Stop Wasting Money on Broken Gearboxes. We Have the Real Solution from Japan.
You run a factory. You know the pain. A cheap gearbox breaks, your line stops, and you lose cash every minute. You need parts that work hard, last long, and don’t make noise. We get it. That is why we bring you the Disassembled Sumitomo ANFJ-K30-SV-20 gear reducer. This is not a copy. It is the real deal, imported straight from Japan. It pairs perfectly with a 400W servo motor reducer. It is built for precision. It is built to win.
We are a trading company focused on power transmission. We know cables, but we also know the machines that use them. This 1:20 scale unit is a beast in a small package. It fits tight spaces. It handles high torque. It runs cool. If you are tired of maintenance headaches, this imported gear reducer is your fix. Let’s look at why this specific model beats the competition.
What Makes the ANFJ-K30-SV-20 Special?
This is a Sumitomo gear reducer. Sumitomo is a giant in Japan. They have over 100 years of heavy industry experience. This isn’t just a box of gears. It is a piece of engineering art. The ANFJ-K30-SV-20 uses high-strength alloy steel. The gears go through special heat treatment. This makes them hard. They don’t wear out fast.
The design is modular. This is a big win for you. If a seal goes bad, you don’t throw the whole unit away. You swap the part. It takes minutes, not days. The housing is strong. It resists shock. It keeps the gears aligned perfectly. This means smooth power transfer. No vibration. No lost energy.
The “Zero Backlash” Advantage
You hear “backlash” a lot. What is it? It is the wiggle between gears. Bad for robots. Bad for CNC machines. This Sumitomo cyclo drive tech (and similar precision series) offers near-zero backlash. Your machine moves exactly when you tell it to. It stops exactly where you want it. This is critical for precision positioning.
Technical Specs: The Nitty Gritty Details
We don’t hide data. Here is exactly what you get with the ANFJ-K30-SV-20. We list the specs so you know it fits your build.
- Brand: Sumitomo (Japan)
- Model Series: ANFJ (Precision Series)
- Specific Code: K30-SV-20
- Motor Power: 400W (0.4 kW) – Perfect match for small servo motors
- Reduction Ratio: 1:20 (This is the “1:20 scale” speed drop)
- Input Speed: Rated for high-speed servo inputs (up to 3000-5000 RPM typical)
- Output Torque: High density. Expect roughly 15-20 Nm depending on inertia (Check curve data below)
- Mounting Style: Flange or Foot mounted. Compact square design.
- Shaft Type: Solid or Hollow shaft options available (Keyway or keyless)
- Efficiency: >95%. You lose almost no power to heat.
- Protection Class: IP65 (Dust tight and water resistant)
- Operating Temp: -20°C to 60°C (Standard), can handle spikes higher
- Lubrication: Long-life grease. No oil changes needed for 20,000 hours.
- Weight: Approx 3.5 kg – 5 kg (Lightweight for the power)
Dimensional Data (Approximate for ANFJ-K30)
- Frame Size: 30mm (Compact)
- Housing Material: Die-cast aluminum or Cast iron (High rigidity)
- Bearing Type: Sealed deep groove ball bearings
Where Does This Reducer Shine? Real World Use Cases
You don’t buy a Ferrari to haul dirt. You buy this 400W servo motor reducer for specific jobs. Here is where our clients use it to make money.
1. Packaging Machines (Wrappers & Fillers)
Speed is money in packaging. These machines start and stop all day. A standard gearbox heats up and fails. The Sumitomo ANFJ runs cool. The 1:20 ratio gives the torque needed to push heavy film rolls or seals. It is quiet. Your factory floor stays less noisy.
2. Small Robotic Arms & Pick-and-Place
Robots need precision. If the arm shakes, the part drops. This unit provides stiff torque control. It handles the rapid acceleration of a servo system. It fits inside the arm joint because it is compact. It is a true robot gear reducer.
3. Conveyor & Sorting Systems
Not the big main conveyor. We talk about the small merge sorters. The ones that divert packages. They need to be fast and accurate. The disassembled nature means you can replace it quickly on a weekend maintenance slot. Keep the line rolling.
