| 1 | Compact Fiber Micro-Rig | 10,000–15,000 lbf (44–67 kN) | 1,500–3,000 ft·lbf (2,000–4,100 N·m) | 0–220 rpm | 2–4 in (50–100 mm) | Fiber-optic conduit, communications duct, small service lines | Short urban crossings, narrow easements, landscaped areas, and soft to moderately firm soil |
| 2 | Mini Utility Entry Rig | 15,000–20,000 lbf (67–89 kN) | 2,500–4,500 ft·lbf (3,400–6,100 N·m) | 0–200 rpm | 2–6 in (50–150 mm) | Fiber bundles, low-voltage conduit, residential water services | Residential streets, driveways, sidewalks, and crossings where a small footprint is important |
| 3 | Light-Duty Utility Rig | 20,000–30,000 lbf (89–133 kN) | 4,000–7,000 ft·lbf (5,400–9,500 N·m) | 0–180 rpm | 4–8 in (100–200 mm) | Multiple fiber ducts, small gas services, irrigation and water lines | Longer residential crossings and mixed soils with moderate pullback requirements |
| 4 | Mid-Size Municipal Rig | 30,000–40,000 lbf (133–178 kN) | 6,000–10,000 ft·lbf (8,100–13,600 N·m) | 0–150 rpm | 6–12 in (150–300 mm) | Gas distribution, potable-water mains, sewer laterals, and telecom duct banks | Road, rail, and parking-lot crossings with moderate length and changing soil conditions |
| 5 | Standard Utility Production Rig | 40,000–60,000 lbf (178–267 kN) | 8,000–15,000 ft·lbf (10,800–20,300 N·m) | 0–130 rpm | 8–16 in (200–400 mm) | Medium-diameter gas, water, sewer, and bundled conduit installations | Long urban or suburban crossings, dense clay, cobble zones, and variable formation conditions |
| 6 | High-Torque Utility Rig | 60,000–80,000 lbf (267–356 kN) | 12,000–20,000 ft·lbf (16,300–27,100 N·m) | 0–120 rpm | 12–20 in (300–500 mm) | Large gas mains, water transmission lines, and heavy multi-duct installations | Long crossings, stiff clay, gravel, weathered rock, and installations requiring several reaming passes |
| 7 | Rock-Capable Utility Rig | 80,000–100,000 lbf (356–445 kN) | 18,000–30,000 ft·lbf (24,400–40,700 N·m) | 0–100 rpm | 16–24 in (400–600 mm) | Water mains, gas transmission laterals, and utility crossings through rock or cemented soils | High torque demand, fluid-assisted rock drilling, long crossings, and heavy tooling packages |
| 8 | Large Pipeline Installation Rig | 100,000–150,000 lbf (445–667 kN) | 25,000–45,000 ft·lbf (33,900–61,000 N·m) | 0–80 rpm | 20–30 in (500–750 mm) | Large-diameter water lines, gas pipelines, and industrial process piping | Long crossings with high pullback loads, large reamers, deep profiles, and difficult bore alignment |
| 9 | Heavy Pipeline Bore Rig | 150,000–200,000 lbf (667–890 kN) | 40,000–65,000 ft·lbf (54,200–88,100 N·m) | 0–70 rpm | 24–36 in (600–900 mm) | Transmission gas, large water conveyance, and industrial pipeline crossings | Very long bores, high product-pipe weight, difficult geology, and substantial drilling-fluid demand |
| 10 | Ultra-Heavy Interceptor Rig | 200,000–400,000 lbf (890–1,780 kN) | 60,000–100,000 ft·lbf (81,400–135,600 N·m) | 0–50 rpm | 30–48 in (750–1,200 mm) | Major pipeline installations, river crossings, large transmission mains, and critical infrastructure | Long, deep crossings with high buoyancy, large product pipe, rock sections, and demanding containment requirements |