BS2-2218 K.2RS.VT143 STC spherical roller bearing

STC BS2-2218-K-2RS-VT143 Sealed Spherical Roller Bearing (Tapered Bore)

The STC BS2-2218-K-2RS-VT143 is a high-performance, double-row rolling unit engineered for operation in extreme industrial environments. The key feature of this model is the tapered bore (K) with a 1:12 taper, enabling precise mounting on an adapter sleeve or directly on a tapered shaft journal. Equipped with contact rubber seals (2RS) made of NBR and factory-filled with the optimal dose of VT143 premium lithium grease, it is entirely maintenance-free. As a spherical roller bearing, it offers full self-alignment, compensating for shaft deflections and housing misalignment without compromising durability.

Application

• Mining Industry: Conveyor drive drums and vibrating screens exposed to heavy dust.
• Agricultural Machinery: Main shaft arrangements in harvesters and soil preparation equipment.
• Industrial Fans: Stable operation in exhaust fans with restricted maintenance access.
• Wood & Paper Industry: Resistance to wood chips and solid contaminants in chippers and calenders.
• Heavy Drive Systems: Misalignment compensation in mechanisms subjected to high vibrations and shock loads.

Technical Specification

• Manufacturer: STC (Specialized Technical Components).
• Designation: BS2-2218-K-2RS-VT143.
• Dimensions: 90 mm (ID) x 160 mm (OD) x 52.4 mm (Width).
• Bore: Tapered (K) – 1:12 taper ratio.
• Sealing: 2RS (Double-sided contact rubber seals).
• Lubrication: VT143 (Premium factory lithium grease with high base oil viscosity).
• Design: Self-aligning, double-row, reinforced.

Features and Benefits

• Hermetic Protection (2RS): Effective raceway isolation from contaminants drastically extends service life compared to open versions requiring frequent re-greasing.
• Easy Clearance Adjustment: The tapered bore allows for precise setting of operational clearance during sleeve mounting, enhancing shaft stability.
• Ready-to-Fit: Lubricated and sealed – eliminates the risk of incorrect grease selection and reduces machine downtime.
• Full Self-Alignment: The bearing operates smoothly even with angular shaft deflection up to 0.5°, reducing fatigue stress in the machine.
• STC Technology: High-purity steel ensures exceptional resistance to ring cracking under heavy loads.

Why Choose This Product

By choosing the STC BS2-2218-K-2RS-VT143, you prioritize maximum operational uptime. In 90 mm shaft applications where bearing replacement is labor-intensive, this sealed spherical model is the best insurance against failure. It is the perfect choice for maintenance managers looking to eliminate regular servicing and enjoy years of reliable performance.