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 938M Aggregate Handler Small Wheel Loader |
 990 Wheel Loader |
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Engine |
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| Maximum Gross Power | 188 HP | - | - |
| Bore | 4 in | 5.4 in | - |
| Stroke | 5 in | 6 in | - |
| Displacement | 427 in³ | 1649.5 in³ | - |
| Maximum Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) | 188 HP | - | - |
| Maximum Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) | 1800 r/min | - | - |
| Maximum Rated Gross Power - ISO 14396 | 188 HP | - | - |
| Maximum Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) | 1600 r/min | - | - |
| Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) | 649 ft·lbf | - | - |
| Note (3) | No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems. | - | - |
| 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. | - | - |
| Maximum Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) | 173 HP | - | - |
| Emissions | The Cat C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 4 Final emission standards. | U.S. EPA TIer 4 Final and EU Stage V emission standards or U.S. EPA Tier 2 and EU Stage II equivalent | - |
| Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) | 627 ft·lbf | - | - |
| Maximum Net Torque - ISO 9249 (Performance Power Mode: Range 1-4) | 650 ft·lbf | - | - |
| Net Power - ISO 9249 (metric) at Minimum Fan Speed (Performance Power Mode: Range 1-4) | 186 HP | - | - |
| Net Power - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | 184 HP | - | - |
| Maximum Gross Power - ISO 14396 (metric) (Performance Power Mode: Range 1-4) | 190 HP | - | - |
| Net Power - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | 183 HP | - | - |
| Net Power - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | 170 HP | - | - |
| Net Power (Standard Power Mode: Range 1-3*) | 1600 r/min | - | - |
| Maximum Gross Power - ISO 14396 (metric) (Standard Power Mode: Range 1-3*) | 176 HP | - | - |
| Net Power (Performance Power Mode: Range 1-4) | 1800 r/min | - | - |
| Maximum Rated Gross Power - ISO 14396 (metric) | 190 HP | - | - |
| Net Power - ISO 9249 (metric) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | 172 HP | - | - |
| Maximum Net Torque - ISO 9249 (Standard Power Mode: Range 1-3*) | 628 ft·lbf | - | - |
| Net Power - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | 170 HP | - | - |
| Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) | 664 ft·lbf | - | - |
| Engine Model | Cat® C7.1 | C27 Cat® | - |
| Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) | 642 ft·lbf | - | - |
| Rated Speed | - | 1,800/min | - |
| Engine Power - ISO 14396 | - | 752 HP | - |
| Gross Power - SAE J1995 | - | 766 HP | - |
| Net Power - SAE J1349 - Standard Ambient | - | 699 HP | - |
| Net Power - SAE J1349 - High Ambient | - | 648 HP | - |
| Peak Torque - 1,200 rpm | - | 2624 lb/ft | - |
| Torque Rise | - | 18 % | - |
Weights |
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| Operating Weight | 36839 lb | - | - |
| Note (2) | ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. | - | - |
| Note (1) | **Aggregate Handler machine equipped with full counterweight and optional guards. | - | - |
| Operating Weight (2) | 16 710 kg (36,839 lb)^ | - | - |
| Operating Weight (1) | 16 199 kg (35,712 lb)** | - | - |
Buckets |
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| Bucket Capacities | 2.9-5.0 m3 (3.8-6.5 yd3) | 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) | - |
Cab |
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| ROPS | ISO 3471:2008 | - | - |
| Note (1) | * 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. | - | - |
| FOPS | ISO 3449:2005 LEVEL II | - | - |
| Declared Sound Levels | Declared Sound Levels – Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)* – Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)* |
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Steering |
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| Maximum Flow - Steering Pump | 34 gal/min | - | - |
| 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 | - | - |
| 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 | - | - |
| Note (1) | Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders. | - | - |
| Maximum Working Pressure - Steering Pump | 3500 psi | - | - |
| Note (2) | Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). | - | - |
Loader Hydraulic System |
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| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure | 4351 psi | - | - |
| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure | 4061 psi | - | - |
| 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. | - | - |
| Tilt Cylinder, Double Acting - Bore Diameter | 5.9 in | - | - |
| Relief Pressure - Tilt Cylinder | 4351 psi | - | - |
| 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 - Total Cycle Time | 9.7/10.6 seconds | - | - |
| Tilt Cylinder, Double Acting - Rod Diameter | 3.5 in | - | - |
| Maximum Flow - Implement Pump | 50 gal/min | - | - |
| Note (2) | Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). | - | - |
| 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 | - | - |
| Maximum Flow - Implement Pump - 4th Function Maximum Flow* | 42 gal/min | - | - |
| Note (3) | * 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped. | - | - |
| Lift Cylinder, Double Acting - Stroke | 31.1 in | - | - |
| Maximum Working Pressure - Implement Pump | 4061 psi | - | - |
| Lift Cylinder, Double Acting - Bore Diameter | 4.7 in | - | - |
| 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 | - | - |
| Lift Cylinder, Double Acting - Rod Diameter | 2.6 in | - | - |
| Maximum Flow - Implement Pump - 3rd Function Maximum Flow* | 50 gal/min | - | - |
