UCPL 215-48 IPTCI 3" Bore Standard Duty Pillow Block Cast Iron Housing, Low Shaft Height with Set Screw Lock. IPTCI's Standard cast housings are among the most rigidly designed and heaviest...UCPL 215-48 IPTCI 3" Bore Standard Duty Pillow Block Cast Iron Housing, Low Shaft Height with Set Screw Lock. IPTCI's Standard cast housings are among the most rigidly designed and heaviest...