1202-201 – Flange Yokes – 1251 Series – Bolt Circle Dia 3.555″ – Pilot Dia 1.991-F

The 1202-201 Flange Yoke is a critical component for reliable driveshaft connections, specifically designed for 1251 Series applications. The 3.555-inch bolt circle diameter is essential for ensuring a secure fit to the mating flange, allowing for optimal torque transfer and minimizing the risk of failure during operation. This dimension directly affects how the yoke interfaces with the companion flange, making it crucial for maintaining alignment and reducing vibration.

With a pilot diameter of 1.991 inches, this yoke centers itself accurately on the output shaft, which is vital for maintaining proper phasing with the opposite yoke. The four bolt holes, each measuring 0.427 inches in diameter, provide ample fastening points to secure the yoke to the driveshaft assembly. The distance from the centerline of the joint to the flat measures 1.750 inches, which is important for ensuring that the yoke maintains the correct geometry during operation.

• Series: 1251
• Bolt Circle Diameter: 3.555 inches
• Pilot Diameter: 1.991 inches
• Bolt Hole Diameter: 0.427 inches
• Distance from CJ to Flat: 1.750 inches

When installing the 1202-201, ensure that you check the spline engagement depth and verify phasing with the opposite yoke. This will prevent premature wear and potential failure of the driveline components. Overall, the 1202-201 Flange Yoke is engineered for durability and precision, making it an essential part for any performance or fleet application.