KMA series (adjustable, dial-tuned); KHA series (heavy-duty adjustable)
Coverage KMA covers the standard adjustable range across small-to-medium bores (model designations include the bore and stroke, e.g. KMA16-12, KMA25-25, KMA27-25). KHA is the heavy-duty adjustable variant for medium-to-heavy loads and larger bores (e.g. KHA42-25, KHA42-50, KHA64-50, KHA64-100); the KHA dial rotates through a 0-180 degree adjustment range each way. KSA is KOBA's straight/mid-class line. [VERIFY] per-model energy-absorption, stroke, and effective-weight-range tables against KOBA engineering datasheets — kobapage.com publishes the series list but not model-level spec tables.
KOBA's adjustable shock absorbers are the KMA series — a hydraulic absorber with a stepped adjustment dial that tunes damping force to the impact velocity — and the KHA series, a larger heavy-duty adjustable line for medium and heavy loads. Both use the standard internal arrangement of piston, check valve, accumulator, multiple orifices, and return spring; on impact the piston forces oil through the orifice set to generate the damping force, and the dial varies the effective orifice restriction.
Why KOBA here KOBA delivers ISO-9001 industrial shock absorbers across the full adjustable and heavy-duty range at a value-tier price point, making proactive spec-in on cylinder quotes economical — the unit cost is low enough that adding one per cylinder position pays back quickly in extended cylinder life. The KMA/KHA breadth covers light changeover stations through heavy actuator stops from one supplier.