Mobil Vactra Oil No. 4
Slideway oil for large machine tools, vertical and inclined ways, ISO VG 220
ISO VG 220
Mobil Vactra Slideway lubricants are high-quality products specifically designed for lubricating linear motion guides, ball screws and slideways on high-precision machine tools and metal-processing machines. Formulated from high-quality base stocks and an advanced additive system, they deliver controlled frictional properties for high-precision machining, compatibility with aqueous metalworking fluids, and corrosion protection of parts and equipment. Their unique additive package gives excellent frictional characteristics across steel-on-steel and steel-on-polymer way materials, reducing stick-slip and chatter for smooth, uniform motion. Available in ISO VG 68 and 220 grades, Mobil Vactra Slideway is recommended for horizontal slideways on small-to-medium precision machine tools, circulating application in larger machines, moderate-duty hydraulic use, and lubrication of ball screws, linear guides, headstocks and translating screws. Its adhesiveness resists coolant wash-away, while outstanding separability from aqueous coolants helps extend coolant life and machine precision. The series carries Fives Cincinnati P-47 and P-50 recommendations and meets China GB 11118.1-2011 L-HG, DIN 51502:1990-08 CGLP, and ISO 6743-13 L-GA/L-GB classifications, and has been tested for compatibility with the Mobil Vactra Oil Numbered Series.
Fives Cincinnati P-47 — ISO VG 68 slideway oil
An approval number from the Fives Cincinnati list of fluids for use in its own machine tools. It covers slideway oils, additised so the slide moves without stick-slip and is not washed off by the coolant.
Fives Cincinnati P-50 — ISO VG 220 slideway oil
An approval number from the Fives Cincinnati list of fluids for use in its own machine tools. It covers slideway oils, additised so the slide moves without stick-slip and is not washed off by the coolant.
| Property | Typical value | Method |
|---|---|---|
| Copper strip corrosion, 3 h, 100 CRating | 1B | ASTM D130 |
| FZG Scuffing, Fail load stage, A/8.3/90 | 12 | ISO 14635-1 |
| Flash point, Cleveland Open Cup°C | 255 | ASTM D92 |
| Kinematic viscosity @ 40 Cmm2/s | 218.4 | ASTM D445 |
| Pour point°C | -12 | ASTM D97 |
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