Product Description
UMC is the industry leader in gearbox technology. Over our 40 year history we have introduced many industry changing gearboxes such as the patented TNT gearbox, the 740, the 760, the 775 and more. We continue to define and redefine industry standards for gearbox performance, quality, features and technology. Our gearboxes are purpose built to do the job. Never over-engineered.
UMC stands behind its products and is committed to manufacturing the best products for a global market.
740-U 50:1 Ratio
Designed for longer spans, larger wheels, and heavier towers.
Features and Benefits
- 2.25 inch output shaft
- 50:1 gear ratio
- Cartridge input and output seals
- Larger input bearings
- Input shaft guard
- External seal protectors for input and output seals
- Top oil fill plug
- Universal mounting pattern
- Full cycle expansion chamber with stainless steel cover
- Filled with extreme pressure worm gear oil
- Steel output shaft and input shaft
- Tapered roller bearings
- Includes carriage bolts and nuts
- Dual ended input shaft
740-UV 52:1 Ratio
Designed for longer spans, larger wheels and heavier towers where an extended output shaft is required.
This gearbox has all the same capabilities, features and benefits that the standard 740 has with a few tweaks. The output shaft is extended, the gear ratio is 52:1 and the input shaft is made of ductile iron with a 25° pressure angle allowing this gearbox to be used on center CHINAMFG and lateral move/ linear systems that come standard with these specifications.
Features and Benefits
- 2.25 inch extended output shaft
- 52:1 gear ratio with 25° pressure angle
- Cartridge input and output seals
- Larger input bearings
- Input shaft guard
- External seal protectors for input and output seals
- Top oil fill plug
- Universal mounting pattern
- Full cycle expansion chamber with stainless steel cover
- Filled with extreme pressure worm gear oil
- Steel output shaft and ductile iron input shaft
- Tapered roller bearings
- Includes carriage bolts and nuts
- Dual ended input shaft
760-UV Gearbox
Designed for corner systems and lateral move carts where an extended output shaft is required
Growers typically use UMC’s 760-UV gearbox for the most extreme applications where an extended output shaft is required. The gearbox is designed for higher annual hours of operation while handling the heavy loads experienced on corner systems and lateral move carts as well as the most extreme field conditions where wheel rutting is prominent, soil is heavy, and tower weights are higher.
The UMC 760-UV final drive gearbox is our largest and most durable gearbox with an extended output shaft. It features a larger-diameter bull gear than the standard 740 series to handle 20% higher torque. It also features a 2.5″ output shaft to accommodate more overhung load. It is designed for use on center pivots, corners, lateral move/ linear irrigation systems and carts where a 52:1 gear ratio and extended output shaft are standard specifications.
Features and Benefits
- 2.5″ output shaft
- 52:1 gear ratio with a 25° pressure angle
- Unique dual input and output seal design
- 20% more torque capacity than the standard 740
- Bronze gear optional
- Larger input bearings
- Input shaft guard
- External seal protectors for input and output seals
- 11-Bolt mounting pattern
- Full cycle expansion chamber with aluminum cover
- Filled with extreme pressure worm gear oil
- Steel output shaft and ductile iron input shaft
- Tapered roller bearings
- Includes carriage bolts and nuts
- Dual ended input shaft
TNT-2 Gearbox
Designed for applications where the irrigation system may need to be towed
This gearbox is the perfect solution for a towable irrigation system. Growers typically prefer this gearbox over a gearbox with a towable hub. Simply disengage the worm and tow your system to its working location, then re-engage the worm and you are ready to run. The CX coupler is the perfect compliment for the TNT-2 gearbox due to the ability to control coupler disengagement at the gearbox.
The UMC patented TNT-2 final drive gearbox is designed specifically for applications where a center CHINAMFG or lateral move/ linear irrigation system needs to be towed. The gearbox provides the ability to disengage the worm gear and allows users to move systems from 1 area to another without requiring a Towable Hub add on.
Features and Benefits
- 2.25″ output shaft
- 50:1 gear ratio
- Dual input seals with triple lip output seals
- Bronze gear optional
- Input shaft guard
- External seal protectors for input and output seals
- Top oil fill plug
- 11-Bolt mounting pattern
- Full cycle expansion chamber with stainless steel cover
- Filled with extreme pressure worm gear oil
- Steel output shaft and input shaft
- Tapered roller bearings
- Includes carriage bolts and nuts
- Dual ended input shaft
760-UV Bronze Gearbox
Designed for the most extreme conditions where an extended output shaft is required.
Growers typically use The UMC 760-UV bronze gearbox for the most extreme applications where an extended output shaft is required. The gearbox is designed for higher annual hours of operation while handling the heavy loads experienced on corner systems and lateral move carts as well as the most extreme field conditions where wheel rutting is prominent, soil is heavy, and tower weights are higher.
The UMC 760-UV Bronze final drive gearbox is our largest and most durable gearbox with an extended output shaft designed for the most extreme growing conditions. It features a high strength aluminum bronze bull gear and a heat treated steel worm gear giving it a much higher load capacity than the standard 760-UV. Additionally, this gear combination greatly reduces gear wear, extending the useful life of the gearbox. It also features a 2.5″ output shaft to accommodate more overhung load. It is designed for use on center pivots, corners, lateral move/ linear irrigation systems and carts where a 52:1 gear ratio and extended output shaft are standard specifications.
