⚙️ Rock TBMs (17"/19" Disc Cutters, Cerchar Abrasivity CAI 0.5-5.0, Cutter Life Hours)

TBM Disc Cutter Wear Rate Calculator

Predict 17-inch and 19-inch tungsten carbide disc cutter ring wear rates, rolling distance (km), and cutterhead rotation torque for hard-rock Tunnel Boring Machines (Robbins / Herrenknecht): evaluate rock Unconfined Compressive Strength (UCS 50-250 MPa) and Cerchar Abrasivity Index (CAI 1.0 to 5.0), and mechanized tunneling tool supply profits.

1. Project & Operating Inputs

Cutterhead Disc Cutters (Cutter Count e.g. 48 17-Inch Heavy Cutters)

Rock Cerchar Abrasivity Index (CAI Value e.g. 3.5 Abrasive Quartzite)

Customer Bid Price for Supplied & Rebuilt Disc Cutter Tooling ($ / Cutter)

Alloy Steel Cutter Ring, Timken Tapered Bearings, Heavy Mechanical Seal ($)

2. Financial Breakdown & Yield

TBM DISC CUTTER WEAR

Turnkey Disc Cutter Supply Contract Profit

Tunneling Tooling Manufacturing Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost