The RBC® SJ series of Pitchlign® heavy duty needle roller bearings are supplied in standard envelopes in both sealed and unsealed configurations. There are eight possible seal configurations. The seals can include double or single seal with the seal lip turned inward or outward. The seal can be mounted in the radius end of the ring or the chamfered end of the ring for optimum mounting variations. RBC® Precision Ground Needle Roller Bearing, Heavy Duty, Series: Pitchlign® SJ Series, 3-1/4 in Bore Dia, 4-1/4 in Outside Dia, 1 Row, 1-3/4 in W, Open Closure, 55100 lb, 52100 Steel Bearing, Steel Cage, 4100 RPM Maximum, -40 to 300 °F