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The 1998 Ingersoll Rand roller, typified by models such as the SD-70 series or DD70, represents a reliable and robust piece of compaction equipment widely used in construction, road building, and earthworks. Designed to deliver efficient soil and asphalt compaction, these rollers combine solid engineering with operator comfort and versatile performance.
Key Specifications and Physical Dimensions
During a mid-1990s highway rehabilitation project, operators appreciated the 1998 Ingersoll Rand SD-70D’s balance of power and operator comfort. Its dual amplitude vibration allowed the team to adjust settings while transitioning from dense asphalt layers to thicker soil lifts, optimizing compaction and saving rework time. The easy drum conversion kit enabled rapid shift to padfoot drums when encountering clay-rich soils. Maintenance was streamlined by accessible engine compartments, reducing downtime and extending equipment life.
Practical Tips and Recommendations
Key Specifications and Physical Dimensions
- Model Variants: Common 1998 Ingersoll Rand rollers include SD-70D, SD-70F, and DD70 vibratory double drum rollers.
- Operating Weight: Approximately 15,500 to 17,800 pounds (7,030 to 8,060 kg), varying by model and options.
- Drum Width: 66 inches (1676 mm), offering substantial ground contact area for effective compaction.
- Drum Diameter: 48 inches (1219 mm) with drum shell thickness around 0.88 inches (22 mm).
- Drum Types: Available in smooth or padfoot drums, with optional clamp-on padfoot shell kits to convert smooth drums without hydraulic changes.
- Machine Dimensions: Length around 199 inches (5,044 mm), Width about 72 inches (1,830 mm), and Height approximately 115 to 116 inches (2,922 to 2,955 mm) to top of ROPS or FOPS.
- Engine: Typically powered by a Cummins B4.5T turbocharged 4-cylinder diesel engine meeting Tier 2 emissions.
- Power Output: Approximately 99 horsepower (74 kW) at 2,200 rpm.
- Cooling System: Rear-mounted for easy maintenance with accessible cleaning.
- Drive System: Hydrostatic, featuring a two-speed motor on a planetary axle equipped with No-Spin® differential, enhancing traction and mobility.
- Travel Speed: Up to around 9 mph (14.5 km/h) in high range, with a lower range around 4.1 mph (6.5 km/h) for fine control during compaction.
- Vibration Frequency: Around 1,850 to 2,025 vibrations per minute (30.8 to 33.8 Hz).
- Centrifugal Force: High setting approximately 32,100 lbs (143 kN), low setting near 23,300 lbs (104 kN) for flexibility depending on soil type and project needs.
- Amplitude: Around 0.066 to 0.078 inches (1.68 to 1.98 mm) nominal amplitude, enabling effective compaction depth control.
- Cabin: Options range from ROPS (Roll-Over Protective Structure) to EROPS with heat and air conditioning packages for operator comfort.
- Controls: Ergonomic, lockable control panels and engine cover provide ease of access and security.
- Seating: Premium adjustable suspension seat with armrests to reduce operator fatigue.
- Visibility and Safety: Includes skid-resistant decks, handrails, back-up alarms, emergency stops, and horn.
- Instrumentation: Gauges for coolant temperature, fuel, engine oil pressure, hydraulic oil temperature, and voltmeter to keep operators informed.
- Engine Access: One-piece rear-hinged engine cover allows complete access to engine components and hydraulic systems.
- Hydraulic Oil Capacity: About 22 gallons (84 liters) with sight gauges for easy monitoring.
- Fuel Capacity: Approximately 47 gallons (178 liters), providing long operation periods.
- Braking System: Spring-applied, hydraulically released on axles and drum drive motors ensures safe operation.
- Routine Checks Recommendations: Regular inspection of hydraulic fluid levels, engine oil, filters, and belts; keep drums clean and check scrapers to prevent material buildup.
- Padfoot Shell Kit: A two-piece, clamp-on padfoot shell kit allows quick conversion from smooth drum to padfoot for cohesive soil work without modifying hydraulics.
- Strike-off Blade: Useful in padfoot configurations to smooth material during compaction.
- Lighting Package: Work lights mounted on ROPS/FOPS enhance night or low-light operation.
- Beacon Lights: Rotating beacon for safety and visibility onsite.
- Battery Master Switch and Cold Start Aids: Help in electrical system management and reliable starting in cold weather.
- Hydrostatic Drive: A transmission system using fluid pressure for power transfer, enabling smooth speed and direction changes.
- No-Spin Differential: A mechanism preventing wheels from spinning independently to maintain traction, especially on slippery surfaces.
- Padfoot Drum: A drum with raised pad “feet” used for compacting cohesive soils by kneading action.
- Amplitude: The height of vibration displacement affecting compaction force.
- Centrifugal Force: Outward force helping the roller's vibration penetrate the soil for densification.
- ROPS/FOPS: Safety structures protecting the operator during rollovers or falling objects.
During a mid-1990s highway rehabilitation project, operators appreciated the 1998 Ingersoll Rand SD-70D’s balance of power and operator comfort. Its dual amplitude vibration allowed the team to adjust settings while transitioning from dense asphalt layers to thicker soil lifts, optimizing compaction and saving rework time. The easy drum conversion kit enabled rapid shift to padfoot drums when encountering clay-rich soils. Maintenance was streamlined by accessible engine compartments, reducing downtime and extending equipment life.
Practical Tips and Recommendations
- Maintain clean cooling systems to prevent overheating, especially when operating in dusty environments.
- Regularly check and replace hydraulic oil and filters to ensure steady drum vibration and drive functionality.
- Inspect padfoot drums and shells for wear and replace clamp-on pads timely to maintain compaction efficiency.
- Adjust vibration amplitude according to soil type; high amplitude for granular soils, low amplitude for sensitive or thin materials.
- Use walk-around inspections to monitor for loose bolts, hydraulic leaks, and tire condition.
- Employ backup alarms and beacon lights consistently for enhanced site safety.
- Engine: Cummins B4.5T turbocharged 4-cylinder, ~99 hp
- Weight: 15,500–17,800 lbs operating weight
- Drum Size: 66 in width × 48 in diameter
- Vibration Frequencies: 1,850–2,025 VPM; centrifugal force up to 32,100 lbs
- Hydrostatic two-speed drive with No-Spin differential
- Optional padfoot shell conversion kit
- Operator comfort features include adjustable seats and climate control options
- Safety features: ROPS/FOPS, alarms, and lights
- Service friendly with easy engine access and hydraulic sight gauges
