Page 28 - Olipes Industrial Maintenance

Plain bearings • High-speed headstocks

Plain bearing (bushing): an element designed to reduce the friction of a shaft in movement by means of smooth sleeves which serve as
support, generating a sliding friction.
High-speed headstock: a mechanical element composed of watertight bearings, bushings and gears in sealed cases which rotate at
extremely high speeds. Generally used in machine tools, these parts require a high-speed factor grease (speed factor > 1,000,000) or
low-viscosity oils with a high load capacity and a high level of purity (Classification ISO 4406: recommended: 14/12/9 or NAS 1638: 3).

RECOMMENDATIONS
In the event the bushings are lubricated with grease, the recommendations for the lubrication of bearings and pulleys should be
followed. If the bushings are lubricated with oil the recommendations for the lubrication of gearboxes should be followed, with the
exception of bushings operating at extreme revolutions and in high-speed headstocks, where the recommendations set forth below
should be followed:

Lubricating with oils Lubricating with greases

High speed High speed
MAXIFLUID VG MAXIGRAS COMPLEX - SP46

Low-viscosity lubricating oils with a high load capacity A Synthetic EP Complex Grease.
and high degree of purity (ISO Classification 4406: NLGI 2 DIN KPHC2K-50 ISO-L-XECEB-2 -50ºC to +120ºC (+140ºC)
recommended: 14/12/9 or NAS 1638: 3) formulated with Speed Factor: 1,000,000 mm/min.
highly refined mineral bases and state-of-the-art additives Designed specifically for the lubrication of ball bearings
to guarantee the maximum durability of the lubricant, and precision needles operating at high speeds (speed
the minimal wear of the lubricated parts and low energy factor > 1,000,000 mm/min.) and friction bushings.
consumption, reducing the temperature by up to 10º C in Recommended for use in conical precision gears, machine
comparison with conventional hydraulic oils. tool headstocks, support bushings and elements subjected
DIN 51517/2-HLP ISO 6743/4-HM ISO/TR 3498 HM US STEEL 224 to high levels of heat stress.

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