Overview

The document details specifications and technical data for the SFSD12 series drilling and tapping spindle heads, specifically models SFSD12 and SFSD12H, with options for HSK63 and NT40 tool holders.

Mechanical Specifications

• Tool Holder Options: HSK63 (optional), NT40
• Drilling Capacity: Up to φ35 mm in S45C material
• Maximum Stroke: 150 mm
• Maximum Rotational Speed: 2000 RPM for SFSD12, 6000 RPM for SFSD12H
• Horsepower: 3 HP × 4 poles
• Weight: 106 kg (standard), 156 kg (with motor bracket)

Dimensions and Mounting Details

• Flange diameter: φ280 mm
• Pitch Circle Diameter (PCD): φ240 mm and φ70 mm
• Mounting holes: 7 through holes of φ18 mm, 4 holes of φ8.5 mm drilled to 20-25 mm depth with M10x1.5 threaded holes
• Angular details: 30° and 45° hole orientations
• Spindle pulley dimensions: 8M-54T, φ133.6×J×25

Bearings and Seals

• Spindle Bearings: Options include 6011Z×1 / 6009Z×1, 32011×1 / 32009×1, or 7011×2 / 7009×2 depending on model
• Pulley Bearings: 6211ZZ×2
• Ballscrew Bearing Block: 7204×2 with seals TC26-42-8×1 and TC24-42-8×1
• Seals: Front cover seal TC120-145-12×1, spindle seal TC75-90-12×1, piston O-rings P120×2, front cover O-rings G120×1 / G85×1

Ballscrew Specifications

• Diameter: φ25 mm
• Lead: 5 mm
• Tolerance class: C5
• Roundness tolerance: ≤ 0.003 mm

Motor and Drive

• Delta servo motor model: ECMA E11315
• Power: 3 HP × 4 poles

Additional Notes

• Special spindle unit custom orders are accepted.
• Two configurations are presented: standard SFSD12 and SFSD12 with motor bracket (MB), the latter weighing 156 kg.

Summary

The SFSD12 series spindle heads are designed for precision drilling and tapping with servo motor drive, offering high rigidity and accuracy. The units support multiple tool holders (HSK63 and NT40), have robust bearing arrangements, and precise ballscrew assemblies to ensure smooth operation. The detailed mounting and dimensional data facilitate integration into CNC machinery. Customization options are available to meet special requirements.