Features and Benefits
- 2.5″ output shaft
- 52:1 gear ratio with a 25° pressure angle
- Unique dual input and output seal design
- Bronze Gear
- Heat Treated Steel Worm Gear
- Larger input bearings
- Input shaft guard
- External seal protectors for input and output seals
- 11-Bolt mounting pattern
- Full cycle expansion chamber with aluminum cover
- Filled with extreme pressure worm gear oil
- Steel output shaft
- Tapered roller bearings
- Includes carriage bolts and nuts
- Dual ended input shaft
- Also Available Assembled in the USA
CHINAMFG is the industry leader in gearbox technology. Over 37 year history they have introduced many industry changing gearboxes such as the patented TNT gearbox, the 740, the 760, the 775 and more. CHINAMFG continue to define and redefine industry standards for gearbox performance, quality, features and technology. CHINAMFG gearboxes are purpose built to do the job. Never over-engineered.UMC stands behind its products and is committed to manufacturing the best products for a global market.
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| Application: | Motor, Agricultural Machinery, Agricultural |
|---|---|
| Function: | Speed Reduction |
| Hardness: | Hardened |
| Type: | Worm and Wormwheel |
| Material: | Cast Iron |
| Manipulate Way: | Semi-Automatic Manipulation |
| Customization: |
Available
| Customized Request |
|---|
Is it Possible to Reverse the Direction of a Worm Gearbox?
Yes, it is possible to reverse the direction of a worm gearbox by changing the orientation of either the input or output shaft. However, reversing the direction of a worm gearbox can have some implications that need to be considered:
- Efficiency: Reversing the direction of a worm gearbox can potentially affect its efficiency. Worm gearboxes are typically more efficient in one direction of rotation due to the design of the worm and worm wheel.
- Backlash: Reversing the direction of rotation might lead to increased backlash or play in the gearbox, which can impact precision and smooth operation.
- Lubrication: Depending on the gearbox’s design, reversing the direction could affect lubrication distribution and lead to uneven wear on the gear teeth.
- Load: Reversing the direction might also impact the gearbox’s load-carrying capacity, especially if it’s designed for predominantly one-way operation.
- Noise and Vibration: Direction reversal can sometimes result in increased noise and vibration due to changes in gear engagement and meshing behavior.
If you need to reverse the direction of a worm gearbox, it’s advisable to consult the gearbox manufacturer’s guidelines and recommendations. They can provide insights into whether the specific gearbox model is suitable for reversible operation and any precautions or adjustments needed to ensure proper functioning.
Diagnosing and Fixing Oil Leakage in a Worm Gearbox
Oil leakage in a worm gearbox can lead to reduced lubrication, increased friction, and potential damage to the gearbox components. Here’s a step-by-step process to diagnose and fix oil leakage:
- Inspect the Gearbox: Perform a visual inspection of the gearbox to identify the source of the leakage. Check for oil stains, wet spots, or oil pooling around the gearbox.
- Check Seals and Gaskets: Inspect the seals, gaskets, and O-rings for any signs of wear, cracks, or damage. These components are common points of leakage.
- Tighten Bolts and Fasteners: Ensure that all bolts, screws, and fasteners are properly tightened. Loose fasteners can create gaps that allow oil to escape.
- Replace Damaged Seals: If you find damaged seals or gaskets, replace them with new ones. Use seals that are compatible with the operating conditions and lubricant.
- Check Breather Vent: A clogged or malfunctioning breather vent can cause pressure buildup inside the gearbox, leading to leakage. Clean or replace the breather vent if necessary.
- Examine Shaft Seals: Check the shaft seals for wear or damage. If they’re worn out, replace them with seals of the appropriate size and material.
- Use Proper Lubricant: Ensure that you’re using the correct lubricant recommended for the gearbox. Using the wrong type of lubricant can cause leaks.
- Apply Sealants: In some cases, applying a suitable sealant to the joints and connections can help prevent leaks. Follow the manufacturer’s instructions for proper application.
- Monitor Leakage: After addressing the issues, monitor the gearbox for any signs of continued leakage. If leakage persists, further investigation may be required.
- Regular Maintenance: Implement a regular maintenance schedule that includes checking seals, gaskets, and other potential leakage points. Timely maintenance can prevent future leakage issues.
If you’re unsure about diagnosing or fixing oil leakage in a worm gearbox, consider consulting with a professional or gearbox manufacturer to ensure proper resolution.
Preventing Backlash in a Worm Gearbox
Backlash in a worm gearbox can lead to reduced accuracy, positioning errors, and decreased overall efficiency. Here are steps to prevent or minimize backlash:
- High-Quality Components: Use high-quality worm gears and worm wheels with tight manufacturing tolerances. Precision components will help reduce backlash.
- Proper Meshing: Ensure the worm gear and worm wheel are properly aligned and meshed. Improper meshing can lead to increased backlash.
- Preload: Applying a small amount of preload to the worm gear can help reduce backlash. However, excessive preload can increase friction and wear.
- Anti-Backlash Mechanisms: Consider using anti-backlash mechanisms, such as spring-loaded systems or adjustable shims, to compensate for any inherent backlash.
- Lubrication: Proper lubrication can reduce friction and play a role in minimizing backlash. Use a lubricant that provides good film strength and reduces wear.
- Maintenance: Regularly inspect and maintain the gearbox to identify and address any changes in backlash over time.
It’s important to strike a balance between reducing backlash and maintaining smooth operation. Consulting with gearbox experts and following manufacturer guidelines will help you optimize your worm gearbox’s performance while minimizing backlash.
editor by CX 2024-03-10