For decades, the Shaft Mounted Gearbox has been a cornerstone of industrial machinery, offering a compact and robust solution for right-angle power transmission directly on the driven shaft. Its design eliminates the need for complex foundations, couplings, and sliding bases, making it a highly versatile and cost-effective choice for a wide range of applications. At Raydafon Group, we have refined this essential component, combining decades of engineering expertise with advanced manufacturing to deliver gearboxes that set the benchmark for durability, efficiency, and performance. Our commitment is to provide power transmission solutions that not only meet but exceed the rigorous demands of modern industry, ensuring your operations run smoothly with minimal downtime.
Raydafon Group's shaft mounted gearboxes are engineered for excellence. Every unit is designed to deliver maximum torque in a minimal footprint, built from high-grade materials to withstand harsh operating conditions. Key features include:
Our comprehensive range of shaft mounted gearboxes is designed to cater to diverse power and speed requirements. Below are the detailed parameters for our standard product series.
| Model | Ratio Range | Input Power (kW) | Output Torque (Nm) | Input Speed (max RPM) | Weight Approx. (kg) |
|---|---|---|---|---|---|
| SM-05 | 5:1 to 25:1 | 0.12 - 0.75 | 50 - 300 | 1450 | 4.5 |
| SM-1 | 5:1 to 25:1 | 0.25 - 1.5 | 100 - 600 | 1450 | 8.2 |
| SM-2 | 5:1 to 25:1 | 0.55 - 3.0 | 250 - 1200 | 1450 | 14.5 |
| SM-3 | 5:1 to 25:1 | 1.1 - 5.5 | 500 - 2200 | 1450 | 25.0 |
| SM-4 | 5:1 to 25:1 | 2.2 - 11.0 | 1000 - 4500 | 1450 | 45.0 |
| SM-5 | 5:1 to 25:1 | 4.0 - 18.5 | 1800 - 8500 | 1450 | 78.0 |
| Component | Material Specification | Treatment/Process |
|---|---|---|
| Housing | GG25 Cast Iron (ASTM A48 Class 25) | Shot blasted, machined, and painted with industrial-grade epoxy paint. |
| Gears (Pinion & Wheel) | 20MnCr5 Alloy Steel | Case hardened to 58-62 HRC and precision ground. |
| Shafts (Input & Output) | 42CrMo4 Alloy Steel | Hardened and tempered, ground finish. |
| Bearings | Deep Groove Ball Bearings & Tapered Roller Bearings | C3 clearance for thermal stability, pre-lubricated. |
| Seals | Nitrile Rubber (NBR) with spring | Standard; Viton (FKM) available for high-temperature applications. |
| Tapered Bush | Steel, zinc plated | Precision machined for concentric locking. |
The adaptability and reliability of our shaft mounted gearboxes make them perfect for numerous industries. Common applications include:
Q: How do I properly install a Raydafon shaft mounted gearbox?
A: Proper installation is key to performance and longevity. First, ensure the driven shaft is clean, smooth, and within the specified tolerance. Slide the tapered bush onto the shaft to the desired position. Mount the gearbox onto the bush, aligning it carefully. Tighten the bush locking screws evenly in a cross pattern to the recommended torque specified in the manual. Finally, secure the gearbox's reaction arm (torque arm) to a fixed, immovable point using the provided brackets. The arm must absorb the reaction torque, not the gearbox housing. Always refer to the Raydafon installation guide for detailed, step-by-step instructions.
Q: Can the gearbox be mounted in any orientation?
A: Yes, Raydafon shaft mounted gearboxes are designed for universal mounting. They can be mounted with the output shaft in a horizontal, vertical-up, or vertical-down position. The housing features multiple tapped holes to accommodate the reaction arm in various configurations. It is crucial to ensure that the vent plug is positioned at the highest point of the housing to allow for proper breathing and prevent oil leakage.
Q: What is the recommended lubrication and oil change interval?
A: Our gearboxes are filled with high-quality ISO VG 220 synthetic or mineral industrial gear oil at the factory. The initial oil change should be performed after the first 500 hours of operation to remove any break-in wear particles. Subsequent oil changes are recommended every 2500 to 4000 operating hours, or at least annually, depending on the operating conditions (temperature, load, environment). Always check the oil level periodically through the sight glass or dipstick, ensuring it is between the marked levels.
Q: How do I know if my gearbox needs servicing?
A: Warning signs include unusual noise (grinding, knocking), excessive vibration, a noticeable increase in operating temperature (housing feels very hot to the touch), or oil leakage around the seals. Any of these symptoms indicate that the gearbox should be inspected immediately. Regular preventive maintenance, as per our schedule, is the best way to avoid unexpected failures.
Q: How do I select the correct shaft mounted gearbox for my application?
A: Selection requires key parameters: the required output speed (RPM), the input motor power (kW or HP) and speed (RPM), the desired service factor (based on daily operating hours and load shock), and the driven shaft diameter. Our technical team at Raydafon Group can assist you with this calculation. We use advanced selection software to ensure the chosen model provides adequate torque capacity and a suitable safety margin for your specific duty cycle.
Q: Does Raydafon Group offer custom shaft mounted gearbox solutions?
A: Absolutely. While our standard SM-Series covers a broad spectrum, we specialize in engineered-to-order solutions. Customizations can include special shaft dimensions, flanges, mounting configurations, specific paint colors or coatings (e.g., food-grade, marine-grade), special sealing arrangements for extreme environments, and modifications to achieve non-standard reduction ratios. Contact our engineering department with your requirements.
Q: The gearbox is overheating. What could be the cause?
A: Overheating can result from several factors: overloading beyond the gearbox's rated capacity, insufficient or degraded lubricant (oil level low or wrong oil type), excessive ambient temperature, or misalignment causing binding. First, check the load and ensure it is within specifications. Verify the oil level and quality. Ensure the gearbox is not installed in a confined space without ventilation. If the problem persists, consult Raydafon technical support.
Q: There is oil leaking from the output shaft seal. What should I do?
A: Minor seepage is normal, but active dripping indicates a seal issue. Causes can be a worn seal, a damaged or scored shaft surface, a plugged vent causing internal pressure build-up, or an overfilled oil sump. Check and clean the vent plug. Verify the oil level is correct. If the leak continues, the seal likely needs replacement. Raydafon provides seal kits and detailed replacement procedures to facilitate maintenance.
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