SCE1212 3/4 Dia. Bearing Width .745

The SCE1212 3/4 Dia. Bearing Width .745 is a precision needle bearing engineered for high-performance rocker arm assemblies in modified and stock engine builds. Designed by T and D Machine, this needle bearing serves as a critical pivot point component for rocker arms, where it handles the constant reciprocating motion and lateral loads generated during valve actuation. Whether you're restoring a classic small-block or building a street performance engine, this bearing ensures smooth, reliable rocker arm operation under demanding driving conditions.

Manufactured from hardened steel, the SCE1212 features a 3/4-inch diameter bore with a bearing width of 0.745 inches, delivering the load distribution necessary for sustained RPM environments. Needle bearings excel in applications requiring minimal radial space while maintaining high load capacity—a critical advantage in tight rocker box designs where conventional ball bearings cannot fit. The precision manufacturing tolerances ensure minimal runout and consistent contact with the rocker shaft, reducing friction and wear over thousands of valve cycles. This design minimizes parasitic losses and supports aggressive valve timing and lift profiles common in performance camshaft applications.

Mechanics and engine builders tackling rocker arm replacement, valve train upgrades, or full engine rebuilds will find this bearing essential for T and D Machine rocker arm systems and compatible aftermarket setups. Proper installation requires careful alignment and adequate pre-load to prevent lateral movement during operation. The lightweight design (0.06 lbs) contributes minimally to rotating mass, supporting higher engine speeds without accelerating wear. This bearing is ideal for street, strip, and road-race applications where valve train reliability directly impacts overall engine durability and performance.