Micro-Drill Spindle

Name: Micro-Drill Spindle | Micro-Machining Spindle – Frigate
Price: 249.00 USD
Availability: InStock

Micro-Drill Spindle systems achieve sub-micron radial runout stability through precision-balanced rotors and matched angular contact bearings. This minimizes tool tip deviation during high-speed rotation, enabling repeatable micro-hole drilling below 0.1 mm diameter. Radial accuracy remains consistent across long duty cycles, critical in applications requiring high-aspect-ratio bores.

Material Specification

Martensitic Stainless Steel (440C), Ceramic Hybrid (Si₃N₄ bearings), or Titanium Alloy (Ti-6Al-4V)

Runout (TIR) at Tool Interface

≤ 1 µm (for <3mm shaft), ≤ 0.5 µm (ultra-precision models)

Bearing Class/Precision

ABEC 7/9 (ISO P4/P2), Ceramic Hybrid Bearings (Grade 5)

Shaft Diameter Tolerances

h5/h6 (ISO), ±0.002 mm (for Ø3–6 mm shafts)

Collet/Chuck Interface

ER-8/ER-11 (0.5–3 mm), HSK-E25 (ultra-precision), ±0.003 mm grip concentricity

Product Description

Micro-Drill Spindle housing is manufactured with low thermal expansion alloys and features symmetrical cooling channels to prevent axial elongation. Preloaded ceramic hybrid bearings pflegen dimensional integrity under high-speed rotation, mitigating thermal drift and preserving axial accuracy in continuous manufacturing environments.

Dynamic Balance Grade

G0.4 (ISO 1940-1), ≤ 0.1 g·mm/kg at 30,000 RPM

Surface Hardness

58–62 HRC (shaft), 60+ HRC (bearing races)

Overall Length/Dimensions

Length – 80–150 mm (±0.05 mm), Mounting Flange – Ø25–40 mm (±0.01 mm)

Temperature Operating Range

15–35°C (standard), –10–60°C (extended with thermal stabilization)

Certification Standard

ISO 9001, ISO 1940-1 (Balance), ABEC/ISO 492 (Bearing), DIN 69051 (Spindle Interfaces)

Technical Advantages

Micro-Drill Spindle incorporates compact, high-frequency synchronous motors with direct drive coupling to eliminate backlash. Rotor dynamics are optimized for vibration suppression at speeds above 100,000 RPM. Controlled acceleration profiles reduce torsional shock to micro-tools, extending tool life and maintaining drill point alignment.

Micro-Drill Spindle uses ultra-short clamping interfaces, such as polygonal or HSK-E configurations, to reduce bending moments on tools with sub-millimeter diameters. The reduced overhang minimizes cantilever effects and enhances drilling precision in brittle substrates such as glass, ceramic, or FR4.

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Industry Applications

Printed Circuit Board Drilling

Micro-Drill Spindle ensures genaue via formation in multilayer PCBs, maintaining hole diameter tolerance within ±5 µm across high-speed cycles.

Semiconductor Wafer Micro-Hole Machining

Used for through-silicon vias and alignment holes in wafers, enabling micron-level depth control without inducing substrate microcracks.

Medical Stent and Cannula Fabrication

Enables precision drilling of hypo tubes and stents with diameters below 0.2 mm using controlled radial runout and stable RPM.

Watchmaking and Precision Horology

Facilitates micro-bore creation in metallic and ceramic watch components, supporting concentric hole patterns under 0.1 mm diameter tolerances.

Aerospace Sensor Microchannel Drilling

Drills precision microchannels in sensor housings for air-data systems, where positional accuracy and thermal drift compensation are critical.

Fiber Optic Connector Port Machining

Used to machine alignment sleeves and ferrule bores, requiring exact cylindricality and concentricity for single-mode light path integrity.

Bearing System Designed for Long Life Under Micro Loads

Micro-Drill Spindle bearing architecture supports low dynamic loads with high stiffness ratios. Axial and radial preload is fine-tuned to maintain spindle stability without generating excessive heat, essential for preventing vibration-induced tool deflection during ultra-fine depth drilling.

Micro-Drill Spindle is engineered with clean air purge and oil-free bearing options, supporting class 100 cleanroom environments. The lubrication system eliminates contamination risks while ensuring bearing reliability during extended ultra-high-speed operations in semiconductor and biomedical device fabrication.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate's Micro-Drill Spindle reduce axial growth during thermal cycling?

Frigate’s Micro-Drill Spindle uses a thermally symmetrical housing and precision cooling channels to limit temperature gradients across the spindle body. The bearing stack is preloaded with controlled force to handle axial expansion without inducing stress. Materials with low coefficients of thermal expansion are selected for the spindle core. This ensures axial accuracy even during extended high-speed operations.

What spindle configurations does Frigate offer for micro-drilling brittle substrates like ceramics or silicon?

Fregatte supplies Micro-Drill Spindle units with direct drive motors and ultra-short tool interfaces to reduce tool deflection. Air bearing and hybrid bearing versions are available based on substrate hardness and vibration tolerance. RPM stability above 120,000 minimizes microfractures during entry. These spindles are optimized for low-thrust, high-precision drilling in fragile materials.

How does Frigate ensure vibration isolation in Micro-Drill Spindle for high aspect ratio holes?

Frigate designs Micro-Drill Spindle assemblies with dynamically balanced rotors and low-inertia shafting. Optional vibration sensors can be integrated near the nose for live monitoring. All rotating elements are balanced to G1.0 or better to eliminate harmonic amplification. This setup maintains stability when drilling holes deeper than 20× diameter.

Can Frigate’s Micro-Drill Spindle support automated tool change systems in multi-axis CNCs?

Yes, Frigate’s Micro-Drill Spindle can be built with custom nose geometries compatible with robotic tool changers. Precision indexing ensures repeatable tool loading with under 2 µm positional error. Tool retention is pneumatically or hydraulically actuated based on system design. These spindles integrate easily into automated micro-machining cells.

How does Frigate handle cooling and lubrication in oil-free Micro-Drill Spindle configurations?

Frigate offers Micro-Drill Spindle systems with clean air purge and passive heat sink elements for environments that prohibit oil-based lubricants. Dry-running hybrid bearings are selected to minimize wear under low load. Thermal sensors track bearing temperatures to trigger flow adjustments automatically. This design supports cleanroom-grade operation without performance loss.

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