Flender H2SV 09 Gear Unit with Cooling Coil, Oil Tank & Taconite Seal

Overview

The Flender H2SV 09 is a two-stage helical gear unit in vertical mounting configuration, part of Siemens Flender’s well-established H..V industrial gear unit series, supplied complete with cooling coil, oil tank, and Taconite shaft seal for demanding continuous-duty applications. It is used by process and heavy-industry operators across Oman and the GCC on equipment such as agitators, conveyors, and pumps where a compact, vertically-mounted gear reducer with reliable oil-cooling is required.

Size 09 sits within Flender’s H..V range covering sizes 1 to 22, and at roughly 830 kg (without oil and add-on components) represents a mid-range unit suited to substantial industrial torque and power transmission duty rather than light-duty applications.

Operating Principle

As a two-stage helical unit, the H2SV 09 reduces input speed through two sets of case-hardened, ground helical gear teeth, delivering a rigid, low-noise, low-vibration power transmission path suited to continuous industrial operation. The unit uses splash lubrication as standard, where all teeth and bearings are submerged in oil, with an oil-equalizing tank to accommodate thermal expansion of the oil volume as the unit heats up under load.

Engineering Design of the Flender H2SV 09

This specific configuration is supplied with a cooling coil using water circulation to remove heat from the oil sump, an important addition for gear units operating at high duty cycles or in hot ambient conditions typical of Gulf industrial sites, where air-only cooling may not be sufficient to keep oil temperature within safe limits. The unit also includes a Taconite (contact) shaft seal, providing robust sealing against dust, moisture, and process contamination at the output shaft, and a dedicated oil tank supporting the lubrication and cooling circuit. The vertical (V) mounting and solid (S) output shaft configuration suit installations such as vertically mounted agitators and pumps where the driven equipment sits directly below or above the gear unit.

Key Features

• Two-stage helical gear unit, vertical mounting (V), solid output shaft (S)
• Case-hardened, ground helical gear teeth for low noise and vibration
• Splash lubrication with oil-equalizing tank
• Cooling coil with water circulation for high-duty-cycle applications
• Taconite shaft seal for contamination resistance
• Approx. 830 kg unit weight (without oil/add-ons)
• Rigid housing design for excellent noise and temperature characteristics

Industrial Applications

Across Muscat, Sohar, and Salalah, the Flender H2SV 09 is used in sewage and water treatment plants, chemical processing facilities, and conveyor and material-handling systems in iron, steel, and heavy manufacturing industries — the same duty classes the H..V series is broadly specified for. Its cooling-coil-equipped configuration is particularly suited to continuous, high-load operation in the region’s high-ambient-temperature industrial environments.

The unit’s vertical mounting and robust sealing make it a practical choice for agitator and mixer drives in process and wastewater applications, and for vertically configured pump and conveyor drives where a compact footprint is required.

Technical Specifications

Request a Quote for Flender H2SV 09 Gear Unit with Cooling Coil, Oil Tank & Taconite

Seven Star LLC supplies the Flender H2SV 09 gear unit as an experienced supply partner to process and heavy-industrial operators across Oman and the GCC. Contact our engineering team for a formal quotation and application support for your vertical gear drive requirement.

Identifying a Replacement Flender Gear Unit

The designation H2SV 09 describes the series, stages, shaft and size, but it does not by itself define the ratio, shaft dimensions or accessories of a particular unit. For an exact replacement or a spare gear unit, take the details from the nameplate of the installed unit:

• The full type designation and the order or serial number, which identify the original build.
• The transmission ratio, rated power or torque and input speed stated on the plate.
• The oil grade and quantity specified, and the mounting position.
• Details of the cooling coil, oil tank, seals and any monitoring accessories fitted.

If the nameplate is damaged, provide photos of the unit, the shaft ends and the foundation arrangement, along with the driven equipment data.

Installation and Commissioning

Good installation practice has a large effect on gear unit life. Mount the unit on a rigid, level foundation, and align the input and output couplings within the limits given in the manufacturer’s documentation, checking alignment again once the unit has reached operating temperature. Fill with the specified oil grade to the correct level before the first start, connect the cooling coil water supply and confirm flow, and make sure breathers and any drains are fitted correctly for the vertical mounting position. During the first hours of operation, monitor oil temperature, noise and vibration, and check for leaks at seals and joints.

Maintenance and Troubleshooting

• Oil condition: sample and change oil at the intervals recommended for the unit, and more often in dusty or very hot conditions.
• Cooling coil: check water quality and flow; scaling or fouling inside the coil gradually reduces cooling and raises oil temperature.
• Temperature rise: high oil temperature usually points to overload, low oil level, wrong oil grade or reduced cooling water flow.
• Noise and vibration: trend readings over time; a change in pattern can indicate bearing wear, gear damage or misalignment.
• Seals: inspect the output shaft seal area regularly, especially on agitator drives exposed to process splash.

Sourcing Through Seven Star LLC

Seven Star LLC sources genuine Flender gear units and spare parts for water, chemical and heavy industry customers. Send the nameplate details and your application data through our quote request, and we will confirm the configuration, documentation and delivery time.

Browse the full Flender range or see more Electric Motors & Pumps products supplied by Seven Star LLC in Oman and the GCC.