Technical Specifications and Dimensions

The document details dimensional data and maximum speed ratings for spindle interface designations including TSA, TSI, TSP, and TSAV series. Each interface type (A, I, D, V) is defined with precise measurements in millimeters for diameters, lengths, thread sizes, and other critical parameters. Maximum rotational speeds are specified for steel and hybrid bearing types, indicating performance limits per spindle variant.

Interface Types and Taper Specifications

All spindle interfaces share a nominal taper ratio of 1:7.5, corresponding to an included angle of approximately 3°49' to 3°50' per GMN precision standards. This uniform taper ensures compatibility and precision in tool mounting across all spindle types.

Spindle Interface Flange and Grinding Wheel Data

Flange styles and dimensions (parameters P, Q, L, E, F, G) are provided to support mounting and balancing of grinding wheels. Maximum permissible grinding wheel speeds vary by spindle size and interface type, ensuring safe operation.

Balancing and Vibration Monitoring Components

Information on balancing screws, weights, vibration sensors, and cabling is included to maintain spindle balance and monitor operational vibrations, critical for precision and spindle longevity.

Performance Parameters: Speed Limits and Stiffness

Speed limits for sliding seals in TSAV spindles decrease with increasing spindle size. Axial and radial stiffness values (in N/µm) and load capacities (in Newtons) are provided, reflecting the mechanical robustness of each spindle type.

Additional Technical Data

Tables include quill diameters and lengths, spindle nose interface dimensions, and surface speeds at maximum spindle speeds. Cutting speed is calculated by vc = (E · π · n) / (60 · 1000), where E is wheel diameter (mm) and n is spindle speed (rpm).

Summary of Critical Information

• Dimensional accuracy: Consistent taper angle of ~3°49' to 3°50' across all spindle interfaces.
• Speed limitations: Maximum rpm varies by spindle size and bearing type; hybrid bearings allow higher speeds.
• Load and stiffness: Quantified axial and radial stiffness and load capacities support design and application decisions.
• Balancing and vibration control: Detailed balancing components and vibration sensors ensure operational stability.
• Flange and grinding wheel compatibility: Flange dimensions and balancing features are matched to grinding wheel sizes and speeds.

This data supports precise spindle selection, tool mounting, and operational safety in high-speed grinding applications.

Spindle Load Capacities and Stiffness Specifications

1. Radial and Axial Load Capacities

• TSA models (20 to 100) specify radial load capacities across speeds from 10 to 100,000 rpm.
• TSI and TSP models (sizes 40 to 100) provide axial load capacities differentiated by direction A and B.
• TSAV series (sizes 40 to 200) show axial and radial load capacities at the spindle nose, with axial loads from 300 N (TSAV 40) to 6000 N (TSAV 200).

2. Stiffness Parameters

• Axial and radial stiffness values increase with spindle size, e.g., TSI/TSP 40: axial 32 N/µm, radial 36 N/µm; TSAV 200: axial 345 N/µm, radial 342 N/µm.

3. Directional Load and Stiffness Considerations

• Axial load capacity and stiffness are equal in directions A and B for some models.
• Radial stiffness and load relate either to taper center or spindle nose depending on spindle type.

4. Operating Speed and Vibration Limits

• Maximum spindle and critical speeds are indicated, distinguishing between unloaded spindles and those with oversized tools.
• Permissible residual unbalance values range from 0.001 to 0.01 g·mm depending on operating speed.
• Vibration measurement distances are standardized at five times taper diameter, capped at 100 mm (3.937 inches).

5. Measurement and Quality Control

• Standardized measurement distances ensure consistent vibration and unbalance quality assessments.
• Formulas and inequalities define permissible residual unbalance thresholds.

Summary Table of Critical Parameters

Note: Load capacities and stiffness increase with spindle size and series.

Best Practices and Recommendations

• Operate spindles within specified maximum speeds to avoid resonance and excessive vibration.
• Maintain residual unbalance within permissible limits to ensure spindle longevity and precision.
• Use standardized measurement distances for vibration and unbalance to guarantee consistent quality control.