938 Small Wheel Loader

Overview

Cat^® wheel loaders set the standard for productivity, fuel efficiency, operator comfort and low operating costs. The Cat 938 Small Wheel Loader features a high torque C7.1 engine that works in conjunction with an intelligent hydrostatic power train to deliver exceptional fuel efficiency. Meets U.S. EPA Tier 4 Final and EU Stage V emission standards, designed to manage itself so you can concentrate on your work. Extended service intervals to 1000 hours reduce fluid and filter use by up to 45% (compared to previous M Series models) while keeping operating cost low.

Key Features

More Comfort. More Performance. More Versatility.

AUTO ENGINE MODE

Reduces fuel consumption at low idle.

Extended Service Intervals

From 500 to 1000 hours, substantially lowers service costs.

AUTO WHEEL TORQUE

Adjusts rim pull, reducing tire spin and tire wear.

Media Gallery

Specifications

Rated Gross Power - SAE J1995	191 hp
Engine Model	Cat C7.1*
Performance Mode	Automatic
Rated Gross Power - Rated Engine Speed	1800 r/min
Rated Gross Power - SAE J1995 (DIN)	194 mhp
Rated Engine Power - ISO 14396	188 hp
Rated Engine Power - ISO 14396 (DIN)	191 mhp
Rated Net Power - SAE J1349 at Minimum Fan Speed	185 hp
Rated Net Power - ISO 9249 at Minimum Fan Speed	185 hp
Rated Net Power - ISO 9249 (DIN) at Minimum Fan Speed	188 mhp
Maximum Gross Torque - Engine Speed	1400 r/min
Maximum Gross Torque - SAE J1995	673 ft·lbf
Maximum Gross Torque - ISO 14396	664 ft·lbf
Maximum Net Torque - SAE J1349	656 ft·lbf
Maximum Net Torque - ISO 9249	658 ft·lbf
Displacement	427 in³
Bore	4 in
Stroke	5 in
Note	*Meets U.S EPA Tier 4 Final, EU Stage V off-highway, and Japan 2014 emission standards.
Note (1)	Advertised power is tested per the specified standard in effect at the time of manufacture
Note (2)	Net power ratings are tested at the reference conditions for the specified standard and denote power available at the flywheel when 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.

Operating Weight	35528 lb
Operating Weight - High Lift	36210 lb

Bucket Capacities	1.9-5.0 m3 (2.5-6.5 yd3)

Steering Cylinder - Bore Diameter	3.1 in
Steering Cylinder - Rod Diameter	2 in
Steering Cylinder - Stroke	15.7 in
Maximum Flow - Steering Pump	34 gpm
Maximum Working Pressure - Steering Pump	3500 psi
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

Maximum Flow - Implement Pump	50 gpm
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*	50 gpm
Maximum Flow - Implement Pump - 4th Function Maximum Flow*	42 gpm
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: Standard Lift Linkage - Bore Diameter	4.7 in
Lift Cylinder: Standard Lift Linkage - Rod Diameter	2.6 in
Lift Cylinder: Standard Lift Linkage - Stroke	31.1 in
Tilt Cylinder: Standard Lift Linkage - Bore Diameter	5.9 in
Tilt Cylinder: Standard Lift Linkage - Rod Diameter	3.5 in
Tilt Cylinder: Standard Lift Linkage - Stroke	21.9 in
Hydraulic Cycle Time - Raise, Ground Level to Maximum Lift	5.5 s
Hydraulic Cycle Time - Dump (at Maximum Lift Height)	1.5 s
Hydraulic Cycle Time - Float Down, Maximum Lift to Ground Level	2.7 s
Hydraulic Cycle Time - Total Cycle Time	9.7 s
Note	*3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped.

Fuel Tank	51.5 gal (US)
Cooling System	7.9 gal (US)
Engine Crankcase	5.3 gal (US)
Transmission - Gear Box	2.2 gal (US)
Front Axles	9.2 gal (US)
Rear Axles	9.2 gal (US)
Hydraulic System - Including Tank	4.93 gal (US)
Hydraulic Tank	23.8 gal (US)
Diesel Exhaust Fluid (DEF) Tank	5 gal (US)
Note	DEF used in Cat systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1:2019.

