Company Overview

ERLO TALADROS Y ROSCADORAS, founded in 1962, specializes in manufacturing high-quality drilling and tapping machinery. Since 2003, the company expanded into machining units for automatic machines, offering customizable solutions. In 2012, ERLO further diversified its product range to include machining units, feeding slides, multispindle heads, and related equipment designed for seamless integration into customer installations.

Product Range and Applications

The product catalogue includes machining unit heads and feeding slides for operations such as drilling, tapping/threading, milling, countersinking, reaming, chamfering, and boring. Key models include CG.16, CGCM.30, CG.30, CG.40, and CG.50, each with defined drilling and tapping capacities. Accessories include multispindle heads, revolver heads, angular heads, tool holders, and specialized slides for gantry-type assemblies.

Machining Unit Heads Specifications

• CG.16: Max drilling Ø16 mm, tapping M12, ISO 30 spindle, 55 Nm torque, ~40 kg weight.
• CGCM.30: Max drilling Ø30 mm, tapping M18, ISO 40 spindle, 115 Nm torque, ~75 kg weight.
• CG.30: Max drilling Ø30 mm, tapping M18, ISO 40 spindle, 120 Nm torque, ~65 kg weight.
• CG.40: Max drilling Ø40 mm, tapping M24, ISO 40 spindle, 210 Nm torque, ~100 kg weight.
• CG.50: Max drilling Ø50 mm, tapping M42, ISO 50 spindle, 635 Nm torque, ~300 kg weight.

Motor power ranges from 1.1 kW to 22 kW depending on the model. Optional features include encoders for rigid tapping and tool positioning, rotary joints for internal tool cooling, pneumatic and hydraulic clamping (model-dependent), and protection bellows for slide guides.

Feeding Slides and Columns

Feeding slides (CA and CAN series) offer strokes between 150 mm and 350 mm, with maximum thrust forces up to 6 kN at 6 bar pressure. Available with servo or oleopneumatic cylinders, these slides complement machining units. SB columns provide vertical and transversal support with manual centering guides and special designs for gantry-type structures. Customized columns and bridge supports are available on request.

Multispindle and Revolver Heads

Multispindle heads (VH series) and revolver heads enhance productivity by enabling multiple spindle operations. Revolver heads feature 6 to 12 spindle positions, torque capacities from 80 Nm to 800 Nm, and maximum spindle speeds up to 12,000 rpm. They offer precise spindle positioning (+/-3 seconds), various spindle types (ABS, HSK, ER, DIN 55058), and motor powers from 4 kW to 16 kW. Standard features include oil circuits, cooling entries, fixation holes, and electric connectors.

Modular Assembly and Customization

All machining units are designed for modular assembly, allowing combinations with feeding slides, columns, multispindle heads, tool holders, and accessories. Pulley boxes and motor connector boxes can be mounted in multiple positions for installation flexibility. Custom designs are available for specific customer needs, including feed slides with or without servo coupling and specialized columns for larger models.

Dimensions and Installation Notes

Detailed dimensional drawings accompany each unit and accessory, with a disclaimer that measurements may vary without prior notice. Customers are advised to request updated drawings for precise installation planning. ERLO emphasizes consultation for custom adjustments and design support.

Critical Information and Recommendations

• Maximum drilling and tapping capacities are specified for steel with 700 N/mm² tensile strength.
• Optional equipment availability varies by model; pneumatic clamping is not available on some units.
• Customized designs for feed slides, columns, and protection bellows are offered upon request.
• Modular design facilitates integration into automated machining solutions.
• Proper motor power and speed selection is essential to meet machining requirements.

ERLO provides comprehensive technical support and customization services to ensure optimal integration and performance.

Technical Supplement: Multispindle Headstocks for Machining Units

1. Overview and Application Notes

This supplement details specifications and dimensions for multispindle headstocks compatible with ERLO machining units. It covers drilling and tapping capacities, spindle configurations, and advises users to request updated drawings due to possible measurement variations.

2. Multispindle Headstock Models and Compatibility

• Models include VH 042, VH 043, VH 044, VH 062, VH 063, VH 084, VH 102, VH 103, VH 134, among others.
• Compatibility with ERLO units CG.16, CGCM.30, CG.40, and CG.50 depends on tapping capacity and spindle configuration.

3. Key Specifications per Model

4. Drilling and Tapping Capacities

Drilling capacities range from Ø4 mm to Ø14 mm for steel (Rm 500 N/mm²) and cast iron (Ghisa GG25). Tapping capacities range from M3 to M12 metric threads. Drive ratio is consistently 1:1, with max spindle speeds between 3000 and 4000 RPM.

5. Dimensions and Mechanical Features

• Minimum working areas and maximum spindle center distances vary by model to suit different machining needs.
• Spindle types include ER8, ER11, ER16, and ER20 with maximum tool diameters specified (e.g., ER8 max Ø5 mm, ER16 max Ø10 mm).
• Accessories such as connection collars and positioning plates are available, with notes on machine-specific data (A.B.C.D.).
• Compliance with ISO and DIN standards for cones and tool holders ensures compatibility.

6. Recommendations and Notes

• Specifications may change without notice; updated drawings should be requested for precise integration.
• Verify compatibility with ERLO units based on tapping capacity and spindle configuration.
• Weight is a critical factor for machine integration and handling.

7. Summary

This supplement provides comprehensive data on multispindle headstocks for machining units, aiding selection based on drilling/tapping requirements, mechanical dimensions, and compatibility.

Additional Multispindle Heads and Accessories

Further models (VH182, VH183L, VH183, VH184, VH252, VH253L, VH253, VH254) offer 2 to 4 spindles with drilling capacities up to Ø25 mm in steel and Ø28 mm in cast iron. Maximum spindle speeds range from 2000 to 2500 RPM, with weights from 8.3 kg to 52 kg. Tool attachment standards include ER25 and DIN 55058.

Accessories include connection collars and positioning plates, which increase overall length by 9.5 to 12 mm and require prearranged spindles. Tool holders cover a broad range of standards (DIN 228, DIN 238, DIN 55058, Morse taper, ER collets, Weldon holders) and quick-change systems for tapping and drilling, facilitating efficient tool changes without stopping machines.

Pull studs compatible with MAS 403 BT and DIN 69872 standards feature through coolant channels and enable adaptation of tool holders to different machine tapers.

Notes and Recommendations

• Accessory lengths increase when quick connection sleeves are used.
• Machine-specific features (A.B.C.D.) must be considered when selecting accessories.
• Specifications may vary; updated drawings are recommended.
• Compatibility with international tooling standards ensures flexible integration.

Contact and Support

Manufacturer contact details are provided for technical inquiries and support.

Overall Summary

This technical documentation comprehensively covers ERLO’s machining units, feeding slides, multispindle and revolver heads, and related accessories. It details specifications, capacities, modular assembly options, and compatibility with international tooling standards. The documents emphasize customization, modularity, and technical support to optimize integration and performance in automated machining environments.