Bar and chain lubricant is a specialised oil designed to scale back friction and put on between the chain and information bar of a chainsaw. These lubricants usually possess a comparatively excessive viscosity to stick successfully to shifting elements and forestall untimely ejection because of centrifugal power generated throughout operation. The particular numerical worth related to viscosity, typically expressed in centistokes (cSt) or Saybolt Common Seconds (SUS), signifies its resistance to move. Greater numbers signify thicker, extra viscous fluids.
Sufficient lubrication is important for the environment friendly and secure operation of a chainsaw. Inadequate lubrication results in elevated friction, leading to overheating, decreased chopping effectivity, accelerated put on on the chain, bar, and sprocket, and probably untimely failure of those parts. The right lubricant additionally protects towards corrosion and helps to flush away particles like sawdust and wooden chips, which might additional contribute to put on. Traditionally, numerous oils have been used, however fashionable formulations provide improved efficiency traits, together with tackifiers for enhanced adhesion and components for elevated safety towards rust and oxidation.