Custom Rotary Indexer Plate

Custom Rotary Indexer Plate assemblies are engineered to achieve angular positioning repeatability within sub-arc-minute tolerances. Each plate is CNC ground to maintain concentricity within ±0.002 mm and utilizes optimized notch geometry for zero-backlash engagement. This level of precision eliminates positional deviation in multi-axis systems where cumulative angular error is unacceptable. 

Material

Aluminum 7075-T6, Hardened Steel 4140, Stainless Steel 17-4PH

Dimensional Tolerances

Indexing Features – ±0.005 mm; Overall Plate – ±0.02 mm

Number of Positions

Up to 60 positions

Indexing Feature Geometry

Detents – Hardened steel balls; Teeth – Involute or Curvic coupling; Bore Pattern – ±0.01 mm position tolerance

Flatness/Parallelism

Mounting Face – ≤0.01 mm/100 mm; Indexing Face – ≤0.005 mm

Product Description

Custom Rotary Indexer Plate designs incorporate torque-resistant features to prevent rotational slippage under variable acceleration profiles. Radial drive interfaces are configured with zero-clearance fits, and locking geometries are analyzed for stress dispersion. These configurations maintain torsional stiffness even under rapid indexing cycles with fluctuating inertial demands. 

Concentricity/Runout

Radial Runout – ≤0.01 mm TIR; Axial Runout – ≤0.015 mm

Mounting Bore/Holes

Bore Tolerance – H7 (ISO 286); Threads – M6-M16 (Class 8.8); Keyway – DIN 6885

Surface Finish

Indexing Surface – Ra ≤0.4 µm (ground); Mounting Face – Ra ≤0.8 µm

Hardness

Indexing Features – 58-62 HRC; Body – 30-35 HRC (steel), 80 HB (aluminum)

Certification Standards

ISO 9001:2015, VDI/VDE 2617 (Positioning Accuracy), DIN 8626 (Indexing Mechanisms)

Technical Advantages

Each Custom Rotary Indexer Plate is machined and verified for surface parallelism below 0.005 mm to preserve full contact with mating assemblies. Flatness and axial rigidity are maintained under high radial and axial loads by integrating material-specific deflection compensations during plate design. This ensures reliable indexing in systems with heavy or unbalanced payloads. 

Custom Rotary Indexer Plate materials are selected based on matched thermal expansion coefficients with surrounding components. Design features include thermally relieved hubs and precision-fit bearing seats to control dimensional drift due to thermal cycling. This ensures indexing accuracy is preserved during extended operation at elevated temperatures. 

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Industry Applications

Automated Assembly Lines

Custom Rotary Indexer Plate enables precise multi-station part positioning for synchronized pick-and-place, fastening, and inspection in automated assemblies. 

Rotary Transfer Machines

Supports accurate component handoff between machining stations with zero backlash during high-speed indexing under variable cutting torque conditions. 

CNC Indexing Tables

Maintains angular precision and load stability during tool changes or workpiece reorientation in multi-axis CNC machining operations. 

Robotic Welding Cells

Ensures synchronized rotation of fixtures under heat-induced stress while maintaining alignment for multi-pass robotic welding sequences. 

Semiconductor Wafer Processing

Custom Rotary Indexer Plate allows micron-level wafer alignment under vacuum conditions, minimizing thermal expansion and mechanical drift. 

Packaging and Labeling Systems

Provides rapid, repeatable indexing of components or containers for high-speed labeling, sealing, or orientation-sensitive packaging operations. 

 

Integration with Non-Standard Actuation Profiles

Custom Rotary Indexer Plate profiles are configured to match non-linear cam motions, non-uniform dwell times, and complex servo-driven routines. Each plate is tailored with custom slot geometries and angular step sequences to enable smooth motion transitions in both programmable and mechanical indexing applications. Compatibility with proprietary motion profiles is engineered during the design phase. 

Custom Rotary Indexer Plate construction includes reinforced bearing zones, anti-deflection webbing, and load-spreading hub geometries to support moment loads exceeding 1000 Nm. These features prevent elastic deformation when managing eccentric or unbalanced tooling, allowing consistent index integrity across all angular positions. 

Custom Rotary Indexer Plate

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate design Custom Rotary Indexer Plates for zero-backlash indexing?

Frigate uses precision-ground detent profiles and tight-tolerance drive key fits to eliminate mechanical play during rotation. Each plate is CNC-finished to maintain angular repeatability within sub-arc-minute tolerance. We apply FEA to analyze stress points and compensate for deformation in design. This ensures rigid indexing without backlash, even during rapid actuation. 

How does Frigate handle uneven thermal expansion between the indexer plate and mating components?

Frigate selects matched thermal expansion alloys for both the Custom Rotary Indexer Plate and adjacent structures. We add thermal relief slots and isolate heat paths using low-friction bearing seats. Surface coatings like PVD are used to reduce heat-induced wear. These steps keep distortion minimal during high-cycle thermal loading. 

 

Can Frigate customize rotary indexer plates for servo-driven systems with irregular motion profiles?

Yes, Frigate supports non-standard cam or servo motion by machining the indexer plate with sector-specific notch patterns or angular slots. Each profile is tailored based on user-defined motion equations. We simulate servo torque curves to ensure full synchronization under varying acceleration. Integration is verified through digital twin validation before production. 

How does Frigate ensure flatness of the Custom Rotary Indexer Plate under dynamic axial loads?

Frigate machines each plate with controlled warpage compensation and verifies flatness using high-precision CMM. Structural ribbing is added based on axial loading direction and mass distribution. For large-diameter plates, intermediate support zones are designed. This results in consistent flatness during continuous operation with vertical or axial force input. 

What surface treatments does Frigate offer to extend plate life in abrasive environments?

Frigate offers nitriding, PVD coatings, and hard anodizing based on application needs and material selection. These treatments improve wear resistance and reduce friction at contact surfaces. Surface roughness is maintained below Ra 0.4 μm to prevent particulate adhesion. This allows long-term indexing accuracy even in dusty or unlubricated conditions. 

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LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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Custom Rotary Indexer Plate

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