4″ SMC/ RA Double Stainless Steel Pulley

Offered in a choice of either Oilite or sealed Ball Bearings, the SMC/RA series of pulleys include singles and doubles ranging in size and style from a 2” single to a 4” double. Oilite (sintered bronze) bearings are popular for delivering reliable performance at a reduced cost. Sealed ball bearings provide optimal efficiency and reduce the performance robbing resistance that is inherent in most multiple component systems. In addition, sealed ball bearings are not prone to failure under misaligned loads or with twisted gear as can be the case with needle bearings. The axle-nuts are double locked to the steel axle and then marked with a witness line in order to help detect any loosening. The attachment hole is sized to accept large rescue carabiners with sufficient room to allow the carabiners to rotate freely and easily.

FEATURES AND BENEFITS:

• UL Certified to NFPA1983 “G” General Use.
• Uses either high efficiency sealed ball bearings or durable Oilite bushings and are designed to work flawlessly under conditions that might shut down a lower quality pulley.
• Sealed ball bearings provide optimal efficiency thus reducing the performance robbing resistance inherent in most multiple component systems and are not prone to failure under misaligned loads or with twisted gear as may occur with needle bearings.
• Matched double-bend side plates help eliminate compression under load.
• The axle-nuts are double locked to the steel axle and marked with a witness line to help detect any loosening.
• Made in the USA.