1. What Are Large-Size Spherical Roller Bearings

Large-size spherical roller bearings generally refer to extra-large spherical roller bearings of series 230/231/232/240/241 with a bore diameter of 400 mm and above. They are equipped with thick forged inner and outer rings, elongated thickened rollers and heavy-duty machined solid brass cages. Custom-engineered for ultra-large industrial rotary machinery under ten-thousand-ton heavy loads, they offer ample self-aligning margin to accommodate extreme eccentricity and impact operating conditions.

2. Nomenclature of Large-Size Spherical Roller Bearings

Model Example: 241/1060CAK30/W33

• 241: Bearing series code

• /1060: Extra-large bore diameter of 1060 mm

• CA: One-piece heavy-duty machined brass cage

• K30: Special heavy-duty tapered bore with 1:30 taper ratio

• W33: Outer ring with full circumferential lubrication groove and multiple grease nipples, compatible with centralized lubrication stations

• Suffix C4: Extra-large internal clearance, designed for kilns, rolling mills and other equipment operating at temperatures of hundreds of degrees Celsius

3. Features of Large-Size Spherical Roller Bearings

• Inner and outer rings forged from high-strength special bearing steel, featuring exceptional overall rigidity without deformation under ten-thousand-ton loads

• Extra-long thickened double-row rollers deliver ultimate basic dynamic load rating and basic static load rating among industrial bearings

• Extra-large self-aligning compensation angle offsets installation and operational eccentricity of dozens of millimeters for huge cylinders and long shafts

• Circumferential oil groove with multiple grease ports supports long-distance automatic centralized lubrication systems

• 1:30 large tapered bore matched with heavy-duty adapter sleeves, enabling bearing replacement without disassembling oversized main shafts

• Optional special heat treatment for continuous service at temperatures over 200°C

4. Applications of Large-Size Spherical Roller Bearings

Super-large cement rotary kilns, ten-thousand-ton vertical slag mills, heavy metallurgical heavy plate rolling mills, large mining SAG/AG mills, rotary mechanisms of giant port stacker-reclaimers, extra-large calcining rotary furnaces, support assemblies for huge marine main shafts, heavy main shafts of wind power gearboxes