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).

Standard Size	20.5 R25, radial (L-3)
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), 17.5 R25, radial (L-2), 17.5 R25, radial (L-3), 17.5 R25, radial (L-5), 550/65 R25 radial (L-3), Skidder/Agriculture
Note (1)	Other tire choices are available. Contact your Cat dealer for details.
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.

ROPS	ISO 3471:2008
FOPS	ISO 3449:2005 LEVEL II

Front	Fixed; Locking differential (standard)
Rear	Oscillating ± 11 degrees; Open differential (standard); Limited slip differential (optional)

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 (4.2 lb) of refrigerant which has a CO2 equivalent of 2.717 metric tonnes (2.99 tons).

Operator Sound Pressure (ISO 6396:2008)	68 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	101 dB(A)
Note (1)	European Union Directive 2000/14/EC and UK Noise Regulation 2001 No. 1701.

Recyclability	96%

Height - Ground to Cab**	10.92 ft
Height - Ground to Beacon**	12.17 ft
Height - Ground to Axle Center**	2.25 ft
Height - Ground Clearance**	1.25 ft
Length - Overall*	25.08 ft
Length - Rear Axle to Bumper	6.42 ft
Length - Hitch to Front Axle	5 ft
Length - Wheel Base	10 ft
Clearance - Bucket at 45°*	9.3 ft
Clearance - Load over Height**	11 ft
Clearance - Level Bucket**	11.9 ft
Height - Bucket Pin**	13 ft
Height - Overall**	17.33 ft
Reach - Bucket at 45°*	3.75 ft
Carry Height - Bucket Pin	1.33 ft
Dig Depth**	4 in
Width - Bucket	9 ft
Width - Tread Center	6.83 ft
Turning Radius - Over Bucket	20.08 ft
Width - Over Tires	8.83 ft
Turning Radius - Outside of Tires	18.16 ft
Turning Radius - Inside of Tires	9.33 ft
Rack Angle at Full Lift	54 °
Dump Angle at Full Lift	49 °
Rack Angle at Carry	43 °
Departure Angle	33 °
Articulation Angle	40 °
Operating Weight	35528 lb
Note (1)	*Vary with bucket.
Note (2)	**Vary with tire.
Note (3)	Dimensions listed are for a machine configured with 2.5 m³ (3.2 yd³) general purpose Fusion™ bucket, bolt-on cutting edge, standard counterweights, additional guarding, 80 kg (176 Ib) operator and 20.5 R25 (L-3) XHA2 tires.

Height - Ground to Cab**	10.92 ft
Height - Ground to Beacon**	12.17 ft
Height - Ground to Axle Center**	2.25 ft
Height - Ground Clearance**	1.25 ft
Length - Overall*	27.58 ft
Length - Rear Axle to Bumper	6.42 ft
Length - Hitch to Front Axle	5 ft
Length - Wheel Base	10 ft
Clearance - Bucket at 45°*	11.16 ft
Clearance - Load over Height**	11.66 ft
Clearance - Level Bucket**	13.83 ft
Height - Bucket Pin**	14.92 ft
Height - Overall**	19.2 ft
Reach - Bucket at 45°*	4.66 ft
Carry Height - Bucket Pin	2 ft
Dig Depth**	5.25 in
Width - Bucket	9 ft
Width - Tread Center	6.83 ft
Turning Radius - Over Bucket	21.25 ft
Width - Over Tires	8.83 ft
Turning Radius - Outside of Tires	18.16 ft
Turning Radius - Inside of Tires	9.33 ft
Rack Angle at Full Lift	53 °
Dump Angle at Full Lift	47 °
Rack Angle at Carry	48 °
Departure Angle	33 °
Articulation Angle	40 °
Operating Weight	36210 lb
Note (1)	*Vary with bucket.
Note (2)	**Vary with tire.
Note (3)	Dimensions listed are for a machine configured with 2.5 m³ (3.2 yd³) general purpose Fusion™ bucket, bolt-on cutting edge, standard counterweights, additional guarding, 80 kg (176 Ib) operator and 20.5 R25 (L-3) XHA2 tires.