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Bearings & Power Transmission
Gear Units & Reducers
Gear units and reducers convert the high speed of an electric motor into the low speed and high torque that conveyors, mixers, crushers, pumps and cranes need. Seven Star LLC, an independent supplier in Muscat, supplies gear units and reducers from Dodge, Flender and KRACHT to mining, cement, water, bulk handling and process plants in Oman and the GCC.
Read the full category guide- 4 products
- 3 brands
Category guide
About Gear Units & Reducers
Gear units and reducers convert the high speed of an electric motor into the low speed and high torque that conveyors, mixers, crushers, pumps and cranes need. Seven Star LLC, an independent supplier in Muscat, supplies gear units and reducers from Dodge, Flender and KRACHT to mining, cement, water, bulk handling and process plants in Oman and the GCC.
Types of gear unit in this category
Shaft-mount reducers like the Dodge Torque-Arm II mount directly on the driven shaft, which suits belt conveyors and saves foundations and couplings. Concentric and parallel-shaft gear units such as the Dodge Maxum XTR and MagnaGear XTR deliver very high torques for heavy conveyors and mills, and the Flender ONE platform and H-series units cover industrial applications with cooling options for hot environments. Worm gear reducers like the Dodge Tigear-2 give compact right-angle drives, and modular reducers and gearmotors such as the Dodge Quantis combine motor and gearbox for general machinery. KRACHT drive technology products cover hydraulic and mechanical drive components.
How to select a gear reducer
Define the input power and speed, the output speed or ratio, and the required output torque. Apply a service factor for the type of load, hours of operation and starts per hour. Check the mounting position, shaft arrangement (solid, hollow or shaft-mount), and overhung and thrust loads. For hot climates check thermal capacity, since a reducer may need a fan, cooling coil or oil cooler to stay within temperature at full load. Confirm lubrication and sealing for dusty sites.
Data needed for a quotation
Send the nameplate data, or power, input and output speeds, torque, service factor, mounting and quantity.
What to include in your inquiry
These details let us quote the right item the first time.
- Manufacturer and model or part number
- Quantity
- Datasheet or nameplate photo
- Delivery location
- Required delivery date
Missing some of them? Send what you have. A nameplate photo or an old part number is enough to start.
Brands in Gear Units & Reducers
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Request a Quote for Gear Units & Reducers
Looking for a specific model, part number or brand in Gear Units & Reducers? Send us your requirements and quantities. Seven Star LLC sources genuine industrial equipment for customers across Oman and the GCC and replies with a formal quotation.
- Genuine OEM products
- Supply across Oman & the GCC
- Formal quotation from our sales team
Free, no-obligation quotation · takes about 1 minute
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Frequently Asked Questions
What is a service factor?
A multiplier applied to the rated power or torque to allow for shock loads, long operating hours and frequent starts. A conveyor running 24 hours a day with moderate shock needs a higher service factor than a light, intermittent drive.
Why use a shaft-mount reducer on a conveyor?
It mounts directly on the pulley shaft and is held by a torque arm, so no separate base, alignment or output coupling is needed.
What is thermal capacity?
The power a gear unit can transmit continuously without its oil exceeding the allowed temperature. In hot climates it can be lower than the mechanical rating, so cooling may be required.
When is a worm reducer a good choice?
For compact right-angle drives with moderate power and high ratios. Its efficiency is lower than helical or bevel-helical units, so it is less suited to large continuous drives.
What should I send for a quotation?
The existing nameplate data, or power, input and output speed, torque, application, service factor, mounting and quantity.