab
ROPS
ISO 3471:2008
FOPS
ISO 3449:2008 Level II
Service Refill Capacities
Transmission - Gear Box
2.9 gal (US)
11 l
Engine Crankcase
5.3 gal (US)
20 l
Cab
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.
Loader Hydraulic System
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
5.5 s
Steering
Maximum Working Pressure - Steering Pump
3500 psi
24130 kPa
Transmission
Forward and Reverse - Range 3
17 mile/h
27 km/h
Loader Hydraulic System
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time
9.7 s
9.7 s
Steering
Steering Articulation Angle - Each Direction
40°
Sound
Note (1)
European Union Directive “2000/14/EC”
Service Refill Capacities
Hydraulic System - Including Tank
44.9 gal (US)
170 l
Rear Axles
9.2 gal (US)
35 l
Loader Hydraulic System
Relief Pressure - Tilt Cylinder
4351 psi
30000 kPa
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time
10.6 s
10.6 s
Service Refill Capacities
Front Axles
9.2 gal (US)
35 l
Steering
Maximum Flow - Steering Pump
34 gal/min
130 l/min
Loader Hydraulic System
Maximum Working Pressure - Implement Pump
4061 psi
28000 kPa
Tires
Note (1)
Other tire choices are available. Contact your Cat dealer for details.
Loader Hydraulic System
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure
4061 psi
28000 kPa
Tires
Standard Size
20.5 R25, radial (L-3)
Loader Hydraulic System
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height
1.7 s
1.7 s
Steering
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left
3.3 turns
3.3 turns
Loader Hydraulic System
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height
1.5 s
1.5 s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift
6.2 s
6.2 s
Tires
Note (2)
In certain applications, the loader’s productive capabilities may exceed the tire’s tonnes-km/h (ton-mph) capabilities.
Loader Hydraulic System
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
2.7 s
Maximum Flow - Implement Pump - 4th Function Maximum Flow*
42 gal/min
160 l/min
Transmission
Forward and Reverse - Range 4
25 mile/h
40 km/h
Service Refill Capacities
Diesel Exhaust Fluid (DEF) Tank
5 gal (US)
19 l
Loader Hydraulic System
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure
4351 psi
30000 kPa
Service Refill Capacities
Note
DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Axles
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)
Front
Fixed; Locking differential (standard)
Steering
Maximum Steering Torque - 0° (Straight Machine)
42506 ft·lbf
57630 N·m
Transmission
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).
Loader Hydraulic System
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
2.7 s
Tires
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
Service Refill Capacities
Hydraulic Tank
23.8 gal (US)
90 l
Cab
Note (1)
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
Service Refill Capacities
Fuel Tank
51.5 gal (US)
195 l
Steering
Maximum Steering Torque - 40° (Full Turn)
31398 ft·lbf
42570 N·m
Service Refill Capacities
Cooling System
7.9 gal (US)
32 l
Transmission
Forward and Reverse - Range 1*
1-13 km/h (0.6-8 mph)
Tires
Note (3)
Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Loader Hydraulic System
Maximum Flow - Implement Pump
50 gal/min
190 l/min
Steering
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed
2.3 s
2.3 s
Transmission
Forward and Reverse - Range 2
8 mile/h
13 km/h
Cab
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)
– Standard cab: 68 ±3 dB(A)
– Deluxe cab: 66 ±2 dB(A)
Air Conditioning System
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.
Sound
Average Exterior Sound Pressure (ISO 6395:2008)
101 dB(A)
101 dB(A)
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)
72 dB(A)
Loader Hydraulic System
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*
50 gal/min
190 l/min
Sustainability
Recyclability
94%
Standard Equipment
POWER TRAIN
HYDRAULICS
ELECTRICAL
OPERATOR ENVIRONMENT
OTHER STANDARD EQUIPMENT
EU STANDARD EQUIPMENT
