Stens 275-495 V-Belt Pulley 7/8" x 3 1/2

Replacement Pulley for Lawn Equipment

The Stens 275-495 V-belt pulley fits small-engine drives that require a 7/8 inch bore and a 3 1/2 inch outside diameter. It accepts a standard 1/2 inch belt width and includes a 3/16 inch keyway for positive torque transfer. Homeowners and repair shops use it to restore drive function on mowers, tillers and similar outdoor power units. It is not suited for applications needing a different bore size, belt profile or multi-groove configuration.

Sustained Load Behaviour

The cast construction maintains dimensional stability during extended mowing or tilling sessions where the drive belt remains under constant tension. Heat from friction does not cause the bore or groove to expand beyond usable limits, so belt tracking stays consistent. The keyway resists wallowing out under repeated start-stop cycles common in residential yard work. It is not rated for continuous industrial duty cycles or high-speed shaft speeds beyond typical walk-behind equipment.

Thermals Noise and Power Draw

The pulley adds negligible rotating mass, so it does not increase engine load or fuel consumption in any measurable way. Operation is silent apart from normal belt meshing sounds; no bearing or lubrication maintenance is required. The 15.0 lb shipping weight reflects protective packaging around a compact 10.0 inch cubic carton rather than the component mass itself. It does not generate heat that would affect nearby plastic guards or wiring harnesses.