In demanding industrial environments where corrosion, sanitation, and durability are non-negotiable, the standard gearbox often falls short. For applications in food & beverage processing, pharmaceuticals, chemical handling, marine operations, and outdoor machinery, a robust and reliable solution is essential. This is where the Stainless Steel Gearbox from Raydafon Group excels. Engineered for peak performance in harsh conditions, our gearboxes combine the superior corrosion resistance of stainless steel with precision engineering to deliver unmatched longevity and operational efficiency.
Raydafon Group has been at the forefront of power transmission solutions for decades. Our stainless steel series represents the pinnacle of this expertise, designed specifically to meet the stringent requirements of modern industry. We understand that downtime is costly, which is why every component is meticulously crafted and tested to ensure reliability when it matters most.
Selecting the right gearbox is a critical decision that impacts your entire operation's productivity and maintenance overhead. Here are the core advantages of our design:
Raydafon Group offers a complete lineup of stainless steel gearboxes. Below are the detailed specifications for our flagship inline helical gearbox series. Specifications for other types (e.g., right-angle, worm, bevel) are available upon request.
| Component | Material Specification | Standard / Finish |
|---|---|---|
| Gearbox Housing | AISI 304 or 316 Stainless Steel | Ra ≤ 0.8 µm (32 µin) polished surface |
| Gears (Helical) | Case-hardened Stainless Steel (AISI 420/440C) | Precision ground, DIN 6 quality |
| Input/Output Shafts | Stainless Steel (AISI 304/316 or 17-4PH) | Ground finish, keyway or spline options |
| Shaft Seals | FDA-approved Nitrile or Viton | Double-lip contact seals |
| Bearings | Stainless Steel Deep Groove Ball Bearings | Sealed-for-life, lubricated with food-grade grease |
| Fasteners & Hardware | A2 or A4 (316) Stainless Steel | Full thread engagement |
| Model Series | Ratio Range | Input Power (kW) | Output Torque (Nm) | Efficiency (%) | Max Input Speed (RPM) | Protection Rating |
|---|---|---|---|---|---|---|
| RSS-ILH 040 | 3.66 - 101.2 | 0.12 - 0.75 | 35 - 160 | >96% (Single Stage) | 6000 | IP66 / IP69K |
| RSS-ILH 063 | 3.66 - 288 | 0.18 - 2.2 | 90 - 450 | >94% (Multi-stage) | 5500 | IP66 / IP69K |
| RSS-ILH 090 | 4.07 - 340 | 0.25 - 7.5 | 200 - 1200 | >94% (Multi-stage) | 5000 | IP66 / IP69K |
| RSS-ILH 120 | 4.46 - 455 | 0.55 - 15 | 500 - 2800 | >93% (Multi-stage) | 4500 | IP66 / IP69K |
Q: What is the main difference between AISI 304 and AISI 316 stainless steel for gearboxes?
A: The primary difference is the addition of molybdenum in AISI 316 (2-3%), which significantly enhances its resistance to chlorides and acidic environments, such as those found in saltwater, chemical processing, or places where bleach or strong disinfectants are used. AISI 304 is an excellent, cost-effective choice for general food-grade and mildly corrosive environments. AISI 316 is the premium choice for highly corrosive settings like marine applications or chemical plants. Raydafon Group offers both grades to suit specific application requirements.
Q: Can your stainless steel gearboxes be used in washdown areas with high-pressure, high-temperature cleaning?
A: Absolutely. Our standard construction includes an IP66 rating, which guarantees protection against powerful water jets. More critically, we offer an IP69K rating as a standard or optional feature on most models. IP69K certifies protection against close-range high-pressure, high-temperature washdowns (up to 80°C/176°F water at 80-100 bar), making our gearboxes perfectly suited for the rigorous sanitation cycles in food, beverage, and pharmaceutical production lines.
Q: How does the efficiency of a stainless steel gearbox compare to a standard cast iron one?
A: With modern precision manufacturing, the mechanical efficiency of a well-made stainless steel gearbox is virtually identical to its cast iron counterpart of the same gear type and quality. Our helical gearboxes, for example, achieve over 96% efficiency per stage. Any minor theoretical differences are negligible in real-world applications. The key advantage lies not in efficiency loss/gain, but in the dramatically extended lifespan and reduced maintenance in corrosive environments, where a cast iron unit would quickly fail.
Q: What lubrication is used, and what are the service intervals?
A: We typically fill our gearboxes with high-performance, food-grade synthetic oil that is NSF H1 registered (safe for incidental food contact). For many of our smaller to mid-size models, we offer "sealed-for-life" configurations lubricated with a special synthetic grease, requiring no oil changes under normal operating conditions. For larger units or extreme duty cycles, an oil change is recommended. Service intervals vary greatly based on load, speed, and temperature but typically range from 10,000 to 20,000 operating hours. Our technical documentation provides detailed lubrication charts.
Q: Are custom modifications available for unique applications?
A: Yes, Raydafon Group prides itself on its engineering flexibility. We routinely provide custom solutions, including special shaft dimensions (length, diameter, keyways/splines), unique mounting flanges, custom paint or finish markings, specific sealing materials for unusual chemicals, and modifications for extreme temperatures. Our application engineering team works directly with clients to design a gearbox that fits their exact machine integration needs.
Q: What industries are the primary users of your stainless steel gearboxes?
A: Our gearboxes are critical components across numerous industries. Key sectors include: Food & Beverage (conveyors, mixers, fillers, packaging), Pharmaceutical & Cosmetic (processing equipment, automated lines), Chemical & Petrochemical (pumps, agitators, valve actuators), Marine & Offshore (winches, deck machinery, hatch controls), Wastewater Treatment (screw conveyors, aerators), and Outdoor Mobile Equipment where weather resistance is crucial.
Q: How do I select the correct model and ratio for my application?
A: Proper selection requires a few key parameters: Required output speed and torque, available input motor power and speed, the operating environment (temperatures, chemicals present), duty cycle (continuous vs. intermittent), and mounting space constraints. We provide detailed selection software and calculation tools on our website. For optimal results, we strongly recommend contacting the Raydafon Group technical support team with your application details. We can perform the precise calculations and recommend the perfect model, ratio, and configuration to ensure reliable, long-term performance.


