938M Small Wheel Loader

Engine

Maximum Gross Power

188 hp

Maximum Rated Gross Power: ISO 14396

188 hp

Rated Net Power

182 hp

Maximum Rated Gross Power: ISO 14396 (DIN)

190 hp

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

Engine Model

Cat® C7.1 ACERT™

Rated Net Power at 1,800 rpm – ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)

184 hp

Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)

1800 r/min

Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)

183 hp

Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)

186 mhp

Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)

664 ft·lbf

Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)

649 ft·lbf

Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)

1600 r/min

Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

170 hp

Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

172 mhp

Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)

642 ft·lbf

Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)

627 ft·lbf

Displacement (Standard Power Mode: Speed Range 1-3*)

427 in³

Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)

176 mhp

Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)

188 hp

Displacement (Performance Power Mode: Speed Range 1-4)

427 in³

Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)

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**

Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)

173 hp

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.

Maximum Gross Power

188 hp

Bore

4 in

Stroke

5 in

Displacement

427 in3

Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)

628 lbf-ft

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 at 1,600 rpm – ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)

169 hp

Maximum Net Torque – ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)

628 lbf-ft

Emissions

Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.

Note

* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.

Note

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

No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.

Note

Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).

Buckets

Bucket Capacities

2.5-5.0 m3 (3.2-6.5 yd3)

Bucket Capacities

2.5-5.0 m3 (3.3-6.5 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

36216 lb

Operating Weight

35778 lb

Cab

ROPS

ISO 3471: 2008

ROPS

ISO 3471:2008

FOPS

ISO 3449: 2005 LEVEL II

FOPS

ISO 3449:2008 Level II

Note

Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab

Note

* 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.

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.

Note (1)

Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

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)

Steering

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 Flow – Steering Pump

34 gal/min

Maximum Working Pressure – Steering Pump

3500 psi

Maximum Steering Torque – 0° (Straight Machine)

42506 lbf-ft

Maximum Steering Torque - 40° (Full Turn)

31398 ft·lbf

Steering Cycle Times (Full Left to Full Right) – Minimum RPM: Pump Flow Limited

3.1 seconds

Steering Cycle Times (Full Left to Full Right) – Maximum RPM: 90 rpm Steering Wheel Speed

2.3 seconds

Note

Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.

Note

Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).

Maximum Working Pressure - Steering Pump

3500 psi

Steering Articulation Angle - Each Direction

40°

Maximum Flow - Steering Pump

34 gal/min

Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left

3.3 turns

Maximum Steering Torque - 0° (Straight Machine)

42506 ft·lbf

Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed

2.3 s

Loader Hydraulic System

Maximum Flow – Implement Pump

50 gal/min

Maximum Flow – Implement Pump: 3rd Function Maximum Flow*

50 gal/min

Maximum Flow - Implement Pump - 4th Function Maximum Flow*

42 gal/min

Maximum Working Pressure – Implement Pump

4061 psi

Relief Pressure – Tilt Cylinder

4351 psi

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure

4061 psi

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure

4351 psi

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

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

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

Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder.

Note

Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift

5.5 s

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time

9.7 s

Relief Pressure - Tilt Cylinder

4351 psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time

10.6 s

Maximum Working Pressure - Implement Pump

4061 psi

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height

1.7 s

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height

1.5 s

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift

6.2 s

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level

2.7 s

Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level

2.7 s

Maximum Flow - Implement Pump

50 gal/min

Service Refill Capacities

Fuel Tank

51.5 gal

Cooling System

8.5 gal

Engine Crankcase

5.3 gal

Transmission (Gear Box)

2.9 gal

Front Axles

9.2 gal (US)

Rear Axles

9.2 gal (US)

Hydraulic System (Including Tank)

44.9 gal

Hydraulic Tank

23.8 gal

Diesel Exhaust Fluid (DEF) Tank

5.0 gal

Transmission - Gear Box

2.9 gal (US)

Engine Crankcase

5.3 gal (US)

Hydraulic System - Including Tank

44.9 gal (US)

Diesel Exhaust Fluid (DEF) Tank

5 gal (US)

Note

DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.

Hydraulic Tank

23.8 gal (US)

Fuel Tank

51.5 gal (US)

Cooling System

7.9 gal (US)

Transmission

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

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).

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).

Operating Specifications

Full Turn Tip Load

22107 lb

Power Train

Front Axle

Fixed

Front Axle: Traction Aid (standard)

Locking differential

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: Oscillation Angle by Tire Size – Solid Tires, 750/65, 620/65, Skidder

± 7 degrees

Rear Axle: Traction Aid (optional)

Limited slip differential

Brakes: Service

Outboard wet disc

Brakes: Park

Spring applied hydraulically released

Note

Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.

Note

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

Offset rims available to meet European roading requirements.

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.

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.

Sustainability

Recyclability

94%

Sound

Note (1)

European Union Directive “2000/14/EC”

Tires

Note (1)

Other tire choices are available. Contact your Cat dealer for details.

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.

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

Note (3)

Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.

Axles

Rear

Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)

Front

Fixed; Locking differential (standard)