Is Your Machine Making Too Much Noise?
You run a factory. You have servo motors. They are fast. But they are loud. The gearbox hums like a bee hive. It drives your workers crazy. It makes your high-end machine sound cheap. And worst of all? It is not precise. The arm shakes a little when it stops. The product is not in the right spot. You have to slow down to fix it. This kills your speed. It kills your profit. You need a better solution. You need a reducer that is quiet. You need one that is light. You need one that does not leak grease all over your clean floor.This is the Shimpo VRSF-5B-200. It is a Japanese imported precision reducer. It has a 1:5 ratio. It fixes these problems. It uses special helical gears. They slide against each other smoothly. No grinding. No loud noise. Just quiet power. It is made of aluminum. It is light. Your motor does not have to work hard to move it. It has an IP65 rating. Dust and water do not hurt it. You can wash it down. It is ready for food packing or medical use. Best of all? You never have to change the grease. It is sealed for life. This is the upgrade your machine needs.
What Makes the VRSF-5B-200 Special?
This is not a standard iron gearbox. Shimpo uses a special design. They call it the VRSF series. It is built for OEMs. OEMs are companies that build machines. They need parts that work every time. They need parts that are small. This reducer is compact. It saves space in your cabinet.The core of this unit is the gear type. Most cheap reducers use spur gears. They are straight teeth. They clash together. It makes noise. It causes vibration. The Shimpo VRSF uses helical gears. Think of a screw thread. The teeth are angled. They mesh together gradually. One tooth starts to engage before the other one finishes. This makes the run very smooth. The noise level is under 75dB. Sometimes it is as low as 65dB. That is the sound of a normal conversation. Your machine will be quiet.It also uses high-precision manufacturing. Shimpo has a factory in Kyoto, Japan. They started in 1952. They know gears. They make this in a clean room. Dust is the enemy of precision. They keep it clean. This means your gears last longer. They do not wear out fast. The backlash is very low. Backlash is the “slop” or “shake” in the gear. When the motor stops, the load moves a tiny bit back and forth. This is bad for accuracy. The VRSF-5B-200 has options for 3 arc-minutes. That is almost zero shake. Your robot arm stops exactly where you tell it to.
Technical Specs You Need to Know
Let’s look at the numbers. You need to know if this fits your motor. You need to know if it is strong enough. Here is the simple breakdown. Do not worry about complex math. Just look at what it can do.The Basics
- Model: VRSF-5B-200-T1 (or similar T2/T3 variants)
- Ratio: 1:5 (This is a single stage reduction)
- Frame Size: B (This is the smaller size. It fits 200W and 400W servos easily)
- Origin: Japan (Made in Japan, not a copy)
- Housing: Aluminum Alloy (Light and strong)
- Protection: IP65 (Dust tight and water jet proof)
Performance Data
- Rated Torque: 2.65 Nm (This is the power it gives out continuously)
- Max Torque: 8.04 Nm (This is the peak power for short bursts)
- Emergency Stop Torque: 8.53 Nm (It can handle a sudden crash stop)
- Efficiency: 90% (Very little power is wasted as heat)
- Torsional Rigidity: 20 Nm/arcmin (It is stiff. It does not twist under load)
Load Capacity
- Radial Load: 490 N (Force pushing sideways on the shaft)
- Axial Load: 245 N (Force pulling along the shaft)
- Moment of Inertia: 0.118 kgcm² (Very low. This means fast response)
Physical Details
- Input Shaft: 11mm diameter (Usually no keyway, but adapters fix this)
- Output Shaft: 12mm diameter (With M5 tapping for mounting)
- Weight: Approx 0.75 kg (Super light compared to iron gears)
- Noise: ≤ 72 dB (Quiet operation)
- Grease: Life-lubricated (No maintenance needed)
Why Choose a 1:5 Ratio?
Why pick the 1:5 model? Speed and torque are a trade-off. Your servo motor spins very fast. But it has low torque. It cannot push heavy things. The reducer fixes this. It takes the high speed and turns it into high force.With a 1:5 ratio, the output speed is 1/5 of the motor speed. If your motor runs at 3000 RPM, the output is 600 RPM. But the torque goes up 5 times (minus a little friction loss). This is the sweet spot for many machines.
- Conveyor belts: They need medium speed and good pulling power.
- Rotary tables: They need to spin fast but hold the part tight.
- Medical pumps: They need smooth, pulse-free movement.
- Packaging machines: They need to start and stop quickly without shaking the product.
If you need slower speed, you can go 1:25 or 1:81. But for general industrial use, 1:5 is the most popular. It keeps the machine snappy. It does not bog down.
