Multiple Options Getting into Confusion?

Gearboxes do not fail for no reason. Usually when a gear box breaks down soon gets too hot or cannot handle the work it is because the gear box was not the right one to use in the first place. The gear box was the type, the wrong size or it was put in without checking if it was suitable for the job.

This kind of thing happens a lot. When a gear box fails it is not a matter of replacing the gear box. It means that work has to stop people have to be called in to fix the problem and sometimes other things that are connected to the gear box get damaged. If you get the right gear box from the start you can avoid a lot of problems on.

So let us talk about how to choose the gear box. We will discuss what a gear box does, which type of gear box is best, for which kind of job and what you need to know when you are ready to buy a gear box.

What a Gear Box Is Actually Doing

A gear box takes the speed that comes out of a motor and reduces it to a working speed while it also increases the torque at the output end. The motor that you are using might spin at 1450 RPM. The conveyor that this motor is driving needs to run at 25 RPM with a lot of pulling force behind it. The gear box is what makes this conversion happen in an continuous way shift after shift.

If you did not have a gear box you would need a motor that’s really large and really slow and this would be completely impractical for most setups. Gear boxes are what make it possible to use sized motors for heavy industrial jobs. This is why you will find gear boxes inside everything that moves in a plant, such, as conveyors, mixers, cranes, pumps, packaging machines, cement equipment and water treatment systems.

There are types of gear boxes and they work in very different ways. Just because the numbers match on paper it does not mean that you can use any type of gear box. The gear box that you choose has to be the type or it will not work properly. Picking the type of gear box even if it has the right ratio is where most people make mistakes when they are selecting a gear box.

A Quick Selection Tip Before You Start Looking

Before you start comparing any gear box models you need to have a things ready. You need to know the input speed from your motor in RPM. You also need to know the output speed or torque you need at the driven shaft.. You need to think about how the gear box will be mounted. Once you have these things everything else, like the type of gear box and the size will be easy to figure out. If you are replacing a gear box you can usually find most of the information you need on the nameplate. If you are getting an one you just need to describe what you will be using the gear box for and that is enough to get started with the selection process.

Where Each Type Actually Gets Used

Cement Plants & Quarries

Cement production is one of the places for a gearbox to work. Bucket elevators, ball mills, rotary kilns, conveyors all run heavy loads every single day, in dusty and hot conditions. The gearbox does not get a chance to warm up. It has to be ready to go from the first minute and stay reliable for many years.

Bevel helical gearboxes are made for this kind of work. They provide a right-angle drive can handle continuous torque and have a long service life under heavy load. Pokhara Motors offers the Bevel Helical BH/MBH and the Bevel Helical AK gearboxes. The Bevel Helical AK gearbox can handle up to 50,000 Nm of torque making it suitable for the heaviest drives in a cement plant or quarry.

Food & Beverage Processing

Bottling lines and filling machines and packaging conveyors and dough mixers need to have speed consistency. This is very important for these things. When a production line is running at a pace any changes in the gear box output can affect the quality of the product and how well the line is working. These applications need to run steadily.

Inline helical gear boxes are usually used for food and beverage. They are very good because they run smoothly and quietly. They also keep the output speed steady when the power is changing. This is what makes them so good, for food and beverage production.

Pokhara Motors have the Inline Helical NHL/MNHL and the Inline Helical AR. This is enough for most of the things that are needed for food processing drive requirements. hey cover torque up to 18,000 Nm and power up to 200 kW. The Inline Helical NHL/MNHL and Inline Helical AR from Pokhara Motors are very useful, for food processing drive requirements.

Water Treatment & Desalination Plants

Sludge scrapers, clarifier drives and filter press drives do not move quickly. They turn slowly and steadily for a time without stopping. The gear box does not work in bursts. It holds torque continuously at a speed and it needs to be reliable throughout the entire cycle without overheating.

Worm gear boxes are good for this job. They are small and often lock themselves so the load does not move backward if the motor stops. They work well with reductions at slow speeds. Pokhara Motors has the Worm Gear Box MI/MU and the Worm Gear Box AWG/AVF/AW for these applications, and the Helical Worm AS when high efficiency’s needed in a small space.

Construction & Concrete Mixing

Transit mixer trucks are a tough application. The drum drive runs loaded and unloaded, in heat, on uneven ground, all day. It’s not a controlled factory environment it’s a construction site with all the conditions that come with it.

The Transmittal Mixer / Truck Mixer Gearbox-300 is purpose-built for concrete mixer drum drives, covering Bonfiglioli 2/3/4.5M3 mixer and truck mixer configurations. It’s designed specifically for this duty cycle, which is why it holds up where a standard industrial gear box wouldn’t.

