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OILITE

OILITE is a brand of self-lubricating sleeve bearings and thrust washers manufactured from sintered bronze (SAE 841) and engineered plastics. The brand is owned by Beemer Precision, Inc., a U.S.-based company with a history dating to the 1930s, and is widely recognized in industrial maintenance and original equipment manufacturing for its proprietary oil-impregnated bronze bearings. OILITE products are designed to operate without external lubrication in many applications, relying on a porous bronze matrix that holds lubricating oil (typically SAE 30 or 40) and releases it during operation. The product line includes plain sleeve bearings, flanged sleeve bearings, thrust washers, and plastic-based bearings made from materials such as glass-filled PTFE, Vespel SP-21, and acetal. These components are available in both inch and metric dimensions, with bore sizes ranging from 3/8 in to 1 1/2 in (and metric equivalents from 14 mm to 20 mm) and lengths from 3/8 in to 2 in. Operating temperature ranges for standard bronze bearings span -35°F to 300°F, while plastic variants offer extended chemical resistance or higher temperature limits (e.g., Vespel SP-21 for heavy-load and high-temperature environments). Maximum PV (pressure-velocity) ratings for bronze bearings are specified at 49,938 lb/sq in-fpm. OILITE bearings are RoHS certified and comply with SAE 841 material specifications. 3G Electric stocks over 1,100 SKUs of OILITE bearings and washers, including multi-packs (5 or 10 pieces) for maintenance and production runs. The catalog covers general-purpose lubricated metallic bearings, chemical- and heat-resistant plastic bearings, wet-environment acetal bearings, and heavy-load Vespel bearings. Engineers and procurement specialists can select by bore size, OD, length, material grade, and flange type. 3G Electric provides global logistics support, enabling consistent supply for plant maintenance, repair, and operations (MRO) as well as OEM integration across industries such as material handling, automotive, food processing, and fluid power.

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About OILITE

OILITE is a brand of self-lubricating sleeve bearings and thrust washers manufactured from sintered bronze (SAE 841) and engineered plastics. The brand is owned by Beemer Precision, Inc., a U.S.-based company with a history dating to the 1930s, and is widely recognized in industrial maintenance and original equipment manufacturing for its proprietary oil-impregnated bronze bearings. OILITE products are designed to operate without external lubrication in many applications, relying on a porous bronze matrix that holds lubricating oil (typically SAE 30 or 40) and releases it during operation. The product line includes plain sleeve bearings, flanged sleeve bearings, thrust washers, and plastic-based bearings made from materials such as glass-filled PTFE, Vespel SP-21, and acetal. These components are available in both inch and metric dimensions, with bore sizes ranging from 3/8 in to 1 1/2 in (and metric equivalents from 14 mm to 20 mm) and lengths from 3/8 in to 2 in. Operating temperature ranges for standard bronze bearings span -35°F to 300°F, while plastic variants offer extended chemical resistance or higher temperature limits (e.g., Vespel SP-21 for heavy-load and high-temperature environments). Maximum PV (pressure-velocity) ratings for bronze bearings are specified at 49,938 lb/sq in-fpm. OILITE bearings are RoHS certified and comply with SAE 841 material specifications. 3G Electric stocks over 1,100 SKUs of OILITE bearings and washers, including multi-packs (5 or 10 pieces) for maintenance and production runs. The catalog covers general-purpose lubricated metallic bearings, chemical- and heat-resistant plastic bearings, wet-environment acetal bearings, and heavy-load Vespel bearings. Engineers and procurement specialists can select by bore size, OD, length, material grade, and flange type. 3G Electric provides global logistics support, enabling consistent supply for plant maintenance, repair, and operations (MRO) as well as OEM integration across industries such as material handling, automotive, food processing, and fluid power.

Common Applications

  • Material handling conveyors — OILITE SAE 841 flanged sleeve bearings for roller support in high-cycle environments
  • Automotive assembly equipment — OILITE Vespel SP-21 sleeve bearings for heavy-load pivot points in welding fixtures
  • Food processing machinery — OILITE acetal sleeve bearings for washdown zones requiring corrosion resistance
  • Fluid power pumps — OILITE bronze thrust washers for axial load management in hydraulic motor assemblies
  • Textile manufacturing — OILITE glass-filled PTFE sleeve bearings for chemical exposure in dyeing machines
  • Packaging line drives — OILITE SAE 841 plain sleeve bearings for low-maintenance shaft support in continuous motion

Frequently asked questions

Common questions about OILITE from 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.