A grease fitting is a small mechanical component that provides a sealed connection point for injecting lubricating grease into machinery bearings and joints.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Seal Type | Spring-loaded ball check valve | |
| Thread Size | 1/4-28 UNF, 1/8-27 NPT, M6x1, M8x1 | |
| Ball Diameter | 4mm, 5mm, 6mm | |
| Pressure Rating | Up to 10,000 psi (690 bar) | |
| Temperature Range | -40°C to 150°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A pulley mounted at the top of a mast that guides and supports hoisting lines or cables.
Grooved wheels on the crown block that guide and support the drilling line in a drilling rig.
A mechanical assembly of one or more sheaves mounted on a common shaft or frame, designed to guide and support cables or ropes in lifting and hoisting systems.
A practical evidence checklist for RFQ preparation and supplier evaluation.
Compare the published product scope and source details, then include your specifications and quantity in an enquiry.
1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Explore company information and manufacturing capabilities, then discuss the scope of your project with a relevant supplier.
Metric fittings use millimeter thread measurements (e.g., M6x1) while imperial fittings use inch-based threads (e.g., 1/4-28 UNF). They are not interchangeable without adapters.
Service intervals depend on operating conditions, typically ranging from 50 to 500 hours of operation. Follow manufacturer recommendations based on load, speed, and environmental factors.
Common failures include clogging from hardened grease, ball valve wear, thread damage during installation, and corrosion from environmental exposure.
Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.