Heavy-Duty 1760 Series Half Round universal joint with HR bearing style, 1.938 inch bearing cap diameter and 7.000 inch bearing plate width, designed for high-torque driveline applications in commercial trucks and vocational vehicles. Greasable cross design improves service life by allowing regular lubrication, reducing friction and heat buildup during operation, ideal for fleet maintenance programs and severe-duty driveline environments Precision-machined cross diameter of 1.298 inches with over-cap length of 6.541 inches ensures accurate fitment, smooth power transfer, reduced vibration, and long-term durability under heavy load conditions. Direct replacement for multiple OEM and aftermarket part numbers including Spicer 15-677X, Meritor M677X, Automann 752.5677X, Neapco 6-0677, SKF UJ877, and Freightliner 015677X. Suitable for Freightliner, Mack, Volvo, Navistar, GMC, and PACCAR driveline systems using 1760 Series HR style joints; engineered to meet or exceed OEM performance and reliability standards.