
OILITE
Pertanyaan yang Sering Diajukan
Pertanyaan umum tentang OILITE dari 3G Electric.
What is the standard material grade for OILITE bronze sleeve bearings?
OILITE bronze sleeve bearings are manufactured from SAE 841 sintered bronze. This material is a porous bronze alloy (typically 90% copper, 10% tin) that is vacuum-impregnated with lubricating oil. The SAE 841 grade ensures consistent porosity and oil retention, providing self-lubrication for the bearing's service life under normal operating conditions.
What temperature range can OILITE SAE 841 bronze bearings withstand?
Standard OILITE SAE 841 bronze bearings are rated for continuous operation from -35°F to 300°F (-37°C to 149°C). At temperatures above 300°F, the impregnated oil may degrade or evaporate, reducing lubrication effectiveness. For higher-temperature applications, OILITE offers plastic-based bearings such as Vespel SP-21, which can handle elevated temperatures and heavy loads.
Are OILITE plastic sleeve bearings suitable for wet environments?
Yes, OILITE offers acetal (polyoxymethylene) sleeve bearings specifically designed for wet environments. Acetal has low moisture absorption and good dimensional stability in humid or submerged conditions. These bearings are white in color and available in sizes such as 1 1/2 in bore. They are not self-lubricating like bronze bearings but provide low friction and wear resistance in water or mild chemical exposure.
What is the maximum PV rating for OILITE SAE 841 bronze bearings?
OILITE SAE 841 bronze bearings have a maximum PV (pressure-velocity) rating of 49,938 lb/sq in-fpm. This value represents the product of the bearing's load (in psi) and surface speed (in feet per minute) at which the bearing can operate without excessive wear or failure. Actual allowable PV depends on factors such as shaft hardness, surface finish, and lubrication conditions.
Does OILITE offer thrust washers in addition to sleeve bearings?
Yes, OILITE manufactures general-purpose lubricated metallic thrust washers made from SAE 841 bronze. These washers are designed to handle axial loads in rotating assemblies. For example, the OILITE Thrust Washer with a 3/8 in bore, 3/4 in OD, and 0.062 in thickness is available in 10-packs. They operate within the same temperature range as sleeve bearings (-35°F to 300°F) and are RoHS certified.
Are OILITE bearings available in metric dimensions?
Yes, OILITE sleeve bearings are available in metric sizes. For instance, the AAM2025-30B has a 20 mm bore, 25 mm OD, and 30 mm length, while the AAM1418-18B has a 14 mm bore, 18 mm OD, and 18 mm length. These metric bearings use the same SAE 841 bronze material and have the same maximum PV rating as inch-series bearings. 3G Electric stocks both inch and metric variants.
