FAGI 22216 CAKW33 Spherical Roller Bearing
Picture a heavy industrial site—like a rock quarry, a busy cement manufacturing plant, or an endless conveyor system hauling tons of bulk material every hour. Inside this machinery, heavy metal shafts spin under immense pressure, continuous vibration, and sudden shock loads. If you put a standard ball bearing into that kind of punishing environment, the tiny round balls quickly crack or deform under the crushing weight. That is precisely where the FAGI 22216 CAKW33 Spherical Roller Bearing proves its real value.
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Product Detail
FAGI Spherical Roller Bearing 22216 CAKW33 Mastery Over Heavy Impacts, Crushing Loads, and Self-Aligning Reliability
The ultimate driving force for heavy machinery, conveyor pulleys, rock crushers, industrial gearboxes, and 80mm tapered shaft assemblies.
What Is a Spherical Roller Bearing and Why Is 22216 So Popular?
Picture a heavy industrial site—like a rock quarry, a busy cement manufacturing plant, or an endless conveyor system hauling tons of bulk material every hour. Inside this machinery, heavy metal shafts spin under immense pressure, continuous vibration, and sudden shock loads. If you put a standard ball bearing into that kind of punishing environment, the tiny round balls quickly crack or deform under the crushing weight. That is precisely where the FAGI 22216 CAKW33 Spherical Roller Bearing proves its real value.
Instead of tiny round balls that contact a track at a single delicate point, this bearing uses heavy-duty, barrel-shaped steel rollers arranged in two side-by-side rows. Because each barrel roller makes broad contact along a sturdy curved line, the load distributes evenly across the entire steel raceway. The practical result is simple: this bearing can comfortably withstand extreme radial loads and tough axial forces that would shatter lighter bearings in minutes.
Even better, this bearing is naturally self-aligning. In real factories, long drive shafts rarely stay completely straight. Under massive loads, hot working temperatures, or slight foundation shifts, shafts will bend and flex slightly. Thanks to the curved, spherical profile of its outer ring, the FAGI 22216 effortlessly tilts inside its housing to match the angle of the shaft. It continues spinning freely and smoothly, preventing binding, jamming, and costly unexpected plant shutdowns.
Decoding the Technical Code in Plain Language
At first glance, an industrial designation like 22216 CAKW33 might look like confusing factory jargon. But every single number and letter tells you exactly how this bearing is built to perform in real-world conditions:
- 222 (Series Family): Identifies a double-row spherical roller bearing. It is universally recognized across global manufacturing as the gold standard for high load capacity, shock resistance, and angular flexibility.
- 16 (Bore Size Identifier): In standard bearing measurement, multiplying this number by 5 gives you the shaft size. 16 × 5 = 80mm. It is designed specifically for rugged 80mm industrial shafts.
- CA (Solid Machined Brass Cage): The internal separator holding the barrel rollers in place is precision-cut from high-grade solid brass. Unlike pressed sheet-metal cages, solid brass will never warp, rattle loose, or crack under violent vibration, rapid acceleration, or high running heat.
- K (Tapered Bore): The inside hole of the bearing is not a straight cylinder—it has a subtle 1:12 conical taper. This clever design allows technicians to mount the bearing securely onto regular shafts using an inexpensive adapter sleeve, making future maintenance and removal fast and pain-free.
- W33 (Direct Re-Greasing System): A dedicated groove and three injection holes are machined directly around the outside ring. This lets maintenance crews pump fresh grease straight into the heart of the rolling elements without taking equipment apart.
Physical Dimensions and Geometry
- Inner Diameter (Bore): 80 mm (Tapered 1:12 profile)
- Outer Diameter: 140 mm
- Width (Thickness): 33 mm
Pro Tip: When mounting this tapered (K) bearing onto a standard smooth shaft, maintenance teams typically pair it with an H316 adapter sleeve complete with locknut and locking washer.
Why Choose the FAGI 22216 CAKW33?
Massive Load Capability
The two-row barrel design absorbs heavy combined loads effortlessly, taking heavy radial pressure and supporting thrust forces simultaneously.
Self-Correcting Alignment
If the machine shaft flexes under load or suffers from slight housing misalignment, the bearing compensates smoothly with zero bind.
Heavy-Duty Brass Cage
The machined CA brass cage shrugs off brutal vibration, runs cool, and delivers long operational life in demanding thermal cycles.
Fast, Direct Lubrication
The W33 feature channels fresh grease straight to the rolling elements, reducing maintenance downtime and extending machine availability.
Where Is This Bearing Used in Industry?
Wherever dust is thick, vibration is constant, and machinery cannot afford unexpected downtime, the 22216 CAKW33 is the premier solution. Typical applications include:
- Mining and Aggregate Quarries: Vibrating screens, hammer mills, jaw crushers, and material sorting equipment that encounter non-stop shock impacts.
- Industrial Conveyors & Bulk Handling: Primary drive drums and head/tail pulleys on bulk material conveyors in mining, cement, and shipping terminals.
- Heavy-Duty Speed Reducers & Gearboxes: Providing rock-solid shaft stability under severe torsional loads and shifting mechanical resistance.
- Steel Mills & Foundries: Continuous casting lines, hot rolling table rollers, and cooling beds subjected to high operational temperatures.
- Pulp, Paper, and Timber Mills: Debarking drums, wood chippers, and press felt rollers where flawless rotation under load is mandatory.
Practical Mounting and Maintenance Guide
1. Thorough Cleaning Before Assembly
Wipe clean the shaft surface, housing bore, and adapter sleeve. Contaminants or metallic grit trapped between the mating parts will create false run-out and premature bearing failure.
2. Proper Clearance Setting on Tapered Sleeves
As you tighten the sleeve locknut, the bearing climbs up the tapered slope, gradually reducing internal clearance. Always use a feeler gauge to measure clearance between the upper roller and outer raceway, ensuring the bearing is neither too loose nor overtightened.
3. Never Strike Directly with Steel Hammers
Hitting the hardened rings or machined brass cage directly with a steel hammer will cause invisible micro-cracks or bend the cage pockets. Always employ proper hook spanners, hydraulic nuts, or soft mounting sleeves.
4. Routine Lubrication Through the W33 Port
Always take full advantage of the outer lubrication groove. Use premium lithium-complex grease or high-temperature extreme-pressure (EP) industrial greases to maintain an unbroken protective film across the rollers.
Frequently Asked Questions (FAQ)
1) What is the key difference between 22216 and 22216 K?
A plain 22216 has a straight (cylindrical) bore that presses directly onto a step shaft. The "K" model features a tapered bore designed for mounting with an adapter sleeve, allowing much easier installation, positioning, and removal on long shafts.
2) Why is a brass cage (CA) preferred over steel sheet cages?
Machined brass cages are rigid, one-piece structures that stand up to harsh vibration in crushers and vibrating screens. Stamped steel cages can flex or fatigue over time when subjected to violent shock loads.
3) Why does this bearing come open without rubber seals?
Large spherical roller bearings are typically housed inside split plummer blocks (like SNL or SNH housings) that feature their own heavy-duty labyrinth or felt seals. This setup allows periodic re-greasing through the W33 groove without taking the bearing off the line.
4) How do I verify genuine FAGI quality?
Authentic FAGI bearings showcase razor-sharp laser markings, flawless roller polishing, clean burr-free brass cages, and premium anti-corrosion packaging. Sourcing directly from reputable industrial distributors is your best guarantee.
Purchase Authentic FAGI 22216 CAKW33 Bearings
Looking for exact technical matching, compatible adapter sleeves, and certified genuine industrial bearings? Our team at KGICO is ready to assist your facility.
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