The 1L841668T1 is a heavy-duty industrial shunt DC motor produced by Reliance Electric. This model belongs to the legacy motor product line and has been discontinued by the manufacturer. Currently, refurbished and used units are widely adopted for equipment maintenance and system retrofitting of old industrial facilities.

1L represents the first-generation low voltage DC motor series of Reliance Electric. The code 841668 stands for specific frame size, power rating and winding parameters of the motor. T1 indicates the dedicated terminal arrangement and structural modification version.

This is a shunt-wound DC motor with NEMA L184T frame size. The rated power is 5 HP equivalent to 3.7 kW, and the rated operating voltage is 240 VDC. The rated speed reaches 1750 RPM. It adopts totally enclosed fan cooled structure with IP44 protection level. The internal insulation system is Class F which can withstand maximum temperature of 155 degrees Celsius. The service factor is 1.15. The motor is designed with foot mounting style, and the overall weight is approximately 68 kilograms.

Main power terminals are reserved for connecting DC power supply and excitation circuits. Standard terminal layout follows the T1 specification for reliable wiring connection. There are no extra communication interfaces, and the motor operates with traditional hardwired control mode. Built-in cooling fan and internal wiring are configured to match long-term continuous operation requirements.

The motor features sturdy cast iron housing to adapt to harsh industrial working conditions. Totally enclosed fan cooled structure effectively blocks dust and moisture from entering the internal components. Class F insulation enhances heat resistance and extends the service life of windings. The dynamically balanced rotor ensures smooth rotation and low vibration during operation. The lubrication structure of bearings allows regular regreasing to maintain stable running performance. It delivers stable torque output to meet the demands of continuous heavy load operation.

It is suitable for driving industrial conveyors, cranes, hoists and various material handling equipment. It also works for industrial mixers, fans and general machine tools. This motor is mainly used as a replacement part for legacy production lines and mechanical systems originally equipped with Reliance DC motors.

Install the motor on a solid base and keep the installation area clean, dry and well ventilated. Ensure all wiring connections are tight and in line with voltage and circuit requirements before powering on. Check the operating speed, temperature and vibration regularly during operation. Cut off the power completely before performing inspection or maintenance work. Keep the cooling fan and ventilation passages unobstructed to guarantee heat dissipation effect. Lubricate the bearings periodically according to operating hours. Check windings and terminals for overheating, aging or corrosion on a regular basis. Do not disassemble the motor without professional guidance. Store spare motors in a cool, dry and dust-free environment.