938M Small Wheel Loader
The Cat 938M 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 ACERT engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard. Meets Tier 4 Final/Stage V emission standards with an environmentally friendly, Clean Emission Module designed to manage itself so you can concentrate on your work. Experience the new industry benchmark.
| Average Exterior Sound Pressure (ISO 6395:2008) | 101 dB(A) |
|---|---|
| Note (1) | European Union Directive “2000/14/EC” |
| Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) |
| Bucket Capacities | 2.5-5.0 m3 (3.2-6.5 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) |
| ROPS | ISO 3471:2008 |
| FOPS | ISO 3449:2008 Level II |
| 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) |
| 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. |
| Displacement (Performance Power Mode: Speed Range 1-4) | 7.01 l |
| Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4) | 140 kW |
| Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4) | 190 mhp |
| 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) | 900 N·m |
| Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) | 880 N·m |
| 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*) | 127 kW |
| 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*) | 870 N·m |
| Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) | 850 N·m |
| Emissions | O motor atende padrões de emissões do Final do Tier 4 do EPA (Environmental Protection Agency, Órgão de Proteção Ambiental) dos EUA/Estágio IV da UE. |
| Displacement (Standard Power Mode: Speed Range 1-3*) | 7.01 l |
| 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. |
| 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. |
| Note (4) | Desempenho do detentor de fagulhas conforme padrão – Atende aos requisitos de desempenho da norma EN 1834-1.2000 (seção 6.4.2 Teste Visual). |
| Maximum Gross Power | 140 kW |
| Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*) | 129 kW |
| Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*) | 176 mhp |
| Bore | 105 mm |
| Stroke | 135 mm |
| Displacement | 7.01 l |
| Engine Model | Cat C7.1 ACERT** |
| Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) | 1800 r/min |
| Maximum Rated Gross Power - ISO 14396 | 140 kW |
| Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | 137 kW |
| Rated Net Power - 1,600 rpm - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) | 127 kW |
| Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) | 137 kW |
| Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*) | 852 N·m |
| Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4) | 882 N·m |
| Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed | 2.3 s |
| Maximum Steering Torque - 40° (Full Turn) | 42570 N·m |
| 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 Articulation Angle - Each Direction | 40° |
| Steering Cylinder, Double Acting - Bore Diameter | 80 mm |
| Steering Cylinder, Double Acting - Rod Diameter | 50 mm |
| Steering Cylinder, Double Acting - Stroke | 399 mm |
| Maximum Working Pressure - Steering Pump | 24130 kPa |
| Maximum Steering Torque - 0° (Straight Machine) | 57630 N·m |
| Maximum Flow - Steering Pump | 130 l/min |
| Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left | 3.3 turns |
| Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift | 6.2 s |
| Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height | 1.7 s |
| Maximum Flow - Implement Pump - 4th Function Maximum Flow* | 160 l/min |
| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure | 28000 kPa |
| Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure | 30000 kPa |
| 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 segundos |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Dump (at Maximum Lift Height) | 1,5 /1,7 segundo |
| Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level | 2.7 s |
| Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time | 10.6 s |
| 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 segundos |
| Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time | 9,7 /10,6 segundo |
| Note (1) | *3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped. |
| 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 - Dump, at Maximum Lift Height | 1.5 s |
| Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level | 2.7 s |
| Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time | 9.7 s |
| Lift Cylinder, Double Acting - Bore Diameter | 120 mm |
| Lift Cylinder, Double Acting - Rod Diameter | 65 mm |
| Lift Cylinder, Double Acting - Stroke | 789 mm |
| Tilt Cylinder, Double Acting - Bore Diameter | 150 mm |
| Tilt Cylinder, Double Acting - Rod Diameter | 90 mm |
| Tilt Cylinder, Double Acting - Stroke | 555 mm |
| Relief Pressure - Tilt Cylinder | 30000 kPa |
| Maximum Flow - Implement Pump | 190 l/min |
| Maximum Working Pressure - Implement Pump | 28000 kPa |
| Maximum Flow - Implement Pump - 3rd Function Maximum Flow* | 190 l/min |
| Front Axles | 35 l |
| Rear Axles | 35 l |
| Transmission - Gear Box | 11 l |
| Diesel Exhaust Fluid (DEF) Tank | 19 l |
| Note | DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1. |
| Hydraulic Tank | 90 l |
| Fuel Tank | 195 l |
| Hydraulic System - Including Tank | 170 l |
| Engine Crankcase | 20 l |
| Cooling System | 32 l |
| Forward and Reverse - Range 1* | 1-13 km/h (0.6-8 mph) |
| Forward and Reverse - Range 2 | 13 km/h |
| Forward and Reverse - Range 3 | 27 km/h |
| Forward and Reverse - Range 4 | 40 km/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). |
| Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 | ± 10,5 graus |
| Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 | ± 7 graus |
| Rear Axle - Traction Aid - Optional | Diferencial de patinagem controlada |
| Front Axle | Fixo |
| Rear Axle | Oscilante |
| Brakes - Parking | Acionamento por mola liberado hidraulicamente |
| Brakes - Service | Disco em banho de óleo externo |
| 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. |
| 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); 23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Solid Tires |
| 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 of refrigerant which has a CO2 equivalent of 2.717 metric tonnes. |
| Full Turn Tip Load | 10028 kg |
| Operating Weight | 16229 kg |
