AMETRIC SPBA SPB4 50 X 4 3535 18 Pulley

AMETRIC SPBA SPB4 50 X 4 3535 is a four-groove SPB V-belt pulley from AMETRIC, designed for SPB-class belts in compact power-transmission drives. The SPB4 designation confirms four grooves, enabling multiple belts to share load in a single pulley, while the 50 X 4 sizing indicates the nominal footprint and groove arrangement used in the SPB family, with the 3535 suffix appearing as part of the configuration code used by AMETRIC to distinguish this exact variant. SPB pulleys are built to the SPB belt profile, and DIN 2211 standards underpin their groove geometry and overall dimensions, ensuring compatibility with standard SPB belts across sizes. Some AMETRIC SPB pulleys are offered in cast-iron (CI) construction, reflecting a common approach for durability and balance in belt-drive components. The SPB family also includes taper-bore mounting variants, enabling secure hub attachment to shafts with standard taper bushes. This size is suitable for four-belt drives in space-constrained configurations, providing increased torque capacity in applications that require a compact footprint when paired with SPB-class belts.