The NISHIJIMAX NHC-280 is a heavy-duty high-speed circular saw built for production cutting of large-diameter steel bar and billet. With round capacity up to 11.02 inches (280 mm), it combines a 60 HP saw motor, 35.83-inch circular blade, and 35° servo-controlled cutting axis for demanding cutoff applications. Automatic material sizing and hydraulic clamping support consistent production cycles, while the machine’s 37,479-pound construction provides the stability required for cutting substantial ferrous cross sections.
NHC-280 Series (11 inch Cutting Capacity) Features:
The NHC-280 handles round stock to 11.02 inches and square material to 7.87 inches. A 60 HP saw motor and 35.83-inch blade give the machine the cutting package required for large ferrous cross sections used in forging, heavy equipment, energy, and other component-production environments.
Unlike the 45° arrangement used on several smaller NHC models, the NHC-280 uses a 35° slant cutting axis. An AC servo motor and ball screw control the feed, while blade speed ranges from 15 to 60 RPM. This combination gives the machine controlled engagement through stock approaching 280 mm in diameter.
The Pat Mooney NHC-280 weighs approximately 37,479 pounds and uses hydraulic horizontal and vertical clamping to secure the material. A 17.72-inch single index handles automatic length positioning, while blade monitoring, chip brushing, and lubrication systems support the cutting process during extended production runs.
| Specification | Value |
| Cutting Capacity | 11.02 in (280 mm) round |
| Cutting Axis | 35° slant cutting axis |
| Saw Motor Power | 60 HP (45 kW) |
| Saw Blade RPM | 15–60 RPM |
| Saw Blade Diameter | 35.83 in (910 mm) |
| Single Index | 17.72 in (450 mm) |
| Machine Weight | 37,479 lb (17,000 kg) |
| Cutting Axis Drive | AC servo motor / ball screw |
| Sizer Axis Drive | AC servo motor / ball screw |
| Clamping | Hydraulic horizontal and vertical |
The Pat Mooney NHC-280 Series is a Nishijimax high-speed carbide circular saw for automatic cutting of heavy stock through the 11-inch class. Its configuration places the machine within a defined range of cutoff work rather than treating it as a general-purpose saw.
The NHC-280 combines an 11.02-inch (280 mm) maximum round capacity with a 60-hp (45-kW) saw motor, 15–60 rpm blade range, 35.83-inch (910 mm) blade, 35-degree slant cutting axis, servo-driven sizing, and an approximately 37,479-pound structure. Final machine selection depends on the complete material range, section geometry, finished length, tolerance, production volume, blade requirements, clamping, material support, and part handling.
Common applications include:
The 280 mm maximum round capacity makes the NHC-280 the largest straight-cut NHC model in this product group.
The 45-kW drive and 15–60 rpm blade range provide the power and speed control required for large sections.
The approximately 37,479-pound machine supports the spindle, guides, and clamps during heavy cutoff cycles.
Servo indexing, bundle racks, load tables, and engineered exit systems can organize long, heavy stock through production.
The NHC-280 extends maximum round capacity from the 9-inch class to 11.02 inches (280 mm). It also uses a 60-hp saw motor, 35.83-inch blade, and heavier machine structure for the larger working range.
Published data lists a 35.83-inch (910 mm) blade, 0.2-inch (5.2 mm) blade thickness, and 15–60 rpm speed range. Tooth count and carbide grade depend on the material, diameter, and required cycle.
Hydraulic horizontal and vertical clamps hold the workpiece at the cutting zone. Close blade guides and the heavy slant-bed saw head limit movement under cutting load.
The PLC/HMI displays job data, saw-motor amp load, blade-use information, and troubleshooting guidance. Automatic lubrication is monitored and can stop the machine when a lubrication fault occurs.
Incoming bar length, bundle weight, table alignment, separation after unstrapping, stock accumulation, finished-part weight, part diversion, remnant handling, and operator access all affect the system layout.