FAGI 6318 2RS C3 Deep Groove Ball Bearing
Picture a huge factory generator, a mining rock crusher, or a giant water pump spinning non-stop, day and night. Deep inside these machines there is a small but vital metal part that carries the entire weight of the shaft on its shoulders and allows the axis to spin at thousands of revolutions per minute: the ball bearing. If this part tires out even for a minute, or locks up from overheating or dirt getting in, the whole production line shuts down and the losses pile up fast.
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Product Detail
FAGI 6318 2RS C3 Deep Groove Ball Bearing
Smooth rotation guaranteed — dust-proof, water-resistant and built to survive the heat of heavy industrial machinery
1. The Story of the FAGI 6318 2RS C3: A Big Heart for the Hardest Jobs
Picture a huge factory generator, a mining rock crusher, or a giant water pump spinning non-stop, day and night. Deep inside these machines there is a small but vital metal part that carries the entire weight of the shaft on its shoulders and allows the axis to spin at thousands of revolutions per minute: the ball bearing. If this part tires out even for a minute, or locks up from overheating or dirt getting in, the whole production line shuts down and the losses pile up fast.
The FAGI 6318 2RS C3 ball bearing is exactly the workhorse designed for these punishing conditions. The number 6318 tells you this is a heavy-duty bearing with a 90 mm bore and a 190 mm outer diameter — a solid, powerful unit with very strong steel balls that can handle heavy loads and hard knocks. But the real secret of this bearing isn't just its size; it lies in two key features: 2RS and C3.
2. What Do Those Strange Codes on the Bearing Actually Mean?
You don't need a mechanical engineering degree to understand why this model fits your workshop or plant. Let's break the letters down together:
🛡️ Suffix 2RS (Two Impregnable Rubber Seals)
RS stands for "Rubber Seal." The number 2 tells you that both sides of the bearing are fitted with high-quality rubber seals reinforced with a steel insert. These seals act like strict guards, refusing to let even a speck of dust, metal shaving or a drop of water reach the balls — while also keeping the premium grease inside from leaking out.
🌡️ Suffix C3 (A Safety Gap for When Things Heat Up)
When a machine runs under heavy load for hours, the metal heats up and expands. If the balls were packed in with no room to move, the bearing would seize and shatter as soon as the machine got hot. The C3 code means the factory left a very precise, micrometer-level extra gap between the balls so that when the machine really heats up, the bearing keeps running smoothly with no locking or jamming.
📐 Specifications & Real Dimensions
| Specification | Technical Value | What It Means in Practice |
|---|---|---|
| Bore Diameter (shaft hole) | 90 mm | Fits thick 9 cm shafts with a tight, reliable grip |
| Outer Diameter | 190 mm | Excellent seating in heavy housings and machine frames |
| Width / Thickness | 43 mm | Wide body with very high impact load capacity |
| Seal Type | 2RS (double-sided NBR rubber) | Complete barrier against dust, abrasive particles, shavings and moisture |
| Internal Clearance Class | C3 (radial clearance above normal) | Absorbs thermal expansion during long, continuous duty cycles |
| Steel & Ball Material | Hardened alloy steel (100Cr6) | Wear-resistant, crack-free, long service life |
| Lubrication | Pre-filled with premium grease | No periodic re-greasing required over its service life |
| Manufacturer | FAGI | Industrial-grade quality, tested, with authenticity guaranteed |
⭐ Why the FAGI 6318 2RS C3 Is a Smart Choice
1. Say Goodbye to Sudden Production Stoppages
When a bearing of this size fails, it rarely means just swapping out one part. The shaft can get damaged, or the motor can burn out. The FAGI 6318 is manufactured with high-precision tolerances and hardness-tested balls so it can handle sustained heavy loads without noise, excess vibration or overheating.
2. Total Immunity in Dusty, Muddy Environments
If your equipment works in a stone-cutting shop, a cement plant, a flour mill, a brick kiln or out in the fields, airborne particles are the number one bearing killer. FAGI's 2RS seals are made from heat-resistant elastomers and press firmly against the inner ring to block out anything trying to get in.
3. Maintenance-Free Operation
Open metal-shielded bearings have to be recharged with a grease gun every so often, and if the maintenance crew forgets, the bearing burns out. The 6318 2RS C3 comes with a full, factory-measured charge of high-quality, heat-resistant grease and needs no opening, flushing or re-greasing for the rest of its working life.
4. Extremely Quiet, Low-Vibration Performance
The polished deep-groove raceways and the balanced internal cage keep your machine running at the lowest possible decibel level. That translates directly into minimal friction and maximum energy efficiency.
🏭 Where Is This Bearing Installed?
⚡ High-Power Electric Motors & Generators
Thanks to the C3 clearance, it performs at its best in heavy motor rotors that generate significant heat.
💧 Industrial Pumps & Turbines
In large water, wastewater and process-fluid pumps where resistance to splashing and humidity is critical.
📦 Heavy Conveyor Lines & Belt Systems
On the main drums of mining and cement plant conveyors where the environment is brutally dusty.
🚜 Road-Building Machinery & Crushers
For shafts that endure heavy radial loads, continuous vibration and severe dust exposure.
🛠️ 4 Simple but Critical Installation & Care Tips
1. Never Strike the Outer Ring with a Hammer
When mounting the bearing onto the shaft, force must be applied precisely to the inner ring using a proper sleeve or a hydraulic press. Hitting the outer ring, or using a hammer directly, creates microscopic dents in the balls — and the bearing will start making noise from day one.
2. Do Not Pry Open the Rubber Seals
Some mechanics mistakenly lever off the 2RS rubber seal with a screwdriver to add conventional grease. That damages the sealing lip and contaminates the factory-specialized grease. FAGI bearings need absolutely no additional grease.
3. Clean the Shaft Seat and Housing Carefully
Before fitting the part, wipe the mounting area with a lint-free cloth and make sure there are no burrs or high spots, so the bearing seats perfectly straight without misalignment.
4. Use an Induction Heater If You Can
Because the shaft is a hefty 90 mm, it's best to heat the bearing with an induction heater to around 100°C so it slides onto the shaft easily and seats without stress.
❓ Frequently Asked Questions
1. What is the difference between 2RS and metal-shielded (2Z) or open bearings?
Answer: Metal shields (2Z) only stop larger debris and are not resistant to water or fine dust. Open bearings require an oil bath. The 2RS version, with its compressed rubber seals, is the most impenetrable option and the best possible choice for dirty, dust-filled environments.
2. Does C3 clearance mean the bearing is defective or loose?
Answer: No. In your hand it may feel like it has a bit of play, but that clearance is precisely engineered. Once the bearing is press-fitted onto the shaft and the machine reaches its operating temperature, that gap closes up exactly, and the bearing runs with the least possible friction.
3. Why choose the FAGI brand?
Answer: FAGI products are supplied with strict quality control, heat-treated standard steel and a fair, competitive price compared to expensive market brands — significantly reducing your ongoing maintenance and repair costs.
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