Service Refill Capacities |
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| Rear Axles | 9.2 gal (US) | - | - |
| Hydraulic System - Including Tank | 44.9 gal (US) | - | - |
| Hydraulic Tank | 23.8 gal (US) | - | - |
| Diesel Exhaust Fluid (DEF) Tank | 5 gal (US) | - | - |
| Engine Crankcase | 5.3 gal (US) | 20 gal (US) | - |
| Cooling System | 8.5 gal (US) | 54.9 gal (US) | - |
| Front Axles | 9.2 gal (US) | - | - |
| Transmission - Gear Box | 2.9 gal (US) | - | - |
| Fuel Tank | 51.5 gal (US) | 294.3 gal (US) | - |
| Transmission | - | 29.1 gal (US) | - |
| Differential - Final Drives - Front | - | 71.6 gal (US) | - |
| Differential - Final Drives - Rear | - | 68.9 gal (US) | - |
| Hydraulic System Factory Fill | - | 210 gal (US) | - |
| Hydraulic Tank - Implement and Hydraulic Fan | - | 68.9 gal (US) | - |
| Hydraulic Tank - Steering and Braking | - | 34.9 gal (US) | - |
| Note | - | All nonroad U.S. EPA Tier 4 diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. Biodiesel blends up to B20 (20% blend by volume) are acceptable when blended with 15 ppm (mg/kg) sulfur or l | - |
Power Train |
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| Brakes - Parking | Spring applied hydraulically released | - | - |
| Rear Axle - Traction Aid - Optional | Limited slip differential | - | - |
| Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 | ± 7 degrees | - | - |
| Rear Axle | Oscillating | - | - |
| Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 | ± 10.5 degrees | - | - |
| Note (2) | Offset rims available to meet European roading requirements. | - | - |
| Note (1) | Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency. | - | - |
| Brakes - Service | Outboard wet disc | - | - |
| 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. | - | - |
| Front Axle | Fixed | - | - |
| Front Axle - Traction Aid* | Locking differential (standard) | - | - |
Transmission |
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| 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). | Travel speeds based on Michelin 45/65R39 LD D2**L5 tires. | - |
| 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 | - | - |
| Transmission Type | - | Cat planetary power shift | - |
| Forward - 1 | - | 4.5 mile/h | - |
| Forward - 2 | - | 8.3 mile/h | - |
| Forward - 3 | - | 14.2 mile/h | - |
| Reverse - 1 | - | 4.9 mile/h | - |
| Reverse - 2 | - | 9.1 mile/h | - |
| Reverse - 3 | - | 15.5 mile/h | - |
| Direct Drive - Forward 1 | - | Lock-up disabled | - |
| Direct Drive - Forward 2 | - | 8.5 mile/h | - |
| Direct Drive - Forward 3 | - | 15.2 mile/h | - |
| Direct Drive - Reverse 1 | - | 5.4 mile/h | - |
| Direct Drive - Reverse 2 | - | 9.6 mile/h | - |
| Direct Drive - Reverse 3 | - | 16.4 mile/h | - |
Air Conditioning System |
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| 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. | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.7 kg of refrigerant which has a CO2 equivalent of 3.861 metric tonnes (4.256 tons). | - |
Sustainability |
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| Recyclability | 94% | - | - |
Operating Specifications |
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| Full Turn Tip Load (2) | 10 662 kg (23,504 lb)^ | - | - |
| Full Turn Tip Load (1) | 10 551 kg (23,260 lb)** | - | - |
| Note (2) | ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. | - | - |
| Note (1) | **Aggregate Handler machine equipped with full counterweight and optional guards. | - | - |
| Operating Weight | - | 178517 lb | - |
| Rated Payload - Standard | - | 17.5 ton (US) | - |
| Rated Payload - High Lift | - | 17.5 ton (US) | - |
| Bucket Capacity Range | - | 8.6 m³ – 10.0 m³ (11.25 yd³ – 13.0 yd³) | - |
| Cat Truck Match - Standard | - | 773-775 | - |
| Cat Truck Match - High Lift | - | 775-777 | - |
Hydraulic System - Lift/Tilt |
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| Lift/Tilt System - Circuit | - | Positive flow control | - |
| Lift/Tilt System | - | Variable displacement piston | - |
| Maximum Flow at 1,800 rpm (1) | - | 240 gal/min | - |
| Cylinders, Double Acting - Lift, Bore and Stroke | - | 235 mm × 1287 mm (9.3 in × 50.7 in) | - |
| Cylinders, Double Acting - Tilt, Bore and Stroke | - | 292.1 mm × 820 mm (11.5 in × 32.3 in) | - |
| Pilot System | - | Open loop and pressure reducing | - |
| Relief Valve Setting - Main | - | 507 psi | - |
| Relief Valve Setting - Lift/Tilt | - | 4786 psi | - |
Hydraulic Cycle Times |
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| Rack Back | - | 4.3 s | - |
| Raise | - | 8.2 s | - |
| Dump | - | 2.9 s | - |
| Lower | - | 3.7 s | - |
| Lower Float Down | - | 3.6 s | - |
| Total Hydraulic Cycle Time - Empty Bucket | - | 13.8 s | - |
Hydraulic System - Steering |
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| Steering System - Circuit | - | Pilot, load sensing | - |
| Steering System - Pump | - | Piston, variable displacement | - |
| Maximum Flow at 1,400 rpm | - | 96.2 gal/min | - |
| Relief Valve Setting - Steering | - | 5004 psi | - |
| Total Steering Angle | - | 70° | - |
Axles |
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| Front | - | Fixed | - |
| Rear | - | Trunnion | - |
| Oscillation Angle | - | 8.5° | - |
Brakes |
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| Brakes | - | ISO 3450: 2011 | - |
Sound Performance - Standard |
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| Operator Sound Level (ISO 6396:2008) | - | 65.5 dB(A) | - |
| Machine Sound Level (ISO 6395:2008) | - | 115 dB(A) | - |
Sound Performance - Suppression |
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| Operator Sound Level (ISO 6396:2008) | - | 65.5 dB(A) | - |
| Machine Sound Level (ISO 6395:2008) | - | 113 dB(A) | - |
