Deep advances

When designing the B850, Unisig evaluated all aspects of the previous designs. The bed and rack and pinion system were retained, while feed systems were modernised to improve rigidity and reduce backlash. A new high performance, helical geared transmission was incorporated in a three range, automatically shifting headstock. Incorporation of modern gearing and power train concepts simplified construction of the machine, reducing cost and boosting reliability and performance.

The B850 also offers a standard programmable coolant system. Combined with user-friendly controls and the other new design features, the machine allows an operator to focus on the part being machined instead of managing a wide variety of manual functions.

Both the work and tool headstocks deliver 166hp, providing the high power and torque needed to drill holes up to 180mm diameter in nickel alloys, 221mm in carbon steel, and 320mm with counterboring. The B850 model is available with maximum drill depths ranging from 1.98m to 19.81m, and the machine bed can accommodate workpieces up to 10 tons.

The B850 is part of Unisig’s extensive B-series line, designed for on-centre drilling of round workpieces in applications such as aerospace, defence, and oil and gas. In addition to standard BTA drilling methods, these machines are also capable of counterboring, trepanning, and skiving and roller burnishing processes, achieving the extremely strict tolerances required by manufacturers in these and other industries.

As with all of its equipment, Unisig engineers and manufactures the B-series in the United States with high performance components. The company’s full portfolio of machines is capable of producing holes with diameters ranging from under 1mm to over 1,000mm at depths from 20mm to 20m. Machines are provided with all necessary durable tooling and machine accessories.

Unisig provides comprehensive training for machine operation and process optimisation, as well as post-installation technical support.

Unisig www.unisig.de