CSA104-12 Cast Iron Pillow Block Bearing Unit 12mm Bore Self-Aligning for

The CSA104-12 pillow block bearing unit combines a Gcr15 chrome steel bearing insert with an HT200 cast iron housing for reliable shaft support in industrial conveyor systems, packaging lines, and material handling equipment. The self-aligning spherical design accommodates shaft misalignment up to ±2° while maintaining smooth rotation at speeds up to 6,500 RPM. Each unit arrives pre-lubricated with lithium complex grease and features double-lip NBR seals on both sides for effective contaminant protection. The two-bolt base enables fast, secure mounting without specialized tools.

• Self-Aligning Spherical Design: The bearing insert features a spherical outer ring that automatically compensates for shaft misalignment up to ±2°, reducing installation stress and preventing edge loading in applications where perfect alignment is difficult to achieve.
• HT200 Cast Iron Housing: High-grade gray cast iron offers excellent vibration damping and structural rigidity, resisting deformation under load across a wide temperature range.
• Gcr15 Chrome Steel Bearing: Manufactured from Gcr15 bearing steel (AISI 52100 equivalent), heat-treated to HRC 60-64 for optimal hardness and wear resistance with precision-honed raceways for low-noise operation.
• Double-Lip NBR Sealing: Both sides feature nitrile rubber contact seals with dual-lip geometry — the primary lip excludes solid contaminants while the secondary lip retains grease over extended maintenance intervals.
• Dual Set Screw Locking: Two hardened steel set screws at 120° offset provide secure shaft locking with reliable holding force and allow quick installation during equipment assembly or maintenance.

• Belt conveyors and roller conveyors for manufacturing and logistics
• Screw conveyors and bucket elevators for bulk material handling
• Packaging machinery, labeling systems, and cartoning equipment
• Seed drills, feed conveyors, and light agricultural machinery
• Textile spinning frames, weaving looms, and fabric processing lines
• General power transmission shafts requiring self-aligning support

• ISO 9001:2015 Certified: Every bearing is manufactured and inspected under a certified quality system, ensuring dimensional accuracy and batch consistency.
• Full Traceability: Each unit carries a unique batch code linking to material certificates, heat treatment records, and inspection reports.
• Factory-Direct Supply: Direct pricing eliminates intermediary markups without compromising material quality or manufacturing precision.
• Global Logistics: Flexible air, sea, and express courier options to over 50 countries with competitive transit times.
• Technical Support: Application-specific guidance on bearing selection, installation practices, and lubrication scheduling.

Q1: What is the maximum speed rating for the CSA104-12?

The CSA104-12 is rated for continuous operation up to 6,500 RPM under normal load conditions. For applications approaching this limit, consult our engineering team for duty cycle verification.

Q2: Can this bearing handle axial loads?

Yes, the self-aligning spherical design accommodates moderate axial loads up to approximately 20% of the dynamic radial rating. For predominantly axial applications, a thrust bearing configuration may be more suitable.

Q3: What is your minimum order quantity and lead time?

Standard MOQ is 10 pieces. In-stock items ship within 3-5 working days; custom production orders require 15-25 days. Contact our sales team for current availability and volume pricing.

Q4: Is the bearing relubricatable after installation?

Yes, the housing includes a grease fitting port for relubrication without disassembly. We recommend relubrication every 500 operating hours or 3 months under normal conditions, and more frequently in high-contamination environments.