TOPQuestions and AnswersWhich Bell Hammer product helps reduce stick-slip on a centerless grinder’s angular slide using hydrostatic lubrication (no Turcite, No.10 oil)? Also, what additive concentration is recommended?
最終更新日 : 2025/10/16

Which Bell Hammer product helps reduce stick-slip on a centerless grinder’s angular slide using hydrostatic lubrication (no Turcite, No.10 oil)? Also, what additive concentration is recommended?

Recommended product
For suppressing stick-slip at sliding startup, LS Bell Hammer Gold (concentrate) is recommended.

Reason
・LS Bell Hammer Gold minimizes the difference between static and kinetic friction coefficients (μs–μk), maintaining a stable oil film even in boundary lubrication zones.
・It prevents oil film breakdown under low-speed hydrostatic conditions, effectively reducing chatter and micro-vibration during motion initiation.
・Even on steel sliding surfaces without Turcite lining, its extreme-pressure film smooths the surface and sustains long-term stable lubrication.

Usage method
・Product: LS Bell Hammer Gold (concentrate)
・Procedure:
 1. Initially, apply a thin, even coat of the concentrate directly to the slideway surface.
 2. After stabilization, add about 5% of LS Bell Hammer Gold to the hydrostatic oil (viscosity No.10).
・Reapplication interval: Check performance after 1–2 weeks initially, then reapply during monthly maintenance.
・Note: Avoid exceeding 10% additive ratio, as it may increase oil viscosity.

Technical note
In hydrostatic lubrication systems, oil film thickness is typically stable, but at ultra-low speeds or during stop/restart cycles, momentary film disruption can occur—causing friction fluctuation and stick-slip.
LS Bell Hammer Gold’s rapid reformation of its protective film makes it particularly effective in minimizing these transient friction changes.

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