HSD ES367 Spindle Repair & Rebuild Services
Overview
The HSD ES367 is a high-torque, liquid-cooled electrospindle built in the 132 x 132 mm frame class. Unlike the ES368 (which offers multiple RPM configurations), the ES367 is positioned as a higher torque synchronous unit, designed for heavier cutting applications in composite and plastic machining environments HSD_Cat_Composite_mar24_Web_ENG….
It is commonly selected when greater torque stability and power density are required within a compact footprint.
Technical Specifications (Official Model Data)
From the HSD catalog (pages 12–13) HSD_Cat_Composite_mar24_Web_ENG…:
- Body Diameter: 132 x 132 mm
- Max Speed: 24,000 rpm
- Motor Technology: Synchronous
- Torque S1/S6 (40%): 21.5 / 25.8 Nm
- Power S1/S6 (40%): 18 / 21.6 kW
- Taper: HSK E63
- Cooling: Liquid
- Aggregate anti-rotation flange: Yes
- On request:
- Vibration sensor
- Thermal sensor on front bearings HSD_Cat_Composite_mar24_Web_ENG…
Where ES367 Is Typically Used
Because of its high torque output (up to 25.8 Nm S6 listed) HSD_Cat_Composite_mar24_Web_ENG…, ES367 units are often used in:
- Composite structural machining
- Heavy trimming operations
- Applications requiring stable torque at moderate speeds
- Multi-axis systems where load consistency matters
🔍 Common Failure Modes – HSD ES367
1️⃣ High-Load Bearing Stress
With torque levels significantly higher than ES368, the front bearing stack in ES367 sees substantial axial load.
Symptoms
- vibration during heavy cuts
- chatter under load
- premature heat buildup
2️⃣ Liquid Cooling System Issues
As a liquid-cooled synchronous spindle HSD_Cat_Composite_mar24_Web_ENG…, cooling performance is critical.
Common issues:
- coolant restriction
- scale buildup
- improper flow rate
Symptoms
- thermal growth
- overheating alarms
- shortened bearing life
3️⃣ Electrical Drive Sensitivity (Synchronous Motor)
Synchronous motors are more sensitive to:
- drive parameter misconfiguration
- voltage instability
- encoder signal issues
These can sometimes mimic mechanical failure symptoms.
4️⃣ Tool Interface Wear (HSK E63)
HSK E63 taper requires clean, accurate toolholder engagement. Over time:
- clamp force reduction
- taper fretting
- pull stud wear
can reduce machining accuracy.
🧰 ES367 Rebuild Process
- Full disassembly and contamination removal
- Bearing stack replacement (high-load rated configuration)
- Precision preload calibration
- Shaft and taper inspection
- Tool clamp system inspection + rebuild if needed
- Cooling channel inspection + pressure testing
- Rotor dynamic balancing
- Final run test with thermal + vibration monitoring
Because this is a high-torque model, preload accuracy is critical to bearing longevity.
💰 Repair vs Replace – ES367
With rated power up to 21.6 kW S6 HSD_Cat_Composite_mar24_Web_ENG…, ES367 replacement cost can be significant.
In most real-world cases:
- Bearing degradation is primary failure
- Motor windings remain serviceable
- Tool clamp wear is secondary
A rebuild restores torque stability without full capital replacement.
✅ Preventative Maintenance – ES367
- Maintain proper coolant flow and cleanliness
- Avoid excessive side loading from poorly balanced tooling
- Inspect HSK E63 tapers regularly
- Monitor vibration and thermal trends
- Replace worn pull studs before clamp damage occurs