Var-Spe

Var-Spe

Var-Spe is an innovative Italian manufacturer globally recognized for its proprietary hydrostatic transmission technology and high-performance fluid-based speed variators. At Seven Star LLC, we provide Var-Spe’s specialized K Series and Heavy Series hydrostatic variators, engineered to vary the speed of electric motors physically through fluid dynamics without relying on electronic variable frequency drives (VFDs). Operating efficiently within a power range from 0.37 kW to 22 kW, these systems provide exceptionally high torque at low RPMs and full rotational reversal capabilities. Certified to strict ATEX standards for explosive atmospheres, Var-Spe products are ideal for reliable deployment in the demanding oil and gas, chemical processing, and material handling sectors across Oman and the GCC.

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Var-Spe K2 Series Compact Hydrostatic Speed Variator 0.37kW to 0.75kW

Var-Spe K2 Series Hydrostatic Speed Variator

Var-Spe

In stock

Frequently Asked Questions

What advantages do Var-Spe hydrostatic drives offer over electronic variable frequency drives (VFDs)?
Var-Spe hydrostatic variable speed drives excel in harsh environments by offering robust, purely mechanical speed regulation that is highly resistant to dust, moisture, and extreme temperatures. Unlike VFDs, they provide high starting torque from zero speed and can safely stall under heavy loads without electrical burnout.
Are Var-Spe hydraulic variators safe to use in explosive (ATEX) atmospheres?
Yes, because Var-Spe variators operate on a purely hydraulic and mechanical basis without the need for electronic components, they are inherently spark-free. This makes them highly suitable and fully certifiable for use in ATEX Zone 1 and Zone 2 hazardous areas in chemical and petrochemical plants.
How does a Var-Spe drive achieve speed variation from a constant speed electric motor?
The unit consists of a variable displacement hydraulic pump driving a fixed or variable displacement hydraulic motor in a closed circuit. By adjusting the pump's swashplate angle, the flow rate changes, allowing for infinite, stepless output speed control from zero to maximum in both rotational directions.
What maintenance is typically required for Var-Spe hydrostatic transmissions?
Maintenance is relatively straightforward, primarily revolving around regular monitoring and replacement of the specialized hydraulic fluid and filters. Ensuring fluid cleanliness is critical, as it directly impacts the longevity of the precisely machined radial pistons and internal control valves.
Can Var-Spe drives be synchronized for multi-axis industrial machinery?
While inherently mechanical, Var-Spe drives can be equipped with pneumatic, hydraulic, or electronic proportional controls. This allows them to be synchronized within complex automated machinery, such as textile winders or heavy-duty conveyor systems, providing precise speed coordination.