Alemite 43570-A2 Grease Cup Lubricator 1.75 Oz 1/4 Nptf

Product Description

The ALEMITE 43570-A2 is a spring-loaded grease cup lubricator designed to deliver controlled grease feed to bearings, bushings, and other lubrication points in industrial and mechanical equipment. The unit holds 1.75 ounces (52 mL) of grease in its reservoir and uses a variable-pressure spring mechanism to maintain consistent lubricant delivery without manual intervention. The 1/4 NPTF shank thread provides a leak-resistant tapered connection to standard grease fittings and ports. It is installed by maintenance technicians and millwrights servicing rotating equipment, conveyor systems, and general plant machinery.

This lubricator is suited for continuous-duty lubrication applications where periodic manual greasing is impractical. It performs across an operating temperature range of -40 to 65.56 degrees C and at operating pressures between 0.21 and 0.46 bar. Typical installations include electric motor bearings, fan shaft housings, conveyor head pulleys, and other equipment requiring steady low-volume grease supply. The spring-loaded design eliminates the need for external pressure sources, making it practical in remote or hard-to-access mounting locations.

Key Features

• 1.75 oz (52 mL) reservoir capacity for extended service intervals
• Spring-loaded operation delivers consistent grease pressure without an external supply
• Includes 3 variable pressure springs to allow adjustment of lubricant feed rate
• 1/4 NPTF tapered thread provides a secure, leak-resistant connection
• Rated for operating temperatures from -40 to 65.56 degrees C
• Compact design suited for tight or hard-to-reach mounting points

Compatibility

Designed as an OEM-style replacement or direct-install grease cup lubricator for equipment with 1/4 NPTF lubrication ports requiring a spring-loaded, manual-reservoir greasing solution.

Installation Notes

Install by a qualified maintenance technician or millwright following applicable equipment lockout/tagout procedures before servicing any rotating or pressurized components. Thread the 1/4 NPTF shank into the lubrication port by hand until snug, then tighten with the appropriate wrench — do not overtighten tapered pipe threads. Select the appropriate variable pressure spring from the three included options based on the equipment manufacturer's recommended grease feed rate. Inspect the reservoir seal and spring assembly at each refill to confirm proper seating and prevent lubricant bypass.