Real World Applications
Where do we see this part used? Everywhere precision matters.Medical DevicesHospitals need clean machines. The IP65 rating is key here. You can spray the machine with disinfectant. The grease inside does not leak out. Bacteria does not get in. It is used in CT scanners. It is used in drug infusion pumps. These pumps need to push 0.1ml of fluid. That is a tiny amount. If the gear shakes, the dose is wrong. The low backlash of the VRSF ensures the dose is perfect every time.Food and BeverageImagine a machine that puts labels on bottles. It runs fast. It needs to stop exactly at the label spot. If it overshoots, the label is crooked. The helical gears make it smooth. The aluminum housing is safe. If it touches the food line, it is not toxic. It is also easy to wash. High pressure water is fine.Automation and RoboticsPick and place robots use these. The arm moves up, down, left, right. Every joint has a motor and a reducer. If the reducer is heavy, the arm moves slower. It uses more electricity. The aluminum frame saves weight. The robot can move faster. It uses less energy. This saves you money on your electric bill.Semiconductor ManufacturingChip making is delicate. Vibration is the enemy. Even a tiny vibration ruins a wafer. The VRSF series is designed to have “non-vibration rotation.” It runs smooth. It keeps the production yield high.
Installation and Mounting
You might worry about fitting it to your motor. Do not worry. Shimpo thought of this. The input shaft is 11mm. Most servo motors have a specific shaft size. What if they do not match?Shimpo uses an “Adapter Flange” system. This is a smart design. They have a special mounting code. You can use a clamp collar. You can use a bushing. You can use an adapter plate. This means you can connect almost any brand of servo motor to this reducer. Panasonic, Yaskawa, Mitsubishi, Delta. It does not matter. The adapter methodology allows for limitless options.You can mount it in any angle. Up, down, sideways. The grease is sealed inside. It will not leak out even if you mount it upside down. This gives you freedom in your machine design. You do not have to design the machine around the gearbox orientation.
Maintenance and Life Span
Old gearboxes are a headache. You have to check the oil level. You have to change the oil every 6 months. It gets messy. It gets dirt in the gears.The Shimpo VRSF-5B-200 is different. It uses high-quality synthetic grease. It is filled at the factory. It is sealed with a triple seal structure. It is a “maintenance-free” unit. You install it. You forget about it. It runs for 20,000 hours or more.The life of the gear depends on how hard you run it. If you stay within the rated torque, it will last for years. The aluminum housing does not rust. The gears are hardened steel. They resist wear. This is a “fit and forget” part. It lowers your total cost of ownership. You spend less on repairs. You spend less on downtime.
Backlash Options Explained
Not all jobs need the same precision. Shimpo gives you choices. This saves you money. You do not buy a Ferrari to go to the grocery store.Standard Backlash (≤ 15 arc-min)This is for general use. General conveyors. Fans. Things where a tiny bit of shake does not matter. It is the cheapest option.Low Backlash (≤ 5 arc-min)This is for better machines. Packaging. Labeling. Things that need to be accurate but not perfect.Precision Backlash (≤ 3 arc-min)This is the PB version. VRSF-PB-5B-200. This is for high-end jobs. Medical robots. CNC machines. Where every micron counts. The “PB” stands for Precision Backlash. It costs more. But it guarantees almost zero lost motion.For the 1:5 ratio in frame size B, the standard is usually 15 min. But you can special order the PB version. Make sure to check the model code. The “PB” in the name tells you it is the high-precision type.
Why Buy From Us?
You can find these on eBay. You can find them from other traders. But why buy from us? We are experts in transmission products. We know the VRSF series inside out. We supply the full range. From the small VRB series to the big EVL series.We know that “Japanese Imported” means quality. But it also means you need the right documentation. We provide the spec sheets. We help you select the right ratio. Is 1:5 too fast? Do you need 1:9? We can calculate the inertia for you. We make sure the motor shaft matches the input.We have fast delivery. These are popular items. They move fast. If you wait, you might have a production line stop. We keep stock. We ship worldwide. DHL, FedEx, UPS. We get it to your door in 3 to 5 days.We also offer a warranty. New units come with a 1 to 2-year warranty. Used units are tested. We do not sell junk. We sell parts that work.
Get Your Quote Today
Do not let a bad gearbox slow you down. Do not let the noise annoy your team. Upgrade to the Shimpo VRSF-5B-200. It is light. It is quiet. It is precise. It is built in Japan. It is the best choice for your servo motor.We have the VRSF-5B-200-T1 in stock. We have the VRSF-PB-5B-200 for high precision. We have the adapters you need. Check our online selector tool or contact us now.Tell us your motor model. Tell us your required torque. We will give you the best price. We will ship it fast.Email us now for a quotation. Let’s get your machines running smoother and faster.