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JEGS Main Bearings


JEGS Performance Products
JEGS Main Bearings

Traditional bearings have three layers: steel, copper-lead, and thin babbitt overlay (only 0.0005" to 0.0008"). JEGS Main Bearings in a Performance or High-Performance series have two layers: high-strength steel and bonded silicon, tin, and copper in an aluminum matrix (0.015" thick). Because an alloy, properties are maintained through its entire depth to deliver consistent, reliable output. Additionally, micro-fine machined High-Performance Bearings have chamfered oil holes and offer a copper-lead version for Chevy Gen III/IV LS Engines only. Bearings are sold in sets for Chevy and Ford applications.

High Load Capacity
Aluminum silicon bearings withstand the stress of high-performance engines. JEGS Bearings are made from the same metallurgical alloy so cars that have standard bearings benefit from this alloy used in race engines.

Temperature Resistance
This alloy's melting/fatigue point is 450°+ F (100° more than the thin babbitt overlay of tri-metal bearings). This means extra protection against localized overheating due to misalignment, detonation, overloading, loss of coolant, etc.

Particle Embedability
More than half of engine bearing failure is caused by metallic particles that scratch crank journals and weaken or tear thin bearing overlays. Because aluminum silicon overlay is much thicker than babbitt in tri-metal bearings (0.015" vs. 0.0008"), it provides 18 times more embedability to trap particles to prevent crank journal scratches. This is especially true for particles over 0.0004", which cause most of the damage.

Conformability
The thicker aluminum silicon layer allows bearings to better conform to problems, such as metal-to-metal contact due to misalignment. Greater conformability also means fewer bearing failures.

Control of Wall Tolerance
Bearing-to-journal clearance is affected by several factors. We've alleviated concerns about inconsistent shell-to-shell bearing wall thickness by using statistical control methods to minimize wall thickness variation. JEGS Engine Bearing thickness varies no more than 0.00010". Other manufacturers produce bearings with wall thickness at the crown that varies as much as 0.00025".


29 Products

Small Block Chevy LS Gen III/IV
  • Performance Series
  • JEGS Performance Products 25070 - JEGS Main Bearings
    555-25070
    Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • Standard Size
  • $54.99
    Ships
    JEGS Performance Products 25072 - JEGS Main Bearings
    555-25072
    Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • +0.010"
  • $54.99
    Ships

    Small Block Chevy LS Gen III/IV
  • High-Performance Series
  • Copper-Lead Material
  • JEGS Performance Products 25075 - JEGS Main Bearings
    555-25075
    High-Performance Main Bearing Set
  • Small Block Chevy LS Gen III/IV
  • Standard Size
  • FREE
    SHIPPING
    & HANDLING!
    $106.97
    Ships

    Small Block Chevy (Large Journal)
  • Performance Series
  • JEGS Performance Products 25010 - JEGS Main Bearings
    555-25010
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • Standard Size
  • $15.99
    Ships
    JEGS Performance Products 25011 - JEGS Main Bearings
    555-25011
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.001"
  • $23.99
    Ships
    JEGS Performance Products 25012 - JEGS Main Bearings
    555-25012
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.010"
  • $15.99
    Ships
    JEGS Performance Products 25013 - JEGS Main Bearings
    555-25013
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.020"
  • $15.99
    Ships
    JEGS Performance Products 25014 - JEGS Main Bearings
    555-25014
    Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $15.99
    Ships

    Small Block Chevy (Large Journal)
  • High-Performance Series
  • JEGS Performance Products 25015 - JEGS Main Bearings
    555-25015
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • Standard Size
  • $38.97
    Ships
    JEGS Performance Products 25016 - JEGS Main Bearings
    555-25016
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.001"
  • $38.97
    Ships
    JEGS Performance Products 25017 - JEGS Main Bearings
    555-25017
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.010"
  • $38.97
    Ships
    JEGS Performance Products 25018 - JEGS Main Bearings
    555-25018
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.020"
  • $38.97
    Ships
    JEGS Performance Products 25019 - JEGS Main Bearings
    555-25019
    High-Performance Main Bearing Set
  • Small Block Chevy (Large Journal)
  • +.030"
  • $56.99
    Ships

    Small Block Chevy 400
  • High-Performance Series
  • JEGS Performance Products 25020 - JEGS Main Bearings
    555-25020
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • Standard Size
  • $49.99
    Ships
    JEGS Performance Products 25022 - JEGS Main Bearings
    555-25022
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • +.010"
  • $49.99
    Ships
    JEGS Performance Products 25023 - JEGS Main Bearings
    555-25023
    High-Performance Main Bearing Set
  • Small Block Chevy 400
  • +.020"
  • $49.99
    Ships

    Big Block Chevy
  • Performance Series
  • JEGS Performance Products 25040 - JEGS Main Bearings
    555-25040
    Performance Main Bearing Set
  • Big Block Chevy
  • Standard Size
  • $29.99
    Ships
    JEGS Performance Products 25042 - JEGS Main Bearings
    555-25042
    Performance Main Bearing Set
  • Big Block Chevy
  • +.010"
  • $29.99
    Ships
    JEGS Performance Products 25043 - JEGS Main Bearings
    555-25043
    Performance Main Bearing Set
  • Big Block Chevy
  • +.020"
  • $29.99
    Ships
    JEGS Performance Products 25044 - JEGS Main Bearings
    555-25044
    Performance Main Bearing Set
  • Big Block Chevy
  • +.030"
  • $29.97
    Ships

    Big Block Chevy
  • High-Performance Series
  • JEGS Performance Products 25045 - JEGS Main Bearings
    555-25045
    High-Performance Main Bearing Set
  • Big Block Chevy
  • Standard Size
  • $53.99
    Ships
    JEGS Performance Products 25046 - JEGS Main Bearings
    555-25046
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.001"
  • $53.99
    Ships
    JEGS Performance Products 25047 - JEGS Main Bearings
    555-25047
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.010"
  • $53.99
    Ships
    JEGS Performance Products 25048 - JEGS Main Bearings
    555-25048
    High-Performance Main Bearing Set
  • Big Block Chevy
  • +.020"
  • $53.99
    Order Today Ships 06/06/16

    Small Block Ford
  • Performance Series
  • JEGS Performance Products 25050 - JEGS Main Bearings
    555-25050
    Performance Main Bearing Set
  • Small Block Ford
  • Standard Size
  • $19.99
    Ships
    JEGS Performance Products 25051 - JEGS Main Bearings
    555-25051
    Performance Main Bearing Set
  • Small Block Ford
  • +.001"
  • $19.99
    Ships
    JEGS Performance Products 25052 - JEGS Main Bearings
    555-25052
    Performance Main Bearing Set
  • Small Block Ford
  • +.010"
  • $19.99
    Ships
    JEGS Performance Products 25053 - JEGS Main Bearings
    555-25053
    Performance Main Bearing Set
  • Small Block Ford
  • +.020"
  • $19.99
    Ships

    Small Block Ford
  • High-Performance Series
  • JEGS Performance Products 25057 - JEGS Main Bearings
    555-25057
    High-Performance Main Bearing Set
  • Small Block Ford
  • +.010"
  • $69.99
    Ships

    29 Products