Sumitomo CNHJ-6120Y-87 Industrial Limit Switch

Sumitomo CNHJ-6120Y-87 is a Cyclo gear reducer from Sumitomo Machinery Inc. that delivers an 87:1 reduction ratio to convert higher-speed input into higher-torque output for industrial equipment. The unit is specified for up to 1,750 RPM input and provides about 3,770 in-lb of output torque with a 1.27 HP rating; its model designation PA021857 identifies the specific unit. Current distributor listings indicate the CNHJ-6120Y-87 has been discontinued by the manufacturer, with available units typically found as used or refurbished under the same model code. As part of the CNHJ line, this reducer represents Sumitomo’s Cyclo-style reduction technology in a compact package designed for rugged torque delivery in heavy-duty automation and manufacturing settings. The 87:1 ratio makes it suitable for applications where substantial speed reduction is required while maintaining moderate horsepower, though exact shaft sizes and mounting patterns vary by unit and should be confirmed from vendor documentation for a given lot.