UNISIG UNR12-2-750 Reaming Machine
UNISIG UNR reaming machine interior closeup
UNISIG UNR12-2-1500 Reaming Machine
UNISIG UNR reaming machine with automatic tool changer

UNR Reaming Machines

The reaming process is a vital step in barrel manufacturing. UNR reaming machines are built with intuitive controls, ergonomic operation, and improved accuracy in reaming. Machines can be configured for push- or pull-reaming operations, expanding manufacturing capabilities and allowing manufacturers to maximize tooling while pushing the limits of rifle barrels.

UNR reaming machines are capable of extremely high accuracy in roundness and diameter tolerances in any rifle gauge. Machines are available in one or two spindle options, and can be configured with combination gundrill-reaming capabilities to meet production requirements for industry-leading barrel manufacturers.

Description UNR12-2 UNR20-2 UNR12-4
Tooling Type Reaming, Gundrilling (option)  Reaming, Gundrilling (option) Reaming
Max Reaming Diameter 12 mm 20 mm 12 mm
Maximum reaming diameter, single spindle mode (option) 19.0 mm 25.0 mm
Number of Spindles 2 2 4
Description UNR12-2 UNR20-2 UNR12-4
Tooling Type  Reaming, Gundrilling (option)  Reaming, Gundrilling (option) Reaming
Max Reaming Diameter 0.50 in 0.79 in 0.50 in
Maximum reaming diameter, single spindle mode (option) 0.75 in 0.98 in
Number of Spindles 2 2 4