Spherical Roller Bearings
Overview
Spherical roller bearings are heavy-duty, self-aligning rolling bearings designed to carry exceptionally high radial loads together with axial loads in both directions — even under shaft misalignment, deflection, and housing/mounting errors. Two rows of barrel-shaped rollers run on a common spherical raceway in the outer ring, allowing the bearing to automatically compensate for angular misalignment without loss of performance or premature wear. This makes spherical roller bearings the standard choice for heavy industrial equipment where shock loads, vibration, and shaft deflection are unavoidable — including mining machinery, vibrating screens, gearboxes, paper mill rolls, wind turbines, and steel rolling mills.
As a manufacturer and export supplier, we produce spherical roller bearings across the full size range — from compact 213/222 series for general machinery up to large-bore 230/240 series for mining and steel-mill equipment — with open, sealed (2RS/CC), tapered bore (K), and lubrication-groove (W33) variants available, fully interchangeable with SKF, NSK, FAG, NTN, and Timken dimensional standards.
Products
Interchangeable With : SKF、NSK
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The 22208 CA/W33 is a precision spherical roller bearing designed to handle heavy radial loads and moderate axial loads in...
Product Series Overview Table
| Series | Bore Range (mm) |
Design | Typical Load Capacity | Best For |
|---|---|---|---|---|
| 213 series | 20 – 100 | Light, double row | Low–medium | Compact machinery, fans, general industrial gearboxes |
| 222 series | 20 – 280 | Medium, double row | Medium | Conveyors, pumps, gearboxes, electric motors |
| 223 series | 30 – 360 | Medium-wide, double row | Medium–high | Vibrating screens, crushers, paper machine rolls |
| 230 series | 100 – 500 | Heavy, wide double row | High | Mining equipment, rolling mills, large gearboxes |
| 231 / 232 series | 100 – 1300 | Heavy/extra-heavy | High | Wind turbine gearboxes, marine propulsion, steel mills |
| 240 / 241 series | 110 – 1000+ | Full-complement, no-cage | Extra-high radial | Heavy mining machinery, large reduction gearboxes |
Design Variants & Specifications
| Variant Code | Meaning | Application Benefit |
|---|---|---|
| E | Enhanced internal design (reinforced roller/raceway profile) | Higher load rating in the same envelope size |
| C3 / C4 | Increased internal radial clearance | Compensates for thermal expansion under heavy/heat-generating loads |
| K | Tapered bore (1:12 taper) | Easier mounting/dismounting with adapter sleeve on plain shafts |
| W33 | Lubrication groove + 3 holes in outer ring | Re-lubrication without dismounting — ideal for continuous-duty equipment |
| 2RS | Sealed variant (rubber seal both sides) | Keeps contaminants out and grease in — reduces maintenance downtime |
| CC | Pressed steel cage, roller-centered | Lower cost, suited to small/medium sizes and standard duty cycles |
| MB | Machined cage (brass), roller-centered | Higher strength and speed capability than CC — for medium-heavy duty |
| MA | Machined cage (brass/steel), ring-centered | Used on larger, heavy-duty sizes where higher cage strength is needed |
Applications & Industries
- Mining & Aggregates — Crusher shafts, vibrating screens, conveyor pulleys, screening machinery.
- Power Generation — Wind turbine gearboxes, main shaft bearings, cooling tower fans.
- Pulp & Paper — Paper machine rolls, calender rolls, pulping equipment.
- Steel & Metal Processing — Rolling mill roll necks, continuous casting machinery, coilers.
- Marine & Heavy Transport — Propulsion shaft bearings, deck machinery, winches.
- Industrial Gearboxes — Speed reducers, large electric motors, industrial fans and blowers.
FAQs
What is the difference between a spherical roller bearing and a tapered roller bearing?
A spherical roller bearing uses two rows of barrel-shaped rollers on a common spherical outer-ring raceway, giving it self-aligning capability and the ability to handle misalignment. A tapered roller bearing has conical rollers and raceways and offers no self-aligning function, but typically provides higher precision and stiffness for applications without misalignment concerns, such as automotive wheel hubs.
When should I choose a sealed (2RS/CC) vs. open spherical roller bearing?
Sealed variants are recommended for applications with limited access for re-lubrication or exposure to dust, moisture, or contaminants — such as enclosed gearboxes or outdoor screening equipment. Open variants with W33 lubrication grooves are preferred where the equipment uses centralized or continuous lubrication systems.
Can your spherical roller bearings replace SKF, NSK, or FAG bearings directly?
Yes. Our spherical roller bearings follow ISO standard boundary dimensions, so the same bearing number (e.g., 22216, 23222, 24024) is dimensionally interchangeable with SKF, NSK, FAG, NTN, and Timken equivalents — no redesign of the housing or shaft is required.
What is the typical lead time for bulk orders?
Standard series sizes are stocked and typically ship within 3–7 days. Large-bore or custom-specification orders typically require 15–30 days depending on quantity — we confirm exact lead time at the quotation stage.
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