IS Multi-turn Gearbox Series

The IS series of multi-turn operators has been designed with
customer stocking in mind, and features a removable output
sleeve to facilitate spindle machining.

Operating temperature normally ranges from -40 to 120 °C,
although other temperature ranges are available on request.
Standard input (for actuation) and output flanges are to
ISO5210. However, equivalent standards such as DIN can
be supplied.

Application

Rotork Gears IS series operators are multi-turn devices
intended for the operation of gate, globe, sluice and penstock
valves. The gearboxes are suitable for manual and motorised
applications.

Environmental Specification

Enclosure IP67 standard suitable for submerged duty up to a
depth of 1 metre for 30 minutes.
Enclosure IP68 continuous submerged duty up to a maximum
depth of 15 metres.

Features

• Totally enclosed gearing
• Grease filled for life & fully sealed
• Comprehensive gear ratios
• Removable output sleeve
• Spur and bevel combinations available
• Input gear mounted on ball bearings

Options

• Upward or downward oriented input
• Auxiliary spur/bevel input reducers
• Input flanges for motorisation
• Two speed spur input reducers
• High & low temperatures
• Padlockable handwheels
• Nuclear
• IP68
• Buried duty
• Raw sewage
• Mechanical dial position Indicator
• Flexible extensions
• Emergency fire duty e.g. to ISO 10497.