Industry: Precision Machining

Location: Bulgaria

Client: Aerospace Component Manufacturer Using Vertical CNC Milling Machines

Related Product: Eurotec Slideway Oil 68

Client Background

This aerospace subcontractor in Sofia supplies titanium and aluminum components for regional aircraft manufacturers. The shop operates 4 vertical CNC machining centers with linear guideways and hydraulic clamping, running 3 shifts per day with tolerances as low as ±2 microns.

Operational Challenge

• Stick-slip phenomenon caused inconsistent feed motion
• Surface finish defects (chatter marks, ripples) led to high scrap rates (~7%)
• Machine operators reported erratic axis behavior during low-speed movements
• Poor separation between slideway oil and coolant led to emulsion contamination

Solution

Eurotec recommended Eurotec Slideway Oil 68, a high-adhesion, low-friction lubricant designed for linear and box guideways. Its features include:

• Enhanced friction modifiers to eliminate stick-slip
• Excellent metal adhesion and anti-drip properties
• Water separability and emulsion resistance, preventing contamination
• Rust inhibitors to protect exposed guides during idle periods

Implementation Process

• Machines were flushed and guideways cleaned manually
• Coolant system was decoupled and cleaned to prevent cross-contamination
• Slideway oil introduced with 48-hour break-in monitoring period
• Surface finish quality was recorded using profilometers

Measured Results

• Surface roughness (Ra) improved by 30%, verified through profilometry
• Scrap rate reduced from 7% to 1.8% over 3 months
• Zero operator complaints related to feed irregularities
• Improved repeatability during fine machining operations
• Coolant life extended by 2 months due to less emulsification

Customer Statement

"We’ve gone from fighting finish issues to achieving clean, consistent passes across the board. Eurotec

Slideway Oil 68 solved what we thought was a mechanical problem."