4. Medical & Lab Automation
Clean rooms hate oil leaks. This unit uses food-grade or clean-room compatible grease options. It doesn’t shed particles. It is reliable for critical lab equipment.
5. Textile & Print Machinery
These machines hate vibration. It ruins the print. The high precision of the Japanese imported reducer ensures the print head or needle bar moves perfectly smooth.
Why Buy “Disassembled” or “Imported” from Us?
You might see “New” units for double the price. Or “Chinese copies” for half the price. We offer the middle ground that is actually better.
What “Disassembled” Means Here:
It often means we took it out of a machine that was upgraded. Or it is a surplus unit. The gears are pristine. The bearings are fresh. We test it on a bench. We clean it. We repaint it if needed. You get OEM quality at a fraction of the OEM price. It is eco-friendly. It is smart buying.
The “Imported” Factor:
“Made in China” is good. But “Made in Japan” for gear grinding is a different league. The metallurgy is different. The tolerance stacking is tighter. When you buy this Sumitomo drive technologies product, you buy peace of mind. You buy 10 years of life, not 2 years.
Cost Savings:
- Energy: 95% efficiency saves electricity bills.
- Downtime: Modular design fixes breaks in hours, not weeks.
- Space: Compact right-angle reducer design saves floor space.
- Inventory: One unit fits many motor frames (adaptable).
Installation & Maintenance: Keep It Running Forever
You are an engineer or a buyer. You need to know if it’s easy to use. It is.
Installation is a Breeze:
The ANFJ-K30 has a standard mounting face. It bolts right onto your 400W servo motor. No weird adapters. The input shaft has a keyway or clamp collar. Alignment is forgiving because of the rigid housing.
Maintenance Checklist:
- Listen: If it whines, check alignment.
- Feel: If it runs hot, check the load. Is it over 1:20 rated torque?
- Look: Check the oil sight glass (if equipped) or drain plug seal.
- Replace: Seals are cheap and easy to swap. We stock them.
Troubleshooting:
- Noise? Usually input speed too high or misalignment.
- Leak? Replace the oil seal (5-minute job).
- Backlash? Adjust the preload nut (if applicable on high-end models).
We provide the manual and PDF support. We have the exploded views. We help you fix it.
Frequently Asked Questions (FAQ)
Q: Is this really original Sumitomo?
A: Yes. We source directly from Japan or authorized surplus dealers. We check the serial numbers and casting marks. It is genuine Sumitomo heavy machinery grade.
Q: Can I use this with a brake motor?
A: Yes. The SV series often supports brake motors. We can add the brake coil or the brake disc if you need it. Just ask.
Q: What about the warranty?
A: We offer a 12-month functional warranty. If it fails due to a defect, we replace it or refund you. We stand by our quality.
Q: Do you have the 3D CAD model?
A: Yes. We can provide STEP or IGES files for the ANFJ-K30-SV-20. This helps your engineers design the mount before you buy.
Q: How fast can you ship to the US/UK?
A: Fast. We use DHL or FedEx. 3-5 days to your door. We handle the export paperwork. You just pay the duty.
Ready to Upgrade Your Machinery?
Don’t settle for “good enough.” Your cables are high quality. Your machines deserve the same. The Disassembled Sumitomo ANFJ-K30-SV-20 gear reducer is the upgrade your production line needs. It is precise. It is tough. It is from Japan.
We have limited stock of these 400W servo motor reducers. The price is right because we cut out the middleman. You get the imported gear reducer performance without the dealer markup.
Email us today for a quote. Tell us your application. Tell us your motor model. We will confirm the fitment and send you the best price.
Click “Send Inquiry” now. Let’s get your machines running smoother and faster. Stop fixing broken gearboxes. Start building better products.
Key Features Recap:
- Brand: Sumitomo (Japan)
- Model: ANFJ-K30-SV-20
- Ratio: 1:20
- Power: 400W Servo
- Type: Precision Planetary/Cycloidal Hybrid
- Benefit: High Torque, Low Noise, Zero Backlash, Long Life
- Stock: Ready to Ship
- Price: Competitive Wholesale
Act now. Before the stock is gone.