Grease Fittings Are Also Called Grease Fittings

  • Grease Nipple Coupler is our product, and grease nipple connector is usually also called grease fitting. The grease fitting is permanently installed via a (tapered) thread or direct push ("hammer in") device, leaving a nipple connector to which a grease gun is attached. The pressure provided by the grease gun forces a small fixed bearing ball in the assembly to move backward against the force of its fixed spring. Therefore, the device is essentially a valve that opens under pressure to allow lubricant to pass through the passage and be forced into the gap in the bearing. When the pressure stops, the ball returns to its closed position. The ball removes dirt and acts as a check valve to prevent grease from escaping from the fitting. The ball is almost flush with the surface of the fitting, so it can be wiped clean to reduce the amount of debris carried by the grease into the bearing.

    The common convex shape of the fitting allows the concave tip of the grease gun to easily seal the fitting from multiple angles, while having a tight enough seal to force the pressurized grease to move the ball and enter the fitting instead of simply infiltrating this temporary The annular (annular) seal.

    The less common designs have some names, including "button head", "theepenny bit", "flat" and "tat head". These are larger nipple heads with a flat sealing surface that extends out of the body of the nipple so that one end of the grease gun is hooked to the nipple by sliding action to wipe the nipple surface when connected. The hose of a grease gun is usually at an acute angle (for example, 70-90°) to the axis of the nipple, but it can be approached from any azimuth angle. Grease pressure cannot force this type of connector away from the nipple. Grease fittings are usually made of galvanized steel, stainless steel or brass.