Wheel Loaders

938M Aggregate Handler Small Wheel Loader

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Specification Summary

Maximum Gross Power
188 HP
Operating Weight
36075 lb
Bucket Capacities
2.9-3.2 m3 (3.8-4.2 yd3)
Bore
4 in
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Engine

Engine Model
Cat® C7.1 ACERT™
Rated Net Power
182 HP
Maximum Rated Gross Power - ISO 14396
188 HP
Maximum Rated Gross Power - ISO 14396 (DIN)
190 HP
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800 r/min
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 HP
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
182 HP
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184 HP
Maximum Gross Power
188 HP
Bore
4 in
Stroke
5 in
Displacement
427 in³
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 arrester performance as standard – Meets the performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186 HP
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
648 ft·lbf
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
621 ft·lbf
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
628 ft·lbf
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600 r/min
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
175 HP
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
168 HP
Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
169 HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
171 HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
648 ft·lbf
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
621 ft·lbf
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
628 ft·lbf

Buckets

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

Weights

Operating Weight
36075 lb

Cab

ROPS
ISO 3471: 2008, FOPS: ISO 3449: 2005 LEVEL II
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 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 cl
Note (2)
The Blue Angel environmental label is an optional attachment for Europe only.

Loader Hydraulic System

Lift Cylinder, Double Acting - Bore Diameter
4.7 in
Lift Cylinder, Double Acting - Rod Diameter
2.6 in
Lift Cylinder, Double Acting - Stroke
31.1 in
Maximum Flow - Implement Pump
50 gal/min
Maximum Working Pressure - Implement Pump
4061 psi
Note (2)
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm)
Note (3)
* 3rd function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
Relief Pressure - Tilt Cylinder
4351 psi
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure
4061 psi
Relief Pressure - Tilt Cylinder - 3rd Function Relief Pressure
4351 psi
Tilt Cylinder, Double Acting - Bore Diameter
5.9 in
Tilt Cylinder, Double Acting - Rod Diameter
3.5 in
Tilt Cylinder, Double Acting - Stroke
21.9 in
Maximum Flow - Implement Pump - 3rd Function*
50 gal/min
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.

Operating Specifications

Full Turn Tip Load
23466 lb

Power Train

Brakes - Parking
Spring applied hydraulically released
Brakes - Service
Outboard wet disc
Front Axle
Fixed
Front Axle - Traction Aid**
Locking differential (standard)
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
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

Service Refill Capacities

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

Steering

Maximum Flow - Steering Pump
34 gal/min
Maximum Steering Torque - 0° (Straight Machine)
42506 ft·lbf
Maximum Working Pressure - Steering Pump
3500 psi
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
3.1 in
Steering Cylinder, Double Acting - Rod Diameter
2 in
Steering Cylinder, Double Acting - Stroke
15.7 in
Maximum Steering Torque - 40° (Full Turn)
31398 ft·lbf
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited
3.1 s
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed
2.3 s

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).
Forward and Reverse - Range 1*
1-13 km/h (0.6-8 mph)
Forward and Reverse - Range 2
8 mile/h
Forward and Reverse - Range 3
17 mile/h
Forward and Reverse - Range 4
25 mile/h
Engine Model
Cat® C7.1 ACERT™
Rated Net Power
182 HP
Maximum Rated Gross Power - ISO 14396
188 HP
Maximum Rated Gross Power - ISO 14396 (DIN)
190 HP
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800 r/min
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 HP
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
182 HP
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184 HP
Bucket Capacities
2.9-3.2 m3 (3.8-4.2 yd3)
Operating Weight
36075 lb
Maximum Gross Power
188 HP
Bore
4 in
Stroke
5 in
Displacement
427 in³
ROPS
ISO 3471: 2008, FOPS: ISO 3449: 2005 LEVEL II
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 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 cl
Note (2)
The Blue Angel environmental label is an optional attachment for Europe only.
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 arrester performance as standard – Meets the performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Lift Cylinder, Double Acting - Bore Diameter
4.7 in
Lift Cylinder, Double Acting - Rod Diameter
2.6 in
Lift Cylinder, Double Acting - Stroke
31.1 in
Maximum Flow - Implement Pump
50 gal/min
Maximum Working Pressure - Implement Pump
4061 psi
Note (2)
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm)
Note (3)
* 3rd function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.
Relief Pressure - Tilt Cylinder
4351 psi
Relief Pressure - Tilt Cylinder - 3rd Function Maximum Working Pressure
4061 psi
Relief Pressure - Tilt Cylinder - 3rd Function Relief Pressure
4351 psi
Tilt Cylinder, Double Acting - Bore Diameter
5.9 in
Tilt Cylinder, Double Acting - Rod Diameter
3.5 in
Tilt Cylinder, Double Acting - Stroke
21.9 in
Full Turn Tip Load
23466 lb
Brakes - Parking
Spring applied hydraulically released
Brakes - Service
Outboard wet disc
Front Axle
Fixed
Front Axle - Traction Aid**
Locking differential (standard)
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
Cooling System
8.5 gal (US)
Diesel Exhaust Fluid (DEF) Tank
5 gal (US)
Engine Crankcase
5.3 gal (US)
Fuel Tank
51.5 gal (US)
Hydraulic System - Including Tank
44.9 gal (US)
Hydraulic Tank
23.8 gal (US)
Transmission - Gear Box
2.9 gal (US)
Maximum Flow - Steering Pump
34 gal/min
Maximum Steering Torque - 0° (Straight Machine)
42506 ft·lbf
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186 HP
Maximum Working Pressure - Steering Pump
3500 psi
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
648 ft·lbf
Note (1)
Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
621 ft·lbf
Note (2)
Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
628 ft·lbf
Steering Cylinder, Double Acting - Bore Diameter
3.1 in
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600 r/min
Steering Cylinder, Double Acting - Rod Diameter
2 in
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
Steering Cylinder, Double Acting - Stroke
15.7 in
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
175 HP
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).
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
168 HP
Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
169 HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
171 HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
648 ft·lbf
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
621 ft·lbf
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
628 ft·lbf
Maximum Steering Torque - 40° (Full Turn)
31398 ft·lbf
Maximum Flow - Implement Pump - 3rd Function*
50 gal/min
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
Front Axles
9.2 gal (US)
Rear Axles
9.2 gal (US)
Forward and Reverse - Range 1*
1-13 km/h (0.6-8 mph)
Forward and Reverse - Range 2
8 mile/h
Forward and Reverse - Range 3
17 mile/h
Forward and Reverse - Range 4
25 mile/h
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.
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited
3.1 s
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed
2.3 s
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