Machine Tool Slideway & Guide Oil L-HG (ISO VG 68 / 220)
Formulated with highly refined mineral base oils, friction-reducing tackifiers, and specialized sulfur-phosphorus EP additives, eliminating stick-slip chatter at ultra-low feed rates while ensuring rapid demulsibility from water-miscible metal cutting fluids.
Tribological Standard Definition & Engineering Direct Answer
FOSS L-HG Slideway & Guide Oil is a precision-engineered machine tool lubricant formulated from high-viscosity-index Group II paraffinic base stocks fortified with advanced tackifiers, boundary lubricity agents, and sulfur-phosphorus extreme pressure additives. Fully compliant with DIN 51502 CGLP, ISO 6743-13 (L-GA / L-GB), and Cincinnati Machine P-47 (VG 68) / P-50 (VG 220) specifications, it is designed to eliminate stick-slip chatter on horizontal and vertical machine tool guideways at feed rates down to 0.1 mm/min. The lubricant maintains a static-to-dynamic coefficient of friction ratio below 1.0 (friction ratio < 0.98 per Cincinnati Machine test protocol), preventing table jerking and ensuring sub-micron surface finish precision. It features superior tackiness that prevents lubricant squeeze-out from vertical columns and resists wash-off from alkaline water-miscible coolants. Most crucially, FOSS L-HG exhibits rapid demulsibility (ASTM D1401 water separation under 15 minutes at 54°C), preventing tramp oil emulsification in coolant sumps and extending cutting fluid service life. Supplied in UN 208L steel drums and 1,000L IBC totes.
Verified 208L Steel Drum Staging & Container Loading Bay
Photographic evidence from our Quanzhou plant floor and export container stuffing bay. Every batch is blended via automated mass-flow metering, sealed with waterproof tamper-evident bungs, and labeled with full batch test certificates.
Laboratory Physical & Chemical Parameters (Typical Test Values)
Every batch blended at our Quanzhou plant is certified against international testing standards before filling into UN 208L steel drums.
| Test Parameter | Test Method | ISO VG 68 | ISO VG 220 |
|---|---|---|---|
| Kinematic Viscosity @ 40°C (mm²/s) | ASTM D445 | 68.4 | 220.8 |
| Kinematic Viscosity @ 100°C (mm²/s) | ASTM D445 | 8.9 | 19.4 |
| Viscosity Index (VI) | ASTM D2270 | 102 | 98 |
| Flash Point, COC (°C) | ASTM D92 | 232 | 252 |
| Pour Point (°C) | ASTM D97 | -18 | -12 |
| Static-to-Kinetic Friction Ratio | Cincinnati Test | 0.96 | 0.94 |
| Timken OK Load (lbs) | ASTM D2782 | 55 | 60 |
| Four-Ball EP Weld Load (kgf) | ASTM D2783 | 250 | 280 |
| Four-Ball Wear Scar (mm, 40 kgf, 1h) | ASTM D4172 | 0.35 | 0.34 |
| Copper Strip Corrosion (3h @ 100°C) | ASTM D130 | 1a | 1a |
| Demulsibility with Aqueous Coolants | ASTM D1401 | < 15 min | < 15 min |
Machine Tool Guideway Applications & Metallurgy
Engineered specifically for high-stress industrial machinery, minimizing friction coefficients and extending component service life.
Cast Iron on Cast Iron Guideways
Forms an ultra-tenacious boundary layer that prevents microscopic welding and metal transfer on scraped box ways.
Cast Iron on Turcite-B / PTFE Slideways
Guarantees smooth sliding velocity without polymer degradation or plastic composite swelling.
Linear Rolling Guideways & Ball Screws
ISO VG 68 supplies low resistance and superior anti-wear protection for linear guide rail trucks and recirculating balls.
Heavy Vertical Columns & Boring Mill Ways
ISO VG 220 provides high film thickness and zero drip-off on vertical columns of heavy vertical turning lathes.
Batch Quality Control & Standard Verification
Strict five-stage quality checkpoint from raw base oil tank unloading to finished drum sealing.
Stick-Slip Friction Ratio Verification
Every batch tested to ensure static/kinetic friction ratio < 0.98 to prevent micro-chatter.
Coolant Separation & Tramp Oil Audit
Tested with standard semi-synthetic emulsions to guarantee rapid flotation without scum.
Tackifier Polymer Uniformity Test
Ensures uniform adhesive stringing behavior without nozzle plugging in central lube meters.
24-Month Sealed Retention Archive
Archived 1L production samples stored with full QA lot traceability.
Export Packaging, Palletization & Container Loadability
Supplied in standard UN 1A1 cold-rolled steel 208L drums (80 drums per 20GP container = 16,640 liters) and 1,000L IBC totes.
Frequently Asked Technical & Procurement Questions
Clarifications on viscosity grades, synthetic formulations, oil drain intervals, and container freight.
When should I use ISO VG 68 versus ISO VG 220 slideway oil?
Why is coolant demulsibility critical for slideway oil?
Can FOSS L-HG replace Mobil Vactra No. 2 or Shell Tonna S2 M 68?
Request Direct Factory Quotation & Technical Dossier
Receive competitive FOB Xiamen / CIF port container pricing, batch Certificate of Analysis (CoA), and sample dispatch confirmation.