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DATA SHEET COLLECTION FIBROTOR® VR.NC.

DATA SHEET COLLECTION FIBROTOR® VR.NC.

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DATA SHEET COLLECTION FIBROTOR® VR.NC.

Product catalog summary

Overview

This document compiles technical data for the FIBROTOR® VR.NC. series of precision rotary indexing tables by the Läpple Group. It covers detailed specifications, dimensional data, load capacities, accuracy metrics, and indexing performance for multiple VR.NC. models.

Product Variants and Encoding

The VR.NC. series includes four main models distinguished by table diameter: VR.NC.16 (520 mm), VR.NC.17 (680 mm), VR.NC.18 (820 mm), and VR.NC.20 (1,020 mm). Each model is identified by a technical code indicating table size, drive motor type (none, AC servomotor, or special), drive arrangement, NC-programmable division type, and optional modules.

Drive Arrangements

Drive configurations are defined by axis orientation:

Horizontal table with vertical rotation axis (codes 211, 221)
Vertical table with horizontal rotation axis (codes 222, 231, 232)

The standard setup is horizontal with vertical axis; trunnion drives have vertical tables with horizontal axes. Upside-down mounting is available upon request.

Technical Specifications

Indexing Accuracy: ±20" to ±25" arc seconds depending on model.
Repeatability: ±5" to ±8" arc seconds.
Axial Runout: Approximately 0.04–0.05 mm, varying with table diameter.
Concentricity: 0.05–0.08 mm based on center hole size.
Plane Parallelism: 0.10 mm.
Center Hole Diameter: Ranges from 125 mm to 610 mm by model.
Weight: From about 390 kg (VR.NC.16) to 820 kg (VR.NC.20) without motor.

Load Capacities

Load limits are specified separately for dynamic (rotating) and static (stationary) conditions, including axial and radial forces, tilting moments, and drive torques:

Add-on diameters permissible from 3,400 mm to 8,800 mm.
Axial dynamic loads up to 175,000 N; static up to 316,000 N.
Radial dynamic loads up to 90,000 N; static up to 112,000 N.
Tilting moments dynamic up to 45,000 Nm; static up to 75,000 Nm.
Drive torque dynamic up to 16,750 Nm; static tangential moment up to 28,000 Nm.

Note: Combined load scenarios require consultation with FIBRO for assessment.

Indexing Performance and Times

Indexing times are detailed for rotation angles from 5° to 360°, across a range of moments of inertia (500 to 48,000 kg·m² depending on model). Key parameters include:

Total gear ratios vary by model and inertia.
Rotational speeds range from ~4.7 to 23.8 revolutions per minute.
Angular velocities between approximately 0.49 and 2.49 rad/s (28.2°/s to 142.8°/s).
Acceleration times from about 0.6 to 3 seconds.
Angular accelerations between 0.33 and 4.15 rad/s².
Acceleration angles and reaction time allowances are specified to optimize performance.

Graphs and tables illustrate that lower inertia and smaller rotation angles yield faster indexing times.

Additional Information

Rotation direction supports both clockwise and counterclockwise operation.
Standard drive motors are Siemens AC servomotors (model 1FK7105), with options for no motor or special versions.
CAD files and further technical documentation are accessible via the manufacturer’s website.

Critical Notes and Recommendations

Careful consideration of load data is essential, especially for combined loads which must be reviewed by FIBRO.
Working position flexibility includes standard horizontal or trunnion drive configurations; upside-down mounting is available on request.
High precision parameters such as indexing accuracy and repeatability are crucial for applications demanding exact positioning.
Model selection should be based on table size, load capacity, and required indexing speed.

This data sheet collection serves as a comprehensive technical reference for engineers and purchasers evaluating FIBROTOR® VR.NC. rotary indexing tables for precision automation and machining tasks.

Catalog excerpts

DATA SHEET COLLECTION FIBROTOR® VR.NC.-1

DATA SHEET COLLECTION FIBROTOR® VR.NC. MEMBER OF THE LÄPPLE GROUP

Open the catalog to page 1

DATA SHEET COLLECTION FIBROTOR® VR.NC.-2

CAD-filed and technical data can be downloaded from www.fibrotor.en/downloads. 2 ENCODING TECHNICAL DATA without motor Drive motor Special version Drive arrangement without additional modules Standard (horizontal, axis of rotation vertical) Trunnion Drive (vertical, axis of rotation horizontal) without additional modules Additional modules horizontal, axis of rotation vertical vertical, axis of rotation horizontal

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-3

FIBROTOR® VR.NC.16 TECHNICAL DATA Indexing accuracy in arc seconds Indexing accuracy in arc length Concentricity centre hole Plane parallelism Axial runout table top Centre hole CW-CCW rotation Standard horizontal, axis of rotation vertical Trunnion Drive execution vertical, axis of rotation horizontal without motor Working position LOAD DATA* Perm. add-on diameter Perm. axial loading on positioned table top FA Perm. radial loading on positioned table top FR Perm. axial loading on rotating table top FA Perm. radial loading on rotating table top FR Perm. tilting moment on rotating table top M...

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-4

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-5

FIBROTOR® VR.NC.17 TECHNICAL DATA Indexing accuracy in arc seconds Indexing accuracy in arc length Axial runout table top Concentricity centre hole Plane parallelism Centre hole CW-CCW rotation Standard horizontal, axis of rotation vertical Trunnion Drive execution vertical, axis of rotation horizontal without motor Working position LOAD DATA* Perm. add-on diameter Perm. axial loading on positioned table top FA Perm. radial loading on positioned table top FR Perm. axial loading on rotating table top FA Perm. radial loading on rotating table top FR Perm. tilting moment on rotating table top M...

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-6

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-7

FIBROTOR® VR.NC.18 TECHNICAL DATA Indexing accuracy in arc seconds Indexing accuracy in arc length Axial runout table top Concentricity centre hole Plane parallelism Centre hole CW-CCW rotation Standard horizontal, axis of rotation vertical Trunnion Drive execution vertical, axis of rotation horizontal without motor Working position LOAD DATA* Perm. add-on diameter Perm. axial loading on positioned table top FA Perm. axial loading on rotating table top FA Perm. radial loading on positioned table top FR Perm. radial loading on rotating table top FR Perm. tilting moment on rotating table top M...

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-8

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-9

FIBROTOR® VR.NC.20 TECHNICAL DATA Indexing accuracy in arc seconds Indexing accuracy in arc length Axial runout table top Concentricity centre hole Plane parallelism Centre hole CW-CCW rotation Standard horizontal, axis of rotation vertical Trunnion Drive execution vertical, axis of rotation horizontal without motor Working position LOAD DATA* Perm. add-on diameter Perm. axial loading on positioned table top FA Perm. axial loading on rotating table top FA Perm. radial loading on positioned table top FR Perm. tilting moment on positioned table top M K stat Perm. drive torque on rotating table...

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DATA SHEET COLLECTION FIBROTOR® VR.NC.-10

FIBRO GMBH | Weidachstraße 41-43 | 74189 Weinsberg | fibro.de

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