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938K Wheel Loader

Overview

The Cat® 938K 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 engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard.

938K Wheel Loader - Specifications

Engine
Maximum Gross Power
188 HP
140 kW
Engine Model
Cat® C7.1
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 HP
140 kW
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
646 lb/ft
876 N·m
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
653 lb/ft
886 N·m
Displacement (Performance Power Mode: Speed Range 1-4)
427 in³
7.01 l
Rated Net Power - 1,800 rpm - SAE J1349 (Performance Power Mode: Speed Range 1-4)
182 HP
136 kW
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
634 lb/ft
860 N·m
Displacement (Standard Power Mode: Speed Range 1-3*)
427 in³
7.01 l
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
660 lb/ft
896 N·m
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
641 lb/ft
870 N·m
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
140 kW
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
175 HP
129 kW
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
129 kW
Rated Net Power - 1,600 rpm - SAE J1349 (Standard Power Mode: Speed Range 1-3*)
169 HP
126 kW
Rated Net Power
182 HP
136 kW
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) (Performance Power Mode: Speed Range 1-4)
188 HP
138 kW
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) (Standard Power Mode: Speed Range 1-3*)
173 HP
127 kW
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
672 lb/ft
912 N·m
Emissions
Engine meets Tier 3/Stage IIIA equivalent emission standards.
Note
*Range 4 power is boosted to be the same as Performance Mode.
Weights
Operating Weight
34129 lb
15485 kg
Buckets
Bucket Capacities
2.5-3.2 m3 (3.2-4.2 yd3)
Bucket Capacities - General Purpose
2.5-3.2 m3 (3.2-4.2 yd3)
Bucket Capacities - Light Material
3.1-5.0 m3 (4.0-6.5 yd3)
Cab
ROPS
SAE J1040 MAY94, ISO 3471-1994
FOPS
SAE J/ISO 3449 APR98, Level II, ISO 3449 1992 Level II
Note (1)
Cab and Rollover Protective Structures (ROPS) are standard.
Note (2)
A semi-cab option is available.
Sound
Note (3)
The declared exterior sound power level is 104 dB(A) when the value is measured according to “ISO 6395:2008.”
Note (1)
Declared dynamic operator sound pressure level is 72 dB(A) when “ISO 6396:2008” is used to measure value for an enclosed cab.
Note (2)
The measurement was conducted at 70% of the maximum engine cooling fan speed, with the cab doors and cab windows closed.
Service Refill Capacities
Cooling System
8.5 gal (US)
32 l
Axles - Rear
9.2 gal (US)
35 l
Transmission - Gear Box
2.9 gal (US)
11 l
Hydraulic System - Including Tank
44.9 gal (US)
170 l
Hydraulic Tank
23.8 gal (US)
90 l
Engine Crankcase
5.2 gal (US)
19.5 l
Axles - Front
9.2 gal (US)
35 l
Fuel Tank
51.5 gal (US)
195 l
Loader Hydraulic System
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time
9.7 s
9.7 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height
1.5 s
1.5 s
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure
4061 psi
28000 kPa
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift
5.5 s
5.5 s
Note
*Adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift
6.2 s
6.2 s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
2.7 s
Relief Pressure - Tilt Cylinder
4351 psi
30000 kPa
Maximum Flow - Implement Pump - 3rd Function*
50 gal/min
190 l/min
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*
40 gal/min
150 l/min
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height
1.7 s
1.7 s
Relief Pressure - Tilt Cylinder - 4th Function Maximum Working Pressure
4061 psi
28000 kPa
Maximum Flow - Implement Pump
50 gal/min
190 l/min
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time
10.6 s
10.6 s
Maximum Working Pressure - Implement Pump
4061 psi
28000 kPa
Transmission
Forward and Reverse - Range 3
17 mile/h
27 km/h
Forward and Reverse - Range 1*
1-13 km/h (0.6-8 mph)
Notes
Factory default is 7 km/h (4.4 mph).
Note
*Creeper control allows max. speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the sec. display.
Forward and Reverse - Range 4
25 mile/h
40 km/h
Forward and Reverse - Range 2
8 mile/h
13 km/h
Tires
Other Choices Vary by Region (2)
20.5-25 12PR (L-2); Skidder/Agriculture; 20.5-25 12PR (L-3); Flexport™ Gen II
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.
Note (3)
Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Other Choices Vary by Region (1)
20.5 R25, radial (L-2); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 20.5 R25, radial (L-5); 650/65 R25 radial (L-3)
Note (1)
Other tire choices are available. Contact your Cat dealer for details.
Axles
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional in some regions)
Front
Fixed; Open differential (standard); Locking differential (optional)
Steering
Steering Articulation Angle - Each Direction
40°
Maximum Steering Torque - 0° (Straight Machine)
42506 lb/ft
57630 N·m
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left
3.1 turns
3.1 turns
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed
2.2 s
2.2 s
Maximum Working Pressure - Steering Pump
3500 psi
24130 kPa
Maximum Steering Torque - 40° (Full Turn)
31398 lb/ft
42570 N·m
Maximum Flow - Steering Pump
34 gal/min
130 l/min