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Rotary Table offers high-precision gripping options.

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Rotary Table offers high-precision gripping options.
Rotary Table offers high-precision gripping options.
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March 16, 2011 - Equipped with collet-ready 16C spindle, 210 mm Model GD210LP accepts standard 16C collets, step chucks, Sure-Grip® expanding collets, and custom collets with optional collet closer. Stiffness and rigidity are achieved with large diameter bearings and fail-safe clamp systems, allowing part weights up to 220 lb. With up to 233 lb-ft clamping torque, table handles off-center drilling, cross-axis milling, and other high-force cutting applications with ±15 arc-sec accuracy.

The Hardinge 210mm Rotary Table Gets a Few New Grips

(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

Hardinge Workholding Division
One Hardinge Dr.
Elmira, NY, 14902

Press release date: March 11, 2011

"Back in 2008, Hardinge introduced a low-profile rotary table as a standard, no-frills unit to compete against other 210mm tables on the market, states Al Comstock, Rotary Product Manager at Hardinge Inc. Now, by customer demand, we've redesigned the model to include the infamous Hardinge collet-ready 16C spindle that provides the high-precision gripping options for which Hardinge is known. We've also extended the spindle nose for additional tooling clearance."

Part quality begins at the spindle. Minimal overhang from the spindle bearings assure that spindle accuracy is transferred directly to the part being machined. Most brands of rotary tables use a collet adaptation chuck, moving the cutting several inches away from the spindle bearings. Hardinge rotary spindles are collet-ready for gripping parts of all shapes, sizes and materials. High-precision gripping options for the GD210LP include standard 16C collets, step chucks for larger diameters, Sure-Grip® expanding collets and custom collets with the use of an optional collet closer. Special accuracy FlexC(TM) collet systems, chucks and the precision-ground faceplate (included) will mount on the A2-5 spindle.

What does this mean to the programmer and machine operator? Higher accuracy jobs can be run, less tooling interference, length control options, internal gripping capability, no time-consuming fixtures, and lightweight alternatives for a heavy chuck. The added versatility and the ability to share tooling with other machines in the shop is highly advantageous.

The Hardinge enhanced GD210LP rotary table indexer provides rigidity, speed, accuracy, repeatability and flexibility in an affordable package. High stiffness and super rigidity are accomplished with large diameter bearings and a fail-safe clamp system allowing part weight of up to 220 pounds. Radial load testing indicated a stiffness of 4x greater than a competitive model. The GD210LP uses up to 233ft-lb/315Nm of clamping torque to handle off-center drilling, cross-axis milling and other high-force cutting applications. A fast clamp and release in milliseconds reduces cycle time. Hardinge's hardened and ground steel cross-axis helical gear provides a longer life and continued accuracy when compared to softer gears and worm gears found in other brands. Based on true bidirectional testing, Hardinge guarantees ±15 arc-second accuracy and 10 arc-second repeatability.

"With this redesign, all of our rotary products incorporate the collet-ready spindle, states Al Comstock. The Hardinge GD210LP is the most flexible 210mm rotary solution on the market." The GD210LP operates with a Hardinge servo control or it can be integrated to the machine via 4th axis. Options include a left- or right-hand motor mount, pneumatic collet closer, tailstock and a plate or cube trunnion for machining multiple parts. For smaller part production, look at the 160mm rotary table indexer with the Hardinge collet-ready 5C spindle. For more information call 800-843-8801 or visit
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