Rotec Tools LTD

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Lehmann Indexing (Indexer) Tables / Rotary Table

Brochure 500 Series NEW
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Lehmann, founded in 1960, has over 40 years of experience in "Indexing / Rotary Table" manufacturing. The Lehmann Indexing / Rotary Tables are widely used on milling, cutting, grinding and EDM applications. The advantages of small size, high accuracy and unsurpassed spindle clamping capabilities are confirmed sales advantages for numerous OEM's worldwide.

The rotary tables offer a consistent, customized, modular approach, with proven standard elements. The Lehmann product line is known for its high quality standards, compact-sturdy design and unsurpassed process and operating reliability. A broad selection of accessories, various types of motors (communicating with any machine control) and/or a specifically designed CNC "rotary table" controler.

Technical highlights:

Spindle Clamping

Extremely powerful and torsionally rigid

No axial movement upon clamp and unclamp

Clamping onto large diameters close to workpiece

Long service life

Very rapid action

Microprocessor-controlled

Integrated pressure sensors for optimal monitoring

Constant clamping force throughout the entire service life

Spindle

Hardened and polished

Concentricity & axial runout 6 µm
Option < 3 µm

Universal application

Option for many accessories (chuck, faceplate, palleting)

Spindle Bearing

Large pre-loaded bearings

Good gear efficiency due to high surface quality

Large distance between bearings result in high spindle rigidity

Bearings run in oil bath

Gear Train

Greatly increased impact strength due to new gear material and stronger teeth design

Minimal gear play over 360°

Hardened and polished wheel and worm gear

Worm gear 4-point mounted without play

High load capacity and excellent efficiency

Fast (47-111) rpm

High position accuracy (option +/-1")

Large worm gear diameter, highly wear resistant = long-term precision with minimal gear play

High-performance lubrication oil

All bearings run in oil bath

Fully Sealed

Fully sealed IP 67

Spindle housing with pressurized oil lubrication

Motor box air purge - electronically monitored

Option: spindle labyrinth seal for use of high-pressure coolant and aggressive materials such as glass, graphite etc.

Key Benefits:

- Increase of machine capabilities and machining functions.
- Multi-face and complex machining can be performed by simultaneously controlled axes.
- Quick and precise positioning of dividing spindle.
- Reduce production cost due to greater feed rates and shorter cycle times.
- Superior cutting performance and better surface finish due to rigid and stable design of table.
- Increased cutting feeds due to advanced and unique spindle clamping performance.
- Less scrap due to high accuracy and excellent repeatability.
- Fully sealed unit for difficult high pressure coolant applications.

For detailed information visit the Lehmann, Switzerland website at:
http://www.lehmann-rotary-tables.com

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