Ports, Warehouses & Material Handling

Overhead cranes and hoists well as dock conveyors and stacker reclaimers are used for material handling. This kind of work can put a lot of stress on the equipment. For example when a crane grab hits a pile of stuff or a loaded conveyor starts moving from a standstill the gearbox feels the impact. It needs to handle this stress without any problems.

When it comes to lifting loads the Helical Worm AS gearbox is a good choice. It has a self-locking feature, which means the load will stay in place when the motor stops working. This gearbox also works efficiently compared to a standard worm gearbox.

For conveyor head shaft drives that’re really heavy the Shaft Mounted AF gearbox is a good option. It can be mounted directly onto the shaft, which makes the installation cleaner and easier. There is no need for a coupling or base plate. This gearbox can handle, up to 18,000 Nm of torque and 200 kW of power.

Oil, Gas & Petrochemical Facilities

Pump drives and agitator drives on processing tanks and compressor auxiliaries are really jobs. These pump drives and agitator drives work in harsh conditions. They have to deal with heat and humidity. Sometimes they even have to work in conditions. The gear box has to work all the time no matter what.

When you need a lot of torque in a space that is sealed and can handle sudden shocks planetary gear boxes are the way to go. This is because the load is spread across gear sets at the same time. It does not just go through one pair of gears. This means planetary gear boxes can handle torque in a smaller space. Planetary gear boxes are the choice for pump drives and agitator drives. Pokhara Motors has Planetary NRG/MNRG gear boxes that can handle, up to 30,000 Nm. For right-angle agitator drives the Bevel Helical AK is often used in this field.

Textile, Printing & Light Manufacturing

These industries often need to adjust the output speed while the machine is still running. They want to make changes without stopping the machine or adding drives. This is a need that not all gearboxes can fulfill.

Mechanical variators solve this problem with a mechanical setup. When you turn the handwheel the output speed changes smoothly within its range. You don’t need any electronics or programming. Pokhara Motors offers the Mechanical Variator MK/MKF and the Mechanical Variator AMV for these type of applications.

Agriculture & Irrigation Equipment

Agricultural equipment, like feed augers and grain conveyors and irrigation pump drives have to work hard when they are running. Agricultural equipment needs to be reliable because if it breaks down in the middle of the season it can be really expensive. It is just as important that the equipment is easy to install and maintain as it is to have specifications.

For agricultural drives shaft mounted gear boxes are a good choice. They can be attached directly to the shaft that is being driven so you do not need a base or coupling. This makes it easy to put them in. The Shaft Mounted PL/PD is used for the power levels that most agricultural equipment uses. It comes in a variety of reduction ratios so it can be used with types of machines like different agricultural equipment.

What to Have Ready Before You Inquire

You do not have to be an expert to get the gear box but having some information ready will make things a lot easier. You should know the motor speed in revolutions per minute. You should also know the required output speed or the reduction ratio if you already know what that is. If you have it you should know the torque at the gear box output shaft. If you do not have that you can just tell us about the load and what the gear box will be used for. You should know how the gear box will be mounted. Will it be foot mounted, shaft mounted or flange mounted.. You should know the motor power in kilowatts.

If you have used a brand or series of gear boxes before you should tell us about that. Most of the time we can find something or the same thing in our stock without any problems.. If you are not sure about any of these details you can just tell us about the machine and what it does. The team, at Pokhara Motors can help you figure out what gear box you need from there.

Pokhara Motors – Local Stock Across the Region

Pokhara Motors leading Gear Box Supplier in UAE, Saudi Arabia, Qatar and Oman stocks the full gear reducer range with physical offices and local stock in UAE, Saudi Arabia, Qatar, and Oman. Whatever the application is cement, food, water treatment, construction, ports, oil and gas, textiles or agriculture – the right gear box is available locally and the team is on hand to help match it to the job.

To get started contact the office nearest to you. Have your specifications ready. Choosing the right gear box is easy with their help. The team at Pokhara Motors will help you find the right Gear Box. They have Gear Boxes in stock in the UAE, Saudi Arabia, Qatar and Oman. The Gear Box experts, at Pokhara Motors are here to assist you. You can reach out to Pokhara Motors for all your Gear Box needs.

Contact Pokhara Motors

UAE – Head Office Industrial Area 1, Sharjah +971-6-5668076 / +971-6-5668176 sales@pokharamotors.com

Saudi Arabia Dammam & Jeddah +966-53 965 4113 (Dammam) / +966-53 038 0546 (Jeddah) ksa@pokharamotors.com

Qatar GWC Logistic Park-C, Birkat Al Awamer +974-66163852 salesqa@pokharamotors.com

Oman Ruwi High Street, Muscat +968 7949 7973 oman@pokharamotors.com