June 18, 2008 - Super-Precision® DD100/DD200/DD300 models incorporate frameless rare-earth permanent magnet torque motor, with no mechanical gearing, that wraps around spindle to eliminate need for separate motor extension. A ±.077 arc/sec resolution, ± 2.19 arc/sec accuracy encoder is mounted directly on spindle to provide accurate positioning. Direct-drive design eliminates backlash, enabling repeatability of ±2 arc/sec, and drawbar actuator lets products accept multiple workholding devices.

Related categories: Mounting and Attaching Products

Press Release
Release date: June 3, 2008

Hardinge Demonstrates Super-Precision®, Direct-Drive Rotary Technology

IMTS booth 8032. Hardinge's Direct-Drive Rotary Systems incorporate a rare-earth permanent magnet torque motor with no mechanical gearing. This frameless motor wraps around the spindle, eliminating the need for a separate motor extension resulting in a much smaller footprint. A ± .077 arc/sec resolution, ± 2.19 arc/sec accuracy encoder is mounted directly on the spindle to provide extremely accurate positioning.

The direct-drive design eliminates backlash, which results in high servo stiffness and extremely rapid and accurate bidirectional response and exceptional repeatability of ±2 arc/sec. These systems require little maintenance and have fewer parts to wear than traditional gear-driven systems. A rugged cross roller bearing in the front of the spindle and a tapered bore cylindrical bearing in the back of the spindle provide support and rigidity.

Like all Hardinge rotary systems the direct-drive models are designed with a drawbar actuator to accept multiple workholding devices providing the most flexible systems on the market. Various diameter faceplates, collets, step chucks, power chucks, and scroll chucks can be quickly interchanged. The DD100 super-precision, 4,500-degrees per second positioner is ideal for drill & tap, laser processing and intricate or high-speed milling applications. The larger DD200 and DD300 high-torque, super-precision models include a slotted faceplate and a spindle brake clamp for off-center drilling and other high-force machining operations. For more information call 800-510-3161, or order online at www.hardingetooling.com.

Company Information:
Name: Hardinge Workholding Division
Address: One Hardinge Dr.
City: Elmira
State: NY
ZIP: 14902
Country: USA
Phone: 607-378-4022
FAX: 607-734-3886
http://www.hardingetooling.com

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