Servo Machining Units (Power Heads)

HAEGOLIA Servo Machining Units (Power Heads) are modular, high-rigidity driving components engineered for heavy-duty industrial cutting. Each unit integrates a specialized precision spindle, a robust cast-iron housing, and a dedicated feed or drive mechanism into a standardized engineering building block. By replacing custom-built spindle configurations, these modules shorten equipment design cycles and ensure repeatable machining accuracy across high-volume, multi-shift production lines.

Special Purpose Machines (SPMs): Dedicated single-station layouts executing simultaneous, multi-axis, and multi-angle metal cutting.

Indexing Mass Production: High-frequency setups requiring minimized cycle times, such as rotary transfer machines and linear indexing tables.

Automated Production Lines: High-turnover operations including automotive powertrain deep-hole drilling, aerospace fastening, and structural steel processing.

Modular Architecture: Standardized base interfaces and ground keyways (e.g., 10H7 / 20H7) enable drop-in physical integration and precise cross-brand compatibility.

Spindle Runout Control: Rigorous assembly protocols restrict radial and axial face runout to ≤ 0.005 mm, effectively dampening cutting harmonics and extending tool life.

Thermal and Seal Protection: Dual-lip TC oil seals combined with specialized piston rings isolate the bearing cavities from coolant or fine dust ingress, stabilizing temperatures during continuous runs.

Series 1: Precision Spindle Heads (SA / SB / SR Series)

What it is: Pure rotational drive modules built without an internal axial feed mechanism.

When to use: Optimized for machine configurations that already feature independent external servo linear slides or hydraulic feed tables. Decoupling rotation from linear feed ensures that massive cutting forces do not deflect the feed system, while offering high spatial flexibility in multi-axis setups.

Technical Highlights

Typical Applications: High-speed milling and precision turning via external slides; multi-axis drilling arrays for SPMs; modular CNC retrofits.

Series 2: Boring & Milling Spindle Heads (HD Series — Hydraulic Feed)

What it is: Heavy-duty material removal modules utilizing an integrated high-pressure hydraulic cylinder for axial feed.

When to use: Specified when working with tough materials (such as cast iron or structural steel) where standard pneumatic or servo feeds lack sufficient thrust. The integrated hydraulic advance provides the essential structural rigidity needed to counteract deflection during large-diameter boring or wide face milling.

Technical Highlights

Typical Applications: Rough and finish boring of engine blocks and large cast housings; high-volume face milling lines; dedicated structural steel processing.

Series 3: Drilling Spindle Heads (HD Series — Pneumatic / Hydraulic Self-Feed)

What it is: High-frequency hole-making units featuring built-in pneumatic or hydraulic self-feeding actuation.

When to use: Engineered to optimize cycle times in high-volume standalone drilling operations. The ultra-compact nose architecture is specifically reinforced to mount multi-spindle drilling heads, while integrated stroke micro-switches control rapid-advance and retract stages.

Technical Highlights

Typical Applications: High-output automated drilling cells and tight multi-hole patterns; multi-head synchronized aluminum extrusion processing; multi-spindle array attachment.

Series 4: Tapping Spindle Heads (HN Series — Mechanical Lead Screw)

What it is: Rigid threading modules utilizing an interchangeable mechanical lead-screw cartridge to force axial feed.

When to use: Critical for blind-hole threading or operations demanding absolute thread profile integrity. Enforcing a physical 1:1 synchronization between spindle rotation and pitch advance prevents cross-threading or stripping in soft aluminum or abrasive cast iron, without requiring expensive multi-axis CNC controllers.

Technical Highlights

Typical Applications: Blind-hole tapping in die-cast automotive components; high-turnover industrial fastener lines; multi-spindle rigid tapping machines.

Use the decision flowchart below to quickly identify the appropriate power head series based on your machine layout and primary machining operation.

Figure 5-1: Power Head Selection Decision Flowchart

1. Slide Evaluation: If your structural layout already features a dedicated servo linear slide, select the Precision Spindle Head (SA / SB / SR Series).

2. Process Matching: Choose the Boring & Milling Spindle Head (HD Hydraulic) for heavy material removal; the Drilling Spindle Head (HD Pneumatic/Hydraulic) for high-frequency hole making; or the Tapping Spindle Head (HN Lead Screw) to secure precise thread profiles.

Manufacturing & Quality Foundation

Every HG power head is validated through a standardized factory testing regimen before delivery. Rotating assemblies utilize premium paired bearings (NSK/FAG) to distribute heavy axial and radial load combinations. Digital balancing and runout metrics are permanently archived for each serial number, allowing international system integrators to completely bypass secondary supply chain inspection protocols.

Please contact our engineers for more detailed product information and selection assistance.